diff --git a/llvm/include/llvm/ProfileData/SampleProf.h b/llvm/include/llvm/ProfileData/SampleProf.h index 4861cdb98d1d..2f71bbc6bbbe 100644 --- a/llvm/include/llvm/ProfileData/SampleProf.h +++ b/llvm/include/llvm/ProfileData/SampleProf.h @@ -598,21 +598,9 @@ public: ErrorOr findSamplesAt(uint32_t LineOffset, uint32_t Discriminator) const { const auto &ret = BodySamples.find(LineLocation(LineOffset, Discriminator)); - if (ret == BodySamples.end()) { - // For CSSPGO, in order to conserve profile size, we no longer write out - // locations profile for those not hit during training, so we need to - // treat them as zero instead of error here. - if (FunctionSamples::ProfileIsCS || FunctionSamples::ProfileIsProbeBased) - return 0; + if (ret == BodySamples.end()) return std::error_code(); - } else { - // Return error for an invalid sample count which is usually assigned to - // dangling probe. - if (FunctionSamples::ProfileIsProbeBased && - ret->second.getSamples() == FunctionSamples::InvalidProbeCount) - return std::error_code(); - return ret->second.getSamples(); - } + return ret->second.getSamples(); } /// Returns the call target map collected at a given location. @@ -890,10 +878,6 @@ public: const DILocation *DIL, SampleProfileReaderItaniumRemapper *Remapper = nullptr) const; - // The invalid sample count is used to represent samples collected for a - // dangling probe. - static constexpr uint64_t InvalidProbeCount = UINT64_MAX; - static bool ProfileIsProbeBased; static bool ProfileIsCS; diff --git a/llvm/lib/ProfileData/ProfileSummaryBuilder.cpp b/llvm/lib/ProfileData/ProfileSummaryBuilder.cpp index 6def44e45251..2ab0f0cbc17a 100644 --- a/llvm/lib/ProfileData/ProfileSummaryBuilder.cpp +++ b/llvm/lib/ProfileData/ProfileSummaryBuilder.cpp @@ -113,8 +113,6 @@ void SampleProfileSummaryBuilder::addRecord( } for (const auto &I : FS.getBodySamples()) { uint64_t Count = I.second.getSamples(); - if (!sampleprof::FunctionSamples::ProfileIsProbeBased || - (Count != sampleprof::FunctionSamples::InvalidProbeCount)) addCount(Count); } for (const auto &I : FS.getCallsiteSamples()) diff --git a/llvm/lib/ProfileData/SampleProf.cpp b/llvm/lib/ProfileData/SampleProf.cpp index b6abf6e0c313..b2b786a15786 100644 --- a/llvm/lib/ProfileData/SampleProf.cpp +++ b/llvm/lib/ProfileData/SampleProf.cpp @@ -119,16 +119,7 @@ raw_ostream &llvm::sampleprof::operator<<(raw_ostream &OS, sampleprof_error SampleRecord::merge(const SampleRecord &Other, uint64_t Weight) { sampleprof_error Result; - // With pseudo probes, merge a dangling sample with a non-dangling sample - // should result in a dangling sample. - if (FunctionSamples::ProfileIsProbeBased && - (getSamples() == FunctionSamples::InvalidProbeCount || - Other.getSamples() == FunctionSamples::InvalidProbeCount)) { - NumSamples = FunctionSamples::InvalidProbeCount; - Result = sampleprof_error::success; - } else { - Result = addSamples(Other.getSamples(), Weight); - } + Result = addSamples(Other.getSamples(), Weight); for (const auto &I : Other.getCallTargets()) { MergeResult(Result, addCalledTarget(I.first(), I.second, Weight)); } diff --git a/llvm/test/Transforms/SampleProfile/Inputs/pseudo-probe-inline.prof b/llvm/test/Transforms/SampleProfile/Inputs/pseudo-probe-inline.prof index fd3ff773e85d..78ac8109570f 100644 --- a/llvm/test/Transforms/SampleProfile/Inputs/pseudo-probe-inline.prof +++ b/llvm/test/Transforms/SampleProfile/Inputs/pseudo-probe-inline.prof @@ -6,6 +6,9 @@ 1: 23 2: 382920 3: 382915 + 4: 0 + 5: 0 + 6: 0 !CFGChecksum: 138828622701 [bar]:23:23 1: 23 @@ -15,4 +18,7 @@ 1: 23 2: 382920 3: 382915 + 4: 0 + 5: 0 + 6: 0 !CFGChecksum: 138828622701 \ No newline at end of file diff --git a/llvm/test/tools/llvm-profgen/fname-canonicalization.test b/llvm/test/tools/llvm-profgen/fname-canonicalization.test index 9fbf41abf0a8..5e7ec51e665a 100644 --- a/llvm/test/tools/llvm-profgen/fname-canonicalization.test +++ b/llvm/test/tools/llvm-profgen/fname-canonicalization.test @@ -22,8 +22,6 @@ ; CHECK-PROBE-FNAME: !CFGChecksum: 563088904013236 ; CHECK-PROBE-FNAME:[main:2 @ foo:8 @ _ZL3barii.__uniq.26267048767521081047744692097241227776]:30:15 ; CHECK-PROBE-FNAME: 1: 15 -; CHECK-PROBE-FNAME: 2: 18446744073709551615 -; CHECK-PROBE-FNAME: 3: 18446744073709551615 ; CHECK-PROBE-FNAME: 4: 15 ; CHECK-PROBE-FNAME: !CFGChecksum: 72617220756 diff --git a/llvm/test/tools/llvm-profgen/inline-cs-dangling-pseudoprobe.test b/llvm/test/tools/llvm-profgen/inline-cs-dangling-pseudoprobe.test index 0ac51c1ad37b..801de3ba40de 100644 --- a/llvm/test/tools/llvm-profgen/inline-cs-dangling-pseudoprobe.test +++ b/llvm/test/tools/llvm-profgen/inline-cs-dangling-pseudoprobe.test @@ -2,14 +2,17 @@ ; RUN: FileCheck %s --input-file %t ; CHECK: [main:2 @ foo]:58:0 +; CHECK-NEXT: 1: 0 ; CHECK-NEXT: 2: 15 ; CHECK-NEXT: 3: 14 +; CHECK-NEXT: 4: 0 ; CHECK-NEXT: 5: 14 ; CHECK-NEXT: 6: 15 +; CHECK-NEXT: 7: 0 +; CHECK-NEXT: 