[llvm] [offload][SYCL] Add SYCL Module splitting (PR #119713)

Tue Mar 11 06:48:23 PDT 2025

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `clang-cmake-x86_64-avx512-linux` running on `avx512-intel64` while building `llvm` at step 6 "build stage 1".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/133/builds/12625

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

```
Step 6 (build stage 1) failure: 'ninja' (failure)
...
[4000/4054] Linking CXX shared library lib/libclang-cpp.so.21.0git
[4001/4054] Creating library symlink lib/libclang-cpp.so
[4002/4054] Linking CXX executable bin/sanstats
[4003/4054] Building CXX object tools/verify-uselistorder/CMakeFiles/verify-uselistorder.dir/verify-uselistorder.cpp.o
[4004/4054] Building CXX object tools/llvm-objdump/CMakeFiles/llvm-objdump.dir/llvm-objdump.cpp.o
[4005/4054] Linking CXX executable bin/llvm-opt-fuzzer
[4006/4054] Linking CXX executable bin/llvm-rtdyld
[4007/4054] Building CXX object tools/yaml2obj/CMakeFiles/yaml2obj.dir/yaml2obj.cpp.o
[4008/4054] Building CXX object tools/llvm-xray/CMakeFiles/llvm-xray.dir/xray-account.cpp.o
[4009/4054] Linking CXX executable bin/llvm-split
FAILED: bin/llvm-split 
: && /usr/bin/c++ -march=cascadelake -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -Werror=date-time -fno-lifetime-dse -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,-rpath-link,/localdisk2/buildbot/llvm-worker/clang-cmake-x86_64-avx512-linux/stage1/./lib  -Wl,--gc-sections tools/llvm-split/CMakeFiles/llvm-split.dir/llvm-split.cpp.o -o bin/llvm-split  -Wl,-rpath,"\$ORIGIN/../lib:"  lib/libLLVMX86AsmParser.a  lib/libLLVMX86CodeGen.a  lib/libLLVMX86Desc.a  lib/libLLVMX86Info.a  lib/libLLVMTransformUtils.a  lib/libLLVMBitWriter.a  lib/libLLVMCodeGen.a  lib/libLLVMCore.a  lib/libLLVMIRReader.a  lib/libLLVMMC.a  lib/libLLVMSupport.a  lib/libLLVMTarget.a  lib/libLLVMTargetParser.a  lib/libLLVMMCDisassembler.a  lib/libLLVMAsmPrinter.a  lib/libLLVMCFGuard.a  lib/libLLVMGlobalISel.a  lib/libLLVMIRPrinter.a  lib/libLLVMInstrumentation.a  lib/libLLVMSelectionDAG.a  lib/libLLVMCodeGen.a  lib/libLLVMScalarOpts.a  lib/libLLVMAggressiveInstCombine.a  lib/libLLVMInstCombine.a  lib/libLLVMCGData.a  lib/libLLVMBitWriter.a  lib/libLLVMObjCARCOpts.a  lib/libLLVMTransformUtils.a  lib/libLLVMTarget.a  lib/libLLVMAnalysis.a  lib/libLLVMProfileData.a  lib/libLLVMSymbolize.a  lib/libLLVMDebugInfoDWARF.a  lib/libLLVMDebugInfoPDB.a  lib/libLLVMDebugInfoCodeView.a  lib/libLLVMDebugInfoMSF.a  lib/libLLVMDebugInfoBTF.a  lib/libLLVMObject.a  lib/libLLVMIRReader.a  lib/libLLVMAsmParser.a  lib/libLLVMMCParser.a  lib/libLLVMMC.a  lib/libLLVMBitReader.a  lib/libLLVMCore.a  lib/libLLVMRemarks.a  lib/libLLVMBitstreamReader.a  lib/libLLVMTextAPI.a  lib/libLLVMBinaryFormat.a  lib/libLLVMTargetParser.a  lib/libLLVMCodeGenTypes.a  lib/libLLVMSupport.a  lib/libLLVMDemangle.a  -lrt  -ldl  -lm  /usr/lib64/libz.so  /usr/lib64/libzstd.so && :
/usr/bin/ld: lib/libLLVMTransformUtils.a(SYCLSplitModule.cpp.o): in function `llvm::detail::PassModel<llvm::Module, llvm::GlobalDCEPass, llvm::AnalysisManager<llvm::Module>>::printPipeline(llvm::raw_ostream&, llvm::function_ref<llvm::StringRef (llvm::StringRef)>)':
