[llvm] [NFC][MI] Tidy Up RegState enum use (1/2) (PR #176091)

LLVM Continuous Integration via llvm-commits llvm-commits at lists.llvm.org
Thu Jan 15 10:23:29 PST 2026 

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `bolt-x86_64-ubuntu-nfc` running on `bolt-worker` while building `llvm` at step 7 "build-bolt".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/92/builds/30406

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

```
Step 7 (build-bolt) failure: build (failure)
0.011 [312/5/1] Performing build step for 'bolt_rt'
ninja: no work to do.
0.015 [311/5/2] Generating VCSVersion.inc
0.015 [309/4/3] Generating VCSRevision.h
0.024 [292/18/4] No install step for 'bolt_rt'
4.245 [291/18/5] Building CXX object lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/ExpandPostRAPseudos.cpp.o
FAILED: lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/ExpandPostRAPseudos.cpp.o 
ccache /usr/bin/c++ -D_DEBUG -D_GLIBCXX_ASSERTIONS -D_GLIBCXX_USE_CXX11_ABI=1 -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -I/home/worker/bolt-worker2/bolt-x86_64-ubuntu-nfc/build/lib/CodeGen -I/home/worker/bolt-worker2/bolt-x86_64-ubuntu-nfc/llvm-project/llvm/lib/CodeGen -I/home/worker/bolt-worker2/bolt-x86_64-ubuntu-nfc/build/include -I/home/worker/bolt-worker2/bolt-x86_64-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-redundant-move -Wno-pessimizing-move -Wno-array-bounds -Wno-stringop-overread -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 -UNDEBUG -fno-exceptions -funwind-tables -fno-rtti -std=c++17 -MD -MT lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/ExpandPostRAPseudos.cpp.o -MF lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/ExpandPostRAPseudos.cpp.o.d -o lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/ExpandPostRAPseudos.cpp.o -c /home/worker/bolt-worker2/bolt-x86_64-ubuntu-nfc/llvm-project/llvm/lib/CodeGen/ExpandPostRAPseudos.cpp
In file included from /usr/include/c++/11/cassert:44,
                 from /home/worker/bolt-worker2/bolt-x86_64-ubuntu-nfc/llvm-project/llvm/include/llvm/CodeGen/MachineInstrBuilder.h:34,
                 from /home/worker/bolt-worker2/bolt-x86_64-ubuntu-nfc/llvm-project/llvm/include/llvm/CodeGen/TargetInstrInfo.h:26,
                 from /home/worker/bolt-worker2/bolt-x86_64-ubuntu-nfc/llvm-project/llvm/lib/CodeGen/ExpandPostRAPseudos.cpp:20:
/home/worker/bolt-worker2/bolt-x86_64-ubuntu-nfc/llvm-project/llvm/include/llvm/CodeGen/MachineInstrBuilder.h: In function ‘constexpr unsigned int llvm::getRegState(const llvm::MachineOperand&)’:
/home/worker/bolt-worker2/bolt-x86_64-ubuntu-nfc/llvm-project/llvm/include/llvm/CodeGen/MachineInstrBuilder.h:112:21: error: call to non-‘constexpr’ function ‘bool llvm::MachineOperand::isReg() const’
  112 |   assert(RegOp.isReg() && "Not a register operand");
      |          ~~~~~~~~~~~^~
In file included from /home/worker/bolt-worker2/bolt-x86_64-ubuntu-nfc/llvm-project/llvm/include/llvm/CodeGen/MachineInstr.h:26,
                 from /home/worker/bolt-worker2/bolt-x86_64-ubuntu-nfc/llvm-project/llvm/include/llvm/CodeGen/MachineBasicBlock.h:22,
                 from /home/worker/bolt-worker2/bolt-x86_64-ubuntu-nfc/llvm-project/llvm/include/llvm/CodeGen/MachineFunction.h:26,
                 from /home/worker/bolt-worker2/bolt-x86_64-ubuntu-nfc/llvm-project/llvm/include/llvm/CodeGen/MachinePassManager.h:26,
                 from /home/worker/bolt-worker2/bolt-x86_64-ubuntu-nfc/llvm-project/llvm/include/llvm/CodeGen/ExpandPostRAPseudos.h:12,
                 from /home/worker/bolt-worker2/bolt-x86_64-ubuntu-nfc/llvm-project/llvm/lib/CodeGen/ExpandPostRAPseudos.cpp:14:
/home/worker/bolt-worker2/bolt-x86_64-ubuntu-nfc/llvm-project/llvm/include/llvm/CodeGen/MachineOperand.h:331:8: note: ‘bool llvm::MachineOperand::isReg() const’ declared here
  331 |   bool isReg() const { return OpKind == MO_Register; }
      |        ^~~~~
4.420 [291/17/6] Building CXX object lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/BasicBlockPathCloning.cpp.o
FAILED: lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/BasicBlockPathCloning.cpp.o 
