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comparison gcc/config/crx/crx.c @ 67:f6334be47118

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update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
author nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
date Tue, 22 Mar 2011 17:18:12 +0900
parents b7f97abdc517
children
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65:65488c3d617d 67:f6334be47118
1 /* Output routines for GCC for CRX. 1 /* Output routines for GCC for CRX.
2 Copyright (C) 1991, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2 Copyright (C) 1991, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
3 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 3 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
4 Free Software Foundation, Inc. 4 Free Software Foundation, Inc.
5 5
6 This file is part of GCC. 6 This file is part of GCC.
7 7
8 GCC is free software; you can redistribute it and/or modify it 8 GCC is free software; you can redistribute it and/or modify it
41 #include "except.h" 41 #include "except.h"
42 #include "function.h" 42 #include "function.h"
43 #include "recog.h" 43 #include "recog.h"
44 #include "expr.h" 44 #include "expr.h"
45 #include "optabs.h" 45 #include "optabs.h"
46 #include "toplev.h" 46 #include "diagnostic-core.h"
47 #include "basic-block.h" 47 #include "basic-block.h"
48 #include "df.h" 48 #include "df.h"
49 #include "target.h" 49 #include "target.h"
50 #include "target-def.h" 50 #include "target-def.h"
51 51
127 int incoming ATTRIBUTE_UNUSED); 127 int incoming ATTRIBUTE_UNUSED);
128 static bool crx_return_in_memory (const_tree type, const_tree fntype ATTRIBUTE_UNUSED); 128 static bool crx_return_in_memory (const_tree type, const_tree fntype ATTRIBUTE_UNUSED);
129 static int crx_address_cost (rtx, bool); 129 static int crx_address_cost (rtx, bool);
130 static bool crx_legitimate_address_p (enum machine_mode, rtx, bool); 130 static bool crx_legitimate_address_p (enum machine_mode, rtx, bool);
131 static bool crx_can_eliminate (const int, const int); 131 static bool crx_can_eliminate (const int, const int);
132 static rtx crx_function_arg (CUMULATIVE_ARGS *, enum machine_mode,
133 const_tree, bool);
134 static void crx_function_arg_advance (CUMULATIVE_ARGS *, enum machine_mode,
135 const_tree, bool);
132 136
133 /*****************************************************************************/ 137 /*****************************************************************************/
134 /* RTL VALIDITY */ 138 /* RTL VALIDITY */
135 /*****************************************************************************/ 139 /*****************************************************************************/
136 140
150 #undef TARGET_STRUCT_VALUE_RTX 154 #undef TARGET_STRUCT_VALUE_RTX
151 #define TARGET_STRUCT_VALUE_RTX crx_struct_value_rtx 155 #define TARGET_STRUCT_VALUE_RTX crx_struct_value_rtx
152 156
153 #undef TARGET_RETURN_IN_MEMORY 157 #undef TARGET_RETURN_IN_MEMORY
154 #define TARGET_RETURN_IN_MEMORY crx_return_in_memory 158 #define TARGET_RETURN_IN_MEMORY crx_return_in_memory
159
160 /*****************************************************************************/
161 /* PASSING FUNCTION ARGUMENTS */
162 /*****************************************************************************/
163
164 #undef TARGET_FUNCTION_ARG
165 #define TARGET_FUNCTION_ARG crx_function_arg
166
167 #undef TARGET_FUNCTION_ARG_ADVANCE
168 #define TARGET_FUNCTION_ARG_ADVANCE crx_function_arg_advance
155 169
156 /*****************************************************************************/ 170 /*****************************************************************************/
157 /* RELATIVE COSTS OF OPERATIONS */ 171 /* RELATIVE COSTS OF OPERATIONS */