9: 0 ; CHECK-NEXT: !CFGChecksum: 138950591924 ; CHECK:[main:2 @ foo:8 @ bar]:1:0 -; CHECK-NEXT: 2: 18446744073709551615 -; CHECK-NEXT: 3: 18446744073709551615 +; CHECK-NEXT: 1: 0 ; CHECK-NEXT: 4: 1 ; CHECK-NEXT: !CFGChecksum: 72617220756 diff --git a/llvm/test/tools/llvm-profgen/inline-cs-pseudoprobe.test b/llvm/test/tools/llvm-profgen/inline-cs-pseudoprobe.test index d1d6a9caf380..2d23ff487a34 100644 --- a/llvm/test/tools/llvm-profgen/inline-cs-pseudoprobe.test +++ b/llvm/test/tools/llvm-profgen/inline-cs-pseudoprobe.test @@ -2,17 +2,18 @@ ; RUN: FileCheck %s --input-file %t ; CHECK: [main:2 @ foo]:74:0 +; CHECK-NEXT: 1: 0 ; CHECK-NEXT: 2: 15 ; CHECK-NEXT: 3: 15 ; CHECK-NEXT: 4: 14 ; CHECK-NEXT: 5: 1 ; CHECK-NEXT: 6: 15 +; CHECK-NEXT: 7: 0 ; CHECK-NEXT: 8: 14 bar:14 +; CHECK-NEXT: 9: 0 ; CHECK-NEXT: !CFGChecksum: 138950591924 ; CHECK:[main:2 @ foo:8 @ bar]:28:14 ; CHECK-NEXT: 1: 14 -; CHECK-NEXT: 2: 18446744073709551615 -; CHECK-NEXT: 3: 18446744073709551615 ; CHECK-NEXT: 4: 14 ; CHECK-NEXT: !CFGChecksum: 72617220756 diff --git a/llvm/test/tools/llvm-profgen/merge-cold-profile.test b/llvm/test/tools/llvm-profgen/merge-cold-profile.test index 3d749db1ce32..7e975a9045e9 100644 --- a/llvm/test/tools/llvm-profgen/merge-cold-profile.test +++ b/llvm/test/tools/llvm-profgen/merge-cold-profile.test @@ -16,10 +16,10 @@ ; CHECK: [fa]:14:4 ; CHECK-NEXT: 1: 4 -; CHECK-NEXT: 2: 18446744073709551615 ; CHECK-NEXT: 3: 4 ; CHECK-NEXT: 4: 2 ; CHECK-NEXT: 5: 1 +; CHECK-NEXT: 6: 0 ; CHECK-NEXT: 7: 2 fb:2 ; CHECK-NEXT: 8: 1 fa:1 ; CHECK-NEXT: !CFGChecksum: 120515930909 @@ -28,6 +28,7 @@ ; CHECK-NEXT: 1: 4 ; CHECK-NEXT: 2: 3 ; CHECK-NEXT: 3: 1 +; CHECK-NEXT: 4: 0 ; CHECK-NEXT: 5: 4 fb:4 ; CHECK-NEXT: 6: 1 fa:1 ; CHECK-NEXT: !CFGChecksum: 72617220756 @@ -36,16 +37,17 @@ ; CHECK-KEEP-COLD-NEXT: 1: 6 ; CHECK-KEEP-COLD-NEXT: 2: 3 ; CHECK-KEEP-COLD-NEXT: 3: 3 +; CHECK-KEEP-COLD-NEXT: 4: 0 ; CHECK-KEEP-COLD-NEXT: 5: 4 fb:4 ; CHECK-KEEP-COLD-NEXT: 6: 3 fa:3 ; CHECK-KEEP-COLD-NEXT: !CFGChecksum: 72617220756 ; CHECK-KEEP-COLD-NEXT: !Attributes: 0 ; CHECK-KEEP-COLD-NEXT:[fa]:14:4 ; CHECK-KEEP-COLD-NEXT: 1: 4 -; CHECK-KEEP-COLD-NEXT: 2: 18446744073709551615 ; CHECK-KEEP-COLD-NEXT: 3: 4 ; CHECK-KEEP-COLD-NEXT: 4: 2 ; CHECK-KEEP-COLD-NEXT: 5: 1 +; CHECK-KEEP-COLD-NEXT: 6: 0 ; CHECK-KEEP-COLD-NEXT: 7: 2 fb:2 ; CHECK-KEEP-COLD-NEXT: 8: 1 fa:1 ; CHECK-KEEP-COLD-NEXT: !CFGChecksum: 120515930909 @@ -54,6 +56,7 @@ ; CHECK-UNMERGED-NEXT: 