ccache /usr/bin/c++ -D_DEBUG -D_GLIBCXX_ASSERTIONS -D_GLIBCXX_USE_CXX11_ABI=1 -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -I/home/worker/bolt-worker2/bolt-x86_64-ubuntu-nfc/build/lib/CodeGen -I/home/worker/bolt-worker2/bolt-x86_64-ubuntu-nfc/llvm-project/llvm/lib/CodeGen -I/home/worker/bolt-worker2/bolt-x86_64-ubuntu-nfc/build/include -I/home/worker/bolt-worker2/bolt-x86_64-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-redundant-move -Wno-pessimizing-move -Wno-array-bounds -Wno-stringop-overread -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 -UNDEBUG -fno-exceptions -funwind-tables -fno-rtti -std=c++17 -MD -MT lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/BasicBlockPathCloning.cpp.o -MF lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/BasicBlockPathCloning.cpp.o.d -o lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/BasicBlockPathCloning.cpp.o -c /home/worker/bolt-worker2/bolt-x86_64-ubuntu-nfc/llvm-project/llvm/lib/CodeGen/BasicBlockPathCloning.cpp
In file included from /usr/include/c++/11/cassert:44,
                 from /home/worker/bolt-worker2/bolt-x86_64-ubuntu-nfc/llvm-project/llvm/include/llvm/CodeGen/MachineInstrBuilder.h:34,
                 from /home/worker/bolt-worker2/bolt-x86_64-ubuntu-nfc/llvm-project/llvm/include/llvm/CodeGen/TargetInstrInfo.h:26,
                 from /home/worker/bolt-worker2/bolt-x86_64-ubuntu-nfc/llvm-project/llvm/lib/CodeGen/BasicBlockPathCloning.cpp:42:
/home/worker/bolt-worker2/bolt-x86_64-ubuntu-nfc/llvm-project/llvm/include/llvm/CodeGen/MachineInstrBuilder.h: In function ‘constexpr unsigned int llvm::getRegState(const llvm::MachineOperand&)’:
/home/worker/bolt-worker2/bolt-x86_64-ubuntu-nfc/llvm-project/llvm/include/llvm/CodeGen/MachineInstrBuilder.h:112:21: error: call to non-‘constexpr’ function ‘bool llvm::MachineOperand::isReg() const’
  112 |   assert(RegOp.isReg() && "Not a register operand");
      |          ~~~~~~~~~~~^~
In file included from /home/worker/bolt-worker2/bolt-x86_64-ubuntu-nfc/llvm-project/llvm/include/llvm/CodeGen/MachineInstr.h:26,
                 from /home/worker/bolt-worker2/bolt-x86_64-ubuntu-nfc/llvm-project/llvm/include/llvm/CodeGen/MachineBasicBlock.h:22,
                 from /home/worker/bolt-worker2/bolt-x86_64-ubuntu-nfc/llvm-project/llvm/include/llvm/CodeGen/MachineFunction.h:26,
                 from /home/worker/bolt-worker2/bolt-x86_64-ubuntu-nfc/llvm-project/llvm/lib/CodeGen/BasicBlockPathCloning.cpp:39:
/home/worker/bolt-worker2/bolt-x86_64-ubuntu-nfc/llvm-project/llvm/include/llvm/CodeGen/MachineOperand.h:331:8: note: ‘bool llvm::MachineOperand::isReg() const’ declared here
  331 |   bool isReg() const { return OpKind == MO_Register; }
      |        ^~~~~
4.579 [291/16/7] Building CXX object lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/ExecutionDomainFix.cpp.o
FAILED: lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/ExecutionDomainFix.cpp.o 
ccache /usr/bin/c++ -D_DEBUG -D_GLIBCXX_ASSERTIONS -D_GLIBCXX_USE_CXX11_ABI=1 -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -I/home/worker/bolt-worker2/bolt-x86_64-ubuntu-nfc/build/lib/CodeGen -I/home/worker/bolt-worker2/bolt-x86_64-ubuntu-nfc/llvm-project/llvm/lib/CodeGen -I/home/worker/bolt-worker2/bolt-x86_64-ubuntu-nfc/build/include -I/home/worker/bolt-worker2/bolt-x86_64-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-redundant-move -Wno-pessimizing-move -Wno-array-bounds -Wno-stringop-overread -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 -UNDEBUG -fno-exceptions -funwind-tables -fno-rtti -std=c++17 -MD -MT lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/ExecutionDomainFix.cpp.o -MF lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/ExecutionDomainFix.cpp.o.d -o lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/ExecutionDomainFix.cpp.o -c /home/worker/bolt-worker2/bolt-x86_64-ubuntu-nfc/llvm-project/llvm/lib/CodeGen/ExecutionDomainFix.cpp
In file included from /usr/include/c++/11/cassert:44,
                 from /home/worker/bolt-worker2/bolt-x86_64-ubuntu-nfc/llvm-project/llvm/include/llvm/CodeGen/MachineInstrBuilder.h:34,
                 from /home/worker/bolt-worker2/bolt-x86_64-ubuntu-nfc/llvm-project/llvm/include/llvm/CodeGen/TargetInstrInfo.h:26,
                 from /home/worker/bolt-worker2/bolt-x86_64-ubuntu-nfc/llvm-project/llvm/lib/CodeGen/ExecutionDomainFix.cpp:11:

```

</details>

https://github.com/llvm/llvm-project/pull/176091

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