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annotate gcc/regcprop.c @ 116:367f9f4f266e

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fix gimple.h
author mir3636
date Tue, 28 Nov 2017 20:22:01 +0900 (2017-11-28)
parents 04ced10e8804
children 84e7813d76e9
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /* Copy propagation on hard registers for the GNU compiler.
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2 Copyright (C) 2000-2017 Free Software Foundation, Inc.
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3
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4 This file is part of GCC.
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5
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6 GCC is free software; you can redistribute it and/or modify it
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7 under the terms of the GNU General Public License as published by
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8 the Free Software Foundation; either version 3, or (at your option)
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9 any later version.
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10
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11 GCC is distributed in the hope that it will be useful, but WITHOUT
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12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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13 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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14 License for more details.
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15
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16 You should have received a copy of the GNU General Public License
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17 along with GCC; see the file COPYING3. If not see
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18 <http://www.gnu.org/licenses/>. */
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19
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20 #include "config.h"
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21 #include "system.h"
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22 #include "coretypes.h"
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23 #include "backend.h"
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24 #include "rtl.h"
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25 #include "df.h"
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26 #include "memmodel.h"
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27 #include "tm_p.h"
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28 #include "insn-config.h"
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29 #include "regs.h"
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30 #include "emit-rtl.h"
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31 #include "recog.h"
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32 #include "diagnostic-core.h"
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33 #include "addresses.h"
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34 #include "tree-pass.h"
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35 #include "rtl-iter.h"
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36 #include "cfgrtl.h"
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37 #include "target.h"
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38
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39 /* The following code does forward propagation of hard register copies.
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40 The object is to eliminate as many dependencies as possible, so that
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41 we have the most scheduling freedom. As a side effect, we also clean
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42 up some silly register allocation decisions made by reload. This
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43 code may be obsoleted by a new register allocator. */
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44
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45 /* DEBUG_INSNs aren't changed right away, as doing so might extend the
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46 lifetime of a register and get the DEBUG_INSN subsequently reset.
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47 So they are queued instead, and updated only when the register is
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48 used in some subsequent real insn before it is set. */
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49 struct queued_debug_insn_change
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50 {
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51 struct queued_debug_insn_change *next;
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52 rtx_insn *insn;
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53 rtx *loc;
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54 rtx new_rtx;
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55 };
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56
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57 /* For each register, we have a list of registers that contain the same
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58 value. The OLDEST_REGNO field points to the head of the list, and
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59 the NEXT_REGNO field runs through the list. The MODE field indicates
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60 what mode the data is known to be in; this field is VOIDmode when the
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61 register is not known to contain valid data. */
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62
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63 struct value_data_entry
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64 {
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65 machine_mode mode;
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66 unsigned int oldest_regno;
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67 unsigned int next_regno;
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68 struct queued_debug_insn_change *debug_insn_changes;
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69 };
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70
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71 struct value_data
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72 {
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73 struct value_data_entry e[FIRST_PSEUDO_REGISTER];
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74 unsigned int max_value_regs;
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75 unsigned int n_debug_insn_changes;
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76 };
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77
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78 static object_allocator<queued_debug_insn_change> queued_debug_insn_change_pool
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79 ("debug insn changes pool");
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80
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81 static bool skip_debug_insn_p;
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82
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83 static void kill_value_one_regno (unsigned, struct value_data *);
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84 static void kill_value_regno (unsigned, unsigned, struct value_data *);
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85 static void kill_value (const_rtx, struct value_data *);
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86 static void set_value_regno (unsigned, machine_mode, struct value_data *);
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87 static void init_value_data (struct value_data *);
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88 static void kill_clobbered_value (rtx, const_rtx, void *);
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89 static void kill_set_value (rtx, const_rtx, void *);
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90 static void copy_value (rtx, rtx, struct value_data *);
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91 static bool mode_change_ok (machine_mode, machine_mode,
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92 unsigned int);
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93 static rtx maybe_mode_change (machine_mode, machine_mode,
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94 machine_mode, unsigned int, unsigned int);
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95 static rtx find_oldest_value_reg (enum reg_class, rtx, struct value_data *);
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96 static bool replace_oldest_value_reg (rtx *, enum reg_class, rtx_insn *,
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97 struct value_data *);
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98 static bool replace_oldest_value_addr (rtx *, enum reg_class,
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99 machine_mode, addr_space_t,
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100 rtx_insn *, struct value_data *);
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101 static bool replace_oldest_value_mem (rtx, rtx_insn *, struct value_data *);
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102 static bool copyprop_hardreg_forward_1 (basic_block, struct value_data *);
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103 extern void debug_value_data (struct value_data *);
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104 static void validate_value_data (struct value_data *);
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105
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106 /* Free all queued updates for DEBUG_INSNs that change some reg to
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107 register REGNO. */
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108
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109 static void
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110 free_debug_insn_changes (struct value_data *vd, unsigned int regno)
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111 {
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112 struct queued_debug_insn_change *cur, *next;
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113 for (cur = vd->e[regno].debug_insn_changes; cur; cur = next)
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114 {
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115 next = cur->next;
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116 --vd->n_debug_insn_changes;
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117 queued_debug_insn_change_pool.remove (cur);
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118 }
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119 vd->e[regno].debug_insn_changes = NULL;
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120 }
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121
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122 /* Kill register REGNO. This involves removing it from any value
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123 lists, and resetting the value mode to VOIDmode. This is only a
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124 helper function; it does not handle any hard registers overlapping
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125 with REGNO. */
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126
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127 static void
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128 kill_value_one_regno (unsigned int regno, struct value_data *vd)
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129 {
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130 unsigned int i, next;
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131
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132 if (vd->e[regno].oldest_regno != regno)
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133 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
134 for (i = vd->e[regno].oldest_regno;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
135 vd->e[i].next_regno != regno;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
136 i = vd->e[i].next_regno)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
137 continue;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
138 vd->e[i].next_regno = vd->e[regno].next_regno;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
139 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
140 else if ((next = vd->e[regno].next_regno) != INVALID_REGNUM)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
141 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
142 for (i = next; i != INVALID_REGNUM; i = vd->e[i].next_regno)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
143 vd->e[i].oldest_regno = next;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
144 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
145
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
146 vd->e[regno].mode = VOIDmode;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
147 vd->e[regno].oldest_regno = regno;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
148 vd->e[regno].next_regno = INVALID_REGNUM;
63
b7f97abdc517 update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
149 if (vd->e[regno].debug_insn_changes)
b7f97abdc517 update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
150 free_debug_insn_changes (vd, regno);
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
151
111
kono
parents: 67
diff changeset
152 if (flag_checking)
kono
parents: 67
diff changeset
153 validate_value_data (vd);
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
154 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
155
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
156 /* Kill the value in register REGNO for NREGS, and any other registers
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
157 whose values overlap. */
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
158
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
159 static void
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
160 kill_value_regno (unsigned int regno, unsigned int nregs,
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
161 struct value_data *vd)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
162 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
163 unsigned int j;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
164
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
165 /* Kill the value we're told to kill. */
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
166 for (j = 0; j < nregs; ++j)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
167 kill_value_one_regno (regno + j, vd);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
168
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
169 /* Kill everything that overlapped what we're told to kill. */
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
170 if (regno < vd->max_value_regs)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
171 j = 0;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
172 else
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
173 j = regno - vd->max_value_regs;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
174 for (; j < regno; ++j)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
175 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
176 unsigned int i, n;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
177 if (vd->e[j].mode == VOIDmode)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
178 continue;
111
kono
parents: 67
diff changeset
179 n = hard_regno_nregs (j, vd->e[j].mode);
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
180 if (j + n > regno)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
181 for (i = 0; i < n; ++i)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
182 kill_value_one_regno (j + i, vd);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
