97e2aeab71
Fix two issues for profile staleness report. 1) It should be more accurate to use the sum of all entry count(`getHeadSamplesEstimate`) for the callsite samples than the total samples, since even the top-level callsite is mismatched, it does affect the inlining but it can still be merged into base profile and used later. 2) I accidentally missed to persist the num of mismatched callsite into binary. Also added the asm testing to test the decoding of the section. Reviewed By: hoy, wenlei Differential Revision: https://reviews.llvm.org/D140063
225 lines
12 KiB
LLVM
225 lines
12 KiB
LLVM
; REQUIRES: x86_64-linux
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; RUN: opt < %s -passes=sample-profile -sample-profile-file=%S/Inputs/profile-mismatch.prof -report-profile-staleness -persist-profile-staleness -S 2>%t -o %t.ll
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; RUN: FileCheck %s --input-file %t
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; RUN: FileCheck %s --input-file %t.ll -check-prefix=CHECK-MD
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; RUN: llc < %t.ll -filetype=obj -o %t.obj
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; RUN: llvm-objdump --section-headers %t.obj | FileCheck %s --check-prefix=CHECK-OBJ
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; RUN: llc < %t.ll -filetype=asm -o - | FileCheck %s --check-prefix=CHECK-ASM
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; CHECK: (2/3) of callsites' profile are invalid and (15/25) of samples are discarded due to callsite location mismatch.
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; CHECK-MD: ![[#]] = !{!"NumMismatchedCallsites", i64 2, !"TotalProfiledCallsites", i64 3, !"MismatchedCallsiteSamples", i64 15, !"TotalCallsiteSamples", i64 25}
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; CHECK-OBJ: .llvm_stats
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; CHECK-ASM: .section .llvm_stats,"",@progbits
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; CHECK-ASM: .byte 22
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; CHECK-ASM: .ascii "NumMismatchedCallsites"
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; CHECK-ASM: .byte 4
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; CHECK-ASM: .ascii "Mg=="
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; CHECK-ASM: .byte 22
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; CHECK-ASM: .ascii "TotalProfiledCallsites"
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; CHECK-ASM: .byte 4
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; CHECK-ASM: .ascii "Mw=="
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; CHECK-ASM: .byte 25
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; CHECK-ASM: .ascii "MismatchedCallsiteSamples"
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; CHECK-ASM: .byte 4
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; CHECK-ASM: .ascii "MTU="
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; CHECK-ASM: .byte 20
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; CHECK-ASM: .ascii "TotalCallsiteSamples"
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; CHECK-ASM: .byte 4
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; CHECK-ASM: .ascii "MjU="
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target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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@x = dso_local global i32 0, align 4, !dbg !0
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; Function Attrs: nounwind uwtable
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define dso_local i32 @foo(i32 noundef %x) #0 !dbg !12 {
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entry:
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%y = alloca i32, align 4
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call void @llvm.dbg.value(metadata i32 %x, metadata !16, metadata !DIExpression()), !dbg !18
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call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %y), !dbg !19
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call void @llvm.dbg.declare(metadata ptr %y, metadata !17, metadata !DIExpression()), !dbg !20
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%add = add nsw i32 %x, 1, !dbg !21
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store volatile i32 %add, ptr %y, align 4, !dbg !20, !tbaa !22
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%y.0. = load volatile i32, ptr %y, align 4, !dbg !26, !tbaa !22
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%add1 = add nsw i32 %y.0., 1, !dbg !27
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call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %y), !dbg !28
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ret i32 %add1, !dbg !29
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}
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; Function Attrs: mustprogress nocallback nofree nosync nounwind readnone speculatable willreturn
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declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
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; Function Attrs: argmemonly mustprogress nocallback nofree nosync nounwind willreturn
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declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #2
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; Function Attrs: argmemonly mustprogress nocallback nofree nosync nounwind willreturn
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declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #2
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; Function Attrs: noinline nounwind uwtable
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define dso_local i32 @bar(i32 noundef %x) #3 !dbg !30 {
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entry:
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call void @llvm.dbg.value(metadata i32 %x, metadata !32, metadata !DIExpression()), !dbg !33
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%add = add nsw i32 %x, 2, !dbg !34
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ret i32 %add, !dbg !35
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}
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; Function Attrs: noinline nounwind uwtable
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define dso_local i32 @matched(i32 noundef %x) #3 !dbg !36 {
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entry:
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call void @llvm.dbg.value(metadata i32 %x, metadata !38, metadata !DIExpression()), !dbg !39
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%add = add nsw i32 %x, 3, !dbg !40
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ret i32 %add, !dbg !41
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}
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; Function Attrs: nounwind uwtable
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define dso_local i32 @main() #0 !dbg !42 {
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entry:
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call void @llvm.dbg.value(metadata i32 0, metadata !46, metadata !DIExpression()), !dbg !52
