| ; RUN: opt < %s -passes=sample-profile -sample-profile-file=%S/Inputs/offset.prof | opt -passes='print<branch-prob>' -disable-output 2>&1 | FileCheck %s |
| |
| ; Original C++ code for this test case: |
| ; |
| ; a.cc: |
| ; #1 |
| ; #2 |
| ; #3 |
| ; #4 |
| ; #5 int foo(int a) { |
| ; #6 #include "a.b" |
| ; #7} |
| ; |
| ; a.b: |
| ; #1 if (a > 0) { |
| ; #2 return 10; |
| ; #3 } else { |
| ; #4 return 20; |
| ; #5 } |
| |
| ; Function Attrs: nounwind uwtable |
| define i32 @_Z3fooi(i32 %a) #0 !dbg !4 { |
| entry: |
| %retval = alloca i32, align 4 |
| %a.addr = alloca i32, align 4 |
| store i32 %a, ptr %a.addr, align 4 |
| call void @llvm.dbg.declare(metadata ptr %a.addr, metadata !11, metadata !12), !dbg !13 |
| %0 = load i32, ptr %a.addr, align 4, !dbg !14 |
| %cmp = icmp sgt i32 %0, 0, !dbg !18 |
| br i1 %cmp, label %if.then, label %if.else, !dbg !19 |
| ; CHECK: edge entry -> if.then probability is 0x0167ba82 / 0x80000000 = 1.10% |
| ; CHECK: edge entry -> if.else probability is 0x7e98457e / 0x80000000 = 98.90% [HOT edge] |
| |
| if.then: ; preds = %entry |
| store i32 10, ptr %retval, align 4, !dbg !20 |
| br label %return, !dbg !20 |
| |
| if.else: ; preds = %entry |
| store i32 20, ptr %retval, align 4, !dbg !22 |
| br label %return, !dbg !22 |
| |
| return: ; preds = %if.else, %if.then |
| %1 = load i32, ptr %retval, align 4, !dbg !24 |
| ret i32 %1, !dbg !24 |
| } |
| |
| ; Function Attrs: nounwind readnone |
| declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 |
| |
| attributes #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" } |
| attributes #1 = { nounwind readnone } |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!8, !9} |
| !llvm.ident = !{!10} |
| |
| !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) |
| !1 = !DIFile(filename: "a.cc", directory: "/tmp") |
| !2 = !{} |
| !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) |
| !5 = !DISubroutineType(types: !6) |
| !6 = !{!7, !7} |
| !7 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed) |
| !8 = !{i32 2, !"Dwarf Version", i32 4} |
| !9 = !{i32 2, !"Debug Info Version", i32 3} |
| !10 = !{!"clang version 3.8.0 (trunk 250750)"} |
| !11 = !DILocalVariable(name: "a", arg: 1, scope: !4, file: !1, line: 5, type: !7) |
| !12 = !DIExpression() |
| !13 = !DILocation(line: 5, column: 13, scope: !4) |
| !14 = !DILocation(line: 1, column: 5, scope: !15) |
| !15 = distinct !DILexicalBlock(scope: !17, file: !16, line: 1, column: 5) |
| !16 = !DIFile(filename: "./a.b", directory: "/tmp") |
| !17 = !DILexicalBlockFile(scope: !4, file: !16, discriminator: 0) |
| !18 = !DILocation(line: 1, column: 7, scope: !15) |
| !19 = !DILocation(line: 1, column: 5, scope: !17) |
| !20 = !DILocation(line: 2, column: 3, scope: !21) |
| !21 = distinct !DILexicalBlock(scope: !15, file: !16, line: 1, column: 12) |
| !22 = !DILocation(line: 4, column: 3, scope: !23) |
| !23 = distinct !DILexicalBlock(scope: !15, file: !16, line: 3, column: 8) |
| !24 = !DILocation(line: 7, column: 1, scope: !25) |
| !25 = !DILexicalBlockFile(scope: !4, file: !1, discriminator: 0) |