183 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
184 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
185
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
186 /* Kill X. This is a convenience function wrapping kill_value_regno
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
187 so that we mind the mode the register is in. */
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
188
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
189 static void
111
kono
parents: 67
diff changeset
190 kill_value (const_rtx x, struct value_data *vd)
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
191 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
192 if (GET_CODE (x) == SUBREG)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
193 {
111
kono
parents: 67
diff changeset
194 rtx tmp = simplify_subreg (GET_MODE (x), SUBREG_REG (x),
kono
parents: 67
diff changeset
195 GET_MODE (SUBREG_REG (x)), SUBREG_BYTE (x));
kono
parents: 67
diff changeset
196 x = tmp ? tmp : SUBREG_REG (x);
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
197 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
198 if (REG_P (x))
111
kono
parents: 67
diff changeset
199 kill_value_regno (REGNO (x), REG_NREGS (x), vd);
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
200 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
201
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
202 /* Remember that REGNO is valid in MODE. */
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
203
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
204 static void
111
kono
parents: 67
diff changeset
205 set_value_regno (unsigned int regno, machine_mode mode,
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
206 struct value_data *vd)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
207 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
208 unsigned int nregs;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
209
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
210 vd->e[regno].mode = mode;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
211
111
kono
parents: 67
diff changeset
212 nregs = hard_regno_nregs (regno, mode);
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
213 if (nregs > vd->max_value_regs)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
214 vd->max_value_regs = nregs;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
215 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
216
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
217 /* Initialize VD such that there are no known relationships between regs. */
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
218
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
219 static void
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
220 init_value_data (struct value_data *vd)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
221 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
222 int i;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
223 for (i = 0; i < FIRST_PSEUDO_REGISTER; ++i)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
224 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
225 vd->e[i].mode = VOIDmode;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
226 vd->e[i].oldest_regno = i;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
227 vd->e[i].next_regno = INVALID_REGNUM;
63
b7f97abdc517 update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
228 vd->e[i].debug_insn_changes = NULL;
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
229 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
230 vd->max_value_regs = 0;
63
b7f97abdc517 update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
231 vd->n_debug_insn_changes = 0;
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
232 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
233
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
234 /* Called through note_stores. If X is clobbered, kill its value. */
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
235
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
236 static void
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
237 kill_clobbered_value (rtx x, const_rtx set, void *data)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
238 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
239 struct value_data *const vd = (struct value_data *) data;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
240 if (GET_CODE (set) == CLOBBER)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
241 kill_value (x, vd);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
242 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
243
111
kono
parents: 67
diff changeset
244 /* A structure passed as data to kill_set_value through note_stores. */
kono
parents: 67
diff changeset
245 struct kill_set_value_data
kono
parents: 67
diff changeset
246 {
kono
parents: 67
diff changeset
247 struct value_data *vd;
kono
parents: 67
diff changeset
248 rtx ignore_set_reg;
kono
parents: 67
diff changeset
249 };
kono
parents: 67
diff changeset
250
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
251 /* Called through note_stores. If X is set, not clobbered, kill its
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
252 current value and install it as the root of its own value list. */
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
253
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
254 static void
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
255 kill_set_value (rtx x, const_rtx set, void *data)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
256 {
111
kono
parents: 67
diff changeset
257 struct kill_set_value_data *ksvd = (struct kill_set_value_data *) data;
kono
parents: 67
diff changeset
258 if (rtx_equal_p (x, ksvd->ignore_set_reg))
kono
parents: 67
diff changeset
259 return;
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
260 if (GET_CODE (set) != CLOBBER)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
261 {
111
kono
parents: 67
diff changeset
262 kill_value (x, ksvd->vd);
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
263 if (REG_P (x))
111
kono
parents: 67
diff changeset
264 set_value_regno (REGNO (x), GET_MODE (x), ksvd->vd);
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
265 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
266 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
267
111
kono
parents: 67
diff changeset
268 /* Kill any register used in X as the base of an auto-increment expression,
kono
parents: 67
diff changeset
269 and install that register as the root of its own value list. */
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
270
111
kono
parents: 67
diff changeset
271 static void
kono
parents: 67
diff changeset
272 kill_autoinc_value (rtx_insn *insn, struct value_data *vd)
kono
parents: 67
diff changeset
273 {
kono
parents: 67
diff changeset
274 subrtx_iterator::array_type array;
kono
parents: 67
diff changeset
275 FOR_EACH_SUBRTX (iter, array, PATTERN (insn), NONCONST)
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
276 {
111
kono
parents: 67
diff changeset
277 const_rtx x = *iter;
kono
parents: 67
diff changeset
278 if (GET_RTX_CLASS (GET_CODE (x)) == RTX_AUTOINC)
kono
parents: 67
diff changeset
279 {
kono
parents: 67
diff changeset
280 x = XEXP (x, 0);
kono
parents: 67
diff changeset
281 kill_value (x, vd);
kono
parents: 67
diff changeset
282 set_value_regno (REGNO (x), GET_MODE (x), vd);
kono
parents: 67
diff changeset
283 iter.skip_subrtxes ();
kono
parents: 67
diff changeset
284 }
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
285 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
286 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
287
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
288 /* Assert that SRC has been copied to DEST. Adjust the data structures
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
289 to reflect that SRC contains an older copy of the shared value. */
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
290
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
291 static void
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
292 copy_value (rtx dest, rtx src, struct value_data *vd)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
293 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
294 unsigned int dr = REGNO (dest);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
295 unsigned int sr = REGNO (src);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
296 unsigned int dn, sn;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
297 unsigned int i;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
298
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
299 /* ??? At present, it's possible to see noop sets. It'd be nice if
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
300 this were cleaned up beforehand... */
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
301 if (sr == dr)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
302 return;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
303
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
304 /* Do not propagate copies to the stack pointer, as that can leave
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
305 memory accesses with no scheduling dependency on the stack update. */
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
306 if (dr == STACK_POINTER_REGNUM)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
307 return;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
308
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
309 /* Likewise with the frame pointer, if we're using one. */
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
310 if (frame_pointer_needed && dr == HARD_FRAME_POINTER_REGNUM)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
311 return;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
312
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
313 /* Do not propagate copies to fixed or global registers, patterns
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
314 can be relying to see particular fixed register or users can
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
315 expect the chosen global register in asm. */
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
316 if (fixed_regs[dr] || global_regs[dr])
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
317 return;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
318
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
319 /* If SRC and DEST overlap, don't record anything. */
111
kono
parents: 67
diff changeset
320 dn = REG_NREGS (dest);
kono
parents: 67
diff changeset
321 sn = REG_NREGS (src);
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
322 if ((dr > sr && dr < sr + sn)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
323 || (sr > dr && sr < dr + dn))
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
324 return;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
325
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
326 /* If SRC had no assigned mode (i.e. we didn't know it was live)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
327 assign it now and assume the value came from an input argument
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
328 or somesuch. */
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
329 if (vd->e[sr].mode == VOIDmode)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
330 set_value_regno (sr, vd->e[dr].mode, vd);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
331
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
332 /* If we are narrowing the input to a smaller number of hard regs,
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
333 and it is in big endian, we are really extracting a high part.
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
334 Since we generally associate a low part of a value with the value itself,
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
335 we must not do the same for the high part.
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
336 Note we can still get low parts for the same mode combination through
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
337 a two-step copy involving differently sized hard regs.
111
kono
parents: 67
diff changeset
338 Assume hard regs fr* are 32 bits each, while r* are 64 bits each:
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
339 (set (reg:DI r0) (reg:DI fr0))
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
340 (set (reg:SI fr2) (reg:SI r0))
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
341 loads the low part of (reg:DI fr0) - i.e. fr1 - into fr2, while:
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
342 (set (reg:SI fr2) (reg:SI fr0))
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
343 loads the high part of (reg:DI fr0) into fr2.
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
344
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
345 We can't properly represent the latter case in our tables, so don't
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
346 record anything then. */
111
kono
parents: 67
diff changeset
347 else if (sn < hard_regno_nregs (sr, vd->e[sr].mode)
kono
parents: 67
diff changeset
348 && subreg_lowpart_offset (GET_MODE (dest), vd->e[sr].mode) != 0)
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
349 return;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
350
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
351 /* If SRC had been assigned a mode narrower than the copy, we can't
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
352 link DEST into the chain, because not all of the pieces of the
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
353 copy came from oldest_regno. */
111
kono
parents: 67
diff changeset
354 else if (sn > hard_regno_nregs (sr, vd->e[sr].mode))
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
355 return;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
356
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
357 /* Link DR at the end of the value chain used by SR. */
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
358
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
359 vd->e[dr].oldest_regno = vd->e[sr].oldest_regno;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
360
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
361 for (i = sr; vd->e[i].next_regno != INVALID_REGNUM; i = vd->e[i].next_regno)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
362 continue;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
363 vd->e[i].next_regno = dr;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
364
111
kono
parents: 67
diff changeset
365 if (flag_checking)
kono
parents: 67
diff changeset
366 validate_value_data (vd);
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
367 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
368
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
369 /* Return true if a mode change from ORIG to NEW is allowed for REGNO. */
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
370
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
371 static bool
111
kono
parents: 67
diff changeset
372 mode_change_ok (machine_mode orig_mode, machine_mode new_mode,
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
373 unsigned int regno ATTRIBUTE_UNUSED)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
374 {
111
kono
parents: 67
diff changeset
375 if (partial_subreg_p (orig_mode, new_mode))
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
376 return false;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
377
111
kono
parents: 67
diff changeset
378 return REG_CAN_CHANGE_MODE_P (regno, orig_mode, new_mode);
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
379 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
380
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
381 /* Register REGNO was originally set in ORIG_MODE. It - or a copy of it -
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
382 was copied in COPY_MODE to COPY_REGNO, and then COPY_REGNO was accessed
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
383 in NEW_MODE.
