diff --git a/llvm/include/llvm/ProfileData/InstrProf.h b/llvm/include/llvm/ProfileData/InstrProf.h --- a/llvm/include/llvm/ProfileData/InstrProf.h +++ b/llvm/include/llvm/ProfileData/InstrProf.h @@ -253,6 +253,10 @@ ArrayRef VDs, uint64_t Sum, InstrProfValueKind ValueKind, uint32_t MaxMDCount); +/// Magic number in the value profile data showing a target has been +/// promoted for the instruction and shouldn't be promoted again. +const uint64_t NOMORE_ICP_MAGICNUM = -1; + /// Extract the value profile data from \p Inst which is annotated with /// value profile meta data. Return false if there is no value data annotated, /// otherwise return true. @@ -261,7 +265,7 @@ uint32_t MaxNumValueData, InstrProfValueData ValueData[], uint32_t &ActualNumValueData, uint64_t &TotalC, - bool GetZeroCntValue = false); + bool GetNoICPValue = false); inline StringRef getPGOFuncNameMetadataName() { return "PGOFuncName"; } diff --git a/llvm/lib/Analysis/IndirectCallPromotionAnalysis.cpp b/llvm/lib/Analysis/IndirectCallPromotionAnalysis.cpp --- a/llvm/lib/Analysis/IndirectCallPromotionAnalysis.cpp +++ b/llvm/lib/Analysis/IndirectCallPromotionAnalysis.cpp @@ -45,7 +45,7 @@ // Set the maximum number of targets to promote for a single indirect-call // callsite. -cl::opt +static cl::opt MaxNumPromotions("icp-max-prom", cl::init(3), cl::Hidden, cl::ZeroOrMore, cl::desc("Max number of promotions for a single indirect " "call callsite")); diff --git a/llvm/lib/ProfileData/InstrProf.cpp b/llvm/lib/ProfileData/InstrProf.cpp --- a/llvm/lib/ProfileData/InstrProf.cpp +++ b/llvm/lib/ProfileData/InstrProf.cpp @@ -983,7 +983,7 @@ uint32_t MaxNumValueData, InstrProfValueData ValueData[], uint32_t &ActualNumValueData, uint64_t &TotalC, - bool GetZeroCntValue) { + bool GetNoICPValue) { MDNode *MD = Inst.getMetadata(LLVMContext::MD_prof); if (!MD) return false; @@ -1010,7 +1010,7 @@ // Get total count ConstantInt *TotalCInt = mdconst::dyn_extract(MD->getOperand(2)); - if (!TotalCInt && !GetZeroCntValue) + if (!TotalCInt) return false; TotalC = TotalCInt->getZExtValue(); @@ -1022,10 +1022,13 @@ ConstantInt *Value = mdconst::dyn_extract(MD->getOperand(I)); ConstantInt *Count = mdconst::dyn_extract(MD->getOperand(I + 1)); - if (!Value || (!Count && !GetZeroCntValue)) + if (!Value || !Count) return false; + uint64_t CntValue = Count->getZExtValue(); + if (!GetNoICPValue && (CntValue == NOMORE_ICP_MAGICNUM)) + continue; ValueData[ActualNumValueData].Value = Value->getZExtValue(); - ValueData[ActualNumValueData].Count = Count->getZExtValue(); + ValueData[ActualNumValueData].Count = CntValue; ActualNumValueData++; } return true; diff --git a/llvm/lib/Transforms/IPO/SampleProfile.cpp b/llvm/lib/Transforms/IPO/SampleProfile.cpp --- a/llvm/lib/Transforms/IPO/SampleProfile.cpp +++ b/llvm/lib/Transforms/IPO/SampleProfile.cpp @@ -218,7 +218,11 @@ "by inlining from sample profile loader."), cl::Hidden); -extern cl::opt MaxNumPromotions; +static cl::opt + MaxNumPromotions("sample-profile-icp-max-prom", cl::init(3), cl::Hidden, + cl::ZeroOrMore, + cl::desc("Max number of promotions for a single indirect " + "call