llvm-ci wrote:

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

Full details are available at: 
https://lab.llvm.org/buildbot/#/builders/116/builds/30154

<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)
...
                 from 
/vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.src/llvm/lib/Target/X86/X86TargetMachine.cpp:13:
/vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.src/llvm/include/llvm/CodeGenTypes/LowLevelType.h:632:15:
 warning: ‘llvm::LLT::Info’ is too small to hold all values of ‘enum class 
llvm::LLT::Kind’
   Kind Info : 4;
               ^
In file included from 
/vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.src/llvm/include/llvm/CodeGen/MachineScheduler.h:88:0,
                 from 
/vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.src/llvm/lib/Target/X86/X86TargetMachine.cpp:35:
/vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.src/llvm/include/llvm/CodeGen/ScheduleDAG.h:322:0:
 warning: ‘llvm::SUnit::SchedulingPref’ is too small to hold all values of 
‘enum llvm::Sched::Preference’
     Sched::Preference SchedulingPref : 4; ///< Scheduling preference.
 
828.775 [2959/16/2381] Building CXX object 
lib/Target/X86/MCTargetDesc/CMakeFiles/LLVMX86Desc.dir/X86MCLFIRewriter.cpp.o
FAILED: 
lib/Target/X86/MCTargetDesc/CMakeFiles/LLVMX86Desc.dir/X86MCLFIRewriter.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/lib/Target/X86/MCTargetDesc 
-I/vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.src/llvm/lib/Target/X86/MCTargetDesc
 -I/vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.src/llvm/lib/Target/X86 
-I/vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.obj/lib/Target/X86 
-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 -O3 -DNDEBUG 
-fvisibility=hidden -UNDEBUG -fno-exceptions -funwind-tables -fno-rtti 
-std=c++1z -MD -MT 
lib/Target/X86/MCTargetDesc/CMakeFiles/LLVMX86Desc.dir/X86MCLFIRewriter.cpp.o 
-MF 
lib/Target/X86/MCTargetDesc/CMakeFiles/LLVMX86Desc.dir/X86MCLFIRewriter.cpp.o.d 
-o 
lib/Target/X86/MCTargetDesc/CMakeFiles/LLVMX86Desc.dir/X86MCLFIRewriter.cpp.o 
-c 
/vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.src/llvm/lib/Target/X86/MCTargetDesc/X86MCLFIRewriter.cpp
/vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.src/llvm/lib/Target/X86/MCTargetDesc/X86MCLFIRewriter.cpp:
 In function ‘bool isGR64OrNone(llvm::MCRegister)’:
/vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.src/llvm/lib/Target/X86/MCTargetDesc/X86MCLFIRewriter.cpp:69:10:
 error: ‘X86MCRegisterClasses’ was not declared in this scope
          X86MCRegisterClasses[X86::GR64RegClassID].contains(Reg);
          ^~~~~~~~~~~~~~~~~~~~
/vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.src/llvm/lib/Target/X86/MCTargetDesc/X86MCLFIRewriter.cpp:
 In member function ‘void llvm::X86::X86MCLFIRewriter::rewriteFSAccess(const 
llvm::MCInst&, llvm::MCStreamer&, const llvm::MCSubtargetInfo&)’:
/vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.src/llvm/lib/Target/X86/MCTargetDesc/X86MCLFIRewriter.cpp:176:9:
 error: ‘X86MCRegisterClasses’ was not declared in this scope
         X86MCRegisterClasses[X86::GR64RegClassID].contains(DestReg) &&
         ^~~~~~~~~~~~~~~~~~~~
829.812 [2959/15/2382] Building CXX object 
lib/Target/X86/MCTargetDesc/CMakeFiles/LLVMX86Desc.dir/X86MachObjectWriter.cpp.o
829.916 [2959/14/2383] Building CXX object 
lib/Target/X86/TargetInfo/CMakeFiles/LLVMX86Info.dir/X86TargetInfo.cpp.o
830.164 [2959/13/2384] Building CXX object 
lib/Target/X86/MCTargetDesc/CMakeFiles/LLVMX86Desc.dir/X86WinCOFFStreamer.cpp.o
830.384 [2959/12/2385] Building CXX object 
lib/Target/X86/MCTargetDesc/CMakeFiles/LLVMX86Desc.dir/X86ELFObjectWriter.cpp.o
830.412 [2959/11/2386] Building CXX object 
lib/Target/X86/MCTargetDesc/CMakeFiles/LLVMX86Desc.dir/X86WinCOFFObjectWriter.cpp.o
831.755 [2959/10/2387] Building CXX object 
lib/Target/X86/CMakeFiles/LLVMX86CodeGen.dir/GISel/X86InstructionSelector.cpp.o
In file included from 
/vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.src/llvm/include/llvm/CodeGen/MachineMemOperand.h:22:0,
                 from 
/vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.src/llvm/include/llvm/CodeGen/MachineInstr.h:26,
                 from 
/vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.src/llvm/include/llvm/CodeGen/MachineBasicBlock.h:22,
                 from 
/vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.src/llvm/include/llvm/CodeGen/MachineFunction.h:26,
                 from 
/vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.src/llvm/include/llvm/CodeGen/MachineFunctionPass.h:21,
                 from 
/vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.src/llvm/include/llvm/CodeGen/SelectionDAGISel.h:18,
                 from 
/vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.src/llvm/lib/Target/X86/X86.h:18,
                 from 
/vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.src/llvm/lib/Target/X86/GISel/X86InstructionSelector.cpp:15:
/vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.src/llvm/include/llvm/CodeGenTypes/LowLevelType.h:632:15:
 warning: ‘llvm::LLT::Info’ is too small to hold all values of ‘enum class 
llvm::LLT::Kind’
   Kind Info : 4;
               ^
831.959 [2959/9/2388] Building CXX object 
lib/Target/X86/CMakeFiles/LLVMX86CodeGen.dir/GISel/X86PreLegalizerCombiner.cpp.o
In file included from 
/vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.src/llvm/include/llvm/CodeGen/MachineMemOperand.h:22:0,
                 from 
/vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.src/llvm/include/llvm/CodeGen/MachineInstr.h:26,
                 from 
/vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.src/llvm/include/llvm/CodeGen/MachineBasicBlock.h:22,
                 from 
/vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.src/llvm/include/llvm/CodeGen/MachineFunction.h:26,
                 from 
/vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.src/llvm/include/llvm/CodeGen/MachineFunctionPass.h:21,
                 from 
/vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.src/llvm/include/llvm/CodeGen/SelectionDAGISel.h:18,
                 from 
/vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.src/llvm/lib/Target/X86/X86.h:18,
                 from 
/vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.src/llvm/lib/Target/X86/GISel/X86PreLegalizerCombiner.cpp:13:
/vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.src/llvm/include/llvm/CodeGenTypes/LowLevelType.h:632:15:
 warning: ‘llvm::LLT::Info’ is too small to hold all values of ‘enum class 
llvm::LLT::Kind’
   Kind Info : 4;
               ^

```

</details>

https://github.com/llvm/llvm-project/pull/189569
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