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
384 Return a NEW_MODE rtx for REGNO if that's OK, otherwise return NULL_RTX. */
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
385
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
386 static rtx
111
kono
parents: 67
diff changeset
387 maybe_mode_change (machine_mode orig_mode, machine_mode copy_mode,
kono
parents: 67
diff changeset
388 machine_mode new_mode, unsigned int regno,
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
389 unsigned int copy_regno ATTRIBUTE_UNUSED)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
390 {
111
kono
parents: 67
diff changeset
391 if (partial_subreg_p (copy_mode, orig_mode)
kono
parents: 67
diff changeset
392 && partial_subreg_p (copy_mode, new_mode))
kono
parents: 67
diff changeset
393 return NULL_RTX;
kono
parents: 67
diff changeset
394
kono
parents: 67
diff changeset
395 /* Avoid creating multiple copies of the stack pointer. Some ports
kono
parents: 67
diff changeset
396 assume there is one and only one stack pointer.
kono
parents: 67
diff changeset
397
kono
parents: 67
diff changeset
398 It's unclear if we need to do the same for other special registers. */
kono
parents: 67
diff changeset
399 if (regno == STACK_POINTER_REGNUM)
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
400 return NULL_RTX;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
401
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
402 if (orig_mode == new_mode)
111
kono
parents: 67
diff changeset
403 return gen_raw_REG (new_mode, regno);
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
404 else if (mode_change_ok (orig_mode, new_mode, regno))
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
405 {
111
kono
parents: 67
diff changeset
406 int copy_nregs = hard_regno_nregs (copy_regno, copy_mode);
kono
parents: 67
diff changeset
407 int use_nregs = hard_regno_nregs (copy_regno, new_mode);
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
408 int copy_offset
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
409 = GET_MODE_SIZE (copy_mode) / copy_nregs * (copy_nregs - use_nregs);
111
kono
parents: 67
diff changeset
410 unsigned int offset
kono
parents: 67
diff changeset
411 = subreg_size_lowpart_offset (GET_MODE_SIZE (new_mode) + copy_offset,
kono
parents: 67
diff changeset
412 GET_MODE_SIZE (orig_mode));
kono
parents: 67
diff changeset
413 regno += subreg_regno_offset (regno, orig_mode, offset, new_mode);
kono
parents: 67
diff changeset
414 if (targetm.hard_regno_mode_ok (regno, new_mode))
kono
parents: 67
diff changeset
415 return gen_raw_REG (new_mode, regno);
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
416 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
417 return NULL_RTX;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
418 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
419
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
420 /* Find the oldest copy of the value contained in REGNO that is in
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
421 register class CL and has mode MODE. If found, return an rtx
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
422 of that oldest register, otherwise return NULL. */
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
423
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
424 static rtx
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
425 find_oldest_value_reg (enum reg_class cl, rtx reg, struct value_data *vd)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
426 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
427 unsigned int regno = REGNO (reg);
111
kono
parents: 67
diff changeset
428 machine_mode mode = GET_MODE (reg);
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
429 unsigned int i;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
430
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
431 /* If we are accessing REG in some mode other that what we set it in,
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
432 make sure that the replacement is valid. In particular, consider
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
433 (set (reg:DI r11) (...))
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
434 (set (reg:SI r9) (reg:SI r11))
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
435 (set (reg:SI r10) (...))
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
436 (set (...) (reg:DI r9))
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
437 Replacing r9 with r11 is invalid. */
111
kono
parents: 67
diff changeset
438 if (mode != vd->e[regno].mode
kono
parents: 67
diff changeset
439 && REG_NREGS (reg) > hard_regno_nregs (regno, vd->e[regno].mode))
kono
parents: 67
diff changeset
440 return NULL_RTX;
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
441
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
442 for (i = vd->e[regno].oldest_regno; i != regno; i = vd->e[i].next_regno)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
443 {
111
kono
parents: 67
diff changeset
444 machine_mode oldmode = vd->e[i].mode;
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
445 rtx new_rtx;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
446
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
447 if (!in_hard_reg_set_p (reg_class_contents[cl], mode, i))
67
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 63
diff changeset
448 continue;
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
449
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
450 new_rtx = maybe_mode_change (oldmode, vd->e[regno].mode, mode, i, regno);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
451 if (new_rtx)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
452 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
453 ORIGINAL_REGNO (new_rtx) = ORIGINAL_REGNO (reg);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
454 REG_ATTRS (new_rtx) = REG_ATTRS (reg);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
455 REG_POINTER (new_rtx) = REG_POINTER (reg);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
456 return new_rtx;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
457 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
458 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
459
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
460 return NULL_RTX;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
461 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
462
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
463 /* If possible, replace the register at *LOC with the oldest register
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
464 in register class CL. Return true if successfully replaced. */
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
465
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
466 static bool
111
kono
parents: 67
diff changeset
467 replace_oldest_value_reg (rtx *loc, enum reg_class cl, rtx_insn *insn,
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
468 struct value_data *vd)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
469 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
470 rtx new_rtx = find_oldest_value_reg (cl, *loc, vd);
111
kono
parents: 67
diff changeset
471 if (new_rtx && (!DEBUG_INSN_P (insn) || !skip_debug_insn_p))
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
472 {
63
b7f97abdc517 update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
473 if (DEBUG_INSN_P (insn))
b7f97abdc517 update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
474 {
b7f97abdc517 update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
475 struct queued_debug_insn_change *change;
b7f97abdc517 update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
476
b7f97abdc517 update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
477 if (dump_file)
b7f97abdc517 update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
478 fprintf (dump_file, "debug_insn %u: queued replacing reg %u with %u\n",
b7f97abdc517 update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
479 INSN_UID (insn), REGNO (*loc), REGNO (new_rtx));
b7f97abdc517 update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
480
111
kono
parents: 67
diff changeset
481 change = queued_debug_insn_change_pool.allocate ();
63
b7f97abdc517 update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
482 change->next = vd->e[REGNO (new_rtx)].debug_insn_changes;
b7f97abdc517 update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
483 change->insn = insn;
b7f97abdc517 update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
484 change->loc = loc;
b7f97abdc517 update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
485 change->new_rtx = new_rtx;
b7f97abdc517 update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
486 vd->e[REGNO (new_rtx)].debug_insn_changes = change;
b7f97abdc517 update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
487 ++vd->n_debug_insn_changes;
b7f97abdc517 update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
488 return true;
b7f97abdc517 update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
489 }
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
490 if (dump_file)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
491 fprintf (dump_file, "insn %u: replaced reg %u with %u\n",
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
492 INSN_UID (insn), REGNO (*loc), REGNO (new_rtx));
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
493
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
494 validate_change (insn, loc, new_rtx, 1);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
495 return true;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
496 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
497 return false;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
498 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
499
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
500 /* Similar to replace_oldest_value_reg, but *LOC contains an address.
