[llvm] [IVDescriptors] Address MonotonicDescriptor post-commit comments (NFC) (PR #223328)

LLVM Continuous Integration via llvm-commits llvm-commits at lists.llvm.org
Mon Sep 14 04:19:54 PDT 2026 

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `bolt-aarch64-ubuntu-nfc` running on `bolt-worker-aarch64` while building `llvm` at step 9 "build-bolt".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/217/builds/20502

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

```
Step 9 (build-bolt) failure: build (failure)
0.628 [268/3/1] Performing build step for 'bolt_rt'
ninja: no work to do.
0.633 [267/3/2] Generating VCSVersion.inc
0.633 [265/2/3] Generating VCSRevision.h
0.643 [226/34/4] No install step for 'bolt_rt'
3.979 [225/34/5] Building CXX object lib/Transforms/Utils/CMakeFiles/LLVMTransformUtils.dir/RelLookupTableConverter.cpp.o
FAILED: lib/Transforms/Utils/CMakeFiles/LLVMTransformUtils.dir/RelLookupTableConverter.cpp.o 
ccache /usr/bin/c++ -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/home/buildbot/workspace/bolt-aarch64-ubuntu-nfc/build/lib/Transforms/Utils -I/home/buildbot/workspace/bolt-aarch64-ubuntu-nfc/llvm-project/llvm/lib/Transforms/Utils -I/home/buildbot/workspace/bolt-aarch64-ubuntu-nfc/build/include -I/home/buildbot/workspace/bolt-aarch64-ubuntu-nfc/llvm-project/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-class-memaccess -Wno-dangling-reference -Wno-redundant-move -Wno-pessimizing-move -Wno-array-bounds -Wno-stringop-overread -Wno-dangling-pointer -Wno-unused-but-set-parameter -Wno-noexcept-type -Wdelete-non-virtual-dtor -Wsuggest-override -Wno-comment -Wno-misleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -ffunction-sections -fdata-sections -O3 -DNDEBUG -std=c++17 -UNDEBUG -fno-exceptions -funwind-tables -fno-rtti -MD -MT lib/Transforms/Utils/CMakeFiles/LLVMTransformUtils.dir/RelLookupTableConverter.cpp.o -MF lib/Transforms/Utils/CMakeFiles/LLVMTransformUtils.dir/RelLookupTableConverter.cpp.o.d -o lib/Transforms/Utils/CMakeFiles/LLVMTransformUtils.dir/RelLookupTableConverter.cpp.o -c /home/buildbot/workspace/bolt-aarch64-ubuntu-nfc/llvm-project/llvm/lib/Transforms/Utils/RelLookupTableConverter.cpp
In file included from /home/buildbot/workspace/bolt-aarch64-ubuntu-nfc/llvm-project/llvm/include/llvm/Analysis/TargetTransformInfo.h:28,
                 from /home/buildbot/workspace/bolt-aarch64-ubuntu-nfc/llvm-project/llvm/lib/Transforms/Utils/RelLookupTableConverter.cpp:16:
/home/buildbot/workspace/bolt-aarch64-ubuntu-nfc/llvm-project/llvm/include/llvm/Analysis/IVDescriptors.h:545:19: error: declaration of ‘llvm::SCEVNoWrapFlags llvm::MonotonicDescriptor::SCEVNoWrapFlags’ changes meaning of ‘SCEVNoWrapFlags’ [-Wchanges-meaning]
  545 |   SCEVNoWrapFlags SCEVNoWrapFlags{};
      |                   ^~~~~~~~~~~~~~~
/home/buildbot/workspace/bolt-aarch64-ubuntu-nfc/llvm-project/llvm/include/llvm/Analysis/IVDescriptors.h:545:3: note: used here to mean ‘enum class llvm::SCEVNoWrapFlags’
  545 |   SCEVNoWrapFlags SCEVNoWrapFlags{};
      |   ^~~~~~~~~~~~~~~
/home/buildbot/workspace/bolt-aarch64-ubuntu-nfc/llvm-project/llvm/include/llvm/Analysis/IVDescriptors.h:33:12: note: declared here
   33 | enum class SCEVNoWrapFlags;
      |            ^~~~~~~~~~~~~~~
