[clang] [HLSL] Implement HLSL intialization list support (PR #123141)

Sat Feb 15 12:11:04 PST 2025

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `ppc64le-lld-multistage-test` running on `ppc64le-lld-multistage-test` while building `clang` at step 12 "build-stage2-unified-tree".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/168/builds/8747

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

```
Step 12 (build-stage2-unified-tree) failure: build (failure)
...
217.876 [899/780/4784] Linking CXX static library lib/libLLVMPowerPCAsmParser.a
217.881 [899/779/4785] Building CXX object tools/clang/unittests/Format/CMakeFiles/FormatTests.dir/SortImportsTestJava.cpp.o
217.885 [899/778/4786] Building CXX object tools/clang/lib/CodeGen/CMakeFiles/obj.clangCodeGen.dir/CGCXX.cpp.o
217.936 [899/777/4787] Building CXX object lib/Target/PowerPC/CMakeFiles/LLVMPowerPCCodeGen.dir/PPCPreEmitPeephole.cpp.o
217.977 [899/776/4788] Building AMDGPUGenMCCodeEmitter.inc...
218.032 [899/775/4789] Building CXX object tools/clang/unittests/Format/CMakeFiles/FormatTests.dir/FormatTestTextProto.cpp.o
218.037 [899/774/4790] Building CXX object tools/clang/lib/AST/CMakeFiles/obj.clangAST.dir/TypePrinter.cpp.o
218.040 [899/773/4791] Building CXX object tools/clang/unittests/Format/CMakeFiles/FormatTests.dir/FormatTestSelective.cpp.o
218.067 [899/772/4792] Building CXX object lib/Target/XCore/CMakeFiles/LLVMXCoreCodeGen.dir/XCoreAsmPrinter.cpp.o
218.119 [899/771/4793] Building CXX object tools/clang/lib/Sema/CMakeFiles/obj.clangSema.dir/SemaHLSL.cpp.o
FAILED: tools/clang/lib/Sema/CMakeFiles/obj.clangSema.dir/SemaHLSL.cpp.o 
ccache /home/buildbots/llvm-external-buildbots/workers/ppc64le-lld-multistage-test/ppc64le-lld-multistage-test/install/stage1/bin/clang++ -DCLANG_EXPORTS -DGTEST_HAS_RTTI=0 -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-lld-multistage-test/ppc64le-lld-multistage-test/build/stage2/tools/clang/lib/Sema -I/home/buildbots/llvm-external-buildbots/workers/ppc64le-lld-multistage-test/ppc64le-lld-multistage-test/llvm-project/clang/lib/Sema -I/home/buildbots/llvm-external-buildbots/workers/ppc64le-lld-multistage-test/ppc64le-lld-multistage-test/llvm-project/clang/include -I/home/buildbots/llvm-external-buildbots/workers/ppc64le-lld-multistage-test/ppc64le-lld-multistage-test/build/stage2/tools/clang/include -I/home/buildbots/llvm-external-buildbots/workers/ppc64le-lld-multistage-test/ppc64le-lld-multistage-test/build/stage2/include -I/home/buildbots/llvm-external-buildbots/workers/ppc64le-lld-multistage-test/ppc64le-lld-multistage-test/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/lib/Sema/CMakeFiles/obj.clangSema.dir/SemaHLSL.cpp.o -MF tools/clang/lib/Sema/CMakeFiles/obj.clangSema.dir/SemaHLSL.cpp.o.d -o tools/clang/lib/Sema/CMakeFiles/obj.clangSema.dir/SemaHLSL.cpp.o -c /home/buildbots/llvm-external-buildbots/workers/ppc64le-lld-multistage-test/ppc64le-lld-multistage-test/llvm-project/clang/lib/Sema/SemaHLSL.cpp
/home/buildbots/llvm-external-buildbots/workers/ppc64le-lld-multistage-test/ppc64le-lld-multistage-test/llvm-project/clang/lib/Sema/SemaHLSL.cpp:3226:17: error: variable 'RTy' set but not used [-Werror,-Wunused-but-set-variable]
 3226 |       if (auto *RTy = Ty->getAs<RecordType>())
      |                 ^
1 error generated.
218.192 [899/770/4794] Building CXX object tools/clang/lib/AST/CMakeFiles/obj.clangAST.dir/Stmt.cpp.o
218.248 [899/769/4795] Building CXX object unittests/Target/PowerPC/CMakeFiles/PowerPCTests.dir/AIXRelocModelTest.cpp.o