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br label %for.cond, !dbg !53
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for.cond: ; preds = %for.cond.cleanup3, %entry
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%i.0 = phi i32 [ 0, %entry ], [ %inc8, %for.cond.cleanup3 ], !dbg !52
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call void @llvm.dbg.value(metadata i32 %i.0, metadata !46, metadata !DIExpression()), !dbg !52
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%cmp = icmp ult i32 %i.0, 1000, !dbg !54
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br i1 %cmp, label %for.body, label %for.cond.cleanup, !dbg !56
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for.cond.cleanup: ; preds = %for.cond
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ret i32 0, !dbg !58
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for.body: ; preds = %for.cond
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call void @llvm.dbg.value(metadata i32 0, metadata !48, metadata !DIExpression()), !dbg !59
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br label %for.cond1, !dbg !60
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for.cond1: ; preds = %for.body4, %for.body
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%a.0 = phi i32 [ 0, %for.body ], [ %inc, %for.body4 ], !dbg !59
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call void @llvm.dbg.value(metadata i32 %a.0, metadata !48, metadata !DIExpression()), !dbg !59
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%cmp2 = icmp ult i32 %a.0, 10000, !dbg !61
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br i1 %cmp2, label %for.body4, label %for.cond.cleanup3, !dbg !64
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for.cond.cleanup3: ; preds = %for.cond1
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%inc8 = add nuw nsw i32 %i.0, 1, !dbg !66
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call void @llvm.dbg.value(metadata i32 %inc8, metadata !46, metadata !DIExpression()), !dbg !52
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br label %for.cond, !dbg !68, !llvm.loop !69
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for.body4: ; preds = %for.cond1
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%0 = load volatile i32, ptr @x, align 4, !dbg !73, !tbaa !22
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%call = call i32 @matched(i32 noundef %0), !dbg !75
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store volatile i32 %call, ptr @x, align 4, !dbg !76, !tbaa !22
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%1 = load volatile i32, ptr @x, align 4, !dbg !77, !tbaa !22
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%call5 = call i32 @foo(i32 noundef %1), !dbg !78
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store volatile i32 %call5, ptr @x, align 4, !dbg !79, !tbaa !22
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%2 = load volatile i32, ptr @x, align 4, !dbg !80, !tbaa !22
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%call6 = call i32 @bar(i32 noundef %2), !dbg !81
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store volatile i32 %call6, ptr @x, align 4, !dbg !82, !tbaa !22
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%inc = add nuw nsw i32 %a.0, 1, !dbg !83
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call void @llvm.dbg.value(metadata i32 %inc, metadata !48, metadata !DIExpression()), !dbg !59
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br label %for.cond1, !dbg !85, !llvm.loop !86
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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.value(metadata, metadata, metadata) #4
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attributes #0 = { nounwind uwtable "frame-pointer"="none" "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" "use-sample-profile" }
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attributes #1 = { mustprogress nocallback nofree nosync nounwind readnone speculatable willreturn }
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attributes #2 = { argmemonly mustprogress nocallback nofree nosync nounwind willreturn }
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attributes #3 = { noinline nounwind uwtable "frame-pointer"="none" "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" "use-sample-profile" }
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attributes #4 = { nocallback nofree nosync nounwind readnone speculatable willreturn }
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!llvm.dbg.cu = !{!2}
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!llvm.module.flags = !{!7, !8, !9, !10}
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!llvm.ident = !{!11}
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!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
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!1 = distinct !DIGlobalVariable(name: "x", scope: !2, file: !3, line: 1, type: !5, isLocal: false, isDefinition: true)
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!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, globals: !4, splitDebugInlining: false, debugInfoForProfiling: true, nameTableKind: None)
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!3 = !DIFile(filename: "test.c", directory: "test")
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!4 = !{!0}
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!5 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: !6)
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!6 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!7 = !{i32 7, !"Dwarf Version", i32 5}
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!8 = !{i32 2, !"Debug Info Version", i32 3}
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!9 = !{i32 1, !"wchar_size", i32 4}
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!10 = !{i32 7, !"uwtable", i32 2}
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!11 = !{!""}
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!12 = distinct !DISubprogram(name: "foo", scope: !3, file: !3, line: 2, type: !13, scopeLine: 2, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !15)
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!13 = !DISubroutineType(types: !14)
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!14 = !{!6, !6}
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!15 = !{!16, !17}
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!16 = !DILocalVariable(name: "x", arg: 1, scope: !12, file: !3, line: 2, type: !6)
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!17 = !DILocalVariable(name: "y", scope: !12, file: !3, line: 3, type: !5)
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!18 = !DILocation(line: 0, scope: !12)
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!19 = !DILocation(line: 3, column: 3, scope: !12)
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!20 = !DILocation(line: 3, column: 16, scope: !12)
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!21 = !DILocation(line: 3, column: 22, scope: !12)
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!22 = !{!23, !23, i64 0}
