[llvm] [SelectionDAG] Preserve cache hint metadata through DAGCombiner (PR #225954)

[via llvm-commits]

github-actions[bot] wrote:

<!--PREMERGE ADVISOR COMMENT: Windows-->
# :window: Windows x64 Test Results

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

<details>
<summary>[code=1] lib/CodeGen/SelectionDAG/CMakeFiles/LLVMSelectionDAG.dir/TargetLowering.cpp.obj</summary>

```
FAILED: [code=1] lib/CodeGen/SelectionDAG/CMakeFiles/LLVMSelectionDAG.dir/TargetLowering.cpp.obj
sccache C:\clang\clang-msvc\bin\clang-cl.exe  /nologo -TP -DUNICODE -D_CRT_NONSTDC_NO_DEPRECATE -D_CRT_NONSTDC_NO_WARNINGS -D_CRT_SECURE_NO_DEPRECATE -D_CRT_SECURE_NO_WARNINGS -D_GLIBCXX_ASSERTIONS -D_HAS_EXCEPTIONS=0 -D_LIBCPP_HARDENING_MODE=_LIBCPP_HARDENING_MODE_EXTENSIVE -D_SCL_SECURE_NO_DEPRECATE -D_SCL_SECURE_NO_WARNINGS -D_UNICODE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -IC:\_work\llvm-project\llvm-project\build\lib\CodeGen\SelectionDAG -IC:\_work\llvm-project\llvm-project\llvm\lib\CodeGen\SelectionDAG -IC:\_work\llvm-project\llvm-project\build\include -IC:\_work\llvm-project\llvm-project\llvm\include -imsvc"C:\BuildTools\DIA SDK\include" /DWIN32 /D_WINDOWS   /Zc:inline /Zc:__cplusplus /Oi /bigobj /permissive- -Werror=unguarded-availability-new /W4  -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers -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 /Gw /O2 /Ob2  -std:c++17 -MD -UNDEBUG /Brepro /EHs-c- /GR- /showIncludes /Folib\CodeGen\SelectionDAG\CMakeFiles\LLVMSelectionDAG.dir\TargetLowering.cpp.obj /Fdlib\CodeGen\SelectionDAG\CMakeFiles\LLVMSelectionDAG.dir\LLVMSelectionDAG.pdb -c -- C:\_work\llvm-project\llvm-project\llvm\lib\CodeGen\SelectionDAG\TargetLowering.cpp
C:\_work\llvm-project\llvm-project\llvm\lib\CodeGen\SelectionDAG\TargetLowering.cpp(5161,30): error: no member named 'getMMOMetadataForSubAccess' in 'llvm::LoadSDNode'
5161 |                         Lod->getMMOMetadataForSubAccess());
|                         ~~~  ^
1 error generated.
```
</details>
<details>
<summary>[code=1] lib/CodeGen/SelectionDAG/CMakeFiles/LLVMSelectionDAG.dir/DAGCombiner.cpp.obj</summary>

```
FAILED: [code=1] lib/CodeGen/SelectionDAG/CMakeFiles/LLVMSelectionDAG.dir/DAGCombiner.cpp.obj
sccache C:\clang\clang-msvc\bin\clang-cl.exe  /nologo -TP -DUNICODE -D_CRT_NONSTDC_NO_DEPRECATE -D_CRT_NONSTDC_NO_WARNINGS -D_CRT_SECURE_NO_DEPRECATE -D_CRT_SECURE_NO_WARNINGS -D_GLIBCXX_ASSERTIONS -D_HAS_EXCEPTIONS=0 -D_LIBCPP_HARDENING_MODE=_LIBCPP_HARDENING_MODE_EXTENSIVE -D_SCL_SECURE_NO_DEPRECATE -D_SCL_SECURE_NO_WARNINGS -D_UNICODE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -IC:\_work\llvm-project\llvm-project\build\lib\CodeGen\SelectionDAG -IC:\_work\llvm-project\llvm-project\llvm\lib\CodeGen\SelectionDAG -IC:\_work\llvm-project\llvm-project\build\include -IC:\_work\llvm-project\llvm-project\llvm\include -imsvc"C:\BuildTools\DIA SDK\include" /DWIN32 /D_WINDOWS   /Zc:inline /Zc:__cplusplus /Oi /bigobj /permissive- -Werror=unguarded-availability-new /W4  -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers -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 /Gw /O2 /Ob2  -std:c++17 -MD -UNDEBUG /Brepro /EHs-c- /GR- /showIncludes /Folib\CodeGen\SelectionDAG\CMakeFiles\LLVMSelectionDAG.dir\DAGCombiner.cpp.obj /Fdlib\CodeGen\SelectionDAG\CMakeFiles\LLVMSelectionDAG.dir\LLVMSelectionDAG.pdb -c -- C:\_work\llvm-project\llvm-project\llvm\lib\CodeGen\SelectionDAG\DAGCombiner.cpp
