forked from OSchip/llvm-project
[PGO] Adjust -vp-counters-per-site under dynamic linking.
Addressing clang bootstrap under the dynamic linking mode running out of static allocation of value profile nodes, reported in D81682. Differential Revision: https://reviews.llvm.org/D92669
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llvm/cmake/modules
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@ -917,6 +917,15 @@ if (LLVM_BUILD_INSTRUMENTED)
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CMAKE_EXE_LINKER_FLAGS
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CMAKE_SHARED_LINKER_FLAGS)
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endif()
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# Set this to avoid running out of the value profile node section
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# under clang in dynamic linking mode.
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if (CMAKE_CXX_COMPILER_ID MATCHES "Clang" AND
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CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL 11 AND
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LLVM_LINK_LLVM_DYLIB)
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append("-Xclang -mllvm -Xclang -vp-counters-per-site=1.5"
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CMAKE_CXX_FLAGS
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CMAKE_C_FLAGS)
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endif()
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elseif(uppercase_LLVM_BUILD_INSTRUMENTED STREQUAL "CSIR")
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append("-fcs-profile-generate=\"${LLVM_CSPROFILE_DATA_DIR}\""
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CMAKE_CXX_FLAGS
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