[llvm] [offload][SYCL] Add Module splitting by categories. (PR #131347)

Tue Aug 5 08:51:17 PDT 2025

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `clang-ppc64le-rhel` running on `ppc64le-clang-rhel-test` while building `llvm` at step 5 "build-unified-tree".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/145/builds/8871

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

```
Step 5 (build-unified-tree) failure: build (failure)
...
34.854 [3216/192/3200] Building CXX object lib/Target/Hexagon/TargetInfo/CMakeFiles/LLVMHexagonInfo.dir/HexagonTargetInfo.cpp.o
34.861 [3215/192/3201] Building CXX object lib/Target/Lanai/CMakeFiles/LLVMLanaiCodeGen.dir/LanaiISelDAGToDAG.cpp.o
34.866 [3214/192/3202] Building CXX object lib/Target/Lanai/CMakeFiles/LLVMLanaiCodeGen.dir/LanaiRegisterInfo.cpp.o
34.874 [3213/192/3203] Building CXX object lib/Target/Lanai/CMakeFiles/LLVMLanaiCodeGen.dir/LanaiSubtarget.cpp.o
34.880 [3212/192/3204] Building CXX object lib/Target/Lanai/CMakeFiles/LLVMLanaiCodeGen.dir/LanaiTargetMachine.cpp.o
34.885 [3211/192/3205] Building CXX object lib/Target/Lanai/MCTargetDesc/CMakeFiles/LLVMLanaiDesc.dir/LanaiInstPrinter.cpp.o
34.893 [3210/192/3206] Linking CXX shared library lib/libLLVMARMUtils.so.22.0git
34.898 [3209/192/3207] Building X86GenDAGISel.inc...
34.901 [3208/192/3208] Building X86GenSubtargetInfo.inc...
34.907 [3207/192/3209] Building CXX object lib/Transforms/Utils/CMakeFiles/LLVMTransformUtils.dir/SplitModuleByCategory.cpp.o
FAILED: lib/Transforms/Utils/CMakeFiles/LLVMTransformUtils.dir/SplitModuleByCategory.cpp.o 
ccache /home/buildbots/llvm-external-buildbots/clang.19.1.7/bin/clang++ --gcc-toolchain=/gcc-toolchain/usr -DEXPERIMENTAL_KEY_INSTRUCTIONS -DGTEST_HAS_RTTI=0 -DLLVM_EXPORTS -D_DEBUG -D_GLIBCXX_ASSERTIONS -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -D__SHORT_FILE__=\"SplitModuleByCategory.cpp\" -I/home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-rhel-test/clang-ppc64le-rhel/build/lib/Transforms/Utils -I/home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-rhel-test/clang-ppc64le-rhel/llvm-project/llvm/lib/Transforms/Utils -I/home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-rhel-test/clang-ppc64le-rhel/build/include -I/home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-rhel-test/clang-ppc64le-rhel/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 -Wmisleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -ffunction-sections -fdata-sections -O3 -DNDEBUG -std=c++17 -fPIC  -fno-exceptions -funwind-tables -fno-rtti -UNDEBUG -MD -MT lib/Transforms/Utils/CMakeFiles/LLVMTransformUtils.dir/SplitModuleByCategory.cpp.o -MF lib/Transforms/Utils/CMakeFiles/LLVMTransformUtils.dir/SplitModuleByCategory.cpp.o.d -o lib/Transforms/Utils/CMakeFiles/LLVMTransformUtils.dir/SplitModuleByCategory.cpp.o -c /home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-rhel-test/clang-ppc64le-rhel/llvm-project/llvm/lib/Transforms/Utils/SplitModuleByCategory.cpp
/home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-rhel-test/clang-ppc64le-rhel/llvm-project/llvm/lib/Transforms/Utils/SplitModuleByCategory.cpp:321:14: error: moving a temporary object prevents copy elision [-Werror,-Wpessimizing-move]
  321 |     Callback(std::move(MD.releaseModule()));
      |              ^
/home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-rhel-test/clang-ppc64le-rhel/llvm-project/llvm/lib/Transforms/Utils/SplitModuleByCategory.cpp:321:14: note: remove std::move call here
  321 |     Callback(std::move(MD.releaseModule()));
      |              ^~~~~~~~~~                  ~
1 error generated.