4.055 [225/33/6] Building CXX object lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/ExpandReductions.cpp.o
FAILED: lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/ExpandReductions.cpp.o 
ccache /usr/bin/c++ -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/home/buildbot/workspace/bolt-aarch64-ubuntu-nfc/build/lib/CodeGen -I/home/buildbot/workspace/bolt-aarch64-ubuntu-nfc/llvm-project/llvm/lib/CodeGen -I/home/buildbot/workspace/bolt-aarch64-ubuntu-nfc/build/include -I/home/buildbot/workspace/bolt-aarch64-ubuntu-nfc/llvm-project/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-class-memaccess -Wno-dangling-reference -Wno-redundant-move -Wno-pessimizing-move -Wno-array-bounds -Wno-stringop-overread -Wno-dangling-pointer -Wno-unused-but-set-parameter -Wno-noexcept-type -Wdelete-non-virtual-dtor -Wsuggest-override -Wno-comment -Wno-misleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -ffunction-sections -fdata-sections -O3 -DNDEBUG -std=c++17 -UNDEBUG -fno-exceptions -funwind-tables -fno-rtti -MD -MT lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/ExpandReductions.cpp.o -MF lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/ExpandReductions.cpp.o.d -o lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/ExpandReductions.cpp.o -c /home/buildbot/workspace/bolt-aarch64-ubuntu-nfc/llvm-project/llvm/lib/CodeGen/ExpandReductions.cpp
In file included from /home/buildbot/workspace/bolt-aarch64-ubuntu-nfc/llvm-project/llvm/include/llvm/Analysis/TargetTransformInfo.h:28,
                 from /home/buildbot/workspace/bolt-aarch64-ubuntu-nfc/llvm-project/llvm/lib/CodeGen/ExpandReductions.cpp:16:
/home/buildbot/workspace/bolt-aarch64-ubuntu-nfc/llvm-project/llvm/include/llvm/Analysis/IVDescriptors.h:545:19: error: declaration of ‘llvm::SCEVNoWrapFlags llvm::MonotonicDescriptor::SCEVNoWrapFlags’ changes meaning of ‘SCEVNoWrapFlags’ [-Wchanges-meaning]
  545 |   SCEVNoWrapFlags SCEVNoWrapFlags{};
      |                   ^~~~~~~~~~~~~~~
/home/buildbot/workspace/bolt-aarch64-ubuntu-nfc/llvm-project/llvm/include/llvm/Analysis/IVDescriptors.h:545:3: note: used here to mean ‘enum class llvm::SCEVNoWrapFlags’
  545 |   SCEVNoWrapFlags SCEVNoWrapFlags{};
      |   ^~~~~~~~~~~~~~~
/home/buildbot/workspace/bolt-aarch64-ubuntu-nfc/llvm-project/llvm/include/llvm/Analysis/IVDescriptors.h:33:12: note: declared here
   33 | enum class SCEVNoWrapFlags;
      |            ^~~~~~~~~~~~~~~
4.121 [225/32/7] Building CXX object lib/Transforms/Utils/CMakeFiles/LLVMTransformUtils.dir/CanonicalizeFreezeInLoops.cpp.o
FAILED: lib/Transforms/Utils/CMakeFiles/LLVMTransformUtils.dir/CanonicalizeFreezeInLoops.cpp.o 
ccache /usr/bin/c++ -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/home/buildbot/workspace/bolt-aarch64-ubuntu-nfc/build/lib/Transforms/Utils -I/home/buildbot/workspace/bolt-aarch64-ubuntu-nfc/llvm-project/llvm/lib/Transforms/Utils -I/home/buildbot/workspace/bolt-aarch64-ubuntu-nfc/build/include -I/home/buildbot/workspace/bolt-aarch64-ubuntu-nfc/llvm-project/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-class-memaccess -Wno-dangling-reference -Wno-redundant-move -Wno-pessimizing-move -Wno-array-bounds -Wno-stringop-overread -Wno-dangling-pointer -Wno-unused-but-set-parameter -Wno-noexcept-type -Wdelete-non-virtual-dtor -Wsuggest-override -Wno-comment -Wno-misleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -ffunction-sections -fdata-sections -O3 -DNDEBUG -std=c++17 -UNDEBUG -fno-exceptions -funwind-tables -fno-rtti -MD -MT lib/Transforms/Utils/CMakeFiles/LLVMTransformUtils.dir/CanonicalizeFreezeInLoops.cpp.o -MF lib/Transforms/Utils/CMakeFiles/LLVMTransformUtils.dir/CanonicalizeFreezeInLoops.cpp.o.d -o lib/Transforms/Utils/CMakeFiles/LLVMTransformUtils.dir/CanonicalizeFreezeInLoops.cpp.o -c /home/buildbot/workspace/bolt-aarch64-ubuntu-nfc/llvm-project/llvm/lib/Transforms/Utils/CanonicalizeFreezeInLoops.cpp
In file included from /home/buildbot/workspace/bolt-aarch64-ubuntu-nfc/llvm-project/llvm/lib/Transforms/Utils/CanonicalizeFreezeInLoops.cpp:35:
/home/buildbot/workspace/bolt-aarch64-ubuntu-nfc/llvm-project/llvm/include/llvm/Analysis/IVDescriptors.h:545:19: error: declaration of ‘llvm::SCEVNoWrapFlags llvm::MonotonicDescriptor::SCEVNoWrapFlags’ changes meaning of ‘SCEVNoWrapFlags’ [-Wchanges-meaning]
  545 |   SCEVNoWrapFlags SCEVNoWrapFlags{};
      |                   ^~~~~~~~~~~~~~~
/home/buildbot/workspace/bolt-aarch64-ubuntu-nfc/llvm-project/llvm/include/llvm/Analysis/IVDescriptors.h:545:3: note: used here to mean ‘enum class llvm::SCEVNoWrapFlags’
  545 |   SCEVNoWrapFlags SCEVNoWrapFlags{};
      |   ^~~~~~~~~~~~~~~
/home/buildbot/workspace/bolt-aarch64-ubuntu-nfc/llvm-project/llvm/include/llvm/Analysis/IVDescriptors.h:33:12: note: declared here
   33 | enum class SCEVNoWrapFlags;
      |            ^~~~~~~~~~~~~~~
4.232 [225/31/8] Building CXX object lib/Transforms/Utils/CMakeFiles/LLVMTransformUtils.dir/MoveAutoInit.cpp.o
FAILED: lib/Transforms/Utils/CMakeFiles/LLVMTransformUtils.dir/MoveAutoInit.cpp.o 
ccache /usr/bin/c++ -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/home/buildbot/workspace/bolt-aarch64-ubuntu-nfc/build/lib/Transforms/Utils -I/home/buildbot/workspace/bolt-aarch64-ubuntu-nfc/llvm-project/llvm/lib/Transforms/Utils -I/home/buildbot/workspace/bolt-aarch64-ubuntu-nfc/build/include -I/home/buildbot/workspace/bolt-aarch64-ubuntu-nfc/llvm-project/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-class-memaccess -Wno-dangling-reference -Wno-redundant-move -Wno-pessimizing-move -Wno-array-bounds -Wno-stringop-overread -Wno-dangling-pointer -Wno-unused-but-set-parameter -Wno-noexcept-type -Wdelete-non-virtual-dtor -Wsuggest-override -Wno-comment -Wno-misleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -ffunction-sections -fdata-sections -O3 -DNDEBUG -std=c++17 -UNDEBUG -fno-exceptions -funwind-tables -fno-rtti -MD -MT lib/Transforms/Utils/CMakeFiles/LLVMTransformUtils.dir/MoveAutoInit.cpp.o -MF lib/Transforms/Utils/CMakeFiles/LLVMTransformUtils.dir/MoveAutoInit.cpp.o.d -o lib/Transforms/Utils/CMakeFiles/LLVMTransformUtils.dir/MoveAutoInit.cpp.o -c /home/buildbot/workspace/bolt-aarch64-ubuntu-nfc/llvm-project/llvm/lib/Transforms/Utils/MoveAutoInit.cpp
In file included from /home/buildbot/workspace/bolt-aarch64-ubuntu-nfc/llvm-project/llvm/include/llvm/Analysis/TargetTransformInfo.h:28,

```

</details>

https://github.com/llvm/llvm-project/pull/223328

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