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
501 Adapted from find_reloads_address_1. CL is INDEX_REG_CLASS or
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
502 BASE_REG_CLASS depending on how the register is being considered. */
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
503
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
504 static bool
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
505 replace_oldest_value_addr (rtx *loc, enum reg_class cl,
111
kono
parents: 67
diff changeset
506 machine_mode mode, addr_space_t as,
kono
parents: 67
diff changeset
507 rtx_insn *insn, struct value_data *vd)
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
508 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
509 rtx x = *loc;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
510 RTX_CODE code = GET_CODE (x);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
511 const char *fmt;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
512 int i, j;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
513 bool changed = false;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
514
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
515 switch (code)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
516 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
517 case PLUS:
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
518 if (DEBUG_INSN_P (insn))
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
519 break;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
520
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
521 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
522 rtx orig_op0 = XEXP (x, 0);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
523 rtx orig_op1 = XEXP (x, 1);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
524 RTX_CODE code0 = GET_CODE (orig_op0);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
525 RTX_CODE code1 = GET_CODE (orig_op1);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
526 rtx op0 = orig_op0;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
527 rtx op1 = orig_op1;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
528 rtx *locI = NULL;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
529 rtx *locB = NULL;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
530 enum rtx_code index_code = SCRATCH;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
531
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
532 if (GET_CODE (op0) == SUBREG)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
533 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
534 op0 = SUBREG_REG (op0);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
535 code0 = GET_CODE (op0);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
536 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
537
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
538 if (GET_CODE (op1) == SUBREG)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
539 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
540 op1 = SUBREG_REG (op1);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
541 code1 = GET_CODE (op1);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
542 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
543
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
544 if (code0 == MULT || code0 == SIGN_EXTEND || code0 == TRUNCATE
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
545 || code0 == ZERO_EXTEND || code1 == MEM)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
546 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
547 locI = &XEXP (x, 0);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
548 locB = &XEXP (x, 1);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
549 index_code = GET_CODE (*locI);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
550 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
551 else if (code1 == MULT || code1 == SIGN_EXTEND || code1 == TRUNCATE
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
552 || code1 == ZERO_EXTEND || code0 == MEM)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
553 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
554 locI = &XEXP (x, 1);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
555 locB = &XEXP (x, 0);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
556 index_code = GET_CODE (*locI);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
557 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
558 else if (code0 == CONST_INT || code0 == CONST
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
559 || code0 == SYMBOL_REF || code0 == LABEL_REF)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
560 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
561 locB = &XEXP (x, 1);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
562 index_code = GET_CODE (XEXP (x, 0));
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
563 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
564 else if (code1 == CONST_INT || code1 == CONST
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
565 || code1 == SYMBOL_REF || code1 == LABEL_REF)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
566 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
567 locB = &XEXP (x, 0);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
568 index_code = GET_CODE (XEXP (x, 1));
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
569 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
570 else if (code0 == REG && code1 == REG)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
571 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
572 int index_op;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
573 unsigned regno0 = REGNO (op0), regno1 = REGNO (op1);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
574
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
575 if (REGNO_OK_FOR_INDEX_P (regno1)
111
kono
parents: 67
diff changeset
576 && regno_ok_for_base_p (regno0, mode, as, PLUS, REG))
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
577 index_op = 1;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
578 else if (REGNO_OK_FOR_INDEX_P (regno0)
111
kono
parents: 67
diff changeset
579 && regno_ok_for_base_p (regno1, mode, as, PLUS, REG))
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
580 index_op = 0;
111
kono
parents: 67
diff changeset
581 else if (regno_ok_for_base_p (regno0, mode, as, PLUS, REG)
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
582 || REGNO_OK_FOR_INDEX_P (regno1))
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
583 index_op = 1;
111
kono
parents: 67
diff changeset
584 else if (regno_ok_for_base_p (regno1, mode, as, PLUS, REG))
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
585 index_op = 0;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
586 else
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
587 index_op = 1;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
588
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
589 locI = &XEXP (x, index_op);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
590 locB = &XEXP (x, !index_op);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
591 index_code = GET_CODE (*locI);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
592 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
593 else if (code0 == REG)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
594 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
595 locI = &XEXP (x, 0);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
596 locB = &XEXP (x, 1);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
597 index_code = GET_CODE (*locI);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
598 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
599 else if (code1 == REG)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
600 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
601 locI = &XEXP (x, 1);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
602 locB = &XEXP (x, 0);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
603 index_code = GET_CODE (*locI);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
604 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
605
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
606 if (locI)
111
kono
parents: 67
diff changeset
607 changed |= replace_oldest_value_addr (locI, INDEX_REG_CLASS,
kono
parents: 67
diff changeset
608 mode, as, insn, vd);
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
609 if (locB)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
610 changed |= replace_oldest_value_addr (locB,
111
kono
parents: 67
diff changeset
611 base_reg_class (mode, as, PLUS,
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
612 index_code),
111
kono
parents: 67
diff changeset
613 mode, as, insn, vd);
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
614 return changed;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
615 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
616
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
617 case POST_INC:
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
618 case POST_DEC:
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
619 case POST_MODIFY:
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
620 case PRE_INC:
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
621 case PRE_DEC:
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
622 case PRE_MODIFY:
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
623 return false;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
624
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
625 case MEM:
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
626 return replace_oldest_value_mem (x, insn, vd);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
627
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
628 case REG:
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
629 return replace_oldest_value_reg (loc, cl, insn, vd);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
630
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
631 default:
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
632 break;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
633 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
634
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
635 fmt = GET_RTX_FORMAT (code);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
636 for (i = GET_RTX_LENGTH (code) - 1; i >= 0; i--)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
637 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
638 if (fmt[i] == 'e')
111
kono
parents: 67
diff changeset
639 changed |= replace_oldest_value_addr (&XEXP (x, i), cl, mode, as,
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
640 insn, vd);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
641 else if (fmt[i] == 'E')
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
642 for (j = XVECLEN (x, i) - 1; j >= 0; j--)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
643 changed |= replace_oldest_value_addr (&XVECEXP (x, i, j), cl,
111
kono
parents: 67
diff changeset
644 mode, as, insn, vd);
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
645 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
646
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
647 return changed;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
648 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
649
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
650 /* Similar to replace_oldest_value_reg, but X contains a memory. */
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
651
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
652 static bool
111
kono
parents: 67
diff changeset
653 replace_oldest_value_mem (rtx x, rtx_insn *insn, struct value_data *vd)
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
654 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
655 enum reg_class cl;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
656
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
657 if (DEBUG_INSN_P (insn))
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
658 cl = ALL_REGS;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
659 else
111
kono
parents: 67
diff changeset
660 cl = base_reg_class (GET_MODE (x), MEM_ADDR_SPACE (x), MEM, SCRATCH);