158 /*****************************************************************************/ 172 /*****************************************************************************/
159 173
171 /* ISRs have special prologue and epilogue requirements. */ 185 /* ISRs have special prologue and epilogue requirements. */
172 {"interrupt", 0, 0, false, true, true, NULL}, 186 {"interrupt", 0, 0, false, true, true, NULL},
173 {NULL, 0, 0, false, false, false, NULL} 187 {NULL, 0, 0, false, false, false, NULL}
174 }; 188 };
175 189
190 /* Option handling. */
191
192 #undef TARGET_OPTION_OPTIMIZATION_TABLE
193 #define TARGET_OPTION_OPTIMIZATION_TABLE crx_option_optimization_table
194
195 static const struct default_options crx_option_optimization_table[] =
196 {
197 /* Put each function in its own section so that PAGE-instruction
198 relaxation can do its best. */
199 { OPT_LEVELS_1_PLUS, OPT_ffunction_sections, NULL, 1 },
200 { OPT_LEVELS_1_PLUS, OPT_fomit_frame_pointer, NULL, 1 },
201 { OPT_LEVELS_NONE, 0, NULL, 0 }
202 };
176 203
177 /* Initialize 'targetm' variable which contains pointers to functions and data 204 /* Initialize 'targetm' variable which contains pointers to functions and data
178 * relating to the target machine. */ 205 * relating to the target machine. */
179 206
180 struct gcc_target targetm = TARGET_INITIALIZER; 207 struct gcc_target targetm = TARGET_INITIALIZER;
413 440
414 /* If enough param regs are available for passing the param of type TYPE return 441 /* If enough param regs are available for passing the param of type TYPE return
415 * the number of registers needed else 0. */ 442 * the number of registers needed else 0. */
416 443
417 static int 444 static int
418 enough_regs_for_param (CUMULATIVE_ARGS * cum, tree type, 445 enough_regs_for_param (CUMULATIVE_ARGS * cum, const_tree type,
419 enum machine_mode mode) 446 enum machine_mode mode)
420 { 447 {
421 int type_size; 448 int type_size;
422 int remaining_size; 449 int remaining_size;
423 450
436 return (type_size + BITS_PER_WORD - 1) / BITS_PER_WORD; 463 return (type_size + BITS_PER_WORD - 1) / BITS_PER_WORD;
437 464
438 return 0; 465 return 0;
439 } 466 }
440 467
441 /* Implements the macro FUNCTION_ARG defined in crx.h. */ 468 /* Implements TARGET_FUNCTION_ARG. */
442 469
443 rtx 470 static rtx
444 crx_function_arg (CUMULATIVE_ARGS * cum, enum machine_mode mode, tree type, 471 crx_function_arg (CUMULATIVE_ARGS * cum, enum machine_mode mode,
445 int named ATTRIBUTE_UNUSED) 472 const_tree type, bool named ATTRIBUTE_UNUSED)
446 { 473 {
447 last_parm_in_reg = 0; 474 last_parm_in_reg = 0;
448 475
449 /* Function_arg () is called with this type just after all the args have had 476 /* Function_arg () is called with this type just after all the args have had
450 * their registers assigned. The rtx that function_arg returns from this type 477 * their registers assigned. The rtx that function_arg returns from this type
504 return; 531 return;
505 } 532 }
506 } 533 }
507 } 534 }
508 535
509 /* Implements the macro FUNCTION_ARG_ADVANCE defined in crx.h. */ 536 /* Implements TARGET_FUNCTION_ARG_ADVANCE. */
510 537
511 void 538 static void
512 crx_function_arg_advance (CUMULATIVE_ARGS * cum, enum machine_mode mode, 539 crx_function_arg_advance (CUMULATIVE_ARGS * cum, enum machine_mode mode,
513 tree type, int named ATTRIBUTE_UNUSED) 540 const_tree type, bool named ATTRIBUTE_UNUSED)
514 { 541 {
515 /* l holds the number of registers required */ 542 /* l holds the number of registers required */
516 int l = GET_MODE_BITSIZE (mode) / BITS_PER_WORD; 543 int l = GET_MODE_BITSIZE (mode) / BITS_PER_WORD;
517 544
518 /* If the parameter isn't passed on a register don't advance cum. */ 545 /* If the parameter isn't passed on a register don't advance cum. */
560 * Post modify --> reg + 12-bit disp. 587 * Post modify --> reg + 12-bit disp.
