[clang] [amdgpu-arch] Replace use of HSA with reading sysfs directly (PR #116651)

Tue Nov 19 05:24:47 PST 2024

llvm-ci wrote:

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

Full details are available at: https://lab.llvm.org/buildbot/#/builders/145/builds/3271

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

```
Step 5 (build-unified-tree) failure: build (failure)
...
50.887 [1254/34/5032] Building CXX object tools/clang/tools/extra/clangd/refactor/tweaks/CMakeFiles/obj.clangDaemonTweaks.dir/RawStringLiteral.cpp.o
50.889 [1254/33/5033] Building CXX object tools/clang/tools/extra/pp-trace/CMakeFiles/pp-trace.dir/PPTrace.cpp.o
50.941 [1254/32/5034] Building CXX object tools/clang/tools/extra/clangd/refactor/tweaks/CMakeFiles/obj.clangDaemonTweaks.dir/ObjCLocalizeStringLiteral.cpp.o
50.944 [1254/31/5035] Building CXX object tools/clang/tools/extra/clangd/refactor/tweaks/CMakeFiles/obj.clangDaemonTweaks.dir/SwapBinaryOperands.cpp.o
50.961 [1254/30/5036] Building CXX object tools/clang/tools/extra/clangd/refactor/tweaks/CMakeFiles/obj.clangDaemonTweaks.dir/ObjCMemberwiseInitializer.cpp.o
50.970 [1254/29/5037] Building CXX object tools/clang/tools/extra/clangd/refactor/tweaks/CMakeFiles/obj.clangDaemonTweaks.dir/SpecialMembers.cpp.o
50.991 [1254/28/5038] Building CXX object tools/clang/tools/extra/clang-doc/CMakeFiles/obj.clangDoc.dir/Mapper.cpp.o
51.062 [1254/27/5039] Building CXX object tools/clang/tools/extra/clangd/tool/CMakeFiles/obj.clangdMain.dir/Check.cpp.o
51.172 [1254/26/5040] Building CXX object tools/clang/tools/extra/clangd/refactor/tweaks/CMakeFiles/obj.clangDaemonTweaks.dir/RemoveUsingNamespace.cpp.o
51.388 [1254/25/5041] Building CXX object tools/clang/tools/amdgpu-arch/CMakeFiles/amdgpu-arch.dir/AMDGPUArchByKFD.cpp.o
FAILED: tools/clang/tools/amdgpu-arch/CMakeFiles/amdgpu-arch.dir/AMDGPUArchByKFD.cpp.o 
ccache /home/docker/llvm-external-buildbots/clang.17.0.6/bin/clang++ --gcc-toolchain=/gcc-toolchain/usr -DGTEST_HAS_RTTI=0 -DLLVM_BUILD_STATIC -D_DEBUG -D_GLIBCXX_ASSERTIONS -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -I/home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-rhel-test/clang-ppc64le-rhel/build/tools/clang/tools/amdgpu-arch -I/home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-rhel-test/clang-ppc64le-rhel/llvm-project/clang/tools/amdgpu-arch -I/home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-rhel-test/clang-ppc64le-rhel/llvm-project/clang/include -I/home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-rhel-test/clang-ppc64le-rhel/build/tools/clang/include -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 -fno-common -Woverloaded-virtual -Wno-nested-anon-types -O3 -DNDEBUG -std=c++17  -fno-exceptions -funwind-tables -fno-rtti -UNDEBUG -MD -MT tools/clang/tools/amdgpu-arch/CMakeFiles/amdgpu-arch.dir/AMDGPUArchByKFD.cpp.o -MF tools/clang/tools/amdgpu-arch/CMakeFiles/amdgpu-arch.dir/AMDGPUArchByKFD.cpp.o.d -o tools/clang/tools/amdgpu-arch/CMakeFiles/amdgpu-arch.dir/AMDGPUArchByKFD.cpp.o -c /home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-rhel-test/clang-ppc64le-rhel/llvm-project/clang/tools/amdgpu-arch/AMDGPUArchByKFD.cpp
/home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-rhel-test/clang-ppc64le-rhel/llvm-project/clang/tools/amdgpu-arch/AMDGPUArchByKFD.cpp:58:9: error: ignoring return value of function declared with 'nodiscard' attribute [-Werror,-Wunused-result]
   58 |         Line.drop_while([](char C) { return std::isspace(C); });
      |         ^~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1 error generated.
51.592 [1254/24/5042] Building CXX object tools/clang/tools/amdgpu-arch/CMakeFiles/amdgpu-arch.dir/AMDGPUArch.cpp.o
52.882 [1254/23/5043] Building CXX object lib/MC/MCParser/CMakeFiles/LLVMMCParser.dir/AsmParser.cpp.o
53.622 [1254/22/5044] Building RISCVGenDAGISel.inc...
56.562 [1254/21/5045] Building AArch64GenInstrInfo.inc...
57.025 [1254/20/5046] Building AArch64GenSubtargetInfo.inc...
59.984 [1254/19/5047] Building CXX object lib/CodeGen/AsmPrinter/CMakeFiles/LLVMAsmPrinter.dir/AsmPrinter.cpp.o
63.048 [1254/18/5048] Building CXX object lib/LTO/CMakeFiles/LLVMLTO.dir/LTO.cpp.o
72.711 [1254/17/5049] Building AMDGPUGenMCCodeEmitter.inc...
74.371 [1254/16/5050] Building AMDGPUGenRegBankGICombiner.inc...
76.581 [1254/15/5051] Building AMDGPUGenPreLegalizeGICombiner.inc...
76.990 [1254/14/5052] Building AMDGPUGenMCPseudoLowering.inc...
77.264 [1254/13/5053] Building AMDGPUGenCallingConv.inc...
77.313 [1254/12/5054] Building AMDGPUGenSearchableTables.inc...
77.560 [1254/11/5055] Building AMDGPUGenDisassemblerTables.inc...
79.313 [1254/10/5056] Building AMDGPUGenPostLegalizeGICombiner.inc...
80.461 [1254/9/5057] Building AMDGPUGenSubtargetInfo.inc...
85.388 [1254/8/5058] Building RISCVGenSubtargetInfo.inc...
87.809 [1254/7/5059] Building AMDGPUGenAsmWriter.inc...
93.218 [1254/6/5060] Building AMDGPUGenAsmMatcher.inc...
94.931 [1254/5/5061] Building AMDGPUGenGlobalISel.inc...
97.021 [1254/4/5062] Building AMDGPUGenDAGISel.inc...
97.644 [1254/3/5063] Building AMDGPUGenInstrInfo.inc...
99.254 [1254/2/5064] Building AMDGPUGenRegisterBank.inc...
101.339 [1254/1/5065] Building AMDGPUGenRegisterInfo.inc...
ninja: build stopped: subcommand failed.

```

</details>

https://github.com/llvm/llvm-project/pull/116651