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
661
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
662 return replace_oldest_value_addr (&XEXP (x, 0), cl,
111
kono
parents: 67
diff changeset
663 GET_MODE (x), MEM_ADDR_SPACE (x),
kono
parents: 67
diff changeset
664 insn, vd);
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
665 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
666
63
b7f97abdc517 update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
667 /* Apply all queued updates for DEBUG_INSNs that change some reg to
b7f97abdc517 update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
668 register REGNO. */
b7f97abdc517 update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
669
b7f97abdc517 update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
670 static void
b7f97abdc517 update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
671 apply_debug_insn_changes (struct value_data *vd, unsigned int regno)
b7f97abdc517 update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
672 {
b7f97abdc517 update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
673 struct queued_debug_insn_change *change;
111
kono
parents: 67
diff changeset
674 rtx_insn *last_insn = vd->e[regno].debug_insn_changes->insn;
63
b7f97abdc517 update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
675
b7f97abdc517 update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
676 for (change = vd->e[regno].debug_insn_changes;
b7f97abdc517 update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
677 change;
b7f97abdc517 update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
678 change = change->next)
b7f97abdc517 update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
679 {
b7f97abdc517 update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
680 if (last_insn != change->insn)
b7f97abdc517 update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
681 {
b7f97abdc517 update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
682 apply_change_group ();
b7f97abdc517 update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
683 last_insn = change->insn;
b7f97abdc517 update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
684 }
b7f97abdc517 update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
685 validate_change (change->insn, change->loc, change->new_rtx, 1);
b7f97abdc517 update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
686 }
b7f97abdc517 update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
687 apply_change_group ();
b7f97abdc517 update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
688 }
b7f97abdc517 update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
689
b7f97abdc517 update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
690 /* Called via note_uses, for all used registers in a real insn
b7f97abdc517 update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
691 apply DEBUG_INSN changes that change registers to the used
b7f97abdc517 update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
692 registers. */
b7f97abdc517 update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
693
b7f97abdc517 update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
694 static void
111
kono
parents: 67
diff changeset
695 cprop_find_used_regs (rtx *loc, void *data)
63
b7f97abdc517 update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
696 {
111
kono
parents: 67
diff changeset
697 struct value_data *const vd = (struct value_data *) data;
kono
parents: 67
diff changeset
698 subrtx_iterator::array_type array;
kono
parents: 67
diff changeset
699 FOR_EACH_SUBRTX (iter, array, *loc, NONCONST)
kono
parents: 67
diff changeset
700 {
kono
parents: 67
diff changeset
701 const_rtx x = *iter;
kono
parents: 67
diff changeset
702 if (REG_P (x))
kono
parents: 67
diff changeset
703 {
kono
parents: 67
diff changeset
704 unsigned int regno = REGNO (x);
kono
parents: 67
diff changeset
705 if (vd->e[regno].debug_insn_changes)
kono
parents: 67
diff changeset
706 {
kono
parents: 67
diff changeset
707 apply_debug_insn_changes (vd, regno);
kono
parents: 67
diff changeset
708 free_debug_insn_changes (vd, regno);
kono
parents: 67
diff changeset
709 }
kono
parents: 67
diff changeset
710 }
kono
parents: 67
diff changeset
711 }
kono
parents: 67
diff changeset
712 }
kono
parents: 67
diff changeset
713
kono
parents: 67
diff changeset
714 /* Apply clobbers of INSN in PATTERN and C_I_F_U to value_data VD. */
kono
parents: 67
diff changeset
715
kono
parents: 67
diff changeset
716 static void
kono
parents: 67
diff changeset
717 kill_clobbered_values (rtx_insn *insn, struct value_data *vd)
kono
parents: 67
diff changeset
718 {
kono
parents: 67
diff changeset
719 note_stores (PATTERN (insn), kill_clobbered_value, vd);
kono
parents: 67
diff changeset
720
kono
parents: 67
diff changeset
721 if (CALL_P (insn))
kono
parents: 67
diff changeset
722 {
kono
parents: 67
diff changeset
723 rtx exp;
kono
parents: 67
diff changeset
724
kono
parents: 67
diff changeset
725 for (exp = CALL_INSN_FUNCTION_USAGE (insn); exp; exp = XEXP (exp, 1))
kono
parents: 67
diff changeset
726 {
kono
parents: 67
diff changeset
727 rtx x = XEXP (exp, 0);
kono
parents: 67
diff changeset
728 if (GET_CODE (x) == CLOBBER)
kono
parents: 67
diff changeset
729 kill_value (SET_DEST (x), vd);
kono
parents: 67
diff changeset
730 }
kono
parents: 67
diff changeset
731 }
63
b7f97abdc517 update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
732 }
b7f97abdc517 update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
733
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
734 /* Perform the forward copy propagation on basic block BB. */
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
735
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
736 static bool
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
737 copyprop_hardreg_forward_1 (basic_block bb, struct value_data *vd)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
738 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
739 bool anything_changed = false;
111
kono
parents: 67
diff changeset
740 rtx_insn *insn, *next;
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
741
111
kono
parents: 67
diff changeset
742 for (insn = BB_HEAD (bb); ; insn = next)
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
743 {
111
kono
parents: 67
diff changeset
744 int n_ops, i, predicated;
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
745 bool is_asm, any_replacements;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
746 rtx set;
111
kono
parents: 67
diff changeset
747 rtx link;
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
748 bool replaced[MAX_RECOG_OPERANDS];
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
749 bool changed = false;
111
kono
parents: 67
diff changeset
750 struct kill_set_value_data ksvd;
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
751
111
kono
parents: 67
diff changeset
752 next = NEXT_INSN (insn);
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
753 if (!NONDEBUG_INSN_P (insn))
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
754 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
755 if (DEBUG_INSN_P (insn))
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
756 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
757 rtx loc = INSN_VAR_LOCATION_LOC (insn);
63
b7f97abdc517 update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
758 if (!VAR_LOC_UNKNOWN_P (loc))
b7f97abdc517 update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
759 replace_oldest_value_addr (&INSN_VAR_LOCATION_LOC (insn),
b7f97abdc517 update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
760 ALL_REGS, GET_MODE (loc),
111
kono
parents: 67
diff changeset
761 ADDR_SPACE_GENERIC, insn, vd);
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
762 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
763
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
764 if (insn == BB_END (bb))
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
765 break;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
766 else
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
767 continue;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
768 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
769
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
770 set = single_set (insn);
111
kono
parents: 67
diff changeset
771
kono
parents: 67
diff changeset
772 /* Detect noop sets and remove them before processing side effects. */
kono
parents: 67
diff changeset
773 if (set && REG_P (SET_DEST (set)) && REG_P (SET_SRC (set)))
kono
parents: 67
diff changeset
774 {
kono
parents: 67
diff changeset
775 unsigned int regno = REGNO (SET_SRC (set));
kono
parents: 67
diff changeset
776 rtx r1 = find_oldest_value_reg (REGNO_REG_CLASS (regno),
kono
parents: 67
diff changeset
777 SET_DEST (set), vd);
kono
parents: 67
diff changeset
778 rtx r2 = find_oldest_value_reg (REGNO_REG_CLASS (regno),
kono
parents: 67
diff changeset
779 SET_SRC (set), vd);
kono
parents: 67
diff changeset
780 if (rtx_equal_p (r1 ? r1 : SET_DEST (set), r2 ? r2 : SET_SRC (set)))
kono
parents: 67
diff changeset
781 {
kono
parents: 67
diff changeset
782 bool last = insn == BB_END (bb);
kono
parents: 67
diff changeset
783 delete_insn (insn);
kono
parents: 67
diff changeset
784 if (last)
kono
parents: 67
diff changeset
785 break;
kono
parents: 67
diff changeset
786 continue;
kono
parents: 67
diff changeset
787 }
kono
parents: 67
diff changeset
788 }
kono
parents: 67
diff changeset
789
kono
parents: 67
diff changeset
790 extract_constrain_insn (insn);
kono
parents: 67
diff changeset
791 preprocess_constraints (insn);
kono
parents: 67
diff changeset
792 const operand_alternative *op_alt = which_op_alt ();
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
793 n_ops = recog_data.n_operands;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
794 is_asm = asm_noperands (PATTERN (insn)) >= 0;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
795
111
kono
parents: 67
diff changeset
796 /* Simplify the code below by promoting OP_OUT to OP_INOUT
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
797 in predicated instructions. */
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
798
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
799 predicated = GET_CODE (PATTERN (insn)) == COND_EXEC;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
800 for (i = 0; i < n_ops; ++i)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
801 {
111
kono
parents: 67
diff changeset
802 int matches = op_alt[i].matches;
kono
parents: 67
diff changeset
803 if (matches >= 0 || op_alt[i].matched >= 0
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
804 || (predicated && recog_data.operand_type[i] == OP_OUT))
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
805 recog_data.operand_type[i] = OP_INOUT;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
806 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
807
63
b7f97abdc517 update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
808 /* Apply changes to earlier DEBUG_INSNs if possible. */
b7f97abdc517 update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
809 if (vd->n_debug_insn_changes)
b7f97abdc517 update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
810 note_uses (&PATTERN (insn), cprop_find_used_regs, vd);
b7f97abdc517 update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 55
diff changeset
811
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
812 /* For each earlyclobber operand, zap the value data. */
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
813 for (i = 0; i < n_ops; i++)
111
kono
parents: 67
diff changeset
814 if (op_alt[i].earlyclobber)
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
815 kill_value (recog_data.operand[i], vd);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
816
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
817 /* Within asms, a clobber cannot overlap inputs or outputs.
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
818 I wouldn't think this were true for regular insns, but
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
819 scan_rtx treats them like that... */
111
kono
parents: 67
diff changeset
820 kill_clobbered_values (insn, vd);
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
821
