86 lines
3.7 KiB
LLVM
86 lines
3.7 KiB
LLVM
; Ensure MisExpect does not crash when given branches with zero weights
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; RUN: opt < %s -passes="sample-profile" -sample-profile-file=%S/Inputs/misexpect.prof -pgo-warn-misexpect -S 2>&1 | FileCheck %s
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define i32 @main() #0 !dbg !36 {
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; CHECK-LABEL: @main(
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; CHECK-NEXT: for.cond:
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; CHECK-NEXT: %0 = load i32, ptr null, align 4, !dbg !44
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; CHECK-NEXT: br i1 false, label %for.body, label %for.end, !prof !49
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; CHECK: for.body:
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; CHECK-NEXT: ret i32 0
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; CHECK: for.end:
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; CHECK-NEXT: ret i32 0
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; NOT: warning:
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for.cond:
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%0 = load i32, ptr null, align 4, !dbg !43
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br i1 false, label %for.body, label %for.end, !prof !48
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for.body: ; preds = %for.cond
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ret i32 0
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for.end: ; preds = %for.cond
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ret i32 0
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}
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; Function Attrs: nocallback nofree nosync nounwind readnone speculatable willreturn
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declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
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attributes #0 = { "use-sample-profile" }
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attributes #1 = { nocallback nofree nosync nounwind readnone speculatable willreturn }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!5, !6, !7}
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!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 3.8.0 (trunk 248211) (llvm/trunk 248217)", isOptimized: false, runtimeVersion: 0, emissionKind: NoDebug, enums: !2, retainedTypes: !3)
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!1 = !DIFile(filename: "test.cc", directory: "/ssd/llvm_commit")
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!2 = !{}
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!3 = !{!4}
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!4 = !DIBasicType(name: "double", size: 64, align: 64, encoding: DW_ATE_float)
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!5 = !{i32 2, !"Dwarf Version", i32 4}
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!6 = !{i32 2, !"Debug Info Version", i32 3}
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!7 = !{i32 1, !"ProfileSummary", !8}
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!8 = !{!9, !10, !11, !12, !13, !14, !15, !16, !17, !18}
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!9 = !{!"ProfileFormat", !"SampleProfile"}
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!10 = !{!"TotalCount", i64 0}
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!11 = !{!"MaxCount", i64 0}
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!12 = !{!"MaxInternalCount", i64 0}
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!13 = !{!"MaxFunctionCount", i64 0}
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!14 = !{!"NumCounts", i64 9}
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!15 = !{!"NumFunctions", i64 1}
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!16 = !{!"IsPartialProfile", i64 0}
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!17 = !{!"PartialProfileRatio", double 0.000000e+00}
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!18 = !{!"DetailedSummary", !19}
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!19 = !{!20, !21, !22, !23, !24, !25, !26, !27, !28, !29, !30, !31, !32, !33, !34, !35}
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!20 = !{i32 10000, i64 0, i32 0}
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!21 = !{i32 100000, i64 0, i32 0}
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!22 = !{i32 200000, i64 0, i32 0}
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!23 = !{i32 300000, i64 0, i32 0}
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!24 = !{i32 400000, i64 0, i32 0}
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!25 = !{i32 500000, i64 0, i32 0}
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!26 = !{i32 600000, i64 0, i32 0}
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!27 = !{i32 700000, i64 0, i32 0}
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!28 = !{i32 800000, i64 0, i32 0}
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!29 = !{i32 900000, i64 0, i32 0}
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!30 = !{i32 950000, i64 0, i32 0}
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!31 = !{i32 990000, i64 0, i32 0}
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!32 = !{i32 999000, i64 0, i32 0}
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!33 = !{i32 999900, i64 0, i32 0}
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!34 = !{i32 999990, i64 0, i32 0}
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!35 = !{i32 999999, i64 0, i32 0}
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!36 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 4, type: !37, scopeLine: 4, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !2)
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!37 = !DISubroutineType(types: !38)
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!38 = !{!39, !39, !40}
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!39 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!40 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !41, size: 64, align: 64)
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!41 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !42, size: 64, align: 64)
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!42 = !DIBasicType(name: "char", size: 8, align: 8, encoding: DW_ATE_signed_char)
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!43 = !DILocation(line: 11, column: 22, scope: !44)
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!44 = distinct !DILexicalBlock(scope: !45, file: !1, line: 11, column: 6)
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!45 = distinct !DILexicalBlock(scope: !46, file: !1, line: 11, column: 6)
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!46 = distinct !DILexicalBlock(scope: !47, file: !1, line: 9, column: 21)
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!47 = distinct !DILexicalBlock(scope: !36, file: !1, line: 9, column: 8)
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; These branch weights shouldn't be removed by these passes
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; CHECK: !{{[0-9]+}} = !{!"branch_weights", i32 0, i32 0}
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!48 = !{!"branch_weights", i32 0, i32 0}
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