561 * Register relative --> reg | 32-bit disp. + reg | 4 bit + reg 588 * Register relative --> reg | 32-bit disp. + reg | 4 bit + reg
562 * Scaled index --> reg + reg | 22-bit disp. + reg + reg | 589 * Scaled index --> reg + reg | 22-bit disp. + reg + reg |
563 * 22-disp. + reg + reg + (2 | 4 | 8) */ 590 * 22-disp. + reg + reg + (2 | 4 | 8) */
564 591
565 static int crx_addr_reg_p (rtx addr_reg) 592 static rtx
566 { 593 crx_addr_reg (rtx addr_reg)
567 rtx reg; 594 {
595 if (GET_MODE (addr_reg) != Pmode)
596 return NULL_RTX;
568 597
569 if (REG_P (addr_reg)) 598 if (REG_P (addr_reg))
570 { 599 return addr_reg;
571 reg = addr_reg; 600 else if (GET_CODE (addr_reg) == SUBREG
572 }
573 else if ((GET_CODE (addr_reg) == SUBREG
574 && REG_P (SUBREG_REG (addr_reg)) 601 && REG_P (SUBREG_REG (addr_reg))
575 && GET_MODE_SIZE (GET_MODE (SUBREG_REG (addr_reg))) 602 && (GET_MODE_SIZE (GET_MODE (SUBREG_REG (addr_reg)))
576 <= UNITS_PER_WORD)) 603 <= UNITS_PER_WORD))
577 { 604 return SUBREG_REG (addr_reg);
578 reg = SUBREG_REG (addr_reg);
579 }
580 else 605 else
581 return FALSE; 606 return NULL_RTX;
582
583 if (GET_MODE (addr_reg) != Pmode)
584 {
585 return FALSE;
586 }
587
588 return TRUE;
589 } 607 }
590 608
591 enum crx_addrtype 609 enum crx_addrtype
592 crx_decompose_address (rtx addr, struct crx_address *out) 610 crx_decompose_address (rtx addr, struct crx_address *out)
593 { 611 {
722 740
723 default: 741 default:
724 return CRX_INVALID; 742 return CRX_INVALID;
725 } 743 }
726 744
727 if (base && !crx_addr_reg_p (base)) return CRX_INVALID; 745 if (base)
728 if (index && !crx_addr_reg_p (index)) return CRX_INVALID; 746 {
747 base = crx_addr_reg (base);
748 if (!base)
749 return CRX_INVALID;
750 }
751 if (index)
752 {
753 index = crx_addr_reg (index);
754 if (!index)
755 return CRX_INVALID;
756 }
729 757
730 out->base = base; 758 out->base = base;
731 out->index = index; 759 out->index = index;
732 out->disp = disp; 760 out->disp = disp;
733 out->scale = scale; 761 out->scale = scale;
1409 * registers we save. - Generate the appropriate return insn. */ 1437 * registers we save. - Generate the appropriate return insn. */
1410 1438
1411 void 1439 void
1412 crx_expand_epilogue (void) 1440 crx_expand_epilogue (void)
1413 { 1441 {
1414 rtx return_reg;
1415
1416 /* Nonzero if we need to return and pop only RA. This will generate a 1442 /* Nonzero if we need to return and pop only RA. This will generate a
1417 * different insn. This differentiate is for the peepholes for call as last 1443 * different insn. This differentiate is for the peepholes for call as last
1418 * statement in function. */ 1444 * statement in function. */
1419 int only_popret_RA = (save_regs[RETURN_ADDRESS_REGNUM] 1445 int only_popret_RA = (save_regs[RETURN_ADDRESS_REGNUM]
1420 && (sum_regs == UNITS_PER_WORD)); 1446 && (sum_regs == UNITS_PER_WORD));
1421
1422 /* Return register. */
1423 return_reg = gen_rtx_REG (Pmode, RETURN_ADDRESS_REGNUM);
1424 1447
1425 if (frame_pointer_needed) 1448 if (frame_pointer_needed)
1426 /* Restore the stack pointer with the frame pointers value */ 1449 /* Restore the stack pointer with the frame pointers value */
1427 emit_move_insn (stack_pointer_rtx, frame_pointer_rtx); 1450 emit_move_insn (stack_pointer_rtx, frame_pointer_rtx);
1428 1451