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
822 /* Kill all auto-incremented values. */
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
823 /* ??? REG_INC is useless, since stack pushes aren't done that way. */
111
kono
parents: 67
diff changeset
824 kill_autoinc_value (insn, vd);
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
825
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
826 /* Kill all early-clobbered operands. */
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
827 for (i = 0; i < n_ops; i++)
111
kono
parents: 67
diff changeset
828 if (op_alt[i].earlyclobber)
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
829 kill_value (recog_data.operand[i], vd);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
830
111
kono
parents: 67
diff changeset
831 /* If we have dead sets in the insn, then we need to note these as we
kono
parents: 67
diff changeset
832 would clobbers. */
kono
parents: 67
diff changeset
833 for (link = REG_NOTES (insn); link; link = XEXP (link, 1))
kono
parents: 67
diff changeset
834 {
kono
parents: 67
diff changeset
835 if (REG_NOTE_KIND (link) == REG_UNUSED)
kono
parents: 67
diff changeset
836 {
kono
parents: 67
diff changeset
837 kill_value (XEXP (link, 0), vd);
kono
parents: 67
diff changeset
838 /* Furthermore, if the insn looked like a single-set,
kono
parents: 67
diff changeset
839 but the dead store kills the source value of that
kono
parents: 67
diff changeset
840 set, then we can no-longer use the plain move
kono
parents: 67
diff changeset
841 special case below. */
kono
parents: 67
diff changeset
842 if (set
kono
parents: 67
diff changeset
843 && reg_overlap_mentioned_p (XEXP (link, 0), SET_SRC (set)))
kono
parents: 67
diff changeset
844 set = NULL;
kono
parents: 67
diff changeset
845 }
kono
parents: 67
diff changeset
846 }
kono
parents: 67
diff changeset
847
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
848 /* Special-case plain move instructions, since we may well
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
849 be able to do the move from a different register class. */
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
850 if (set && REG_P (SET_SRC (set)))
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
851 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
852 rtx src = SET_SRC (set);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
853 unsigned int regno = REGNO (src);
111
kono
parents: 67
diff changeset
854 machine_mode mode = GET_MODE (src);
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
855 unsigned int i;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
856 rtx new_rtx;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
857
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
858 /* If we are accessing SRC in some mode other that what we
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
859 set it in, make sure that the replacement is valid. */
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
860 if (mode != vd->e[regno].mode)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
861 {
111
kono
parents: 67
diff changeset
862 if (REG_NREGS (src)
kono
parents: 67
diff changeset
863 > hard_regno_nregs (regno, vd->e[regno].mode))
kono
parents: 67
diff changeset
864 goto no_move_special_case;
kono
parents: 67
diff changeset
865
kono
parents: 67
diff changeset
866 /* And likewise, if we are narrowing on big endian the transformation
kono
parents: 67
diff changeset
867 is also invalid. */
kono
parents: 67
diff changeset
868 if (REG_NREGS (src) < hard_regno_nregs (regno, vd->e[regno].mode)
kono
parents: 67
diff changeset
869 && subreg_lowpart_offset (mode, vd->e[regno].mode) != 0)
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
870 goto no_move_special_case;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
871 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
872
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
873 /* If the destination is also a register, try to find a source
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
874 register in the same class. */
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
875 if (REG_P (SET_DEST (set)))
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
876 {
111
kono
parents: 67
diff changeset
877 new_rtx = find_oldest_value_reg (REGNO_REG_CLASS (regno),
kono
parents: 67
diff changeset
878 src, vd);
kono
parents: 67
diff changeset
879
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
880 if (new_rtx && validate_change (insn, &SET_SRC (set), new_rtx, 0))
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
881 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
882 if (dump_file)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
883 fprintf (dump_file,
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
884 "insn %u: replaced reg %u with %u\n",
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
885 INSN_UID (insn), regno, REGNO (new_rtx));
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
886 changed = true;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
887 goto did_replacement;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
888 }
111
kono
parents: 67
diff changeset
889 /* We need to re-extract as validate_change clobbers
kono
parents: 67
diff changeset
890 recog_data. */
kono
parents: 67
diff changeset
891 extract_constrain_insn (insn);
kono
parents: 67
diff changeset
892 preprocess_constraints (insn);
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
893 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
894
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
895 /* Otherwise, try all valid registers and see if its valid. */
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
896 for (i = vd->e[regno].oldest_regno; i != regno;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
897 i = vd->e[i].next_regno)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
898 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
899 new_rtx = maybe_mode_change (vd->e[i].mode, vd->e[regno].mode,
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
900 mode, i, regno);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
901 if (new_rtx != NULL_RTX)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
902 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
903 if (validate_change (insn, &SET_SRC (set), new_rtx, 0))
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
904 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
905 ORIGINAL_REGNO (new_rtx) = ORIGINAL_REGNO (src);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
906 REG_ATTRS (new_rtx) = REG_ATTRS (src);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
907 REG_POINTER (new_rtx) = REG_POINTER (src);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
908 if (dump_file)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
909 fprintf (dump_file,
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
910 "insn %u: replaced reg %u with %u\n",
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
911 INSN_UID (insn), regno, REGNO (new_rtx));
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
912 changed = true;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
913 goto did_replacement;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
914 }
111
kono
parents: 67
diff changeset
915 /* We need to re-extract as validate_change clobbers
kono
parents: 67
diff changeset
916 recog_data. */
kono
parents: 67
diff changeset
917 extract_constrain_insn (insn);
kono
parents: 67
diff changeset
918 preprocess_constraints (insn);
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
919 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
920 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
921 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
922 no_move_special_case:
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
923
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
924 any_replacements = false;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
925
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
926 /* For each input operand, replace a hard register with the
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
927 eldest live copy that's in an appropriate register class. */
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
928 for (i = 0; i < n_ops; i++)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
929 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
930 replaced[i] = false;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
931
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
932 /* Don't scan match_operand here, since we've no reg class
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
933 information to pass down. Any operands that we could
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
934 substitute in will be represented elsewhere. */
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
935 if (recog_data.constraints[i][0] == '\0')
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
936 continue;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
937
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
938 /* Don't replace in asms intentionally referencing hard regs. */
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
939 if (is_asm && REG_P (recog_data.operand[i])
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
940 && (REGNO (recog_data.operand[i])
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
941 == ORIGINAL_REGNO (recog_data.operand[i])))
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
942 continue;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
943
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
944 if (recog_data.operand_type[i] == OP_IN)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
945 {
111
kono
parents: 67
diff changeset
946 if (op_alt[i].is_address)
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
947 replaced[i]
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
948 = replace_oldest_value_addr (recog_data.operand_loc[i],
111
kono
parents: 67
diff changeset
949 alternative_class (op_alt, i),
kono
parents: 67
diff changeset
950 VOIDmode, ADDR_SPACE_GENERIC,
kono
parents: 67
diff changeset
951 insn, vd);
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
952 else if (REG_P (recog_data.operand[i]))
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
953 replaced[i]
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
954 = replace_oldest_value_reg (recog_data.operand_loc[i],
111
kono
parents: 67
diff changeset
955 alternative_class (op_alt, i),
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
956 insn, vd);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
957 else if (MEM_P (recog_data.operand[i]))
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
958 replaced[i] = replace_oldest_value_mem (recog_data.operand[i],
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
959 insn, vd);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
960 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
961 else if (MEM_P (recog_data.operand[i]))
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
962 replaced[i] = replace_oldest_value_mem (recog_data.operand[i],
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
963 insn, vd);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
964
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
965 /* If we performed any replacement, update match_dups. */
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
966 if (replaced[i])
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
967 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
968 int j;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
969 rtx new_rtx;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
970
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
971 new_rtx = *recog_data.operand_loc[i];
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
972 recog_data.operand[i] = new_rtx;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
973 for (j = 0; j < recog_data.n_dups; j++)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
974 if (recog_data.dup_num[j] == i)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
975 validate_unshare_change (insn, recog_data.dup_loc[j], new_rtx, 1);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
976
