1; RUN: opt < %s -sample-profile -sample-profile-file=%S/Inputs/gcc-simple.afdo -S | FileCheck %s 2; XFAIL: powerpc64-, s390x, mips-, mips64-, sparc 3; Original code: 4; 5; #include <stdlib.h> 6; 7; long long int foo(long i) { 8; if (rand() < 500) return 2; else if (rand() > 5000) return 10; else return 90; 9; } 10; 11; int main() { 12; long long int sum = 0; 13; for (int k = 0; k < 3000; k++) 14; for (int i = 0; i < 200000; i++) sum += foo(i); 15; return sum > 0 ? 0 : 1; 16; } 17; 18; This test was compiled down to bytecode at -O0 to avoid inlining foo() into 19; main(). The profile was generated using a GCC-generated binary (also compiled 20; at -O0). The conversion from the Linux Perf profile to the GCC autofdo 21; profile used the converter at https://github.com/google/autofdo 22; 23; $ gcc -g -O0 gcc-simple.cc -o gcc-simple 24; $ perf record -b ./gcc-simple 25; $ create_gcov --binary=gcc-simple --gcov=gcc-simple.afdo 26 27define i64 @_Z3fool(i64 %i) #0 !dbg !4 { 28; CHECK: !prof ![[EC1:[0-9]+]] 29entry: 30 %retval = alloca i64, align 8 31 %i.addr = alloca i64, align 8 32 store i64 %i, i64* %i.addr, align 8 33 call void @llvm.dbg.declare(metadata i64* %i.addr, metadata !16, metadata !17), !dbg !18 34 %call = call i32 @rand() #3, !dbg !19 35 %cmp = icmp slt i32 %call, 500, !dbg !21 36 br i1 %cmp, label %if.then, label %if.else, !dbg !22 37; CHECK: !prof ![[PROF1:[0-9]+]] 38 39if.then: ; preds = %entry 40 store i64 2, i64* %retval, align 8, !dbg !23 41 br label %return, !dbg !23 42 43if.else: ; preds = %entry 44 %call1 = call i32 @rand() #3, !dbg !25 45 %cmp2 = icmp sgt i32 %call1, 5000, !dbg !28 46 br i1 %cmp2, label %if.then.3, label %if.else.4, !dbg !29 47; CHECK: !prof ![[PROF2:[0-9]+]] 48 49if.then.3: ; preds = %if.else 50 store i64 10, i64* %retval, align 8, !dbg !30 51 br label %return, !dbg !30 52 53if.else.4: ; preds = %if.else 54 store i64 90, i64* %retval, align 8, !dbg !32 55 br label %return, !dbg !32 56 57return: ; preds = %if.else.4, %if.then.3, %if.then 58 %0 = load i64, i64* %retval, align 8, !dbg !34 59 ret i64 %0, !dbg !34 60} 61 62; Function Attrs: nounwind readnone 63declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 64 65; Function Attrs: nounwind 66declare i32 @rand() #2 67 68; Function Attrs: nounwind uwtable 69define i32 @main() #0 !dbg !9 { 70; CHECK: !prof ![[EC2:[0-9]+]] 71entry: 72 %retval = alloca i32, align 4 73 %sum = alloca i64, align 8 74 %k = alloca i32, align 4 75 %i = alloca i32, align 4 76 store i32 0, i32* %retval, align 4 77 call void @llvm.dbg.declare(metadata i64* %sum, metadata !35, metadata !17), !dbg !36 78 store i64 0, i64* %sum, align 8, !dbg !36 79 call void @llvm.dbg.declare(metadata i32* %k, metadata !37, metadata !17), !dbg !39 80 store i32 0, i32* %k, align 4, !dbg !39 81 br label %for.cond, !dbg !40 82 83for.cond: ; preds = %for.inc.4, %entry 84 %0 = load i32, i32* %k, align 4, !dbg !41 85 %cmp = icmp slt i32 %0, 3000, !dbg !45 86 br i1 %cmp, label %for.body, label %for.end.6, !dbg !46 87; CHECK: !prof ![[PROF3:[0-9]+]] 88 89for.body: ; preds = %for.cond 90 call void @llvm.dbg.declare(metadata i32* %i, metadata !47, metadata !17), !dbg !49 91 store i32 0, i32* %i, align 4, !dbg !49 92 br label %for.cond.1, !dbg !50 93 94for.cond.1: ; preds = %for.inc, %for.body 95 %1 = load i32, i32* %i, align 4, !dbg !51 