callsite in sample profile loader")); namespace { @@ -363,8 +367,7 @@ // Attempt to promote indirect call and also inline the promoted call bool tryPromoteAndInlineCandidate( Function &F, InlineCandidate &Candidate, uint64_t SumOrigin, - uint64_t &Sum, DenseSet &PromotedInsns, - SmallVector *InlinedCallSites = nullptr); + uint64_t &Sum, SmallVector *InlinedCallSites = nullptr); bool inlineHotFunctions(Function &F, DenseSet &InlinedGUIDs); InlineCost shouldInlineCandidate(InlineCandidate &Candidate); @@ -690,9 +693,14 @@ return it.first->second; } -/// If the profile count for the promotion candidate \p Candidate is 0, -/// it means \p Candidate has already been promoted for \p Inst. -static bool isPromotedBefore(const Instruction &Inst, StringRef Candidate) { +/// Check whether the indirect call promotion history of \p Inst allows +/// the promotion for \p Candidate. +/// If the profile count for the promotion candidate \p Candidate is +/// NOMORE_ICP_MAGICNUM, it means \p Candidate has already been promoted +/// for \p Inst. If we already have at least MaxNumPromotions +/// NOMORE_ICP_MAGICNUM count values in the value profile of \p Inst, we +/// cannot promote for \p Inst anymore. +static bool doesHistoryAllowICP(const Instruction &Inst, StringRef Candidate) { uint32_t NumVals = 0; uint64_t TotalCount = 0; std::unique_ptr ValueData = @@ -700,33 +708,55 @@ bool Valid = getValueProfDataFromInst(Inst, IPVK_IndirectCallTarget, MaxNumPromotions, ValueData.get(), NumVals, TotalCount, true); - if (Valid) { - for (uint32_t I = 0; I < NumVals; I++) { - // If the promotion candidate has 0 count in the metadata, it - // means the candidate has been promoted for this indirect call. - if (ValueData[I].Value == Function::getGUID(Candidate)) - return ValueData[I].Count == 0; - } + // No valid value profile so no promoted targets have been recorded + // before. Ok to do ICP. + if (!Valid) + return true; + + unsigned NumPromoted = 0; + for (uint32_t I = 0; I < NumVals; I++) { + if (ValueData[I].Count != NOMORE_ICP_MAGICNUM) + continue; + + // If the promotion candidate has NOMORE_ICP_MAGICNUM count in the + // metadata, it means the candidate has been promoted for this + // indirect call. + if (ValueData[I].Value == Function::getGUID(Candidate)) + return false; + NumPromoted++; + // If already have MaxNumPromotions promotion, don't do it anymore. + if (NumPromoted == MaxNumPromotions) + return false; } - return false; + return true; } -/// Update indirect call target profile metadata for \p Inst. If \p Total -/// is given, set TotalCount of call targets counts to \p Total, otherwise -/// keep the original value in metadata. +/// Update indirect call target profile metadata for \p Inst. +/// Usually \p Sum is the sum of counts of all the targets for \p Inst. +/// If it is 0, it means updateIDTMetaData is used to mark a +/// certain target to be promoted already. If it is not zero, +/// we expect to use it to update the total count in the value profile. static void updateIDTMetaData(Instruction &Inst, const SmallVectorImpl &CallTargets, - uint64_t Total = 0) { - DenseMap