C:\_work\llvm-project\llvm-project\llvm\lib\CodeGen\SelectionDAG\DAGCombiner.cpp(13992,32): error: no member named 'getMMOMetadataForSubAccess' in 'llvm::MaskedStoreSDNode'
13992 |                           MST->getMMOMetadataForSubAccess());
|                           ~~~  ^
C:\_work\llvm-project\llvm-project\llvm\lib\CodeGen\SelectionDAG\DAGCombiner.cpp(14012,36): error: no member named 'getMMOMetadataForSubAccess' in 'llvm::MaskedStoreSDNode'
14012 |                               MST->getMMOMetadataForSubAccess());
|                               ~~~  ^
C:\_work\llvm-project\llvm-project\llvm\lib\CodeGen\SelectionDAG\DAGCombiner.cpp(15535,14): error: no member named 'getMMOMetadataForSubAccess' in 'llvm::LoadSDNode'
15535 |         LN0->getMMOMetadataForSubAccess());
|         ~~~  ^
C:\_work\llvm-project\llvm-project\llvm\lib\CodeGen\SelectionDAG\DAGCombiner.cpp(17368,32): error: no member named 'getMMOMetadataForSubAccess' in 'llvm::LoadSDNode'
17368 |                           LN0->getMMOMetadataForSubAccess());
|                           ~~~  ^
C:\_work\llvm-project\llvm-project\llvm\lib\CodeGen\SelectionDAG\DAGCombiner.cpp(22945,30): error: no member named 'getMMOMetadataForSubAccess' in 'llvm::StoreSDNode'
22945 |   MMOMetadata Metadata = St->getMMOMetadataForSubAccess();
|                          ~~  ^
C:\_work\llvm-project\llvm-project\llvm\lib\CodeGen\SelectionDAG\DAGCombiner.cpp(23097,37): error: no member named 'getMMOMetadataForSubAccess' in 'llvm::LoadSDNode'
23097 |                                 LD->getMMOMetadataForSubAccess());
|                                 ~~  ^
C:\_work\llvm-project\llvm-project\llvm\lib\CodeGen\SelectionDAG\DAGCombiner.cpp(23103,38): error: no member named 'getMMOMetadataForSubAccess' in 'llvm::StoreSDNode'
23103 |                                  ST->getMMOMetadataForSubAccess());
|                                  ~~  ^
C:\_work\llvm-project\llvm-project\llvm\lib\CodeGen\SelectionDAG\DAGCombiner.cpp(24507,34): error: no member named 'getMMOMetadataForSubAccess' in 'llvm::StoreSDNode'
24507 |       MMOMetadata Metadata = ST->getMMOMetadataForSubAccess();
|                              ~~  ^
C:\_work\llvm-project\llvm-project\llvm\lib\CodeGen\SelectionDAG\DAGCombiner.cpp(24585,27): error: no member named 'getMMOMetadataForSubAccess' in 'llvm::StoreSDNode'
24585 |                       ST->getMMOMetadataForSubAccess());
|                       ~~  ^
C:\_work\llvm-project\llvm-project\llvm\lib\CodeGen\SelectionDAG\DAGCombiner.cpp(24779,17): error: no member named 'getMMOMetadataForSubAccess' in 'llvm::StoreSDNode'
24779 |             ST->getMMOMetadataForSubAccess());
|             ~~  ^
10 errors 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/225954