Mercurial > hg > CbC > CbC_llvm

annotate test/Transforms/IndVarSimplify/elim-extend.ll @ 120:1172e4bd9c6f

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update 4.0.0
author mir3636
date Fri, 25 Nov 2016 19:14:25 +0900
parents afa8332a0e37
children c2174574ed3a
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
0
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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1 ; RUN: opt < %s -indvars -S | FileCheck %s
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2
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3 target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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4
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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5 ; IV with constant start, preinc and postinc sign extends, with and without NSW.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
6 ; IV rewrite only removes one sext. WidenIVs removes all three.
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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7 define void @postincConstIV(i8* %base, i32 %limit) nounwind {
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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8 entry:
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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9 br label %loop
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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10 ; CHECK: loop:
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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11 ; CHECK-NOT: sext
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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12 ; CHECK: exit:
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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13 loop:
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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14 %iv = phi i32 [ %postiv, %loop ], [ 0, %entry ]
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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15 %ivnsw = phi i32 [ %postivnsw, %loop ], [ 0, %entry ]
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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16 %preofs = sext i32 %iv to i64
95
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parents: 0
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17 %preadr = getelementptr i8, i8* %base, i64 %preofs
0
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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18 store i8 0, i8* %preadr
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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19 %postiv = add i32 %iv, 1
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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20 %postofs = sext i32 %postiv to i64
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21 %postadr = getelementptr i8, i8* %base, i64 %postofs
0
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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22 store i8 0, i8* %postadr
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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23 %postivnsw = add nsw i32 %ivnsw, 1
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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24 %postofsnsw = sext i32 %postivnsw to i64
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25 %postadrnsw = getelementptr inbounds i8, i8* %base, i64 %postofsnsw
0
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parents:
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26 store i8 0, i8* %postadrnsw
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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27 %cond = icmp sgt i32 %limit, %iv
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28 br i1 %cond, label %loop, label %exit
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29 exit:
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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30 br label %return
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31 return:
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32 ret void
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33 }
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34
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35 ; IV with nonconstant start, preinc and postinc sign extends,
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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36 ; with and without NSW.
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37 ; As with postincConstIV, WidenIVs removes all three sexts.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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38 define void @postincVarIV(i8* %base, i32 %init, i32 %limit) nounwind {
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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39 entry:
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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40 %precond = icmp sgt i32 %limit, %init
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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41 br i1 %precond, label %loop, label %return
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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42 ; CHECK: loop:
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43 ; CHECK-NOT: sext
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44 ; CHECK: wide.trip.count = sext
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45 ; CHECK-NOT: sext
0
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46 ; CHECK: exit:
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47 loop:
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parents:
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48 %iv = phi i32 [ %postiv, %loop ], [ %init, %entry ]
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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49 %ivnsw = phi i32 [ %postivnsw, %loop ], [ %init, %entry ]
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parents:
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50 %preofs = sext i32 %iv to i64
95
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51 %preadr = getelementptr i8, i8* %base, i64 %preofs
0
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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52 store i8 0, i8* %preadr
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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53 %postiv = add i32 %iv, 1
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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54 %postofs = sext i32 %postiv to i64
95
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55 %postadr = getelementptr i8, i8* %base, i64 %postofs
0
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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56 store i8 0, i8* %postadr
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57 %postivnsw = add nsw i32 %ivnsw, 1
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parents:
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58 %postofsnsw = sext i32 %postivnsw to i64
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59 %postadrnsw = getelementptr i8, i8* %base, i64 %postofsnsw
0
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parents:
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60 store i8 0, i8* %postadrnsw
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parents:
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61 %cond = icmp sgt i32 %limit, %postiv
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parents:
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62 br i1 %cond, label %loop, label %exit
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63 exit:
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64 br label %return
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65 return:
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66 ret void
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67 }
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68
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69 ; Test sign extend elimination in the inner and outer loop.
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parents:
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70 ; %outercount is straightforward to widen, besides being in an outer loop.
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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71 ; %innercount is currently blocked by lcssa, so is not widened.