96 %cmp2 = icmp slt i32 %1, 200000, !dbg !55 97 br i1 %cmp2, label %for.body.3, label %for.end, !dbg !56 98; CHECK: !prof ![[PROF4:[0-9]+]] 99 100for.body.3: ; preds = %for.cond.1 101 %2 = load i32, i32* %i, align 4, !dbg !57 102 %conv = sext i32 %2 to i64, !dbg !57 103 %call = call i64 @_Z3fool(i64 %conv), !dbg !59 104 %3 = load i64, i64* %sum, align 8, !dbg !60 105 %add = add nsw i64 %3, %call, !dbg !60 106 store i64 %add, i64* %sum, align 8, !dbg !60 107 br label %for.inc, !dbg !61 108 109for.inc: ; preds = %for.body.3 110 %4 = load i32, i32* %i, align 4, !dbg !62 111 %inc = add nsw i32 %4, 1, !dbg !62 112 store i32 %inc, i32* %i, align 4, !dbg !62 113 br label %for.cond.1, !dbg !64 114 115for.end: ; preds = %for.cond.1 116 br label %for.inc.4, !dbg !65 117 118for.inc.4: ; preds = %for.end 119 %5 = load i32, i32* %k, align 4, !dbg !67 120 %inc5 = add nsw i32 %5, 1, !dbg !67 121 store i32 %inc5, i32* %k, align 4, !dbg !67 122 br label %for.cond, !dbg !68 123 124for.end.6: ; preds = %for.cond 125 %6 = load i64, i64* %sum, align 8, !dbg !69 126 %cmp7 = icmp sgt i64 %6, 0, !dbg !70 127 %cond = select i1 %cmp7, i32 0, i32 1, !dbg !69 128 ret i32 %cond, !dbg !71 129} 130 131; CHECK ![[EC1]] = !{!"function_entry_count", i64 24108} 132; CHECK ![[PROF1]] = !{!"branch_weights", i32 1, i32 30124} 133; CHECK ![[PROF2]] = !{!"branch_weights", i32 30177, i32 29579} 134; CHECK ![[EC2]] = !{!"function_entry_count", i64 0} 135; CHECK ![[PROF3]] = !{!"branch_weights", i32 1, i32 1} 136; CHECK ![[PROF4]] = !{!"branch_weights", i32 1, i32 20238} 137 138attributes #0 = { nounwind uwtable "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+sse,+sse2" "unsafe-fp-math"="false" "use-soft-float"="false" } 139attributes #1 = { nounwind readnone } 140attributes #2 = { nounwind "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+sse,+sse2" "unsafe-fp-math"="false" "use-soft-float"="false" } 141attributes #3 = { nounwind } 142 143!llvm.dbg.cu = !{!0} 144!llvm.module.flags = !{!13, !14} 145!llvm.ident = !{!15} 146 147!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 3.8.0 (trunk 247554) (llvm/trunk 247557)", isOptimized: false, runtimeVersion: 0, emissionKind: 1, enums: !2, subprograms: !3) 148!1 = !DIFile(filename: "discriminator.cc", directory: "/usr/local/google/home/dnovillo/llvm/test/autofdo") 149!2 = !{} 150!3 = !{!4, !9} 151!4 = distinct !DISubprogram(name: "foo", linkageName: "_Z3fool", scope: !1, file: !1, line: 3, type: !5, isLocal: false, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: false, variables: !2) 152!5 = !DISubroutineType(types: !6) 153!6 = !{!7, !8} 154!7 = !DIBasicType(name: "long long int", size: 64, align: 64, encoding: DW_ATE_signed) 155!8 = !DIBasicType(name: "long int", size: 64, align: 64, encoding: DW_ATE_signed) 156!9 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 7, type: !10, isLocal: false, isDefinition: true, scopeLine: 7, flags: DIFlagPrototyped, isOptimized: false, variables: !2) 157!10 = !DISubroutineType(types: !11) 158!11 = !{!12} 159!12 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed) 160!13 = !{i32 2, !"Dwarf Version", i32 4} 161!14 = !{i32 2, !"Debug Info Version", i32 3} 162!15 = !