[clang] [flang] [llvm] Add IR Profile-Guided Optimization (IR PGO) support to the Flang compiler (PR #136098)

Fri May 30 07:21:25 PDT 2025

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `amdgpu-offload-ubuntu-22-cmake-build-only` running on `rocm-docker-ubu-22` while building `clang,flang,llvm` at step 4 "annotate".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/203/builds/12089

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

```
Step 4 (annotate) failure: '../llvm-zorg/zorg/buildbot/builders/annotated/amdgpu-offload-cmake.py --jobs=32' (failure)
...
[4788/7836] Linking CXX shared library lib/libMLIRNVGPUDialect.so.21.0git
[4789/7836] Linking CXX shared library lib/libMLIRShardingInterface.so.21.0git
[4790/7836] Linking CXX shared library lib/libMLIRArithToEmitC.so.21.0git
[4791/7836] Linking CXX shared library lib/libLLVMIRPrinter.so.21.0git
[4792/7836] Linking CXX shared library lib/libMLIRBufferizationDialect.so.21.0git
[4793/7836] Linking CXX shared library lib/libLLVMFrontendAtomic.so.21.0git
[4794/7836] Creating library symlink lib/libMLIRArithToEmitC.so
[4795/7836] Creating library symlink lib/libLLVMIRPrinter.so
[4796/7836] Creating library symlink lib/libLLVMFrontendAtomic.so
[4797/7836] Linking CXX shared library lib/libLLVMFrontendDriver.so.21.0git
FAILED: lib/libLLVMFrontendDriver.so.21.0git 
: && /usr/bin/c++ -fPIC -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -Werror=date-time -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wno-missing-field-initializers -pedantic -Wno-long-long -Wimplicit-fallthrough -Wno-uninitialized -Wno-nonnull -Wno-class-memaccess -Wno-redundant-move -Wno-pessimizing-move -Wno-noexcept-type -Wdelete-non-virtual-dtor -Wsuggest-override -Wno-comment -Wno-misleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -ffunction-sections -fdata-sections -O3 -DNDEBUG  -Wl,-z,defs -Wl,-z,nodelete   -Wl,-rpath-link,/home/botworker/bbot/amdgpu-offload-ubuntu-22-cmake-build-only/build/./lib  -Wl,--gc-sections -shared -Wl,-soname,libLLVMFrontendDriver.so.21.0git -o lib/libLLVMFrontendDriver.so.21.0git lib/Frontend/Driver/CMakeFiles/LLVMFrontendDriver.dir/CodeGenOptions.cpp.o  -Wl,-rpath,"\$ORIGIN/../lib:/home/botworker/bbot/amdgpu-offload-ubuntu-22-cmake-build-only/build/lib:"  lib/libLLVMAnalysis.so.21.0git  lib/libLLVMCore.so.21.0git  lib/libLLVMSupport.so.21.0git  -Wl,-rpath-link,/home/botworker/bbot/amdgpu-offload-ubuntu-22-cmake-build-only/build/lib && :
/usr/bin/ld: lib/Frontend/Driver/CMakeFiles/LLVMFrontendDriver.dir/CodeGenOptions.cpp.o: in function `llvm::driver::getDefaultProfileGenName[abi:cxx11]()':
CodeGenOptions.cpp:(.text._ZN4llvm6driver24getDefaultProfileGenNameB5cxx11Ev+0x7): undefined reference to `llvm::DebugInfoCorrelate'
/usr/bin/ld: CodeGenOptions.cpp:(.text._ZN4llvm6driver24getDefaultProfileGenNameB5cxx11Ev+0x25): undefined reference to `llvm::ProfileCorrelate'
collect2: error: ld returned 1 exit status
[4798/7836] Creating library symlink lib/libMLIRTensorUtils.so
[4799/7836] Creating library symlink lib/libMLIRBufferizationDialect.so
[4800/7836] Creating library symlink lib/libMLIRShardingInterface.so
[4801/7836] Linking CXX shared library lib/libLLVMBitWriter.so.21.0git
[4802/7836] Linking CXX shared library lib/libMLIRSCFDialect.so.21.0git
[4803/7836] Linking CXX shared library lib/libLLVMTarget.so.21.0git
[4804/7836] Building CXX object tools/mlir/test/lib/Dialect/TestIRDLToCpp/CMakeFiles/MLIRTestIRDLToCppDialect.dir/TestIRDLToCppDialect.cpp.o
In file included from /usr/include/c++/11/cassert:44,
                 from /home/botworker/bbot/amdgpu-offload-ubuntu-22-cmake-build-only/llvm-project/llvm/include/llvm/IR/ProfileSummary.h:17,
                 from /home/botworker/bbot/amdgpu-offload-ubuntu-22-cmake-build-only/llvm-project/llvm/include/llvm/IR/Module.h:30,
                 from /home/botworker/bbot/amdgpu-offload-ubuntu-22-cmake-build-only/llvm-project/mlir/include/mlir/Dialect/LLVMIR/LLVMDialect.h:38,