ValueCountMap; + uint64_t Sum = 0) { + assert((Sum != 0 || (CallTargets.size() == 1 && + CallTargets[0].Count == NOMORE_ICP_MAGICNUM)) && + "If sum is 0, assume only one element in CallTargets with count " + "being NOMORE_ICP_MAGICNUM"); uint32_t NumVals = 0; - uint64_t TotalCount = 0; + // OldSum is the existing total count in the value profile data. + // It will be replaced by Sum if Sum is not 0. + uint64_t OldSum = 0; std::unique_ptr ValueData = std::make_unique(MaxNumPromotions); bool Valid = getValueProfDataFromInst(Inst, IPVK_IndirectCallTarget, MaxNumPromotions, - ValueData.get(), NumVals, TotalCount, true); + ValueData.get(), NumVals, OldSum, true); + + DenseMap ValueCountMap; + // Initialize ValueCountMap with existing value profile data. if (Valid) { for (uint32_t I = 0; I < NumVals; I++) ValueCountMap[ValueData[I].Value] = ValueData[I].Count; @@ -736,13 +766,24 @@ auto Pair = ValueCountMap.try_emplace(Data.Value, Data.Count); if (Pair.second) continue; - // Update existing profile count of the call target if it is not 0. - // If it is 0, the call target has been promoted so keep it as 0. - if (Pair.first->second != 0) + // Whenever the count is NOMORE_ICP_MAGICNUM for a value, keep it + // in the ValueCountMap. If both the count in CallTargets and the + // count in ValueCountMap is not NOMORE_ICP_MAGICNUM, keep the + // count in CallTargets. + if (Pair.first->second != NOMORE_ICP_MAGICNUM && + Data.Count == NOMORE_ICP_MAGICNUM) { + OldSum -= Pair.first->second; + Pair.first->second = NOMORE_ICP_MAGICNUM; + } else if (Pair.first->second == NOMORE_ICP_MAGICNUM && + Data.Count != NOMORE_ICP_MAGICNUM) { + assert(Sum >= Data.Count && "Sum should never be less than Data.Count"); + Sum -= Data.Count; + } else if (Pair.first->second != NOMORE_ICP_MAGICNUM && + Data.Count != NOMORE_ICP_MAGICNUM) { + // Sum will be used in this case. Although the existing count + // for the current value in value profile will be overrided, + // no need to update OldSum. Pair.first->second = Data.Count; - else { - assert(Total >= Data.Count && "Total should be >= Data.Count"); - Total -= Data.Count; } } @@ -751,15 +792,19 @@ NewCallTargets.emplace_back( InstrProfValueData{ValueCount.first, ValueCount.second}); } + llvm::sort(NewCallTargets, [](const InstrProfValueData &L, const InstrProfValueData &R) { if (L.Count != R.Count) return L.Count > R.Count; return L.Value > R.Value; }); + + uint32_t MaxMDCount = + std::min(NewCallTargets.size(), static_cast(MaxNumPromotions)); annotateValueSite(*Inst.getParent()->getParent()->getParent(), Inst, - NewCallTargets, Total ? Total : TotalCount, - IPVK_IndirectCallTarget, NewCallTargets.size()); + NewCallTargets, Sum ? Sum : OldSum, IPVK_IndirectCallTarget, + MaxMDCount); } /// Attempt to promote indirect call and also inline the promoted call. @@ -767,12 +812,10 @@ /// \param F Caller function. /// \param Candidate ICP and inline candidate. /// \param Sum Sum of target counts for indirect call. -/// \param PromotedInsns Map to keep track of indirect call already processed. /// \param InlinedCallSite Output vector for new call sites exposed