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!23 = !{!"int", !24, i64 0}
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!24 = !{!"omnipotent char", !25, i64 0}
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!25 = !{!"Simple C/C++ TBAA"}
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!26 = !DILocation(line: 4, column: 10, scope: !12)
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!27 = !DILocation(line: 4, column: 12, scope: !12)
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!28 = !DILocation(line: 5, column: 1, scope: !12)
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!29 = !DILocation(line: 4, column: 3, scope: !12)
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!30 = distinct !DISubprogram(name: "bar", scope: !3, file: !3, line: 7, type: !13, scopeLine: 7, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !31)
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!31 = !{!32}
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!32 = !DILocalVariable(name: "x", arg: 1, scope: !30, file: !3, line: 7, type: !6)
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!33 = !DILocation(line: 0, scope: !30)
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!34 = !DILocation(line: 8, column: 12, scope: !30)
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!35 = !DILocation(line: 8, column: 3, scope: !30)
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!36 = distinct !DISubprogram(name: "matched", scope: !3, file: !3, line: 11, type: !13, scopeLine: 11, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !37)
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!37 = !{!38}
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!38 = !DILocalVariable(name: "x", arg: 1, scope: !36, file: !3, line: 11, type: !6)
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!39 = !DILocation(line: 0, scope: !36)
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!40 = !DILocation(line: 12, column: 12, scope: !36)
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!41 = !DILocation(line: 12, column: 3, scope: !36)
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!42 = distinct !DISubprogram(name: "main", scope: !3, file: !3, line: 15, type: !43, scopeLine: 15, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !45)
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!43 = !DISubroutineType(types: !44)
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!44 = !{!6}
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!45 = !{!46, !48}
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!46 = !DILocalVariable(name: "i", scope: !47, file: !3, line: 16, type: !6)
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!47 = distinct !DILexicalBlock(scope: !42, file: !3, line: 16, column: 3)
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!48 = !DILocalVariable(name: "a", scope: !49, file: !3, line: 17, type: !6)
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!49 = distinct !DILexicalBlock(scope: !50, file: !3, line: 17, column: 5)
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!50 = distinct !DILexicalBlock(scope: !51, file: !3, line: 16, column: 34)
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!51 = distinct !DILexicalBlock(scope: !47, file: !3, line: 16, column: 3)
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!52 = !DILocation(line: 0, scope: !47)
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!53 = !DILocation(line: 16, column: 8, scope: !47)
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!54 = !DILocation(line: 16, column: 21, scope: !55)
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!55 = !DILexicalBlockFile(scope: !51, file: !3, discriminator: 2)
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!56 = !DILocation(line: 16, column: 3, scope: !57)
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!57 = !DILexicalBlockFile(scope: !47, file: !3, discriminator: 2)
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!58 = !DILocation(line: 23, column: 1, scope: !42)
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!59 = !DILocation(line: 0, scope: !49)
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!60 = !DILocation(line: 17, column: 10, scope: !49)
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!61 = !DILocation(line: 17, column: 23, scope: !62)
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!62 = !DILexicalBlockFile(scope: !63, file: !3, discriminator: 2)
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!63 = distinct !DILexicalBlock(scope: !49, file: !3, line: 17, column: 5)
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!64 = !DILocation(line: 17, column: 5, scope: !65)
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!65 = !DILexicalBlockFile(scope: !49, file: !3, discriminator: 2)
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!66 = !DILocation(line: 16, column: 30, scope: !67)
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!67 = !DILexicalBlockFile(scope: !51, file: !3, discriminator: 4)
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!68 = !DILocation(line: 16, column: 3, scope: !67)
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!69 = distinct !{!69, !70, !71, !72}
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!70 = !DILocation(line: 16, column: 3, scope: !47)
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!71 = !DILocation(line: 22, column: 3, scope: !47)
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!72 = !{!"llvm.loop.mustprogress"}
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!73 = !DILocation(line: 18, column: 19, scope: !74)
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!74 = distinct !DILexicalBlock(scope: !63, file: !3, line: 17, column: 37)
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!75 = !DILocation(line: 18, column: 11, scope: !74)
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!76 = !DILocation(line: 18, column: 9, scope: !74)
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!77 = !DILocation(line: 19, column: 15, scope: !74)
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!78 = !DILocation(line: 19, column: 11, scope: !74)
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!79 = !DILocation(line: 19, column: 9, scope: !74)
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!80 = !DILocation(line: 20, column: 15, scope: !74)
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!81 = !DILocation(line: 20, column: 11, scope: !74)
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!82 = !DILocation(line: 20, column: 9, scope: !74)
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!83 = !DILocation(line: 17, column: 33, scope: !84)
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!84 = !DILexicalBlockFile(scope: !63, file: !3, discriminator: 4)
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!85 = !DILocation(line: 17, column: 5, scope: !84)
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!86 = distinct !{!86, !87, !88, !72}
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!87 = !DILocation(line: 17, column: 5, scope: !49)
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!88 = !DILocation(line: 21, column: 5, scope: !49)
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