[Mlir-commits] [mlir] [MLIR] Fix -Wunused-variable (PR #192698)

[LLVM Continuous Integration]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `mlir-nvidia-gcc7` running on `mlir-nvidia` while building `mlir` at step 6 "build-check-mlir-build-only".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/116/builds/27491

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

```
Step 6 (build-check-mlir-build-only) failure: build (failure)
...
39.110 [219/2/5058] Linking CXX static library lib/libLLVMAsmPrinter.a
39.240 [217/3/5059] Linking CXX static library lib/libLLVMNVPTXCodeGen.a
39.293 [216/3/5060] Linking CXX static library lib/libMLIRNVVMTarget.a
39.415 [216/2/5061] Linking CXX static library lib/libLLVMX86CodeGen.a
39.468 [212/5/5062] Linking CXX static library lib/libMLIRExecutionEngine.a
39.468 [211/5/5063] Linking CXX static library lib/libMLIRTargetLLVMIRTransforms.a
39.517 [211/4/5064] Linking CXX static library lib/libMLIRCAPIExecutionEngine.a
40.207 [211/3/5065] Linking CXX executable bin/lli
40.346 [211/2/5066] Linking CXX executable bin/llc
45.419 [211/1/5067] Building CXX object tools/mlir/lib/Dialect/Vector/IR/CMakeFiles/obj.MLIRVectorDialect.dir/VectorOps.cpp.o
FAILED: tools/mlir/lib/Dialect/Vector/IR/CMakeFiles/obj.MLIRVectorDialect.dir/VectorOps.cpp.o 
CCACHE_CPP2=yes CCACHE_HASHDIR=yes CCACHE_SLOPPINESS=pch_defines,time_macros /usr/bin/ccache /usr/bin/g++-7 -D_DEBUG -D_GLIBCXX_ASSERTIONS -D_GLIBCXX_USE_CXX11_ABI=1 -D_GNU_SOURCE -D_LIBCPP_HARDENING_MODE=_LIBCPP_HARDENING_MODE_EXTENSIVE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -I/vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.obj/tools/mlir/lib/Dialect/Vector/IR -I/vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.src/mlir/lib/Dialect/Vector/IR -I/vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.obj/tools/mlir/include -I/vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.src/mlir/include -I/vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.obj/include -I/vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.src/llvm/include -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -Werror=date-time -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wno-missing-field-initializers -pedantic -Wno-long-long -Wimplicit-fallthrough -Wno-uninitialized -Wno-nonnull -Wno-array-bounds -Wno-noexcept-type -Wdelete-non-virtual-dtor -Wno-comment -Wno-misleading-indentation -fdiagnostics-color -ffunction-sections -fdata-sections -Wundef -Wno-unused-but-set-parameter -Wno-deprecated-copy -O3 -DNDEBUG -UNDEBUG -fno-exceptions -funwind-tables -fno-rtti -std=c++1z -MD -MT tools/mlir/lib/Dialect/Vector/IR/CMakeFiles/obj.MLIRVectorDialect.dir/VectorOps.cpp.o -MF tools/mlir/lib/Dialect/Vector/IR/CMakeFiles/obj.MLIRVectorDialect.dir/VectorOps.cpp.o.d -o tools/mlir/lib/Dialect/Vector/IR/CMakeFiles/obj.MLIRVectorDialect.dir/VectorOps.cpp.o -c /vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.src/mlir/lib/Dialect/Vector/IR/VectorOps.cpp
In file included from /usr/include/c++/7/cassert:44:0,
                 from /vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.src/mlir/lib/Dialect/Vector/IR/VectorOps.cpp:51:
/vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.src/mlir/lib/Dialect/Vector/IR/VectorOps.cpp: In member function ‘mlir::OpFoldResult mlir::vector::ShuffleOp::fold(mlir::vector::ShuffleOp::FoldAdaptor)’:
/vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.src/mlir/lib/Dialect/Vector/IR/VectorOps.cpp:3457:35: error: invalid use of member function ‘mlir::VectorType mlir::vector::ShuffleOp::getV2VectorType()’ (did you forget the ‘()’ ?)
   assert(!v1Type.isScalable() && !getV2VectorType.isScalable() &&
                                   ^
/vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.src/mlir/lib/Dialect/Vector/IR/VectorOps.cpp:3457:51: error: expected ‘)’ before ‘isScalable’
   assert(!v1Type.isScalable() && !getV2VectorType.isScalable() &&
                                                   ^
/vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.src/mlir/lib/Dialect/Vector/IR/VectorOps.cpp:3457:51: error: expected ‘)’ before ‘isScalable’
/vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.src/mlir/lib/Dialect/Vector/IR/VectorOps.cpp: In member function ‘virtual llvm::LogicalResult {anonymous}::StridedSliceCreateMaskFolder::matchAndRewrite(mlir::vector::ExtractStridedSliceOp, mlir::PatternRewriter&) const’:
/vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.src/mlir/lib/Dialect/Vector/IR/VectorOps.cpp:4780:51: warning: unused variable ‘sliceSize’ [-Wunused-variable]
     for (auto [maskDimSize, sliceOffset, sliceSize] :
                                                   ^
At global scope:
cc1plus: warning: unrecognized command line option ‘-Wno-deprecated-copy’
ninja: build stopped: subcommand failed.

```

</details>

https://github.com/llvm/llvm-project/pull/192698