                 from /home/botworker/bbot/amdgpu-offload-ubuntu-22-cmake-build-only/llvm-project/mlir/include/mlir/Target/LLVMIR/LLVMTranslationInterface.h:16,
                 from /home/botworker/bbot/amdgpu-offload-ubuntu-22-cmake-build-only/llvm-project/mlir/test/lib/Dialect/TestIRDLToCpp/TestIRDLToCppDialect.cpp:22:
/home/botworker/bbot/amdgpu-offload-ubuntu-22-cmake-build-only/build/tools/mlir/test/lib/Dialect/TestIRDLToCpp/test_irdl_to_cpp.irdl.mlir.cpp.inc: In static member function ‘static llvm::StringRef mlir::test_irdl_to_cpp::BarOp::getOperandName(unsigned int)’:
/home/botworker/bbot/amdgpu-offload-ubuntu-22-cmake-build-only/build/tools/mlir/test/lib/Dialect/TestIRDLToCpp/test_irdl_to_cpp.irdl.mlir.cpp.inc:223:18: warning: comparison of unsigned expression in ‘< 0’ is always false [-Wtype-limits]
  223 |     assert(index < 0 && "invalid attribute index");
      |            ~~~~~~^~~
[4805/7836] Linking CXX shared library lib/libMLIRShapeDialect.so.21.0git
[4806/7836] Linking CXX shared library lib/libLLVMSandboxIR.so.21.0git
[4807/7836] Linking CXX shared library lib/libLLVMTransformUtils.so.21.0git
[4808/7836] Building AMDGPUGenPostLegalizeGICombiner.inc...
[4809/7836] Building CXX object tools/clang/lib/Lex/CMakeFiles/obj.clangLex.dir/LiteralSupport.cpp.o
[4810/7836] Building AMDGPUGenDisassemblerTables.inc...
[4811/7836] Building AMDGPUGenRegBankGICombiner.inc...
[4812/7836] Building AMDGPUGenPreLegalizeGICombiner.inc...
[4813/7836] Building AMDGPUGenMCCodeEmitter.inc...
[4814/7836] Linking CXX shared library lib/libMLIRSPIRVDialect.so.21.0git
[4815/7836] Building AMDGPUGenSubtargetInfo.inc...
[4816/7836] Building CXX object tools/clang/lib/Frontend/Rewrite/CMakeFiles/obj.clangRewriteFrontend.dir/RewriteModernObjC.cpp.o
[4817/7836] Building AMDGPUGenSearchableTables.inc...
[4818/7836] Building CXX object tools/clang/lib/Interpreter/CMakeFiles/obj.clangInterpreter.dir/DeviceOffload.cpp.o
[4819/7836] Building AMDGPUGenCallingConv.inc...
[4820/7836] Building CXX object tools/clang/lib/Tooling/CMakeFiles/obj.clangTooling.dir/GuessTargetAndModeCompilationDatabase.cpp.o
Step 7 (build cmake config) failure: build cmake config (failure)
...
[4788/7836] Linking CXX shared library lib/libMLIRNVGPUDialect.so.21.0git
[4789/7836] Linking CXX shared library lib/libMLIRShardingInterface.so.21.0git
[4790/7836] Linking CXX shared library lib/libMLIRArithToEmitC.so.21.0git
[4791/7836] Linking CXX shared library lib/libLLVMIRPrinter.so.21.0git
[4792/7836] Linking CXX shared library lib/libMLIRBufferizationDialect.so.21.0git
[4793/7836] Linking CXX shared library lib/libLLVMFrontendAtomic.so.21.0git
[4794/7836] Creating library symlink lib/libMLIRArithToEmitC.so
[4795/7836] Creating library symlink lib/libLLVMIRPrinter.so
[4796/7836] Creating library symlink lib/libLLVMFrontendAtomic.so
[4797/7836] Linking CXX shared library lib/libLLVMFrontendDriver.so.21.0git
FAILED: lib/libLLVMFrontendDriver.so.21.0git 
: && /usr/bin/c++ -fPIC -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -Werror=date-time -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wno-missing-field-initializers -pedantic -Wno-long-long -Wimplicit-fallthrough -Wno-uninitialized -Wno-nonnull -Wno-class-memaccess -Wno-redundant-move -Wno-pessimizing-move -Wno-noexcept-type -Wdelete-non-virtual-dtor -Wsuggest-override -Wno-comment -Wno-misleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -ffunction-sections -fdata-sections -O3 -DNDEBUG  -Wl,-z,defs -Wl,-z,nodelete   -Wl,-rpath-link,/home/botworker/bbot/amdgpu-offload-ubuntu-22-cmake-build-only/build/./lib  -Wl,--gc-sections -shared -Wl,-soname,libLLVMFrontendDriver.so.21.0git -o lib/libLLVMFrontendDriver.so.21.0git lib/Frontend/Driver/CMakeFiles/LLVMFrontendDriver.dir/CodeGenOptions.cpp.o  -Wl,-rpath,"\$ORIGIN/../lib:/home/botworker/bbot/amdgpu-offload-ubuntu-22-cmake-build-only/build/lib:"  lib/libLLVMAnalysis.so.21.0git  lib/libLLVMCore.so.21.0git  lib/libLLVMSupport.so.21.0git  -Wl,-rpath-link,/home/botworker/bbot/amdgpu-offload-ubuntu-22-cmake-build-only/build/lib && :
