[llvm] [MergeFunctions] Preserve entry counts on folds (PR #202218)

Mon Jun 29 20:58:16 PDT 2026

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `release-noassertions-warnings` running on `google-integrate-b2` while building `llvm` at step 6 "build-default".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/228/builds/3321

<details>
<summary>Here is the relevant piece of the build log for the reference</summary>

```
Step 6 (build-default) failure: cmake (failure)
...
127.317 [7189/34/1397] Building CXX object lib/Transforms/IPO/CMakeFiles/LLVMipo.dir/CalledValuePropagation.cpp.o
127.320 [7188/34/1398] Building CXX object lib/Transforms/IPO/CMakeFiles/LLVMipo.dir/GlobalSplit.cpp.o
127.623 [7187/34/1399] Building CXX object lib/Transforms/IPO/CMakeFiles/LLVMipo.dir/ExpandVariadics.cpp.o
127.796 [7186/34/1400] Building CXX object lib/Transforms/IPO/CMakeFiles/LLVMipo.dir/InferFunctionAttrs.cpp.o
128.002 [7185/34/1401] Building CXX object lib/Transforms/Scalar/CMakeFiles/LLVMScalarOpts.dir/Scalarizer.cpp.o
128.471 [7184/34/1402] Building CXX object lib/Transforms/Scalar/CMakeFiles/LLVMScalarOpts.dir/StraightLineStrengthReduce.cpp.o
128.779 [7183/34/1403] Building CXX object lib/Transforms/IPO/CMakeFiles/LLVMipo.dir/LoopExtractor.cpp.o
128.790 [7182/34/1404] Building CXX object lib/Transforms/Scalar/CMakeFiles/LLVMScalarOpts.dir/Reassociate.cpp.o
128.950 [7181/34/1405] Building CXX object lib/Transforms/IPO/CMakeFiles/LLVMipo.dir/DeadArgumentElimination.cpp.o
129.185 [7180/34/1406] Building CXX object lib/Transforms/IPO/CMakeFiles/LLVMipo.dir/MergeFunctions.cpp.o
FAILED: lib/Transforms/IPO/CMakeFiles/LLVMipo.dir/MergeFunctions.cpp.o 
CCACHE_CPP2=yes CCACHE_HASHDIR=yes CCACHE_SLOPPINESS=pch_defines,time_macros /usr/bin/ccache /usr/bin/c++ -D_GLIBCXX_USE_CXX11_ABI=1 -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -I/b/release-noassertions-warnings-build/build/lib/Transforms/IPO -I/b/release-noassertions-warnings-build/llvm-project/llvm/lib/Transforms/IPO -I/b/release-noassertions-warnings-build/build/include -I/b/release-noassertions-warnings-build/llvm-project/llvm/include -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -Werror -Werror=date-time -Werror=unguarded-availability-new -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers -pedantic -Wno-long-long -Wc++98-compat-extra-semi -Wimplicit-fallthrough -Wcovered-switch-default -Wno-noexcept-type -Wnon-virtual-dtor -Wdelete-non-virtual-dtor -Wsuggest-override -Wstring-conversion -Wno-pass-failed -Wmisleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -ffunction-sections -fdata-sections -Xclang -fno-pch-timestamp -O3 -DNDEBUG -std=c++17 -fno-exceptions -funwind-tables -fno-rtti -Winvalid-pch -Xclang -include-pch -Xclang /b/release-noassertions-warnings-build/build/lib/IR/CMakeFiles/LLVMCore.dir/cmake_pch.hxx.pch -Xclang -include -Xclang /b/release-noassertions-warnings-build/build/lib/IR/CMakeFiles/LLVMCore.dir/cmake_pch.hxx -MD -MT lib/Transforms/IPO/CMakeFiles/LLVMipo.dir/MergeFunctions.cpp.o -MF lib/Transforms/IPO/CMakeFiles/LLVMipo.dir/MergeFunctions.cpp.o.d -o lib/Transforms/IPO/CMakeFiles/LLVMipo.dir/MergeFunctions.cpp.o -c /b/release-noassertions-warnings-build/llvm-project/llvm/lib/Transforms/IPO/MergeFunctions.cpp
/b/release-noassertions-warnings-build/llvm-project/llvm/lib/Transforms/IPO/MergeFunctions.cpp:737:27: error: no member named 'ProfileCount' in 'llvm::Function'
  737 |   std::optional<Function::ProfileCount> GEC = G->getEntryCount();
      |                           ^~~~~~~~~~~~