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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72 ; %inneriv can be widened only after proving it has no signed-overflow
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73 ; based on the loop test.
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74 define void @nestedIV(i8* %address, i32 %limit) nounwind {
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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75 entry:
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76 %limitdec = add i32 %limit, -1
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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77 br label %outerloop
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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78
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79 ; CHECK: outerloop:
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80 ;
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81 ; Eliminate %ofs1 after widening outercount.
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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82 ; CHECK-NOT: sext
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83 ; CHECK: getelementptr
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84 ;
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85 ; IV rewriting hoists a gep into this block. We don't like that.
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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86 ; CHECK-NOT: getelementptr
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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87 outerloop:
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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88 %outercount = phi i32 [ %outerpostcount, %outermerge ], [ 0, %entry ]
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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89 %innercount = phi i32 [ %innercount.merge, %outermerge ], [ 0, %entry ]
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parents:
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90
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91 %outercountdec = add i32 %outercount, -1
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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92 %ofs1 = sext i32 %outercountdec to i64
95
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93 %adr1 = getelementptr i8, i8* %address, i64 %ofs1
0
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94 store i8 0, i8* %adr1
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95
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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96 br label %innerpreheader
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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97
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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98 innerpreheader:
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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99 %innerprecmp = icmp sgt i32 %limitdec, %innercount
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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100 br i1 %innerprecmp, label %innerloop, label %outermerge
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parents:
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101
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102 ; CHECK: innerloop:
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103 ;
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104 ; Eliminate %ofs2 after widening inneriv.
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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105 ; Eliminate %ofs3 after normalizing sext(innerpostiv)
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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106 ; CHECK-NOT: sext
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107 ; CHECK: getelementptr
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108 ;
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109 ; FIXME: We should check that indvars does not increase the number of
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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110 ; IVs in this loop. sext elimination plus LFTR currently results in 2 final
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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111 ; IVs. Waiting to remove LFTR.
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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112 innerloop:
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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113 %inneriv = phi i32 [ %innerpostiv, %innerloop ], [ %innercount, %innerpreheader ]
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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114 %innerpostiv = add i32 %inneriv, 1
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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115
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116 %ofs2 = sext i32 %inneriv to i64
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117 %adr2 = getelementptr i8, i8* %address, i64 %ofs2
0
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118 store i8 0, i8* %adr2
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119
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120 %ofs3 = sext i32 %innerpostiv to i64
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121 %adr3 = getelementptr i8, i8* %address, i64 %ofs3
0
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parents:
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122 store i8 0, i8* %adr3
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123
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124 %innercmp = icmp sgt i32 %limitdec, %innerpostiv
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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125 br i1 %innercmp, label %innerloop, label %innerexit
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
126
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
127 innerexit:
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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128 %innercount.lcssa = phi i32 [ %innerpostiv, %innerloop ]
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
129 br label %outermerge
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
130
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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131 ; CHECK: outermerge:
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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132 ;
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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133 ; Eliminate %ofs4 after widening outercount
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
134 ; CHECK-NOT: sext
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
135 ; CHECK: getelementptr
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
136 ;
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
137 ; TODO: Eliminate %ofs5 after removing lcssa
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
138 outermerge:
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
139 %innercount.merge = phi i32 [ %innercount.lcssa, %innerexit ], [ %innercount, %innerpreheader ]
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
140
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
141 %ofs4 = sext i32 %outercount to i64
95
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
142 %adr4 = getelementptr i8, i8* %address, i64 %ofs4
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
143 store i8 0, i8* %adr4
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
144
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
145 %ofs5 = sext i32 %innercount.merge to i64
95
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
146 %adr5 = getelementptr i8, i8* %address, i64 %ofs5
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
147 store i8 0, i8* %adr5
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
148
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
149 %outerpostcount = add i32 %outercount, 1
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
150 %tmp47 = icmp slt i32 %outerpostcount, %limit
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
151 br i1 %tmp47, label %outerloop, label %return
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
152
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
153 return:
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
154 ret void
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
155 }