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annotate test/CodeGen/X86/coalescer-dce.ll @ 95:afa8332a0e37 LLVM3.8

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LLVM 3.8
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Tue, 13 Oct 2015 17:48:58 +0900
parents 60c9769439b8
children 3a76565eade5
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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83
60c9769439b8 LLVM 3.7
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents: 0
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1 ; RUN: llc < %s -verify-machineinstrs -disable-fp-elim -disable-machine-dce -verify-coalescing
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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2 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"
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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3 target triple = "x86_64-apple-macosx10.7.0"
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4
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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5 ; This test case has a sub-register join followed by a remat:
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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6 ;
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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7 ; 256L %vreg2<def> = COPY %vreg7:sub_32bit<kill>; GR32:%vreg2 GR64:%vreg7
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8 ; Considering merging %vreg2 with %vreg7:sub_32bit
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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9 ; Cross-class to GR64.
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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10 ; RHS = %vreg2 = [256d,272d:0) 0@256d
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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11 ; LHS = %vreg7 = [208d,256d:0)[304L,480L:0) 0@208d
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12 ; updated: 272L %vreg0<def> = COPY %vreg7:sub_32bit<kill>; GR32:%vreg0 GR64:%vreg7
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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13 ; Joined. Result = %vreg7 = [208d,272d:0)[304L,480L:0) 0@208d
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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14 ;
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15 ; 272L %vreg10:sub_32bit<def> = COPY %vreg7:sub_32bit<kill>, %vreg10<imp-def>; GR64:%vreg10,%vreg7
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16 ; Considering merging %vreg7 with %vreg10
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17 ; RHS = %vreg7 = [208d,272d:0)[304L,480L:0) 0@208d
95c75e76d11b LLVM 3.4
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18 ; LHS = %vreg10 = [16d,64L:2)[64L,160L:1)[192L,240L:1)[272d,304L:3)[304L,352d:1)[352d,400d:0)[400d,400S:4) 0@352d 1@64L-phidef 2@16d-phikill 3@272d-phikill 4@400d
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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19 ; Remat: %vreg10<def> = MOV64r0 %vreg10<imp-def>, %EFLAGS<imp-def,dead>, %vreg10<imp-def>; GR64:%vreg10
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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20 ; Shrink: %vreg7 = [208d,272d:0)[304L,480L:0) 0@208d
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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21 ; live-in at 240L
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22 ; live-in at 416L
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23 ; live-in at 320L
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24 ; live-in at 304L
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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25 ; Shrunk: %vreg7 = [208d,256d:0)[304L,480L:0) 0@208d
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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26 ;
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27 ; The COPY at 256L is rewritten as a partial def, and that would artificially
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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28 ; extend the live range of %vreg7 to end at 256d. When the joined copy is
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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29 ; removed, -verify-coalescing complains about the dangling kill.
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30 ;
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31 ; <rdar://problem/9967101>
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32
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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33 define void @f1() nounwind uwtable ssp {
95c75e76d11b LLVM 3.4
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34 bb:
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35 br label %bb1
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36
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37 bb1:
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38 %tmp = phi i32 [ 0, %bb ], [ %tmp21, %bb20 ]
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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39 br label %bb2
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40
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41 bb2:
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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42 br i1 undef, label %bb5, label %bb8
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43
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44 bb4:
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45 br i1 undef, label %bb2, label %bb20
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46
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47 bb5:
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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48 br i1 undef, label %bb4, label %bb20
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49
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50 bb8:
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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51 %tmp9 = phi i32 [ %tmp24, %bb23 ], [ 0, %bb2 ]
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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52 br i1 false, label %bb41, label %bb10
95c75e76d11b LLVM 3.4
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53
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54 bb10:
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55 %tmp11 = sub nsw i32 %tmp9, %tmp
95c75e76d11b LLVM 3.4
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56 br i1 false, label %bb2, label %bb26
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57
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58 bb20:
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59 %tmp21 = phi i32 [ undef, %bb4 ], [ undef, %bb5 ], [ %tmp9, %bb27 ], [ undef, %bb32 ]
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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60 %tmp22 = phi i32 [ undef, %bb4 ], [ undef, %bb5 ], [ %tmp11, %bb27 ], [ undef, %bb32 ]
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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61 br label %bb1
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62
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63 bb23:
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64 %tmp24 = add nsw i32 %tmp9, 1
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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65 br label %bb8
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66
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67 bb26:
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68 br i1 undef, label %bb27, label %bb32
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69
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70 bb27:
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71 %tmp28 = zext i32 %tmp11 to i64
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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72 %tmp30 = icmp eq i64 undef, %tmp28
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73 br i1 %tmp30, label %bb20, label %bb27
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74
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75 bb32:
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76 br i1 undef, label %bb20, label %bb23
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77
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78 bb41:
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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79 ret void
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80 }