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annotate test/Transforms/InstCombine/2011-09-03-Trampoline.ll @ 134:3a76565eade5 LLVM5.0.1

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update 5.0.1
author mir3636
date Sat, 17 Feb 2018 09:57:20 +0900
parents afa8332a0e37
children c2174574ed3a
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1 ; RUN: opt -instcombine -S < %s | FileCheck %s
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2
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3 declare void @llvm.init.trampoline(i8*, i8*, i8*)
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4 declare i8* @llvm.adjust.trampoline(i8*)
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5 declare i32 @f(i8 * nest, i32)
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6
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7 ; Most common case
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8 define i32 @test0(i32 %n) !dbg !4 {
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9 %alloca = alloca [10 x i8], align 16
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10 %gep = getelementptr [10 x i8], [10 x i8]* %alloca, i32 0, i32 0
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11 call void @llvm.init.trampoline(i8* %gep, i8* bitcast (i32 (i8*, i32)* @f to i8*),
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12 i8* null)
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13 %tramp = call i8* @llvm.adjust.trampoline(i8* %gep)
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14 %function = bitcast i8* %tramp to i32(i32)*
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15 %ret = call i32 %function(i32 %n), !dbg !10
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16 ret i32 %ret
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17
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18 ; CHECK: define i32 @test0(i32 %n) !dbg !4 {
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19 ; CHECK: %ret = call i32 @f(i8* nest null, i32 %n), !dbg !10
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20 }
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21
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22 define i32 @test1(i32 %n, i8* %trampmem) {
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23 call void @llvm.init.trampoline(i8* %trampmem,
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24 i8* bitcast (i32 (i8*, i32)* @f to i8*),
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25 i8* null)
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26 %tramp = call i8* @llvm.adjust.trampoline(i8* %trampmem)
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27 %function = bitcast i8* %tramp to i32(i32)*
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28 %ret = call i32 %function(i32 %n)
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29 ret i32 %ret
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30 ; CHECK: define i32 @test1(i32 %n, i8* %trampmem) {
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31 ; CHECK: %ret = call i32 @f(i8* nest null, i32 %n)
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32 }
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33
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34 define i32 @test2(i32 %n, i8* %trampmem) {
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35 %tramp = call i8* @llvm.adjust.trampoline(i8* %trampmem)
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36 %functiona = bitcast i8* %tramp to i32(i32)*
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37 %ret = call i32 %functiona(i32 %n)
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38 ret i32 %ret
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39 ; CHECK: define i32 @test2(i32 %n, i8* %trampmem) {
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40 ; CHECK: %ret = call i32 %functiona(i32 %n)
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41 }
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43 define i32 @test3(i32 %n, i8* %trampmem) {
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44 call void @llvm.init.trampoline(i8* %trampmem,
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45 i8* bitcast (i32 (i8*, i32)* @f to i8*),
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46 i8* null)
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47
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48 ; CHECK: define i32 @test3(i32 %n, i8* %trampmem) {
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49 ; CHECK: %ret0 = call i32 @f(i8* nest null, i32 %n)
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50 %tramp0 = call i8* @llvm.adjust.trampoline(i8* %trampmem)
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51 %function0 = bitcast i8* %tramp0 to i32(i32)*
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52 %ret0 = call i32 %function0(i32 %n)
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53
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54 ;; Not optimized since previous call could be writing.
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55 %tramp1 = call i8* @llvm.adjust.trampoline(i8* %trampmem)
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56 %function1 = bitcast i8* %tramp1 to i32(i32)*
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57 %ret1 = call i32 %function1(i32 %n)
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58 ; CHECK: %ret1 = call i32 %function1(i32 %n)
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59
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60 ret i32 %ret1
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61 }
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62
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63 define i32 @test4(i32 %n) {
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64 %alloca = alloca [10 x i8], align 16
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65 %gep = getelementptr [10 x i8], [10 x i8]* %alloca, i32 0, i32 0
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66 call void @llvm.init.trampoline(i8* %gep, i8* bitcast (i32 (i8*, i32)* @f to i8*),
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67 i8* null)
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68
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69 %tramp0 = call i8* @llvm.adjust.trampoline(i8* %gep)
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70 %function0 = bitcast i8* %tramp0 to i32(i32)*
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71 %ret0 = call i32 %function0(i32 %n)
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72
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73 %tramp1 = call i8* @llvm.adjust.trampoline(i8* %gep)
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74 %function1 = bitcast i8* %tramp0 to i32(i32)*
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75 %ret1 = call i32 %function1(i32 %n)
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76
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77 %tramp2 = call i8* @llvm.adjust.trampoline(i8* %gep)
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78 %function2 = bitcast i8* %tramp2 to i32(i32)*
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79 %ret2 = call i32 %function2(i32 %n)
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80
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81 ret i32 %ret2
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82
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83 ; CHECK: define i32 @test4(i32 %n) {
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84 ; CHECK: %ret0 = call i32 @f(i8* nest null, i32 %n)
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85 ; CHECK: %ret1 = call i32 @f(i8* nest null, i32 %n)
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86 ; CHECK: %ret2 = call i32 @f(i8* nest null, i32 %n)
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87 }
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88
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89 !llvm.dbg.cu = !{!0}
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90 !llvm.module.flags = !{!3}
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91
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92 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.0 (trunk 127710)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !2)
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93 !1 = !DIFile(filename: "string.h", directory: "Game")
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94 !2 = !{}
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95 !3 = !{i32 1, !"Debug Info Version", i32 3}
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96 !4 = distinct !DISubprogram(name: "passthru", scope: !1, file: !1, line: 79, type: !5, isLocal: true, isDefinition: true, scopeLine: 79, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, unit: !0, variables: !8)
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97 !5 = !DISubroutineType(types: !6)
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98 !6 = !{!7}
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99 !7 = !DIDerivedType(tag: DW_TAG_pointer_type, scope: !0, baseType: null, size: 64, align: 64)
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100 !8 = !{!9}
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101 !9 = !DILocalVariable(name: "a", arg: 1, scope: !4, file: !1, line: 78, type: !7)
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102 !10 = !DILocation(line: 78, column: 28, scope: !4)