================
@@ -26,9 +30,23 @@ if(LLVM_BUILD_INSTRUMENTED)
message(STATUS "To enable merging PGO data LLVM_PROFDATA has to point to
llvm-profdata")
else()
add_custom_target(generate-profdata
- COMMAND "${Python3_EXECUTABLE}"
${CMAKE_CURRENT_SOURCE_DIR}/perf-helper.py merge ${LLVM_PROFDATA}
${CMAKE_CURRENT_BINARY_DIR}/clang.profdata ${CMAKE_CURRENT_BINARY_DIR}
+ COMMAND "${Python3_EXECUTABLE}"
${CMAKE_CURRENT_SOURCE_DIR}/perf-helper.py merge ${LLVM_PROFDATA}
${CMAKE_CURRENT_BINARY_DIR}/clang.profdata ${CMAKE_CURRENT_BINARY_DIR}
${CMAKE_BINARY_DIR}/profiles/
COMMENT "Merging profdata"
DEPENDS generate-profraw)
+ if (CLANG_PGO_TRAINING_DATA_SOURCE_DIR)
+ llvm_ExternalProject_Add(generate-profraw-external
${CLANG_PGO_TRAINING_DATA_SOURCE_DIR}
+ USE_TOOLCHAIN EXLUDE_FROM_ALL NO_INSTALL DEPENDS
generate-profraw)
+ add_dependencies(generate-profdata generate-profraw-external)
+ else()
+ # Default to compiling a file from clang. This also builds all the
+ # dependencies needed to build this file, like TableGen.
+ set(generate_profraw_clang_sema
tools/clang/lib/Sema/CMakeFiles/obj.clangSema.dir/Sema.cpp.o)
+ llvm_ExternalProject_Add(generate-profraw-clang
${CMAKE_CURRENT_SOURCE_DIR}/../../../llvm
+ USE_TOOLCHAIN EXLUDE_FROM_ALL NO_INSTALL DEPENDS generate-profraw
+ EXTRA_TARGETS generate_profraw_clang_sema
----------------
kwk wrote:
> The idea I'd like explore is using libc++ (and perhaps also libc) test suite
> for training. It consists of self-contained test programs which should
> sufficiently exercise various aspects of C/C++ frontend.
@petrhosek are you suggesting to use libc++ from in-tree or from a fixed and
already released version as @llvm-beanz has suggested
[here](https://github.com/llvm/llvm-project/pull/77347#discussion_r1450669301)?
He hasn't suggested to use libc++ but a recent LLVM release.
https://github.com/llvm/llvm-project/pull/77347
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