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
977 any_replacements = true;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
978 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
979 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
980
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
981 if (any_replacements)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
982 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
983 if (! apply_change_group ())
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
984 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
985 for (i = 0; i < n_ops; i++)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
986 if (replaced[i])
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
987 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
988 rtx old = *recog_data.operand_loc[i];
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
989 recog_data.operand[i] = old;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
990 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
991
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
992 if (dump_file)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
993 fprintf (dump_file,
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
994 "insn %u: reg replacements not verified\n",
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
995 INSN_UID (insn));
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
996 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
997 else
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
998 changed = true;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
999 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1000
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1001 did_replacement:
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1002 if (changed)
67
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 63
diff changeset
1003 {
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 63
diff changeset
1004 anything_changed = true;
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 63
diff changeset
1005
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 63
diff changeset
1006 /* If something changed, perhaps further changes to earlier
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 63
diff changeset
1007 DEBUG_INSNs can be applied. */
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 63
diff changeset
1008 if (vd->n_debug_insn_changes)
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 63
diff changeset
1009 note_uses (&PATTERN (insn), cprop_find_used_regs, vd);
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 63
diff changeset
1010 }
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1011
111
kono
parents: 67
diff changeset
1012 ksvd.vd = vd;
kono
parents: 67
diff changeset
1013 ksvd.ignore_set_reg = NULL_RTX;
kono
parents: 67
diff changeset
1014
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1015 /* Clobber call-clobbered registers. */
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1016 if (CALL_P (insn))
111
kono
parents: 67
diff changeset
1017 {
kono
parents: 67
diff changeset
1018 unsigned int set_regno = INVALID_REGNUM;
kono
parents: 67
diff changeset
1019 unsigned int set_nregs = 0;
kono
parents: 67
diff changeset
1020 unsigned int regno;
kono
parents: 67
diff changeset
1021 rtx exp;
kono
parents: 67
diff changeset
1022 HARD_REG_SET regs_invalidated_by_this_call;
kono
parents: 67
diff changeset
1023
kono
parents: 67
diff changeset
1024 for (exp = CALL_INSN_FUNCTION_USAGE (insn); exp; exp = XEXP (exp, 1))
kono
parents: 67
diff changeset
1025 {
kono
parents: 67
diff changeset
1026 rtx x = XEXP (exp, 0);
kono
parents: 67
diff changeset
1027 if (GET_CODE (x) == SET)
kono
parents: 67
diff changeset
1028 {
kono
parents: 67
diff changeset
1029 rtx dest = SET_DEST (x);
kono
parents: 67
diff changeset
1030 kill_value (dest, vd);
kono
parents: 67
diff changeset
1031 set_value_regno (REGNO (dest), GET_MODE (dest), vd);
kono
parents: 67
diff changeset
1032 copy_value (dest, SET_SRC (x), vd);
kono
parents: 67
diff changeset
1033 ksvd.ignore_set_reg = dest;
kono
parents: 67
diff changeset
1034 set_regno = REGNO (dest);
kono
parents: 67
diff changeset
1035 set_nregs = REG_NREGS (dest);
kono
parents: 67
diff changeset
1036 break;
kono
parents: 67
diff changeset
1037 }
kono
parents: 67
diff changeset
1038 }
kono
parents: 67
diff changeset
1039
kono
parents: 67
diff changeset
1040 get_call_reg_set_usage (insn,
kono
parents: 67
diff changeset
1041 &regs_invalidated_by_this_call,
kono
parents: 67
diff changeset
1042 regs_invalidated_by_call);
kono
parents: 67
diff changeset
1043 for (regno = 0; regno < FIRST_PSEUDO_REGISTER; regno++)
kono
parents: 67
diff changeset
1044 if ((TEST_HARD_REG_BIT (regs_invalidated_by_this_call, regno)
kono
parents: 67
diff changeset
1045 || (targetm.hard_regno_call_part_clobbered
kono
parents: 67
diff changeset
1046 (regno, vd->e[regno].mode)))
kono
parents: 67
diff changeset
1047 && (regno < set_regno || regno >= set_regno + set_nregs))
kono
parents: 67
diff changeset
1048 kill_value_regno (regno, 1, vd);
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1049
111
kono
parents: 67
diff changeset
1050 /* If SET was seen in CALL_INSN_FUNCTION_USAGE, and SET_SRC
kono
parents: 67
diff changeset
1051 of the SET isn't in regs_invalidated_by_call hard reg set,
kono
parents: 67
diff changeset
1052 but instead among CLOBBERs on the CALL_INSN, we could wrongly
kono
parents: 67
diff changeset
1053 assume the value in it is still live. */
kono
parents: 67
diff changeset
1054 if (ksvd.ignore_set_reg)
kono
parents: 67
diff changeset
1055 kill_clobbered_values (insn, vd);
kono
parents: 67
diff changeset
1056 }
kono
parents: 67
diff changeset
1057
kono
parents: 67
diff changeset
1058 bool copy_p = (set
kono
parents: 67
diff changeset
1059 && REG_P (SET_DEST (set))
kono
parents: 67
diff changeset
1060 && REG_P (SET_SRC (set)));
kono
parents: 67
diff changeset
1061 bool noop_p = (copy_p
kono
parents: 67
diff changeset
1062 && rtx_equal_p (SET_DEST (set), SET_SRC (set)));
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1063
111
kono
parents: 67
diff changeset
1064 /* If a noop move is using narrower mode than we have recorded,
kono
parents: 67
diff changeset
1065 we need to either remove the noop move, or kill_set_value. */
kono
parents: 67
diff changeset
1066 if (noop_p
kono
parents: 67
diff changeset
1067 && partial_subreg_p (GET_MODE (SET_DEST (set)),
kono
parents: 67
diff changeset
1068 vd->e[REGNO (SET_DEST (set))].mode))
kono
parents: 67
diff changeset
1069 {
kono
parents: 67
diff changeset
1070 if (noop_move_p (insn))
kono
parents: 67
diff changeset
1071 {
kono
parents: 67
diff changeset
1072 bool last = insn == BB_END (bb);
kono
parents: 67
diff changeset
1073 delete_insn (insn);
kono
parents: 67
diff changeset
1074 if (last)
kono
parents: 67
diff changeset
1075 break;
kono
parents: 67
diff changeset
1076 }
kono
parents: 67
diff changeset
1077 else
kono
parents: 67
diff changeset
1078 noop_p = false;
kono
parents: 67
diff changeset
1079 }
kono
parents: 67
diff changeset
1080
kono
parents: 67
diff changeset
1081 if (!noop_p)
kono
parents: 67
diff changeset
1082 {
kono
parents: 67
diff changeset
1083 /* Notice stores. */
kono
parents: 67
diff changeset
1084 note_stores (PATTERN (insn), kill_set_value, &ksvd);
kono
parents: 67
diff changeset
1085
kono
parents: 67
diff changeset
1086 /* Notice copies. */
kono
parents: 67
diff changeset
1087 if (copy_p)
kono
parents: 67
diff changeset
1088 copy_value (SET_DEST (set), SET_SRC (set), vd);
kono
parents: 67
diff changeset
1089 }
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1090
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1091 if (insn == BB_END (bb))
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1092 break;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1093 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1094
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1095 return anything_changed;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1096 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1097
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1098 /* Dump the value chain data to stderr. */
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1099
67
f6334be47118 update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents: 63
diff changeset
1100 DEBUG_FUNCTION void
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1101 debug_value_data (struct value_data *vd)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1102 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1103 HARD_REG_SET set;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1104 unsigned int i, j;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1105
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1106 CLEAR_HARD_REG_SET (set);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1107
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1108 for (i = 0; i < FIRST_PSEUDO_REGISTER; ++i)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1109 if (vd->e[i].oldest_regno == i)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1110 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1111 if (vd->e[i].mode == VOIDmode)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1112 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1113 if (vd->e[i].next_regno != INVALID_REGNUM)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1114 fprintf (stderr, "[%u] Bad next_regno for empty chain (%u)\n",
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1115 i, vd->e[i].next_regno);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1116 continue;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1117 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1118
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1119 SET_HARD_REG_BIT (set, i);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1120 fprintf (stderr, "[%u %s] ", i, GET_MODE_NAME (vd->e[i].mode));
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1121
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1122 for (j = vd->e[i].next_regno;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1123 j != INVALID_REGNUM;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1124 j = vd->e[j].next_regno)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1125 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1126 if (TEST_HARD_REG_BIT (set, j))
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1127 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1128 fprintf (stderr, "[%u] Loop in regno chain\n", j);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1129 return;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1130 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1131
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1132 if (vd->e[j].oldest_regno != i)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1133 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1134 fprintf (stderr, "[%u] Bad oldest_regno (%u)\n",
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1135 j, vd->e[j].oldest_regno);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1136 return;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1137 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1138 SET_HARD_REG_BIT (set, j);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1139 fprintf (stderr, "[%u %s] ", j, GET_MODE_NAME (vd->e[j].mode));
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1140 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1141 fputc ('\n', stderr);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1142 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1143
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1144 for (i = 0; i < FIRST_PSEUDO_REGISTER; ++i)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1145 if (! TEST_HARD_REG_BIT (set, i)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1146 && (vd->e[i].mode != VOIDmode
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1147 || vd->e[i].oldest_regno != i
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1148 || vd->e[i].next_regno != INVALID_REGNUM))
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1149 fprintf (stderr, "[%u] Non-empty reg in chain (%s %u %i)\n",