218.253 [899/768/4796] Building CXX object tools/clang/unittests/Lex/CMakeFiles/LexTests.dir/ModuleDeclStateTest.cpp.o
218.304 [899/767/4797] Building CXX object tools/clang/tools/clang-refactor/CMakeFiles/clang-refactor.dir/TestSupport.cpp.o
218.308 [899/766/4798] Building CXX object lib/Target/AArch64/CMakeFiles/LLVMAArch64CodeGen.dir/AArch64AdvSIMDScalarPass.cpp.o
218.369 [899/765/4799] Building CXX object tools/clang/lib/CodeGen/CMakeFiles/obj.clangCodeGen.dir/ABIInfoImpl.cpp.o
218.376 [899/764/4800] Building CXX object tools/clang/tools/clang-format/CMakeFiles/clang-format.dir/ClangFormat.cpp.o
218.502 [899/763/4801] Building CXX object tools/clang/lib/CodeGen/CMakeFiles/obj.clangCodeGen.dir/ABIInfo.cpp.o
218.507 [899/762/4802] Building CXX object tools/llvm-exegesis/lib/CMakeFiles/LLVMExegesis.dir/BenchmarkRunner.cpp.o
218.557 [899/761/4803] Building AMDGPUGenCallingConv.inc...
218.598 [899/760/4804] Building CXX object tools/clang/lib/Sema/CMakeFiles/obj.clangSema.dir/SemaWasm.cpp.o
218.628 [899/759/4805] Building CXX object lib/Target/WebAssembly/CMakeFiles/LLVMWebAssemblyCodeGen.dir/WebAssemblyISelLowering.cpp.o
218.641 [899/758/4806] Building CXX object unittests/MC/X86/CMakeFiles/X86MCTests.dir/X86MCDisassemblerTest.cpp.o
218.650 [899/757/4807] Building CXX object lib/Target/ARM/CMakeFiles/LLVMARMCodeGen.dir/ARMLowOverheadLoops.cpp.o
218.683 [899/756/4808] Building CXX object tools/clang/lib/CodeGen/CMakeFiles/obj.clangCodeGen.dir/Targets/VE.cpp.o
218.753 [899/755/4809] Building CXX object lib/Target/ARM/CMakeFiles/LLVMARMCodeGen.dir/Thumb2SizeReduction.cpp.o
218.756 [899/754/4810] Building CXX object unittests/Target/AArch64/CMakeFiles/AArch64Tests.dir/AArch64InstPrinterTest.cpp.o
218.773 [899/753/4811] Building AMDGPUGenSearchableTables.inc...
218.795 [899/752/4812] Building CXX object tools/clang/lib/CodeGen/CMakeFiles/obj.clangCodeGen.dir/Targets/ARC.cpp.o
218.828 [899/751/4813] Building CXX object tools/clang/unittests/Lex/CMakeFiles/LexTests.dir/PPDependencyDirectivesTest.cpp.o
218.861 [899/750/4814] Building CXX object tools/clang/lib/Sema/CMakeFiles/obj.clangSema.dir/SemaCXXScopeSpec.cpp.o
218.871 [899/749/4815] Building CXX object lib/Target/BPF/CMakeFiles/LLVMBPFCodeGen.dir/BPFISelDAGToDAG.cpp.o
218.949 [899/748/4816] Building CXX object lib/Target/X86/CMakeFiles/LLVMX86CodeGen.dir/X86InsertWait.cpp.o
218.957 [899/747/4817] Building CXX object lib/Target/X86/CMakeFiles/LLVMX86CodeGen.dir/X86MacroFusion.cpp.o
219.050 [899/746/4818] Building CXX object lib/Target/X86/CMakeFiles/LLVMX86CodeGen.dir/X86AvoidTrailingCall.cpp.o
219.082 [899/745/4819] Building CXX object lib/Target/AArch64/MCTargetDesc/CMakeFiles/LLVMAArch64Desc.dir/AArch64ELFStreamer.cpp.o
219.119 [899/744/4820] Building CXX object lib/Target/Mips/CMakeFiles/LLVMMipsCodeGen.dir/Mips16ISelDAGToDAG.cpp.o
219.135 [899/743/4821] Building CXX object tools/clang/unittests/Format/CMakeFiles/FormatTests.dir/UsingDeclarationsSorterTest.cpp.o
219.153 [899/742/4822] Building CXX object lib/Target/Mips/CMakeFiles/LLVMMipsCodeGen.dir/MipsInstrInfo.cpp.o
219.199 [899/741/4823] Building CXX object tools/clang/lib/CodeGen/CMakeFiles/obj.clangCodeGen.dir/Targets/WebAssembly.cpp.o
219.226 [899/740/4824] Building CXX object tools/clang/lib/CodeGen/CMakeFiles/obj.clangCodeGen.dir/CGOpenCLRuntime.cpp.o
219.235 [899/739/4825] Building CXX object lib/Target/Hexagon/CMakeFiles/LLVMHexagonCodeGen.dir/HexagonFrameLowering.cpp.o
219.261 [899/738/4826] Building CXX object tools/clang/unittests/AST/ByteCode/CMakeFiles/InterpTests.dir/BitcastBuffer.cpp.o

```

</details>

https://github.com/llvm/llvm-project/pull/123141