1 ; RUN: opt < %s -sample-profile -sample-profile-file=%S/Inputs/offset.prof | opt -analyze -branch-prob | FileCheck %s 2 ; RUN: opt < %s -passes=sample-profile -sample-profile-file=%S/Inputs/offset.prof | opt -analyze -branch-prob | FileCheck %s 3 4 ; Original C++ code for this test case: 5 ; 6 ; a.cc: 7 ; #1 8 ; #2 9 ; #3 10 ; #4 11 ; #5 int foo(int a) { 12 ; #6 #include "a.b" 13 ; #7} 14 ; 15 ; a.b: 16 ; #1 if (a > 0) { 17 ; #2 return 10; 18 ; #3 } else { 19 ; #4 return 20; 20 ; #5 } 21 22 ; Function Attrs: nounwind uwtable 23 define i32 @_Z3fooi(i32 %a) #0 !dbg !4 { 24 entry: 25 %retval = alloca i32, align 4 26 %a.addr = alloca i32, align 4 27 store i32 %a, i32* %a.addr, align 4 28 call void @llvm.dbg.declare(metadata i32* %a.addr, metadata !11, metadata !12), !dbg !13 29 %0 = load i32, i32* %a.addr, align 4, !dbg !14 30 %cmp = icmp sgt i32 %0, 0, !dbg !18 31 br i1 %cmp, label %if.then, label %if.else, !dbg !19 32 ; CHECK: edge entry -> if.then probability is 0x0147ae14 / 0x80000000 = 1.00% 33 ; CHECK: edge entry -> if.else probability is 0x7eb851ec / 0x80000000 = 99.00% [HOT edge] 34 35 if.then: ; preds = %entry 36 store i32 10, i32* %retval, align 4, !dbg !20 37 br label %return, !dbg !20 38 39 if.else: ; preds = %entry 40 store i32 20, i32* %retval, align 4, !dbg !22 41 br label %return, !dbg !22 42 43 return: ; preds = %if.else, %if.then 44 %1 = load i32, i32* %retval, align 4, !dbg !24 45 ret i32 %1, !dbg !24 46 } 47 48 ; Function Attrs: nounwind readnone 49 declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 50 51 attributes #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"="+fxsr,+mmx,+sse,+sse2" "unsafe-fp-math"="false" "use-soft-float"="false" } 52 attributes #1 = { nounwind readnone } 53 54 !llvm.dbg.cu = !{!0} 55 !llvm.module.flags = !{!8, !9} 56 !llvm.ident = !{!10} 57 58 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 3.8.0 (trunk 250750)", isOptimized: false, runtimeVersion: 0, emissionKind: NoDebug, enums: !2) 59 !1 = !DIFile(filename: "a.cc", directory: "/tmp") 60 !2 = !{} 61 !4 = distinct !DISubprogram(name: "foo", linkageName: "_Z3fooi", scope: !1, file: !1, line: 5, type: !5, isLocal: false, isDefinition: true, scopeLine: 5, flags: DIFlagPrototyped, isOptimized: false, unit: !0, variables: !2) 62 !5 = !DISubroutineType(types: !6) 63 !6 = !{!7, !7} 64 !7 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed) 65 !8 = !{i32 2, !"Dwarf Version", i32 4} 66 !9 = !{i32 2, !"Debug Info Version", i32 3} 67 !10 = !{!"clang version 3.8.0 (trunk 250750)"} 68 !11 = !DILocalVariable(name: "a", arg: 1, scope: !4, file: !1, line: 5, type: !7) 69 !12 = !DIExpression() 70 !13 = !DILocation(line: 5, column: 13, scope: !4) 71 !14 = !DILocation(line: 1, column: 5, scope: !15) 72 !15 = distinct !DILexicalBlock(scope: !17, file: !16, line: 1, column: 5) 73 !16 = !DIFile(filename: "./a.b", directory: "/tmp") 74 !17 = !DILexicalBlockFile(scope: !4, file: !16, discriminator: 0) 75 !18 = !DILocation(line: 1, column: 7, scope: !15) 76 !19 = !DILocation(line: 1, column: 5, scope: !17) 77 !20 = !DILocation(line: 2, column: 3, scope: !21) 78 !21 = distinct !DILexicalBlock(scope: !15, file: !16, line: 1, column: 12) 79 !22 = !DILocation(line: 4, column: 3, scope: !23) 80 !23 = distinct !DILexicalBlock(scope: !15, file: !16, line: 3, column: 8) 81 !24 = !DILocation(line: 7, column: 1, scope: !25) 82 !25 = !DILexicalBlockFile(scope: !4, file: !1, discriminator: 0) 83