after /// inlining. bool SampleProfileLoader::tryPromoteAndInlineCandidate( Function &F, InlineCandidate &Candidate, uint64_t SumOrigin, uint64_t &Sum, - DenseSet &PromotedInsns, SmallVector *InlinedCallSite) { auto CalleeFunctionName = Candidate.CalleeSamples->getFuncName(); auto R = SymbolMap.find(CalleeFunctionName); @@ -780,7 +823,7 @@ return false; auto &CI = *Candidate.CallInstr; - if (isPromotedBefore(CI, R->getValue()->getName())) + if (!doesHistoryAllowICP(CI, R->getValue()->getName())) return false; const char *Reason = "Callee function not available"; @@ -793,10 +836,10 @@ if (!R->getValue()->isDeclaration() && R->getValue()->getSubprogram() && R->getValue()->hasFnAttribute("use-sample-profile") && R->getValue() != &F && isLegalToPromote(CI, R->getValue(), &Reason)) { - // For promoted target, save 0 count in the value profile metadata so - // the target won't be promoted again. - SmallVector SortedCallTargets = { - InstrProfValueData{Function::getGUID(R->getValue()->getName()), 0}}; + // For promoted target, set its value with NOMORE_ICP_MAGICNUM count + // in the value profile metadata so the target won't be promoted again. + SmallVector SortedCallTargets = {InstrProfValueData{ + Function::getGUID(R->getValue()->getName()), NOMORE_ICP_MAGICNUM}}; updateIDTMetaData(CI, SortedCallTargets); auto *DI = &pgo::promoteIndirectCall( @@ -811,7 +854,6 @@ // be prorated so that the it will reflect the real callsite counts. setProbeDistributionFactor(CI, Candidate.CallsiteDistribution * Sum / SumOrigin); - PromotedInsns.insert(Candidate.CallInstr); Candidate.CallInstr = DI; if (isa(DI) || isa(DI)) { bool Inlined = tryInlineCandidate(Candidate, InlinedCallSite); @@ -884,8 +926,6 @@ /// \returns True if there is any inline happened. bool SampleProfileLoader::inlineHotFunctions( Function &F, DenseSet &InlinedGUIDs) { - DenseSet PromotedInsns; - // ProfAccForSymsInList is used in callsiteIsHot. The assertion makes sure // Profile symbol list is ignored when profile-sample-accurate is on. assert((!ProfAccForSymsInList || @@ -939,8 +979,6 @@ if (CalledFunction == &F) continue; if (I->isIndirectCall()) { - if (PromotedInsns.count(I)) - continue; uint64_t Sum; for (const auto *FS : findIndirectCallFunctionSamples(*I, Sum)) { uint64_t SumOrigin = Sum; @@ -953,8 +991,7 @@ continue; Candidate = {I, FS, FS->getEntrySamples(), 1.0}; - if (tryPromoteAndInlineCandidate(F, Candidate, SumOrigin, Sum, - PromotedInsns)) { + if (tryPromoteAndInlineCandidate(F, Candidate, SumOrigin, Sum)) { LocalNotInlinedCallSites.erase(I); LocalChanged = true; } @@ -1163,7 +1200,6 @@ bool SampleProfileLoader::inlineHotFunctionsWithPriority( Function &F, DenseSet &InlinedGUIDs) { - DenseSet PromotedInsns; assert(ProfileIsCS && "Prioritiy based inliner only works with CSSPGO now"); // ProfAccForSymsInList is used in callsiteIsHot. The assertion makes sure @@ -1212,8 +1248,6 @@ if (CalledFunction == &F) continue; if (I->isIndirectCall()) { - if (PromotedInsns.count(I)) - continue; uint64_t Sum; auto CalleeSamples = findIndirectCallFunctionSamples(*I, Sum); uint64_t SumOrigin = Sum; @@ -1248,7 +1282,7 @@ Candidate = {I, FS, EntryCountDistributed, Candidate.CallsiteDistribution}; if (tryPromoteAndInlineCandidate(F, Candidate, SumOrigin, Sum, - PromotedInsns, &InlinedCallSites)) { + &InlinedCallSites)) { for (auto *CB : InlinedCallSites) { if (getInlineCandidate(&NewCandidate, CB)) CQueue.emplace(NewCandidate); @@ -1345,6 +1379,8 @@ Sum += NameFS.second.getEntrySamples(); } } + if (!Sum) + continue; updateIDTMetaData(I, SortedCallTargets, Sum); } else if (!isa(&I)) { I.setMetadata(LLVMContext::MD_prof, diff --git a/llvm/test/Transforms/SampleProfile/Inputs/norepeated-icp-2.prof b/llvm/test/Transforms/SampleProfile/Inputs/norepeated-icp-2.prof new file mode 100644 --- /dev/null +++ b/llvm/test/Transforms/SampleProfile/Inputs/norepeated-icp-2.prof @@ -0,0 +1,16 @@ +_Z3goov:5860:1 + 1: 5279 _Z3foov:2000 _Z3barv:1000 + 2: 5279 _Z3foov:2000 _Z3barv:1000 + 3: 5279 _Z3foov:2000 _Z3barv:1000 + 1: _Z3hoov:5860 + 1: 5000 + 1: _Z3moov:5860 + 1: 5000 + 2: _Z3hoov:5860 + 1: 5000 + 2: _Z3moov:5860 + 1: 5000 + 3: _Z3hoov:5860 + 1: 5000 + 3: _Z3moov:5860 + 1: 5000 diff --git a/llvm/test/Transforms/SampleProfile/indirect-call.ll b/llvm/test/Transforms/SampleProfile/indirect-call.ll --- a/llvm/test/Transforms/SampleProfile/indirect-call.ll +++ b/llvm/test/Transforms/SampleProfile/indirect-call.ll @@ -202,7 +202,7 @@ ; CHECK: ![[PROF]] = !{!"VP", i32 0, i64 3457, i64 9191153033785521275, i64 2059, i64 -1069303473483922844, i64 1398} ; CHECK: ![[BR1]] = !{!"branch_weights", i32 4000, i32 4000} ; CHECK: ![[BR2]] = !{!"branch_weights", i32 3000, i32 1000} -; CHECK: ![[VP]] = !{!"VP", i32 0, i64 8000, i64 -6391416044382067764, i64 1000, i64 7476224446746900038, i64 0, i64 925324185419832389, i64 0} +; CHECK: ![[VP]] = !{!"VP", i32 0, i64 8000, i64 7476224446746900038, i64 -1, i64 925324185419832389, i64 -1, i64 -6391416044382067764, i64 1000} ; CHECK: ![[BR3]] = !{!"branch_weights", i32 1, i32 0} !6 = distinct !DISubprogram(name: "test_inline", scope: !1, file: !1, line: 6, unit: !0) !7 = !DILocation(line: 7, scope: !6) diff --git a/llvm/test/Transforms/SampleProfile/norepeated-icp-2.ll b/llvm/test/Transforms/SampleProfile/norepeated-icp-2.ll new file mode 100644 --- /dev/null +++ b/llvm/test/Transforms/SampleProfile/norepeated-icp-2.ll @@ -0,0 +1,124 @@ +; RUN: opt < %s -sample-profile-icp-max-prom=2 -passes=sample-profile -sample-profile-file=%S/Inputs/norepeated-icp-2.prof -S | FileCheck %s --check-prefix=MAX2 +; RUN: opt < %s -sample-profile-icp-max-prom=4 -passes=sample-profile -sample-profile-file=%S/Inputs/norepeated-icp-2.prof -S | FileCheck %s --check-prefix=MAX4 + +target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" +target triple = "x86_64-unknown-linux-gnu" + +@.str = private unnamed_addr constant [5 x i8] c"moo\0A\00", align 1 +@p = dso_local global void ()* null, align 8 +@cond = dso_local global i8 0, align 1 +@str = private unnamed_addr constant [4 x i8] c"moo\00", align 1 + +; Function Attrs: uwtable mustprogress +define dso_local void @_Z3moov() #0 !dbg !7 { +entry: + %puts = call i32 @puts(i8* nonnull dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @str, i64 