/b/release-noassertions-warnings-build/llvm-project/llvm/lib/Transforms/IPO/MergeFunctions.cpp:883:58: error: no member named 'ProfileCount' in 'llvm::Function'
  883 |                                  std::optional<Function::ProfileCount> FC,
      |                                                          ^~~~~~~~~~~~
/b/release-noassertions-warnings-build/llvm-project/llvm/lib/Transforms/IPO/MergeFunctions.cpp:884:58: error: no member named 'ProfileCount' in 'llvm::Function'
  884 |                                  std::optional<Function::ProfileCount> GC) {
      |                                                          ^~~~~~~~~~~~
/b/release-noassertions-warnings-build/llvm-project/llvm/lib/Transforms/IPO/MergeFunctions.cpp:895:27: error: no member named 'ProfileCount' in 'llvm::Function'
  895 |   std::optional<Function::ProfileCount> FEC = F->getEntryCount();
      |                           ^~~~~~~~~~~~
/b/release-noassertions-warnings-build/llvm-project/llvm/lib/Transforms/IPO/MergeFunctions.cpp:896:27: error: no member named 'ProfileCount' in 'llvm::Function'
  896 |   std::optional<Function::ProfileCount> GEC = G->getEntryCount();
      |                           ^~~~~~~~~~~~
5 errors generated.
129.332 [7180/33/1407] Building CXX object lib/Transforms/IPO/CMakeFiles/LLVMipo.dir/InstrumentorStubPrinter.cpp.o
129.354 [7180/32/1408] Building CXX object lib/Transforms/IPO/CMakeFiles/LLVMipo.dir/GlobalDCE.cpp.o
129.497 [7180/31/1409] Building CXX object lib/Transforms/IPO/CMakeFiles/LLVMipo.dir/InstrumentorUtils.cpp.o
129.543 [7180/30/1410] Building CXX object lib/Transforms/IPO/CMakeFiles/LLVMipo.dir/Internalize.cpp.o
129.699 [7180/29/1411] Building CXX object lib/Transforms/IPO/CMakeFiles/LLVMipo.dir/InstrumentorConfigFile.cpp.o
129.734 [7180/28/1412] Building CXX object lib/Transforms/IPO/CMakeFiles/LLVMipo.dir/ArgumentPromotion.cpp.o
130.505 [7180/27/1413] Building CXX object lib/Transforms/IPO/CMakeFiles/LLVMipo.dir/HotColdSplitting.cpp.o
130.685 [7180/26/1414] Building CXX object lib/Transforms/IPO/CMakeFiles/LLVMipo.dir/FunctionSpecialization.cpp.o
130.803 [7180/25/1415] Building CXX object lib/Transforms/Scalar/CMakeFiles/LLVMScalarOpts.dir/RewriteStatepointsForGC.cpp.o
130.974 [7180/24/1416] Building CXX object lib/Transforms/IPO/CMakeFiles/LLVMipo.dir/ModuleInliner.cpp.o
130.988 [7180/23/1417] Building CXX object lib/Transforms/Scalar/CMakeFiles/LLVMScalarOpts.dir/StructurizeCFG.cpp.o
131.607 [7180/22/1418] Building CXX object lib/Transforms/Scalar/CMakeFiles/LLVMScalarOpts.dir/LowerMatrixIntrinsics.cpp.o
131.752 [7180/21/1419] Building CXX object lib/Transforms/IPO/CMakeFiles/LLVMipo.dir/Inliner.cpp.o
131.799 [7180/20/1420] Building CXX object lib/Transforms/IPO/CMakeFiles/LLVMipo.dir/SampleContextTracker.cpp.o
132.611 [7180/19/1421] Building CXX object lib/Transforms/IPO/CMakeFiles/LLVMipo.dir/SCCP.cpp.o
133.256 [7180/18/1422] Building CXX object lib/Transforms/IPO/CMakeFiles/LLVMipo.dir/SampleProfileProbe.cpp.o
133.266 [7180/17/1423] Building CXX object lib/Transforms/IPO/CMakeFiles/LLVMipo.dir/FunctionAttrs.cpp.o
133.295 [7180/16/1424] Building CXX object lib/Transforms/IPO/CMakeFiles/LLVMipo.dir/PartialInlining.cpp.o
133.449 [7180/15/1425] Building CXX object lib/Transforms/IPO/CMakeFiles/LLVMipo.dir/FunctionImport.cpp.o
133.811 [7180/14/1426] Building CXX object lib/Transforms/IPO/CMakeFiles/LLVMipo.dir/GlobalOpt.cpp.o
133.863 [7180/13/1427] Building CXX object lib/Transforms/Scalar/CMakeFiles/LLVMScalarOpts.dir/NewGVN.cpp.o

```

</details>

https://github.com/llvm/llvm-project/pull/202218