[llvm] [RISCV] Initial codegen support for zvqdotq extension (PR #137039)

Wed May 7 11:02:53 PDT 2025

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `llvm-clang-x86_64-expensive-checks-debian` running on `gribozavr4` while building `llvm` at step 5 "build-unified-tree".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/16/builds/18545

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

```
Step 5 (build-unified-tree) failure: build (failure)
...
39.747 [607/35/3486] Building CXX object lib/Target/RISCV/CMakeFiles/LLVMRISCVCodeGen.dir/RISCVVMV0Elimination.cpp.o
39.839 [607/34/3487] Building CXX object lib/Target/RISCV/MCTargetDesc/CMakeFiles/LLVMRISCVDesc.dir/RISCVBaseInfo.cpp.o
39.865 [607/33/3488] Building CXX object lib/Target/RISCV/CMakeFiles/LLVMRISCVCodeGen.dir/RISCVFrameLowering.cpp.o
39.973 [607/32/3489] Building CXX object lib/Target/RISCV/CMakeFiles/LLVMRISCVCodeGen.dir/RISCVVectorPeephole.cpp.o
40.074 [607/31/3490] Building CXX object lib/Target/RISCV/CMakeFiles/LLVMRISCVCodeGen.dir/RISCVCodeGenPrepare.cpp.o
40.102 [607/30/3491] Building CXX object lib/Target/RISCV/CMakeFiles/LLVMRISCVCodeGen.dir/RISCVMergeBaseOffset.cpp.o
40.179 [607/29/3492] Building CXX object lib/Target/RISCV/CMakeFiles/LLVMRISCVCodeGen.dir/RISCVFoldMemOffset.cpp.o
40.348 [607/28/3493] Building CXX object lib/Target/RISCV/CMakeFiles/LLVMRISCVCodeGen.dir/RISCVZacasABIFix.cpp.o
40.707 [607/27/3494] Building CXX object lib/Target/RISCV/CMakeFiles/LLVMRISCVCodeGen.dir/RISCVSubtarget.cpp.o
40.926 [607/26/3495] Building CXX object lib/Target/RISCV/CMakeFiles/LLVMRISCVCodeGen.dir/RISCVISelLowering.cpp.o
FAILED: lib/Target/RISCV/CMakeFiles/LLVMRISCVCodeGen.dir/RISCVISelLowering.cpp.o 
CCACHE_CPP2=yes CCACHE_HASHDIR=yes CCACHE_SLOPPINESS=pch_defines,time_macros /usr/bin/ccache /usr/bin/clang++ -DEXPENSIVE_CHECKS -DGTEST_HAS_RTTI=0 -D_DEBUG -D_GLIBCXX_ASSERTIONS -D_GLIBCXX_DEBUG -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -I/b/1/llvm-clang-x86_64-expensive-checks-debian/build/lib/Target/RISCV -I/b/1/llvm-clang-x86_64-expensive-checks-debian/llvm-project/llvm/lib/Target/RISCV -I/b/1/llvm-clang-x86_64-expensive-checks-debian/build/include -I/b/1/llvm-clang-x86_64-expensive-checks-debian/llvm-project/llvm/include -U_GLIBCXX_DEBUG -fPIC -fvisibility-inlines-hidden -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 -fvisibility=hidden  -fno-exceptions -funwind-tables -fno-rtti -UNDEBUG -std=c++17 -MD -MT lib/Target/RISCV/CMakeFiles/LLVMRISCVCodeGen.dir/RISCVISelLowering.cpp.o -MF lib/Target/RISCV/CMakeFiles/LLVMRISCVCodeGen.dir/RISCVISelLowering.cpp.o.d -o lib/Target/RISCV/CMakeFiles/LLVMRISCVCodeGen.dir/RISCVISelLowering.cpp.o -c /b/1/llvm-clang-x86_64-expensive-checks-debian/llvm-project/llvm/lib/Target/RISCV/RISCVISelLowering.cpp
/b/1/llvm-clang-x86_64-expensive-checks-debian/llvm-project/llvm/lib/Target/RISCV/RISCVISelLowering.cpp:6973:3: error: static_assert failed due to requirement 'RISCVISD::LAST_VL_VECTOR_OP - RISCVISD::FIRST_VL_VECTOR_OP == 139 && RISCVISD::LAST_STRICTFP_OPCODE - RISCVISD::FIRST_STRICTFP_OPCODE == 21 && "adding target specific op should update this function"'
  static_assert(
  ^