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1150 i, GET_MODE_NAME (vd->e[i].mode), vd->e[i].oldest_regno,
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1151 vd->e[i].next_regno);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1152 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1153
111
kono
parents: 67
diff changeset
1154 /* Do copyprop_hardreg_forward_1 for a single basic block BB.
kono
parents: 67
diff changeset
1155 DEBUG_INSN is skipped since we do not want to involve DF related
kono
parents: 67
diff changeset
1156 staff as how it is handled in function pass_cprop_hardreg::execute.
kono
parents: 67
diff changeset
1157
kono
parents: 67
diff changeset
1158 NOTE: Currently it is only used for shrink-wrap. Maybe extend it
kono
parents: 67
diff changeset
1159 to handle DEBUG_INSN for other uses. */
kono
parents: 67
diff changeset
1160
kono
parents: 67
diff changeset
1161 void
kono
parents: 67
diff changeset
1162 copyprop_hardreg_forward_bb_without_debug_insn (basic_block bb)
kono
parents: 67
diff changeset
1163 {
kono
parents: 67
diff changeset
1164 struct value_data *vd;
kono
parents: 67
diff changeset
1165 vd = XNEWVEC (struct value_data, 1);
kono
parents: 67
diff changeset
1166 init_value_data (vd);
kono
parents: 67
diff changeset
1167
kono
parents: 67
diff changeset
1168 skip_debug_insn_p = true;
kono
parents: 67
diff changeset
1169 copyprop_hardreg_forward_1 (bb, vd);
kono
parents: 67
diff changeset
1170 free (vd);
kono
parents: 67
diff changeset
1171 skip_debug_insn_p = false;
kono
parents: 67
diff changeset
1172 }
kono
parents: 67
diff changeset
1173
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1174 static void
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1175 validate_value_data (struct value_data *vd)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1176 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1177 HARD_REG_SET set;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1178 unsigned int i, j;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1179
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1180 CLEAR_HARD_REG_SET (set);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1181
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1182 for (i = 0; i < FIRST_PSEUDO_REGISTER; ++i)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1183 if (vd->e[i].oldest_regno == i)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1184 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1185 if (vd->e[i].mode == VOIDmode)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1186 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1187 if (vd->e[i].next_regno != INVALID_REGNUM)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1188 internal_error ("validate_value_data: [%u] Bad next_regno for empty chain (%u)",
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1189 i, vd->e[i].next_regno);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1190 continue;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1191 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1192
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1193 SET_HARD_REG_BIT (set, i);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1194
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1195 for (j = vd->e[i].next_regno;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1196 j != INVALID_REGNUM;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1197 j = vd->e[j].next_regno)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1198 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1199 if (TEST_HARD_REG_BIT (set, j))
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1200 internal_error ("validate_value_data: Loop in regno chain (%u)",
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1201 j);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1202 if (vd->e[j].oldest_regno != i)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1203 internal_error ("validate_value_data: [%u] Bad oldest_regno (%u)",
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1204 j, vd->e[j].oldest_regno);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1205
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1206 SET_HARD_REG_BIT (set, j);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1207 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1208 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1209
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1210 for (i = 0; i < FIRST_PSEUDO_REGISTER; ++i)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1211 if (! TEST_HARD_REG_BIT (set, i)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1212 && (vd->e[i].mode != VOIDmode
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1213 || vd->e[i].oldest_regno != i
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1214 || vd->e[i].next_regno != INVALID_REGNUM))
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1215 internal_error ("validate_value_data: [%u] Non-empty reg in chain (%s %u %i)",
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1216 i, GET_MODE_NAME (vd->e[i].mode), vd->e[i].oldest_regno,
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1217 vd->e[i].next_regno);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1218 }
111
kono
parents: 67
diff changeset
1219
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1220
111
kono
parents: 67
diff changeset
1221 namespace {
kono
parents: 67
diff changeset
1222
kono
parents: 67
diff changeset
1223 const pass_data pass_data_cprop_hardreg =
kono
parents: 67
diff changeset
1224 {
kono
parents: 67
diff changeset
1225 RTL_PASS, /* type */
kono
parents: 67
diff changeset
1226 "cprop_hardreg", /* name */
kono
parents: 67
diff changeset
1227 OPTGROUP_NONE, /* optinfo_flags */
kono
parents: 67
diff changeset
1228 TV_CPROP_REGISTERS, /* tv_id */
kono
parents: 67
diff changeset
1229 0, /* properties_required */
kono
parents: 67
diff changeset
1230 0, /* properties_provided */
kono
parents: 67
diff changeset
1231 0, /* properties_destroyed */
kono
parents: 67
diff changeset
1232 0, /* todo_flags_start */
kono
parents: 67
diff changeset
1233 TODO_df_finish, /* todo_flags_finish */
kono
parents: 67
diff changeset
1234 };
kono
parents: 67
diff changeset
1235
kono
parents: 67
diff changeset
1236 class pass_cprop_hardreg : public rtl_opt_pass
kono
parents: 67
diff changeset
1237 {
kono
parents: 67
diff changeset
1238 public:
kono
parents: 67
diff changeset
1239 pass_cprop_hardreg (gcc::context *ctxt)
kono
parents: 67
diff changeset
1240 : rtl_opt_pass (pass_data_cprop_hardreg, ctxt)
kono
parents: 67
diff changeset
1241 {}
kono
parents: 67
diff changeset
1242
kono
parents: 67
diff changeset
1243 /* opt_pass methods: */
kono
parents: 67
diff changeset
1244 virtual bool gate (function *)
kono
parents: 67
diff changeset
1245 {
kono
parents: 67
diff changeset
1246 return (optimize > 0 && (flag_cprop_registers));
kono
parents: 67
diff changeset
1247 }
kono
parents: 67
diff changeset
1248
kono
parents: 67
diff changeset
1249 virtual unsigned int execute (function *);
kono
parents: 67
diff changeset
1250
kono
parents: 67
diff changeset
1251 }; // class pass_cprop_hardreg
kono
parents: 67
diff changeset
1252
kono
parents: 67
diff changeset
1253 unsigned int
kono
parents: 67
diff changeset
1254 pass_cprop_hardreg::execute (function *fun)
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1255 {
111
kono
parents: 67
diff changeset
1256 struct value_data *all_vd;
kono
parents: 67
diff changeset
1257 basic_block bb;
kono
parents: 67
diff changeset
1258 bool analyze_called = false;
kono
parents: 67
diff changeset
1259
kono
parents: 67
diff changeset
1260 all_vd = XNEWVEC (struct value_data, last_basic_block_for_fn (fun));
kono
parents: 67
diff changeset
1261
kono
parents: 67
diff changeset
1262 auto_sbitmap visited (last_basic_block_for_fn (fun));
kono
parents: 67
diff changeset
1263 bitmap_clear (visited);
kono
parents: 67
diff changeset
1264
kono
parents: 67
diff changeset
1265 FOR_EACH_BB_FN (bb, fun)
kono
parents: 67
diff changeset
1266 {
kono
parents: 67
diff changeset
1267 bitmap_set_bit (visited, bb->index);
kono
parents: 67
diff changeset
1268
kono
parents: 67
diff changeset
1269 /* If a block has a single predecessor, that we've already
kono
parents: 67
diff changeset
1270 processed, begin with the value data that was live at
kono
parents: 67
diff changeset
1271 the end of the predecessor block. */
kono
parents: 67
diff changeset
1272 /* ??? Ought to use more intelligent queuing of blocks. */
kono
parents: 67
diff changeset
1273 if (single_pred_p (bb)
kono
parents: 67
diff changeset
1274 && bitmap_bit_p (visited, single_pred (bb)->index)
kono
parents: 67
diff changeset
1275 && ! (single_pred_edge (bb)->flags & (EDGE_ABNORMAL_CALL | EDGE_EH)))
kono
parents: 67
diff changeset
1276 {
kono
parents: 67
diff changeset
1277 all_vd[bb->index] = all_vd[single_pred (bb)->index];
kono
parents: 67
diff changeset
1278 if (all_vd[bb->index].n_debug_insn_changes)
kono
parents: 67
diff changeset
1279 {
kono
parents: 67
diff changeset
1280 unsigned int regno;
kono
parents: 67
diff changeset
1281
kono
parents: 67
diff changeset
1282 for (regno = 0; regno < FIRST_PSEUDO_REGISTER; regno++)
kono
parents: 67
diff changeset
1283 {
kono
parents: 67
diff changeset
1284 if (all_vd[bb->index].e[regno].debug_insn_changes)
kono
parents: 67
diff changeset
1285 {
kono
parents: 67
diff changeset
1286 all_vd[bb->index].e[regno].debug_insn_changes = NULL;
kono
parents: 67
diff changeset
1287 if (--all_vd[bb->index].n_debug_insn_changes == 0)
kono
parents: 67
diff changeset
1288 break;
kono
parents: 67
diff changeset
1289 }
kono
parents: 67
diff changeset
1290 }
kono
parents: 67
diff changeset
1291 }
kono
parents: 67
diff changeset
1292 }
kono
parents: 67
diff changeset
1293 else
kono
parents: 67
diff changeset
1294 init_value_data (all_vd + bb->index);
kono
parents: 67
diff changeset
1295
kono
parents: 67
diff changeset
1296 copyprop_hardreg_forward_1 (bb, all_vd + bb->index);
kono
parents: 67
diff changeset
1297 }
kono
parents: 67
diff changeset
1298
kono
parents: 67
diff changeset
1299 if (MAY_HAVE_DEBUG_INSNS)
kono
parents: 67
diff changeset
1300 {
kono
parents: 67
diff changeset
1301 FOR_EACH_BB_FN (bb, fun)
kono
parents: 67
diff changeset
1302 if (bitmap_bit_p (visited, bb->index)
kono
parents: 67
diff changeset
1303 && all_vd[bb->index].n_debug_insn_changes)
kono
parents: 67
diff changeset
1304 {
kono
parents: 67
diff changeset
1305 unsigned int regno;
kono
parents: 67
diff changeset
1306 bitmap live;
kono
parents: 67
diff changeset
1307
kono
parents: 67
diff changeset
1308 if (!analyze_called)
kono
parents: 67
diff changeset
1309 {
kono
parents: 67
diff changeset
1310 df_analyze ();
kono
parents: 67
diff changeset
1311 analyze_called = true;
kono
parents: 67
diff changeset
1312 }
kono
parents: 67
diff changeset
1313 live = df_get_live_out (bb);
kono
parents: 67
diff changeset
1314 for (regno = 0; regno < FIRST_PSEUDO_REGISTER; regno++)
kono
parents: 67
diff changeset
1315 if (all_vd[bb->index].e[regno].debug_insn_changes)
kono
parents: 67
diff changeset
1316 {
kono
parents: 67
diff changeset
1317 if (REGNO_REG_SET_P (live, regno))
kono
parents: 67
diff changeset
1318 apply_debug_insn_changes (all_vd + bb->index, regno);
kono
parents: 67
diff changeset
1319 if (all_vd[bb->index].n_debug_insn_changes == 0)
kono
parents: 67
diff changeset
1320 break;
kono
parents: 67
diff changeset
1321 }
kono
parents: 67
diff changeset
1322 }
kono
parents: 67
diff changeset
1323
kono
parents: 67
diff changeset
1324 queued_debug_insn_change_pool.release ();
kono
parents: 67
diff changeset
1325 }
kono
parents: 67
diff changeset
1326
kono
parents: 67
diff changeset
1327 free (all_vd);
kono
parents: 67
diff changeset
1328 return 0;
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1329 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1330
111
kono
parents: 67
diff changeset
1331 } // anon namespace
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1332
111
kono
parents: 67
diff changeset
1333 rtl_opt_pass *
kono
parents: 67
diff changeset
1334 make_pass_cprop_hardreg (gcc::context *ctxt)
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1335 {
111
kono
parents: 67
diff changeset
1336 return new pass_cprop_hardreg (ctxt);
kono
parents: 67
diff changeset
1337 }