65 lines
2.5 KiB
LLVM
65 lines
2.5 KiB
LLVM
; RUN: opt %s -passes=sample-profile -sample-profile-file=%S/Inputs/remap.prof -sample-profile-remapping-file=%S/Inputs/remap.map | opt -analyze -branch-prob | FileCheck %s
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;
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; Check whether profile remapping work with loading profile on demand used by extbinary format profile.
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; RUN: llvm-profdata merge -sample -extbinary %S/Inputs/remap.prof -o %t.extbinary.afdo
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; RUN: opt %s -passes=sample-profile -sample-profile-file=%t.extbinary.afdo -sample-profile-remapping-file=%S/Inputs/remap.map | opt -analyze -branch-prob | FileCheck %s
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;
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; Reduced from branch.ll
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declare i1 @foo()
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define void @_ZN3foo3barERKN1M1XINS_6detail3quxEEE() !dbg !2 {
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; CHECK: Printing analysis 'Branch Probability Analysis' for function '_ZN3foo3barERKN1M1XINS_6detail3quxEEE':
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entry:
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%cmp = call i1 @foo(), !dbg !6
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br i1 %cmp, label %if.then, label %if.end
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; CHECK: edge entry -> if.then probability is 0x4ccf6b16 / 0x80000000 = 60.01%
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; CHECK: edge entry -> if.end probability is 0x333094ea / 0x80000000 = 39.99%
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if.then:
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br label %return
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if.end:
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%cmp1 = call i1 @foo(), !dbg !7
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br i1 %cmp1, label %if.then.2, label %if.else
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; CHECK: edge if.end -> if.then.2 probability is 0x6652c748 / 0x80000000 = 79.94%
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; CHECK: edge if.end -> if.else probability is 0x19ad38b8 / 0x80000000 = 20.06%
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if.then.2:
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call i1 @foo(), !dbg !8
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br label %for.cond
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for.cond:
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%cmp5 = call i1 @foo()
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br i1 %cmp5, label %for.body, label %for.end, !prof !9
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; CHECK: edge for.cond -> for.body probability is 0x73333333 / 0x80000000 = 90.00%
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; CHECK: edge for.cond -> for.end probability is 0x0ccccccd / 0x80000000 = 10.00%
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for.body:
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br label %for.cond
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for.end:
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br label %return
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if.else:
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br label %return
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return:
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ret void
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}
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!4, !5}
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!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "foo++", isOptimized: false, runtimeVersion: 0, emissionKind: NoDebug, enums: !{}, retainedTypes: !{})
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!1 = !DIFile(filename: "test.cc", directory: "/foo/bar")
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!2 = distinct !DISubprogram(name: "_ZN3foo3barERKN1M1XINS_6detail3quxEEE", scope: !1, file: !1, line: 4, type: !3, isLocal: false, isDefinition: true, scopeLine: 4, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !{})
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!3 = !DISubroutineType(types: !{})
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!4 = !{i32 2, !"Dwarf Version", i32 4}
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!5 = !{i32 2, !"Debug Info Version", i32 3}
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!6 = !DILocation(line: 5, column: 8, scope: !2)
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!7 = !DILocation(line: 8, column: 6, scope: !2)
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!8 = !DILocation(line: 10, column: 11, scope: !2)
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!9 = !{!"branch_weights", i32 90, i32 10}
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