34.910 [3207/191/3210] Building CXX object lib/Object/CMakeFiles/LLVMObject.dir/IRSymtab.cpp.o
34.914 [3207/190/3211] Building CXX object lib/Target/Hexagon/CMakeFiles/LLVMHexagonCodeGen.dir/HexagonGenMemAbsolute.cpp.o
34.918 [3207/189/3212] Building CXX object lib/Target/Hexagon/CMakeFiles/LLVMHexagonCodeGen.dir/HexagonInstrInfo.cpp.o
34.923 [3207/188/3213] Building CXX object lib/Target/Hexagon/CMakeFiles/LLVMHexagonCodeGen.dir/HexagonISelDAGToDAG.cpp.o
34.928 [3207/187/3214] Building CXX object lib/Target/Hexagon/CMakeFiles/LLVMHexagonCodeGen.dir/HexagonISelDAGToDAGHVX.cpp.o
34.931 [3207/186/3215] Building CXX object lib/Target/Hexagon/CMakeFiles/LLVMHexagonCodeGen.dir/HexagonISelLowering.cpp.o
34.934 [3207/185/3216] Building CXX object lib/Target/Hexagon/CMakeFiles/LLVMHexagonCodeGen.dir/HexagonMachineScheduler.cpp.o
34.938 [3207/184/3217] Building CXX object lib/Target/Hexagon/CMakeFiles/LLVMHexagonCodeGen.dir/HexagonMask.cpp.o
34.942 [3207/183/3218] Building CXX object lib/Target/Hexagon/CMakeFiles/LLVMHexagonCodeGen.dir/HexagonMCInstLower.cpp.o
34.945 [3207/182/3219] Building CXX object lib/Target/Hexagon/CMakeFiles/LLVMHexagonCodeGen.dir/HexagonNewValueJump.cpp.o
34.950 [3207/181/3220] Building CXX object lib/Target/Hexagon/CMakeFiles/LLVMHexagonCodeGen.dir/HexagonOptAddrMode.cpp.o
34.953 [3207/180/3221] Building CXX object lib/Target/Hexagon/CMakeFiles/LLVMHexagonCodeGen.dir/HexagonPeephole.cpp.o
34.957 [3207/179/3222] Building CXX object lib/Target/Hexagon/CMakeFiles/LLVMHexagonCodeGen.dir/HexagonRDFOpt.cpp.o
34.960 [3207/178/3223] Building CXX object lib/Target/Hexagon/CMakeFiles/LLVMHexagonCodeGen.dir/HexagonRegisterInfo.cpp.o
34.963 [3207/177/3224] Building CXX object lib/Target/Hexagon/CMakeFiles/LLVMHexagonCodeGen.dir/HexagonSelectionDAGInfo.cpp.o
34.965 [3207/176/3225] Building CXX object lib/Target/Hexagon/CMakeFiles/LLVMHexagonCodeGen.dir/HexagonSplitConst32AndConst64.cpp.o
34.967 [3207/175/3226] Building CXX object lib/Target/Hexagon/CMakeFiles/LLVMHexagonCodeGen.dir/HexagonSplitDouble.cpp.o
34.970 [3207/174/3227] Building CXX object lib/Target/Hexagon/CMakeFiles/LLVMHexagonCodeGen.dir/HexagonLoadStoreWidening.cpp.o
34.974 [3207/173/3228] Building CXX object lib/Target/Hexagon/CMakeFiles/LLVMHexagonCodeGen.dir/HexagonTargetMachine.cpp.o
34.978 [3207/172/3229] Building CXX object lib/Target/Hexagon/CMakeFiles/LLVMHexagonCodeGen.dir/HexagonTargetTransformInfo.cpp.o
34.980 [3207/171/3230] Building CXX object lib/Target/Hexagon/CMakeFiles/LLVMHexagonCodeGen.dir/RDFCopy.cpp.o
34.982 [3207/170/3231] Building CXX object lib/Target/Hexagon/CMakeFiles/LLVMHexagonCodeGen.dir/RDFDeadCode.cpp.o
34.984 [3207/169/3232] Building CXX object lib/Target/Hexagon/AsmParser/CMakeFiles/LLVMHexagonAsmParser.dir/HexagonAsmParser.cpp.o
34.986 [3207/168/3233] Building CXX object lib/Target/Hexagon/MCTargetDesc/CMakeFiles/LLVMHexagonDesc.dir/HexagonAsmBackend.cpp.o
34.988 [3207/167/3234] Building CXX object lib/Target/Hexagon/MCTargetDesc/CMakeFiles/LLVMHexagonDesc.dir/HexagonELFObjectWriter.cpp.o
34.989 [3207/166/3235] Building CXX object lib/Target/Hexagon/MCTargetDesc/CMakeFiles/LLVMHexagonDesc.dir/HexagonMCAsmInfo.cpp.o
34.992 [3207/165/3236] Building CXX object lib/Target/Lanai/CMakeFiles/LLVMLanaiCodeGen.dir/LanaiAsmPrinter.cpp.o
34.994 [3207/164/3237] Building CXX object lib/Target/Lanai/CMakeFiles/LLVMLanaiCodeGen.dir/LanaiDelaySlotFiller.cpp.o
34.998 [3207/163/3238] Building CXX object lib/Target/Lanai/CMakeFiles/LLVMLanaiCodeGen.dir/LanaiFrameLowering.cpp.o
35.000 [3207/162/3239] Building CXX object lib/Target/Lanai/CMakeFiles/LLVMLanaiCodeGen.dir/LanaiInstrInfo.cpp.o

```

</details>

https://github.com/llvm/llvm-project/pull/131347