/usr/bin/ld: lib/Frontend/Driver/CMakeFiles/LLVMFrontendDriver.dir/CodeGenOptions.cpp.o: in function `llvm::driver::getDefaultProfileGenName[abi:cxx11]()':
CodeGenOptions.cpp:(.text._ZN4llvm6driver24getDefaultProfileGenNameB5cxx11Ev+0x7): undefined reference to `llvm::DebugInfoCorrelate'
/usr/bin/ld: CodeGenOptions.cpp:(.text._ZN4llvm6driver24getDefaultProfileGenNameB5cxx11Ev+0x25): undefined reference to `llvm::ProfileCorrelate'
collect2: error: ld returned 1 exit status
[4798/7836] Creating library symlink lib/libMLIRTensorUtils.so
[4799/7836] Creating library symlink lib/libMLIRBufferizationDialect.so
[4800/7836] Creating library symlink lib/libMLIRShardingInterface.so
[4801/7836] Linking CXX shared library lib/libLLVMBitWriter.so.21.0git
[4802/7836] Linking CXX shared library lib/libMLIRSCFDialect.so.21.0git
[4803/7836] Linking CXX shared library lib/libLLVMTarget.so.21.0git
[4804/7836] Building CXX object tools/mlir/test/lib/Dialect/TestIRDLToCpp/CMakeFiles/MLIRTestIRDLToCppDialect.dir/TestIRDLToCppDialect.cpp.o
In file included from /usr/include/c++/11/cassert:44,
                 from /home/botworker/bbot/amdgpu-offload-ubuntu-22-cmake-build-only/llvm-project/llvm/include/llvm/IR/ProfileSummary.h:17,
                 from /home/botworker/bbot/amdgpu-offload-ubuntu-22-cmake-build-only/llvm-project/llvm/include/llvm/IR/Module.h:30,
                 from /home/botworker/bbot/amdgpu-offload-ubuntu-22-cmake-build-only/llvm-project/mlir/include/mlir/Dialect/LLVMIR/LLVMDialect.h:38,
                 from /home/botworker/bbot/amdgpu-offload-ubuntu-22-cmake-build-only/llvm-project/mlir/include/mlir/Target/LLVMIR/LLVMTranslationInterface.h:16,
                 from /home/botworker/bbot/amdgpu-offload-ubuntu-22-cmake-build-only/llvm-project/mlir/test/lib/Dialect/TestIRDLToCpp/TestIRDLToCppDialect.cpp:22:
/home/botworker/bbot/amdgpu-offload-ubuntu-22-cmake-build-only/build/tools/mlir/test/lib/Dialect/TestIRDLToCpp/test_irdl_to_cpp.irdl.mlir.cpp.inc: In static member function ‘static llvm::StringRef mlir::test_irdl_to_cpp::BarOp::getOperandName(unsigned int)’:
/home/botworker/bbot/amdgpu-offload-ubuntu-22-cmake-build-only/build/tools/mlir/test/lib/Dialect/TestIRDLToCpp/test_irdl_to_cpp.irdl.mlir.cpp.inc:223:18: warning: comparison of unsigned expression in ‘< 0’ is always false [-Wtype-limits]
  223 |     assert(index < 0 && "invalid attribute index");
      |            ~~~~~~^~~
[4805/7836] Linking CXX shared library lib/libMLIRShapeDialect.so.21.0git
[4806/7836] Linking CXX shared library lib/libLLVMSandboxIR.so.21.0git
[4807/7836] Linking CXX shared library lib/libLLVMTransformUtils.so.21.0git
[4808/7836] Building AMDGPUGenPostLegalizeGICombiner.inc...
[4809/7836] Building CXX object tools/clang/lib/Lex/CMakeFiles/obj.clangLex.dir/LiteralSupport.cpp.o
[4810/7836] Building AMDGPUGenDisassemblerTables.inc...
[4811/7836] Building AMDGPUGenRegBankGICombiner.inc...
[4812/7836] Building AMDGPUGenPreLegalizeGICombiner.inc...
[4813/7836] Building AMDGPUGenMCCodeEmitter.inc...
[4814/7836] Linking CXX shared library lib/libMLIRSPIRVDialect.so.21.0git
[4815/7836] Building AMDGPUGenSubtargetInfo.inc...
[4816/7836] Building CXX object tools/clang/lib/Frontend/Rewrite/CMakeFiles/obj.clangRewriteFrontend.dir/RewriteModernObjC.cpp.o
[4817/7836] Building AMDGPUGenSearchableTables.inc...
[4818/7836] Building CXX object tools/clang/lib/Interpreter/CMakeFiles/obj.clangInterpreter.dir/DeviceOffload.cpp.o
[4819/7836] Building AMDGPUGenCallingConv.inc...
[4820/7836] Building CXX object tools/clang/lib/Tooling/CMakeFiles/obj.clangTooling.dir/GuessTargetAndModeCompilationDatabase.cpp.o

```

</details>

https://github.com/llvm/llvm-project/pull/136098