[llvm] Add LoopVectorizer support for `llvm.vector.partial.reduce.fadd` (PR #163975)

Tue Dec 9 04:25:08 PST 2025

github-actions[bot] wrote:

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

* 2993 tests passed
* 30 tests skipped

All tests passed but another part of the build **failed**. Click on a failure below to see the details.

<details>
<summary>[code=1] lib/Target/RISCV/CMakeFiles/LLVMRISCVCodeGen.dir/RISCVTargetTransformInfo.cpp.obj</summary>

```
FAILED: [code=1] lib/Target/RISCV/CMakeFiles/LLVMRISCVCodeGen.dir/RISCVTargetTransformInfo.cpp.obj
sccache C:\clang\clang-msvc\bin\clang-cl.exe  /nologo -TP -DGTEST_HAS_RTTI=0 -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_SCL_SECURE_NO_DEPRECATE -D_SCL_SECURE_NO_WARNINGS -D_UNICODE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -Ilib\Target\RISCV -IC:\_work\llvm-project\llvm-project\llvm\lib\Target\RISCV -Iinclude -IC:\_work\llvm-project\llvm-project\llvm\include /DWIN32 /D_WINDOWS   /Zc:inline /Zc:__cplusplus /Oi /Brepro /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  -MD  /EHs-c- /GR- -UNDEBUG -std:c++17 /showIncludes /Folib\Target\RISCV\CMakeFiles\LLVMRISCVCodeGen.dir\RISCVTargetTransformInfo.cpp.obj /Fdlib\Target\RISCV\CMakeFiles\LLVMRISCVCodeGen.dir\LLVMRISCVCodeGen.pdb -c -- C:\_work\llvm-project\llvm-project\llvm\lib\Target\RISCV\RISCVTargetTransformInfo.cpp
In file included from C:\_work\llvm-project\llvm-project\llvm\lib\Target\RISCV\RISCVTargetTransformInfo.cpp:9:
C:\_work\llvm-project\llvm-project\llvm\lib\Target\RISCV\RISCVTargetTransformInfo.h(107,43): error: non-virtual member function marked 'override' hides virtual member function
107 |       TTI::TargetCostKind CostKind) const override;
|                                           ^
C:\_work\llvm-project\llvm-project\llvm\include\llvm/Analysis/TargetTransformInfoImpl.h(658,27): note: hidden overloaded virtual function 'llvm::TargetTransformInfoImplBase::getPartialReductionCost' declared here: different number of parameters (10 vs 9)
658 |   virtual InstructionCost getPartialReductionCost(
|                           ^
1 error generated.
```
</details>
<details>
<summary>[code=1] lib/Target/RISCV/CMakeFiles/LLVMRISCVCodeGen.dir/RISCVTargetMachine.cpp.obj</summary>

```
FAILED: [code=1] lib/Target/RISCV/CMakeFiles/LLVMRISCVCodeGen.dir/RISCVTargetMachine.cpp.obj
sccache C:\clang\clang-msvc\bin\clang-cl.exe  /nologo -TP -DGTEST_HAS_RTTI=0 -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_SCL_SECURE_NO_DEPRECATE -D_SCL_SECURE_NO_WARNINGS -D_UNICODE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -Ilib\Target\RISCV -IC:\_work\llvm-project\llvm-project\llvm\lib\Target\RISCV -Iinclude -IC:\_work\llvm-project\llvm-project\llvm\include /DWIN32 /D_WINDOWS   /Zc:inline /Zc:__cplusplus /Oi /Brepro /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  -MD  /EHs-c- /GR- -UNDEBUG -std:c++17 /showIncludes /Folib\Target\RISCV\CMakeFiles\LLVMRISCVCodeGen.dir\RISCVTargetMachine.cpp.obj /Fdlib\Target\RISCV\CMakeFiles\LLVMRISCVCodeGen.dir\LLVMRISCVCodeGen.pdb -c -- C:\_work\llvm-project\llvm-project\llvm\lib\Target\RISCV\RISCVTargetMachine.cpp
In file included from C:\_work\llvm-project\llvm-project\llvm\lib\Target\RISCV\RISCVTargetMachine.cpp:18:
C:\_work\llvm-project\llvm-project\llvm\lib\Target\RISCV\RISCVTargetTransformInfo.h(107,43): error: non-virtual member function marked 'override' hides virtual member function
107 |       TTI::TargetCostKind CostKind) const override;
|                                           ^
C:\_work\llvm-project\llvm-project\llvm\include\llvm/Analysis/TargetTransformInfoImpl.h(658,27): note: hidden overloaded virtual function 'llvm::TargetTransformInfoImplBase::getPartialReductionCost' declared here: different number of parameters (10 vs 9)
658 |   virtual InstructionCost getPartialReductionCost(
|                           ^