1: 4 ; CHECK-UNMERGED-NEXT: 2: 3 ; CHECK-UNMERGED-NEXT: 3: 1 +; CHECK-UNMERGED-NEXT: 4: 0 ; CHECK-UNMERGED-NEXT: 5: 4 fb:4 ; CHECK-UNMERGED-NEXT: 6: 1 fa:1 ; CHECK-UNMERGED-NEXT: !CFGChecksum: 72617220756 @@ -64,32 +67,38 @@ ; CHECK-COLD-CONTEXT-LENGTH-NEXT: 1: 4 ; CHECK-COLD-CONTEXT-LENGTH-NEXT: 2: 3 ; CHECK-COLD-CONTEXT-LENGTH-NEXT: 3: 1 +; CHECK-COLD-CONTEXT-LENGTH-NEXT: 4: 0 ; CHECK-COLD-CONTEXT-LENGTH-NEXT: 5: 4 fb:4 ; CHECK-COLD-CONTEXT-LENGTH-NEXT: 6: 1 fa:1 ; CHECK-COLD-CONTEXT-LENGTH-NEXT: !CFGChecksum: 72617220756 ; CHECK-COLD-CONTEXT-LENGTH-NEXT: !Attributes: 0 ; CHECK-COLD-CONTEXT-LENGTH-NEXT:[fb:6 @ fa]:10:3 ; CHECK-COLD-CONTEXT-LENGTH-NEXT: 1: 3 -; CHECK-COLD-CONTEXT-LENGTH-NEXT: 2: 18446744073709551615 ; CHECK-COLD-CONTEXT-LENGTH-NEXT: 3: 3 ; CHECK-COLD-CONTEXT-LENGTH-NEXT: 4: 1 ; CHECK-COLD-CONTEXT-LENGTH-NEXT: 5: 1 +; CHECK-COLD-CONTEXT-LENGTH-NEXT: 6: 0 ; CHECK-COLD-CONTEXT-LENGTH-NEXT: 7: 1 fb:1 ; CHECK-COLD-CONTEXT-LENGTH-NEXT: 8: 1 fa:1 ; CHECK-COLD-CONTEXT-LENGTH-NEXT: !CFGChecksum: 120515930909 ; CHECK-COLD-CONTEXT-LENGTH-NEXT: !Attributes: 0 ; CHECK-COLD-CONTEXT-LENGTH-NEXT:[fa:7 @ fb]:6:2 ; CHECK-COLD-CONTEXT-LENGTH-NEXT: 1: 2 +; CHECK-COLD-CONTEXT-LENGTH-NEXT: 2: 0 ; CHECK-COLD-CONTEXT-LENGTH-NEXT: 3: 2 +; CHECK-COLD-CONTEXT-LENGTH-NEXT: 4: 0 +; CHECK-COLD-CONTEXT-LENGTH-NEXT: 5: 0 ; CHECK-COLD-CONTEXT-LENGTH-NEXT: 6: 2 fa:2 ; CHECK-COLD-CONTEXT-LENGTH-NEXT: !CFGChecksum: 72617220756 ; CHECK-COLD-CONTEXT-LENGTH-NEXT: !Attributes: 0 ; CHECK-COLD-CONTEXT-LENGTH-NEXT:[fa:8 @ fa]:4:1 ; CHECK-COLD-CONTEXT-LENGTH-NEXT: 1: 1 -; CHECK-COLD-CONTEXT-LENGTH-NEXT: 2: 18446744073709551615 ; CHECK-COLD-CONTEXT-LENGTH-NEXT: 3: 1 ; CHECK-COLD-CONTEXT-LENGTH-NEXT: 4: 1 +; CHECK-COLD-CONTEXT-LENGTH-NEXT: 5: 0 +; CHECK-COLD-CONTEXT-LENGTH-NEXT: 6: 0 ; CHECK-COLD-CONTEXT-LENGTH-NEXT: 7: 1 fb:1 +; CHECK-COLD-CONTEXT-LENGTH-NEXT: 8: 0 ; CHECK-COLD-CONTEXT-LENGTH-NEXT: !CFGChecksum: 120515930909 ; CHECK-COLD-CONTEXT-LENGTH-NEXT: !Attributes: 0 diff --git a/llvm/test/tools/llvm-profgen/noinline-cs-pseudoprobe.test b/llvm/test/tools/llvm-profgen/noinline-cs-pseudoprobe.test index 8eda5d55ffe8..7dc968e8a39c 100644 --- a/llvm/test/tools/llvm-profgen/noinline-cs-pseudoprobe.test +++ b/llvm/test/tools/llvm-profgen/noinline-cs-pseudoprobe.test @@ -2,16 +2,18 @@ ; RUN: FileCheck %s --input-file %t ; CHECK: [main:2 @ foo]:75:0 +; CHECK-NEXT: 1: 0 ; CHECK-NEXT: 2: 15 ; CHECK-NEXT: 3: 15 ; CHECK-NEXT: 4: 15 +; CHECK-NEXT: 5: 0 ; CHECK-NEXT: 6: 15 +; CHECK-NEXT: 7: 0 ; CHECK-NEXT: 8: 15 bar:15 +; CHECK-NEXT: 9: 0 ; CHECK-NEXT: !CFGChecksum: 138950591924 ; CHECK:[main:2 @ foo:8 @ bar]:30:15 ; CHECK-NEXT: 1: 15 -; CHECK-NEXT: 2: 18446744073709551615 -; CHECK-NEXT: 3: 18446744073709551615 ; CHECK-NEXT: 4: 15 ; CHECK-NEXT: !CFGChecksum: 72617220756 diff --git a/llvm/test/tools/llvm-profgen/truncated-pseudoprobe.test b/llvm/test/tools/llvm-profgen/truncated-pseudoprobe.test index c29e2ad4ae7e..b46479e10e5a 100644 --- a/llvm/test/tools/llvm-profgen/truncated-pseudoprobe.test +++ b/llvm/test/tools/llvm-profgen/truncated-pseudoprobe.test @@ -2,17 +2,19 @@ ; RUN: FileCheck %s --input-file %t ; CHECK: [foo]:75:0 +; CHECK-NEXT: 1: 0 ; CHECK-NEXT: 2: 15 ; CHECK-NEXT: 3: 15 ; CHECK-NEXT: 4: 15 +; CHECK-NEXT: 5: 0 ; CHECK-NEXT: 6: 15 +; CHECK-NEXT: 7: 0 ; CHECK-NEXT: 8: 15 bar:15 +; CHECK-NEXT: 9: 0 ; CHECK-NEXT: !CFGChecksum: 563088904013236 ; CHECK-NEXT: !Attributes: 0 ; CHECK: [foo:8 @ bar]:30:15 ; CHECK-NEXT: 1: 15 -; CHECK-NEXT: 2: 18446744073709551615 -; CHECK-NEXT: 3: 18446744073709551615 ; CHECK-NEXT: 4: 15 ; CHECK-NEXT: !CFGChecksum: 72617220756 ; CHECK-NEXT: !Attributes: 1 diff --git a/llvm/tools/llvm-profgen/ProfileGenerator.cpp b/llvm/tools/llvm-profgen/ProfileGenerator.cpp index c2d1753d78f1..0528a77fcc5d 100644 --- a/llvm/tools/llvm-profgen/ProfileGenerator.cpp +++ b/llvm/tools/llvm-profgen/ProfileGenerator.cpp @@ -555,19 +555,14 @@ void PseudoProbeCSProfileGenerator::populateBodySamplesWithProbes( } } - // Report dangling probes for frames that have real samples collected. - // Dangling probes are the probes associated to an empty block. With this - // place holder, sample count on a dangling probe will not be trusted by the - // compiler and we will rely on the counts inference algorithm to get the - // probe a reasonable count. Use InvalidProbeCount to mark sample count for - // a dangling probe. + // Assign zero count for remaining probes without sample hits to + // differentiate from probes optimized away, of which the counts are unknown + // and will be inferred by the compiler. for (auto &I : FrameSamples) { auto *FunctionProfile = I.second; for (auto *Probe : I.first->getProbes()) { - if (Probe->isDangling()) { - FunctionProfile->addBodySamplesForProbe( - Probe->Index, FunctionSamples::InvalidProbeCount); - } + if (!Probe->isDangling()) + FunctionProfile->addBodySamplesForProbe(Probe->Index, 0); } } }