{!"clang version 3.8.0 (trunk 247554) (llvm/trunk 247557)"} 163!16 = !DILocalVariable(name: "i", arg: 1, scope: !4, file: !1, line: 3, type: !8) 164!17 = !DIExpression() 165!18 = !DILocation(line: 3, column: 24, scope: !4) 166!19 = !DILocation(line: 4, column: 7, scope: !20) 167!20 = distinct !DILexicalBlock(scope: !4, file: !1, line: 4, column: 7) 168!21 = !DILocation(line: 4, column: 14, scope: !20) 169!22 = !DILocation(line: 4, column: 7, scope: !4) 170!23 = !DILocation(line: 4, column: 21, scope: !24) 171!24 = !DILexicalBlockFile(scope: !20, file: !1, discriminator: 1) 172!25 = !DILocation(line: 4, column: 40, scope: !26) 173!26 = !DILexicalBlockFile(scope: !27, file: !1, discriminator: 2) 174!27 = distinct !DILexicalBlock(scope: !20, file: !1, line: 4, column: 40) 175!28 = !DILocation(line: 4, column: 47, scope: !27) 176!29 = !DILocation(line: 4, column: 40, scope: !20) 177!30 = !DILocation(line: 4, column: 55, scope: !31) 178!31 = !DILexicalBlockFile(scope: !27, file: !1, discriminator: 3) 179!32 = !DILocation(line: 4, column: 71, scope: !33) 180!33 = !DILexicalBlockFile(scope: !27, file: !1, discriminator: 4) 181!34 = !DILocation(line: 5, column: 1, scope: !4) 182!35 = !DILocalVariable(name: "sum", scope: !9, file: !1, line: 8, type: !7) 183!36 = !DILocation(line: 8, column: 17, scope: !9) 184!37 = !DILocalVariable(name: "k", scope: !38, file: !1, line: 9, type: !12) 185!38 = distinct !DILexicalBlock(scope: !9, file: !1, line: 9, column: 3) 186!39 = !DILocation(line: 9, column: 12, scope: !38) 187!40 = !DILocation(line: 9, column: 8, scope: !38) 188!41 = !DILocation(line: 9, column: 19, scope: !42) 189!42 = !DILexicalBlockFile(scope: !43, file: !1, discriminator: 2) 190!43 = !DILexicalBlockFile(scope: !44, file: !1, discriminator: 1) 191!44 = distinct !DILexicalBlock(scope: !38, file: !1, line: 9, column: 3) 192!45 = !DILocation(line: 9, column: 21, scope: !44) 193!46 = !DILocation(line: 9, column: 3, scope: !38) 194!47 = !DILocalVariable(name: "i", scope: !48, file: !1, line: 10, type: !12) 195!48 = distinct !DILexicalBlock(scope: !44, file: !1, line: 10, column: 5) 196!49 = !DILocation(line: 10, column: 14, scope: !48) 197!50 = !DILocation(line: 10, column: 10, scope: !48) 198!51 = !DILocation(line: 10, column: 21, scope: !52) 199!52 = !DILexicalBlockFile(scope: !53, file: !1, discriminator: 5) 200!53 = !DILexicalBlockFile(scope: !54, file: !1, discriminator: 1) 201!54 = distinct !DILexicalBlock(scope: !48, file: !1, line: 10, column: 5) 202!55 = !DILocation(line: 10, column: 23, scope: !54) 203!56 = !DILocation(line: 10, column: 5, scope: !48) 204!57 = !DILocation(line: 10, column: 49, scope: !58) 205!58 = !DILexicalBlockFile(scope: !54, file: !1, discriminator: 2) 206!59 = !DILocation(line: 10, column: 45, scope: !54) 207!60 = !DILocation(line: 10, column: 42, scope: !54) 208!61 = !DILocation(line: 10, column: 38, scope: !54) 209!62 = !DILocation(line: 10, column: 34, scope: !63) 210!63 = !DILexicalBlockFile(scope: !54, file: !1, discriminator: 4) 211!64 = !DILocation(line: 10, column: 5, scope: !54) 212!65 = !DILocation(line: 10, column: 50, scope: !66) 213!66 = !DILexicalBlockFile(scope: !48, file: !1, discriminator: 3) 214!67 = !DILocation(line: 9, column: 30, scope: !44) 215!68 = !DILocation(line: 9, column: 3, scope: !44) 216!69 = !DILocation(line: 11, column: 10, scope: !9) 217!70 = !DILocation(line: 11, column: 14, scope: !9) 218!71 = !DILocation(line: 11, column: 3, scope: !9) 219