0, i64 0)), !dbg !9 + ret void, !dbg !10 +} + +; Function Attrs: nofree nounwind +declare dso_local noundef i32 @printf(i8* nocapture noundef readonly, ...) #1 + +; Function Attrs: uwtable mustprogress +define dso_local void @_Z3hoov() #0 !dbg !11 { +entry: + %0 = load volatile i8, i8* @cond, align 1, !dbg !12, !range !17 + %tobool.not = icmp eq i8 %0, 0, !dbg !12 + br i1 %tobool.not, label %if.end, label %if.then, !dbg !12 + +if.then: ; preds = %entry + call void @_Z10hoo_calleev(), !dbg !18 + br label %if.end, !dbg !18 + +if.end: ; preds = %if.then, %entry + store void ()* @_Z3moov, void ()** @p, align 8, !dbg !19 + ret void, !dbg !22 +} + +declare !dbg !23 dso_local void @_Z10hoo_calleev() #2 + +; MAX2-LABEL: @_Z3goov( +; MAX2: icmp eq void ()* {{.*}} @_Z3hoov +; MAX2: call void %t0(), {{.*}} !prof ![[PROF_ID1:[0-9]+]] +; MAX2-NOT: icmp eq void ()* {{.*}} @_Z3hoov +; MAX2-NOT: icmp eq void ()* {{.*}} @_Z3moov +; MAX2: call void %t1(), {{.*}} !prof ![[PROF_ID2:[0-9]+]] +; MAX2-NOT: icmp eq void ()* {{.*}} @_Z3hoov +; MAX2-NOT: icmp eq void ()* {{.*}} @_Z3moov +; MAX2: call void %t2(), {{.*}} !prof ![[PROF_ID2:[0-9]+]] +; MAX2: ret void +; MAX4-LABEL: @_Z3goov( +; MAX4: icmp eq void ()* {{.*}} @_Z3hoov +; MAX4: icmp eq void ()* {{.*}} @_Z3moov +; MAX4: call void %t0(), {{.*}} !prof ![[PROF_ID3:[0-9]+]] +; MAX4: icmp eq void ()* {{.*}} @_Z3hoov +; MAX4: icmp eq void ()* {{.*}} @_Z3moov +; MAX4: call void %t1(), {{.*}} !prof ![[PROF_ID4:[0-9]+]] +; MAX4-NOT: icmp eq void ()* {{.*}} @_Z3hoov +; MAX4-NOT: icmp eq void ()* {{.*}} @_Z3moov +; MAX4: call void %t2(), {{.*}} !prof ![[PROF_ID5:[0-9]+]] +; MAX4: ret void + +; Function Attrs: uwtable mustprogress +define dso_local void @_Z3goov() #0 !dbg !24 { +entry: + %t0 = load void ()*, void ()** @p, align 8, !dbg !25 + call void %t0(), !dbg !26, !prof !30 + %t1 = load void ()*, void ()** @p, align 8, !dbg !25 + call void %t1(), !dbg !28, !prof !31 + %t2 = load void ()*, void ()** @p, align 8, !dbg !25 + call void %t2(), !dbg !29, !prof !32 + ret void, !dbg !27 +} + +; MAX2: ![[PROF_ID1]] = !{!"VP", i32 0, i64 13000, i64 -7701940972712279918, i64 -1, i64 1850239051784516332, i64 -1} +; MAX2: ![[PROF_ID2]] = !{!"VP", i32 0, i64 13000, i64 3137940972712279918, i64 -1, i64 1850239051784516332, i64 -1} +; MAX4: ![[PROF_ID3]] = !{!"VP", i32 0, i64 13000, i64 -7383239051784516332, i64 -1, i64 -7701940972712279918, i64 -1, i64 1850239051784516332, i64 -1, i64 9191153033785521275, i64 2000} +; MAX4: ![[PROF_ID4]] = !{!"VP", i32 0, i64 13000, i64 -7383239051784516332, i64 -1, i64 -7701940972712279918, i64 -1, i64 3137940972712279918, i64 -1, i64 1850239051784516332, i64 -1} +; MAX4: ![[PROF_ID5]] = !