SYCLSplitModule.cpp:(.text._ZN4llvm6detail9PassModelINS_6ModuleENS_13GlobalDCEPassENS_15AnalysisManagerIS2_JEEEJEE13printPipelineERNS_11raw_ostreamENS_12function_refIFNS_9StringRefESA_EEE[_ZN4llvm6detail9PassModelINS_6ModuleENS_13GlobalDCEPassENS_15AnalysisManagerIS2_JEEEJEE13printPipelineERNS_11raw_ostreamENS_12function_refIFNS_9StringRefESA_EEE]+0x5): undefined reference to `llvm::GlobalDCEPass::printPipeline(llvm::raw_ostream&, llvm::function_ref<llvm::StringRef (llvm::StringRef)>)'
/usr/bin/ld: lib/libLLVMTransformUtils.a(SYCLSplitModule.cpp.o): in function `llvm::detail::PassModel<llvm::Module, llvm::GlobalDCEPass, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&)':
SYCLSplitModule.cpp:(.text._ZN4llvm6detail9PassModelINS_6ModuleENS_13GlobalDCEPassENS_15AnalysisManagerIS2_JEEEJEE3runERS2_RS5_[_ZN4llvm6detail9PassModelINS_6ModuleENS_13GlobalDCEPassENS_15AnalysisManagerIS2_JEEEJEE3runERS2_RS5_]+0xa): undefined reference to `llvm::GlobalDCEPass::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&)'
/usr/bin/ld: lib/libLLVMTransformUtils.a(SYCLSplitModule.cpp.o): in function `llvm::detail::PassModel<llvm::Module, llvm::StripDeadPrototypesPass, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&)':
SYCLSplitModule.cpp:(.text._ZN4llvm6detail9PassModelINS_6ModuleENS_23StripDeadPrototypesPassENS_15AnalysisManagerIS2_JEEEJEE3runERS2_RS5_[_ZN4llvm6detail9PassModelINS_6ModuleENS_23StripDeadPrototypesPassENS_15AnalysisManagerIS2_JEEEJEE3runERS2_RS5_]+0xa): undefined reference to `llvm::StripDeadPrototypesPass::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&)'
/usr/bin/ld: lib/libLLVMTransformUtils.a(SYCLSplitModule.cpp.o): in function `llvm::detail::PassModel<llvm::Module, llvm::StripDeadDebugInfoPass, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&)':
SYCLSplitModule.cpp:(.text._ZN4llvm6detail9PassModelINS_6ModuleENS_22StripDeadDebugInfoPassENS_15AnalysisManagerIS2_JEEEJEE3runERS2_RS5_[_ZN4llvm6detail9PassModelINS_6ModuleENS_22StripDeadDebugInfoPassENS_15AnalysisManagerIS2_JEEEJEE3runERS2_RS5_]+0xa): undefined reference to `llvm::StripDeadDebugInfoPass::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&)'
collect2: error: ld returned 1 exit status
[4010/4054] Building CXX object tools/llvm-jitlink/CMakeFiles/llvm-jitlink.dir/llvm-jitlink.cpp.o
[4011/4054] Building CXX object tools/llvm-profgen/CMakeFiles/llvm-profgen.dir/ProfileGenerator.cpp.o
[4012/4054] Linking CXX executable bin/yaml2obj
[4013/4054] Linking CXX executable bin/verify-uselistorder
[4014/4054] Linking CXX executable bin/llvm-xray
[4015/4054] Building CXX object tools/llvm-profgen/CMakeFiles/llvm-profgen.dir/ProfiledBinary.cpp.o
[4016/4054] Linking CXX executable bin/llvm-objdump
[4017/4054] Building CXX object tools/llvm-reduce/CMakeFiles/llvm-reduce.dir/ReducerWorkItem.cpp.o
[4018/4054] Building CXX object tools/sancov/CMakeFiles/sancov.dir/sancov.cpp.o
[4019/4054] Building CXX object tools/obj2yaml/CMakeFiles/obj2yaml.dir/macho2yaml.cpp.o
[4020/4054] Building CXX object tools/opt/CMakeFiles/LLVMOptDriver.dir/optdriver.cpp.o
[4021/4054] Linking CXX shared library lib/libclang.so.21.0.0git
[4022/4054] Building CXX object tools/opt/CMakeFiles/LLVMOptDriver.dir/NewPMDriver.cpp.o
[4023/4054] Building CXX object tools/obj2yaml/CMakeFiles/obj2yaml.dir/elf2yaml.cpp.o
[4024/4054] Building CXX object tools/llvm-readobj/CMakeFiles/llvm-readobj.dir/ELFDumper.cpp.o
ninja: build stopped: subcommand failed.

```

</details>

https://github.com/llvm/llvm-project/pull/119713