1; RUN: opt < %s -passes=sample-profile -sample-profile-file=%S/Inputs/offset.prof | opt -passes='print<branch-prob>' -disable-output 2>&1 | FileCheck %s 2 3; Original C++ code for this test case: 4; 5; a.cc: 6; #1 7; #2 8; #3 9; #4 10; #5 int foo(int a) { 11; #6 #include "a.b" 12; #7} 13; 14; a.b: 15; #1 if (a > 0) { 16; #2 return 10; 17; #3 } else { 18; #4 return 20; 19; #5 } 20 21; Function Attrs: nounwind uwtable 22define i32 @_Z3fooi(i32 %a) #0 !dbg !4 { 23entry: 24 %retval = alloca i32, align 4 25 %a.addr = alloca i32, align 4 26 store i32 %a, ptr %a.addr, align 4 27 call void @llvm.dbg.declare(metadata ptr %a.addr, metadata !11, metadata !12), !dbg !13 28 %0 = load i32, ptr %a.addr, align 4, !dbg !14 29 %cmp = icmp sgt i32 %0, 0, !dbg !18 30 br i1 %cmp, label %if.then, label %if.else, !dbg !19 31; CHECK: edge %entry -> %if.then probability is 0x0167ba82 / 0x80000000 = 1.10% 32; CHECK: edge %entry -> %if.else probability is 0x7e98457e / 0x80000000 = 98.90% [HOT edge] 33 34if.then: ; preds = %entry 35 store i32 10, ptr %retval, align 4, !dbg !20 36 br label %return, !dbg !20 37 38if.else: ; preds = %entry 39 store i32 20, ptr %retval, align 4, !dbg !22 40 br label %return, !dbg !22 41 42return: ; preds = %if.else, %if.then 43 %1 = load i32, ptr %retval, align 4, !dbg !24 44 ret i32 %1, !dbg !24 45} 46 47; Function Attrs: nounwind readnone 48declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 49 50attributes #0 = { nounwind uwtable "disable-tail-calls"="false" "less-precise-fpmad"="false" "frame-pointer"="all" "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" "use-sample-profile" } 51attributes #1 = { nounwind readnone } 52 53!llvm.dbg.cu = !{!0} 54!llvm.module.flags = !{!8, !9} 55!llvm.ident = !{!10} 56 57!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) 58!1 = !DIFile(filename: "a.cc", directory: "/tmp") 59!2 = !{} 60!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, retainedNodes: !2) 61!5 = !DISubroutineType(types: !6) 62!6 = !{!7, !7} 63!7 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed) 64!8 = !{i32 2, !"Dwarf Version", i32 4} 65!9 = !{i32 2, !"Debug Info Version", i32 3} 66!10 = !{!"clang version 3.8.0 (trunk 250750)"} 67!11 = !DILocalVariable(name: "a", arg: 1, scope: !4, file: !1, line: 5, type: !7) 68!12 = !DIExpression() 69!13 = !DILocation(line: 5, column: 13, scope: !4) 70!14 = !DILocation(line: 1, column: 5, scope: !15) 71!15 = distinct !DILexicalBlock(scope: !17, file: !16, line: 1, column: 5) 72!16 = !DIFile(filename: "./a.b", directory: "/tmp") 73!17 = !DILexicalBlockFile(scope: !4, file: !16, discriminator: 0) 74!18 = !DILocation(line: 1, column: 7, scope: !15) 75!19 = !DILocation(line: 1, column: 5, scope: !17) 76!20 = !DILocation(line: 2, column: 3, scope: !21) 77!21 = distinct !DILexicalBlock(scope: !15, file: !16, line: 1, column: 12) 78!22 = !DILocation(line: 4, column: 3, scope: !23) 79!23 = distinct !DILexicalBlock(scope: !15, file: !16, line: 3, column: 8) 80!24 = !DILocation(line: 7, column: 1, scope: !25) 81!25 = !DILexicalBlockFile(scope: !4, file: !1, discriminator: 0) 82