1 error generated.
```
</details>
<details>
<summary>[code=1] lib/Target/WebAssembly/CMakeFiles/LLVMWebAssemblyCodeGen.dir/WebAssemblyTargetTransformInfo.cpp.obj</summary>

```
FAILED: [code=1] lib/Target/WebAssembly/CMakeFiles/LLVMWebAssemblyCodeGen.dir/WebAssemblyTargetTransformInfo.cpp.obj
sccache C:\clang\clang-msvc\bin\clang-cl.exe  /nologo -TP -DGTEST_HAS_RTTI=0 -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_SCL_SECURE_NO_DEPRECATE -D_SCL_SECURE_NO_WARNINGS -D_UNICODE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -Ilib\Target\WebAssembly -IC:\_work\llvm-project\llvm-project\llvm\lib\Target\WebAssembly -Iinclude -IC:\_work\llvm-project\llvm-project\llvm\include /DWIN32 /D_WINDOWS   /Zc:inline /Zc:__cplusplus /Oi /Brepro /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  -MD  /EHs-c- /GR- -UNDEBUG -std:c++17 /showIncludes /Folib\Target\WebAssembly\CMakeFiles\LLVMWebAssemblyCodeGen.dir\WebAssemblyTargetTransformInfo.cpp.obj /Fdlib\Target\WebAssembly\CMakeFiles\LLVMWebAssemblyCodeGen.dir\LLVMWebAssemblyCodeGen.pdb -c -- C:\_work\llvm-project\llvm-project\llvm\lib\Target\WebAssembly\WebAssemblyTargetTransformInfo.cpp
In file included from C:\_work\llvm-project\llvm-project\llvm\lib\Target\WebAssembly\WebAssemblyTargetTransformInfo.cpp:15:
C:\_work\llvm-project\llvm-project\llvm\lib\Target\WebAssembly\WebAssemblyTargetTransformInfo.h(97,43): error: non-virtual member function marked 'override' hides virtual member function
97 |       TTI::TargetCostKind CostKind) const override;
|                                           ^
C:\_work\llvm-project\llvm-project\llvm\include\llvm/Analysis/TargetTransformInfoImpl.h(658,27): note: hidden overloaded virtual function 'llvm::TargetTransformInfoImplBase::getPartialReductionCost' declared here: different number of parameters (10 vs 9)
658 |   virtual InstructionCost getPartialReductionCost(
|                           ^
1 error generated.
```
</details>
<details>
<summary>[code=1] lib/Target/WebAssembly/CMakeFiles/LLVMWebAssemblyCodeGen.dir/WebAssemblyTargetMachine.cpp.obj</summary>

```
FAILED: [code=1] lib/Target/WebAssembly/CMakeFiles/LLVMWebAssemblyCodeGen.dir/WebAssemblyTargetMachine.cpp.obj
sccache C:\clang\clang-msvc\bin\clang-cl.exe  /nologo -TP -DGTEST_HAS_RTTI=0 -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_SCL_SECURE_NO_DEPRECATE -D_SCL_SECURE_NO_WARNINGS -D_UNICODE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -Ilib\Target\WebAssembly -IC:\_work\llvm-project\llvm-project\llvm\lib\Target\WebAssembly -Iinclude -IC:\_work\llvm-project\llvm-project\llvm\include /DWIN32 /D_WINDOWS   /Zc:inline /Zc:__cplusplus /Oi /Brepro /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  -MD  /EHs-c- /GR- -UNDEBUG -std:c++17 /showIncludes /Folib\Target\WebAssembly\CMakeFiles\LLVMWebAssemblyCodeGen.dir\WebAssemblyTargetMachine.cpp.obj /Fdlib\Target\WebAssembly\CMakeFiles\LLVMWebAssemblyCodeGen.dir\LLVMWebAssemblyCodeGen.pdb -c -- C:\_work\llvm-project\llvm-project\llvm\lib\Target\WebAssembly\WebAssemblyTargetMachine.cpp
In file included from C:\_work\llvm-project\llvm-project\llvm\lib\Target\WebAssembly\WebAssemblyTargetMachine.cpp:21:
C:\_work\llvm-project\llvm-project\llvm\lib\Target\WebAssembly\WebAssemblyTargetTransformInfo.h(97,43): error: non-virtual member function marked 'override' hides virtual member function
97 |       TTI::TargetCostKind CostKind) const override;
|                                           ^
C:\_work\llvm-project\llvm-project\llvm\include\llvm/Analysis/TargetTransformInfoImpl.h(658,27): note: hidden overloaded virtual function 'llvm::TargetTransformInfoImplBase::getPartialReductionCost' declared here: different number of parameters (10 vs 9)
658 |   virtual InstructionCost getPartialReductionCost(
|                           ^
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/163975