/b/1/llvm-clang-x86_64-expensive-checks-debian/llvm-project/llvm/lib/Target/RISCV/RISCVISelLowering.cpp:6997:3: error: static_assert failed due to requirement 'RISCVISD::LAST_VL_VECTOR_OP - RISCVISD::FIRST_VL_VECTOR_OP == 139 && RISCVISD::LAST_STRICTFP_OPCODE - RISCVISD::FIRST_STRICTFP_OPCODE == 21 && "adding target specific op should update this function"'
  static_assert(
  ^
2 errors generated.
41.052 [607/25/3496] Building CXX object lib/Target/RISCV/CMakeFiles/LLVMRISCVCodeGen.dir/RISCVVLOptimizer.cpp.o
41.055 [607/24/3497] Building CXX object lib/Target/RISCV/CMakeFiles/LLVMRISCVCodeGen.dir/RISCVExpandPseudoInsts.cpp.o
41.414 [607/23/3498] Building CXX object lib/Target/RISCV/AsmParser/CMakeFiles/LLVMRISCVAsmParser.dir/RISCVAsmParser.cpp.o
41.443 [607/22/3499] Building CXX object lib/Target/RISCV/CMakeFiles/LLVMRISCVCodeGen.dir/RISCVRegisterInfo.cpp.o
41.449 [607/21/3500] Building CXX object lib/Target/RISCV/CMakeFiles/LLVMRISCVCodeGen.dir/GISel/RISCVCallLowering.cpp.o
41.839 [607/20/3501] Building CXX object lib/Target/RISCV/CMakeFiles/LLVMRISCVCodeGen.dir/RISCVOptWInstrs.cpp.o
42.478 [607/19/3502] Building CXX object lib/Target/RISCV/CMakeFiles/LLVMRISCVCodeGen.dir/RISCVMachineFunctionInfo.cpp.o
42.651 [607/18/3503] Building CXX object lib/Target/RISCV/CMakeFiles/LLVMRISCVCodeGen.dir/RISCVGatherScatterLowering.cpp.o
42.931 [607/17/3504] Building CXX object lib/Target/RISCV/CMakeFiles/LLVMRISCVCodeGen.dir/GISel/RISCVLegalizerInfo.cpp.o
43.437 [607/16/3505] Building CXX object lib/Target/RISCV/CMakeFiles/LLVMRISCVCodeGen.dir/GISel/RISCVPostLegalizerCombiner.cpp.o
43.858 [607/15/3506] Building CXX object lib/Target/RISCV/CMakeFiles/LLVMRISCVCodeGen.dir/GISel/RISCVO0PreLegalizerCombiner.cpp.o
43.938 [607/14/3507] Building CXX object tools/llvm-exegesis/lib/RISCV/CMakeFiles/LLVMExegesisRISCV.dir/Target.cpp.o
44.202 [607/13/3508] Building CXX object lib/Target/RISCV/CMakeFiles/LLVMRISCVCodeGen.dir/RISCVAsmPrinter.cpp.o
44.222 [607/12/3509] Building CXX object lib/Target/RISCV/CMakeFiles/LLVMRISCVCodeGen.dir/GISel/RISCVPreLegalizerCombiner.cpp.o
45.488 [607/11/3510] Building CXX object lib/Target/RISCV/CMakeFiles/LLVMRISCVCodeGen.dir/RISCVTargetMachine.cpp.o
45.654 [607/10/3511] Building CXX object lib/Target/RISCV/CMakeFiles/LLVMRISCVCodeGen.dir/RISCVInstrInfo.cpp.o
46.514 [607/9/3512] Building AMDGPUGenRegisterBank.inc...
47.483 [607/8/3513] Building CXX object lib/Target/RISCV/CMakeFiles/LLVMRISCVCodeGen.dir/RISCVTargetTransformInfo.cpp.o
47.626 [607/7/3514] Building CXX object lib/Target/RISCV/Disassembler/CMakeFiles/LLVMRISCVDisassembler.dir/RISCVDisassembler.cpp.o
47.987 [607/6/3515] Building AMDGPUGenRegisterInfo.inc...
48.580 [607/5/3516] Building CXX object lib/Target/RISCV/MCTargetDesc/CMakeFiles/LLVMRISCVDesc.dir/RISCVMCTargetDesc.cpp.o
51.504 [607/4/3517] Building X86GenAsmMatcher.inc...
58.015 [607/3/3518] Building CXX object lib/Target/RISCV/CMakeFiles/LLVMRISCVCodeGen.dir/RISCVISelDAGToDAG.cpp.o
58.403 [607/2/3519] Building AMDGPUGenAsmMatcher.inc...
68.492 [607/1/3520] Building CXX object lib/Target/RISCV/CMakeFiles/LLVMRISCVCodeGen.dir/GISel/RISCVInstructionSelector.cpp.o
ninja: build stopped: subcommand failed.

```

</details>

https://github.com/llvm/llvm-project/pull/137039