[llvm] [NFC][AMDGPU] Assert no bad shift operations will happen (PR #108416)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

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

Full details are available at: https://lab.llvm.org/buildbot/#/builders/56/builds/8215

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

```
Step 5 (build-unified-tree) failure: build (failure)
...
In file included from /b/1/clang-x86_64-debian-fast/llvm.src/llvm/lib/Target/AMDGPU/AMDGPUTargetMachine.h:19:
/b/1/clang-x86_64-debian-fast/llvm.src/llvm/include/llvm/MC/MCStreamer.h:612:14: warning: parameter 'Sym' not found in the function declaration [-Wdocumentation]
  /// \param Sym - The symbol on the .ref directive.
             ^~~
/b/1/clang-x86_64-debian-fast/llvm.src/llvm/include/llvm/MC/MCStreamer.h:612:14: note: did you mean 'Symbol'?
  /// \param Sym - The symbol on the .ref directive.
             ^~~
             Symbol
7 warnings generated.
131.160 [164/44/5780] Building CXX object lib/Target/AMDGPU/CMakeFiles/LLVMAMDGPUCodeGen.dir/SIInstrInfo.cpp.o
FAILED: lib/Target/AMDGPU/CMakeFiles/LLVMAMDGPUCodeGen.dir/SIInstrInfo.cpp.o 
CCACHE_CPP2=yes CCACHE_HASHDIR=yes /usr/bin/ccache /usr/bin/clang++ -DGTEST_HAS_RTTI=0 -D_DEBUG -D_GLIBCXX_ASSERTIONS -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -I/b/1/clang-x86_64-debian-fast/llvm.obj/lib/Target/AMDGPU -I/b/1/clang-x86_64-debian-fast/llvm.src/llvm/lib/Target/AMDGPU -I/b/1/clang-x86_64-debian-fast/llvm.obj/include -I/b/1/clang-x86_64-debian-fast/llvm.src/llvm/include -std=c++11 -Wdocumentation -Wno-documentation-deprecated-sync -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/AMDGPU/CMakeFiles/LLVMAMDGPUCodeGen.dir/SIInstrInfo.cpp.o -MF lib/Target/AMDGPU/CMakeFiles/LLVMAMDGPUCodeGen.dir/SIInstrInfo.cpp.o.d -o lib/Target/AMDGPU/CMakeFiles/LLVMAMDGPUCodeGen.dir/SIInstrInfo.cpp.o -c /b/1/clang-x86_64-debian-fast/llvm.src/llvm/lib/Target/AMDGPU/SIInstrInfo.cpp
In file included from /b/1/clang-x86_64-debian-fast/llvm.src/llvm/lib/Target/AMDGPU/SIInstrInfo.cpp:18:
In file included from /b/1/clang-x86_64-debian-fast/llvm.src/llvm/lib/Target/AMDGPU/GCNSubtarget.h:21:
In file included from /b/1/clang-x86_64-debian-fast/llvm.src/llvm/lib/Target/AMDGPU/SIISelLowering.h:17:
In file included from /b/1/clang-x86_64-debian-fast/llvm.src/llvm/lib/Target/AMDGPU/AMDGPUISelLowering.h:19:
In file included from /b/1/clang-x86_64-debian-fast/llvm.src/llvm/include/llvm/CodeGen/TargetLowering.h:35:
In file included from /b/1/clang-x86_64-debian-fast/llvm.src/llvm/include/llvm/CodeGen/SelectionDAG.h:31:
/b/1/clang-x86_64-debian-fast/llvm.src/llvm/include/llvm/CodeGen/SelectionDAGNodes.h:2207:10: warning: HTML start tag prematurely ended, expected attribute name or '>' [-Wdocumentation]
  /// "<a, a+n, a+2n, a+3n, ...>" where a is integer and n is a non-zero integer,
         ^
/b/1/clang-x86_64-debian-fast/llvm.src/llvm/include/llvm/CodeGen/SelectionDAGNodes.h:2208:20: warning: HTML start tag prematurely ended, expected attribute name or '>' [-Wdocumentation]
  /// the value "<a,n>" is returned.
                   ^
/b/1/clang-x86_64-debian-fast/llvm.src/llvm/include/llvm/CodeGen/SelectionDAGNodes.h:2208:19: warning: HTML tag 'a' requires an end tag [-Wdocumentation-html]
  /// the value "<a,n>" is returned.
                  ^
/b/1/clang-x86_64-debian-fast/llvm.src/llvm/include/llvm/CodeGen/SelectionDAGNodes.h:2207:9: warning: HTML tag 'a' requires an end tag [-Wdocumentation-html]
  /// "<a, a+n, a+2n, a+3n, ...>" where a is integer and n is a non-zero integer,
        ^
In file included from /b/1/clang-x86_64-debian-fast/llvm.src/llvm/lib/Target/AMDGPU/SIInstrInfo.cpp:18:
In file included from /b/1/clang-x86_64-debian-fast/llvm.src/llvm/lib/Target/AMDGPU/GCNSubtarget.h:21:
In file included from /b/1/clang-x86_64-debian-fast/llvm.src/llvm/lib/Target/AMDGPU/SIISelLowering.h:17:
In file included from /b/1/clang-x86_64-debian-fast/llvm.src/llvm/lib/Target/AMDGPU/AMDGPUISelLowering.h:19:
/b/1/clang-x86_64-debian-fast/llvm.src/llvm/include/llvm/CodeGen/TargetLowering.h:5314:14: warning: parameter 'N' not found in the function declaration [-Wdocumentation]
  /// \param N Node to expand
             ^
In file included from /b/1/clang-x86_64-debian-fast/llvm.src/llvm/lib/Target/AMDGPU/SIInstrInfo.cpp:19:
In file included from /b/1/clang-x86_64-debian-fast/llvm.src/llvm/lib/Target/AMDGPU/SIMachineFunctionInfo.h:18:
In file included from /b/1/clang-x86_64-debian-fast/llvm.src/llvm/lib/Target/AMDGPU/AMDGPUTargetMachine.h:19:
In file included from /b/1/clang-x86_64-debian-fast/llvm.src/llvm/include/llvm/MC/MCStreamer.h:30:
/b/1/clang-x86_64-debian-fast/llvm.src/llvm/include/llvm/TargetParser/ARMTargetParser.h:267:12: warning: parameter 'Arch' not found in the function declaration [-Wdocumentation]
/// \param Arch the architecture name (e.g., "armv7s"). If it is an empty
           ^~~~
/b/1/clang-x86_64-debian-fast/llvm.src/llvm/include/llvm/TargetParser/ARMTargetParser.h:267:12: note: did you mean 'MArch'?
/// \param Arch the architecture name (e.g., "armv7s"). If it is an empty
           ^~~~
           MArch
In file included from /b/1/clang-x86_64-debian-fast/llvm.src/llvm/lib/Target/AMDGPU/SIInstrInfo.cpp:19:

```

</details>

https://github.com/llvm/llvm-project/pull/108416