{!"VP", i32 0, i64 13000, i64 4128940972712279918, i64 -1, i64 3137940972712279918, i64 -1, i64 2132940972712279918, i64 -1, i64 1850239051784516332, i64 -1} + +; Function Attrs: nofree nounwind +declare noundef i32 @puts(i8* nocapture noundef readonly) #3 + +attributes #0 = { uwtable mustprogress "disable-tail-calls"="false" "frame-pointer"="none" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" "unsafe-fp-math"="false" "use-sample-profile" "use-soft-float"="false" } +attributes #1 = { nofree nounwind "disable-tail-calls"="false" "frame-pointer"="none" "less-precise-fpmad"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" "unsafe-fp-math"="false" "use-soft-float"="false" } +attributes #2 = { "disable-tail-calls"="false" "frame-pointer"="none" "less-precise-fpmad"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" "unsafe-fp-math"="false" "use-soft-float"="false" } +attributes #3 = { nofree nounwind } + +!llvm.dbg.cu = !{!0} +!llvm.module.flags = !{!3, !4, !5} +!llvm.ident = !{!6} + +!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !1, producer: "clang version 13.0.0 (https://github.com/llvm/llvm-project.git f8226e6e284e9f199790bdb330f87d71adb5376f)", isOptimized: true, runtimeVersion: 0, emissionKind: LineTablesOnly, enums: !2, splitDebugInlining: false, debugInfoForProfiling: true, nameTableKind: None) +!1 = !DIFile(filename: "1.cc", directory: "/usr/local/google/home/wmi/workarea/llvm/build/splitprofile") +!2 = !{} +!3 = !{i32 7, !"Dwarf Version", i32 4} +!4 = !{i32 2, !"Debug Info Version", i32 3} +!5 = !{i32 1, !"wchar_size", i32 4} +!6 = !{!"clang version 13.0.0 (https://github.com/llvm/llvm-project.git f8226e6e284e9f199790bdb330f87d71adb5376f)"} +!7 = distinct !DISubprogram(name: "moo", linkageName: "_Z3moov", scope: !1, file: !1, line: 1, type: !8, scopeLine: 1, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !2) +!8 = !DISubroutineType(types: !2) +!9 = !DILocation(line: 2, column: 3, scope: !7) +!10 = !DILocation(line: 3, column: 1, scope: !7) +!11 = distinct !DISubprogram(name: "hoo", linkageName: "_Z3hoov", scope: !1, file: !1, line: 9, type: !8, scopeLine: 9, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !2) +!12 = !DILocation(line: 10, column: 7, scope: !11) +!13 = !{!14, !14, i64 0} +!14 = !{!"bool", !15, i64 0} +!15 = !{!"omnipotent char", !16, i64 0} +!16 = !{!"Simple C++ TBAA"} +!17 = !{i8 0, i8 2} +!18 = !DILocation(line: 11, column: 5, scope: !11) +!19 = !DILocation(line: 12, column: 5, scope: !11) +!20 = !{!21, !21, i64 0} +!21 = !{!"any pointer", !15, i64 0} +!22 = !DILocation(line: 13, column: 1, scope: !11) +!23 = !DISubprogram(name: "hoo_callee", linkageName: "_Z10hoo_calleev", scope: !1, file: !1, line: 5, type: !8, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2) +!24 = distinct !DISubprogram(name: "goo", linkageName: "_Z3goov", scope: !1, file: !1, line: 15, type: !8, scopeLine: 15, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !2) +!25 = !DILocation(line: 16, column: 5, scope: !24) +!26 = !DILocation(line: 16, column: 3, scope: !24) +!27 = !DILocation(line: 19, column: 1, scope: !24) +!28 = !DILocation(line: 17, column: 3, scope: !24) +!29 = !DILocation(line: 18, column: 3, scope: !24) +!30 = !{!"VP", i32 0, i64 0, i64 1850239051784516332, i64 -1} +!31 = !{!"VP", i32 0, i64 0, i64 1850239051784516332, i64 -1, i64 3137940972712279918, i64 -1} +!32 = !{!"VP", i32 0, i64 0, i64 1850239051784516332, i64 -1, i64 3137940972712279918, i64 -1, i64 2132940972712279918, i64 -1, i64 4128940972712279918, i64 -1}