[clang] [llvm] [AMDGPU] Add initial support for VGPR as memory (PR #205435)

[via cfe-commits]

github-actions[bot] wrote:

<!--PREMERGE ADVISOR COMMENT: Linux-->
# :penguin: Linux x64 Test Results

The build failed before running any tests. Click on a failure below to see the details.

<details>
<summary>lib/Target/AMDGPU/CMakeFiles/LLVMAMDGPUCodeGen.dir/AMDGPUResourceUsageAnalysis.cpp.o</summary>

```
FAILED: lib/Target/AMDGPU/CMakeFiles/LLVMAMDGPUCodeGen.dir/AMDGPUResourceUsageAnalysis.cpp.o
sccache /opt/llvm/bin/clang++ -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/gha/actions-runner/_work/llvm-project/llvm-project/build/lib/Target/AMDGPU -I/home/gha/actions-runner/_work/llvm-project/llvm-project/llvm/lib/Target/AMDGPU -I/home/gha/actions-runner/_work/llvm-project/llvm-project/build/include -I/home/gha/actions-runner/_work/llvm-project/llvm-project/llvm/include -gmlt -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -Werror -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 -Wno-pass-failed -Wmisleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -ffunction-sections -fdata-sections -O3 -DNDEBUG -std=c++17 -fvisibility=hidden -UNDEBUG -fno-exceptions -funwind-tables -fno-rtti -MD -MT lib/Target/AMDGPU/CMakeFiles/LLVMAMDGPUCodeGen.dir/AMDGPUResourceUsageAnalysis.cpp.o -MF lib/Target/AMDGPU/CMakeFiles/LLVMAMDGPUCodeGen.dir/AMDGPUResourceUsageAnalysis.cpp.o.d -o lib/Target/AMDGPU/CMakeFiles/LLVMAMDGPUCodeGen.dir/AMDGPUResourceUsageAnalysis.cpp.o -c /home/gha/actions-runner/_work/llvm-project/llvm-project/llvm/lib/Target/AMDGPU/AMDGPUResourceUsageAnalysis.cpp
/home/gha/actions-runner/_work/llvm-project/llvm-project/llvm/lib/Target/AMDGPU/AMDGPUResourceUsageAnalysis.cpp:187:9: error: captured structured bindings are a C++20 extension [-Werror,-Wc++20-extensions]
187 |     if (VGPRMemCount)
|         ^
/home/gha/actions-runner/_work/llvm-project/llvm-project/llvm/lib/Target/AMDGPU/AMDGPUResourceUsageAnalysis.cpp:185:22: note: 'VGPRMemCount' declared here
185 |   auto [VGPRMemBase, VGPRMemCount] = TRI.getVGPRMemoryFile(MF);
|                      ^
/home/gha/actions-runner/_work/llvm-project/llvm-project/llvm/lib/Target/AMDGPU/AMDGPUResourceUsageAnalysis.cpp:188:44: error: captured structured bindings are a C++20 extension [-Werror,-Wc++20-extensions]
188 |       NumVGPR = std::max<int32_t>(NumVGPR, VGPRMemBase + VGPRMemCount);
|                                            ^
/home/gha/actions-runner/_work/llvm-project/llvm-project/llvm/lib/Target/AMDGPU/AMDGPUResourceUsageAnalysis.cpp:185:9: note: 'VGPRMemBase' declared here
185 |   auto [VGPRMemBase, VGPRMemCount] = TRI.getVGPRMemoryFile(MF);
|         ^
2 errors generated.
```
</details>
<details>
<summary>lib/Target/AMDGPU/CMakeFiles/LLVMAMDGPUCodeGen.dir/SIISelLowering.cpp.o</summary>

```
FAILED: lib/Target/AMDGPU/CMakeFiles/LLVMAMDGPUCodeGen.dir/SIISelLowering.cpp.o
sccache /opt/llvm/bin/clang++ -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/gha/actions-runner/_work/llvm-project/llvm-project/build/lib/Target/AMDGPU -I/home/gha/actions-runner/_work/llvm-project/llvm-project/llvm/lib/Target/AMDGPU -I/home/gha/actions-runner/_work/llvm-project/llvm-project/build/include -I/home/gha/actions-runner/_work/llvm-project/llvm-project/llvm/include -gmlt -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -Werror -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 -Wno-pass-failed -Wmisleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -ffunction-sections -fdata-sections -O3 -DNDEBUG -std=c++17 -fvisibility=hidden -UNDEBUG -fno-exceptions -funwind-tables -fno-rtti -MD -MT lib/Target/AMDGPU/CMakeFiles/LLVMAMDGPUCodeGen.dir/SIISelLowering.cpp.o -MF lib/Target/AMDGPU/CMakeFiles/LLVMAMDGPUCodeGen.dir/SIISelLowering.cpp.o.d -o lib/Target/AMDGPU/CMakeFiles/LLVMAMDGPUCodeGen.dir/SIISelLowering.cpp.o -c /home/gha/actions-runner/_work/llvm-project/llvm-project/llvm/lib/Target/AMDGPU/SIISelLowering.cpp
/home/gha/actions-runner/_work/llvm-project/llvm-project/llvm/lib/Target/AMDGPU/SIISelLowering.cpp:14515:26: error: unused variable 'MF' [-Werror,-Wunused-variable]
14515 |   const MachineFunction &MF = DAG.getMachineFunction();
|                          ^~
1 error generated.
```
</details>

If these failures are unrelated to your changes (for example tests are broken or flaky at HEAD), please open an issue at https://github.com/llvm/llvm-project/issues and add the `infrastructure` label.

https://github.com/llvm/llvm-project/pull/205435