llvmbot wrote:
<!--LLVM PR SUMMARY COMMENT-->
@llvm/pr-subscribers-libc
Author: Joseph Huber (jhuber6)
<details>
<summary>Changes</summary>
Summary:
This warning is intended to indicate if `-march=native` returns
different values in a single compilation sense. As it stands we don't
care and it absolutely spams the test output if you run it on a machine
with more than one GPU like any cluster machine. Disable these warnings
everywhere we compile.
---
Full diff: https://github.com/llvm/llvm-project/pull/83173.diff
2 Files Affected:
- (modified) libc/cmake/modules/LLVMLibCCompileOptionRules.cmake (+1)
- (modified) libc/cmake/modules/LLVMLibCTestRules.cmake (+4-4)
``````````diff
diff --git a/libc/cmake/modules/LLVMLibCCompileOptionRules.cmake b/libc/cmake/modules/LLVMLibCCompileOptionRules.cmake
index c7ccd392354cb8..72b04822d8b84a 100644
--- a/libc/cmake/modules/LLVMLibCCompileOptionRules.cmake
+++ b/libc/cmake/modules/LLVMLibCCompileOptionRules.cmake
@@ -87,6 +87,7 @@ function(_get_common_compile_options output_var flags)
list(APPEND compile_options "-fvisibility=hidden")
list(APPEND compile_options "-fconvergent-functions")
list(APPEND compile_options "-flto")
+ list(APPEND compile_options "-Wno-multi-gpu")
if(LIBC_TARGET_ARCHITECTURE_IS_NVPTX)
list(APPEND compile_options "-Wno-unknown-cuda-version")
diff --git a/libc/cmake/modules/LLVMLibCTestRules.cmake b/libc/cmake/modules/LLVMLibCTestRules.cmake
index 76ce6754bd7339..836e15d34741b2 100644
--- a/libc/cmake/modules/LLVMLibCTestRules.cmake
+++ b/libc/cmake/modules/LLVMLibCTestRules.cmake
@@ -463,7 +463,7 @@ function(add_integration_test test_name)
if(LIBC_TARGET_ARCHITECTURE_IS_AMDGPU)
target_link_options(${fq_build_target_name} PRIVATE
- ${LIBC_COMPILE_OPTIONS_DEFAULT}
+ ${LIBC_COMPILE_OPTIONS_DEFAULT} -Wno-multi-gpu
-mcpu=${LIBC_GPU_TARGET_ARCHITECTURE} -flto
"-Wl,-mllvm,-amdgpu-lower-global-ctor-dtor=0" -nostdlib -static
"-Wl,-mllvm,-amdhsa-code-object-version=${LIBC_GPU_CODE_OBJECT_VERSION}")
@@ -471,7 +471,7 @@ function(add_integration_test test_name)
# We need to use the internal object versions for NVPTX.
set(internal_suffix ".__internal__")
target_link_options(${fq_build_target_name} PRIVATE
- ${LIBC_COMPILE_OPTIONS_DEFAULT}
+ ${LIBC_COMPILE_OPTIONS_DEFAULT} -Wno-multi-gpu
"-Wl,--suppress-stack-size-warning"
-march=${LIBC_GPU_TARGET_ARCHITECTURE} -nostdlib -static
"--cuda-path=${LIBC_CUDA_ROOT}")
@@ -647,14 +647,14 @@ function(add_libc_hermetic_test test_name)
if(LIBC_TARGET_ARCHITECTURE_IS_AMDGPU)
target_link_options(${fq_build_target_name} PRIVATE
${LIBC_COMPILE_OPTIONS_DEFAULT}
- -mcpu=${LIBC_GPU_TARGET_ARCHITECTURE} -flto
+ -mcpu=${LIBC_GPU_TARGET_ARCHITECTURE} -flto -Wno-multi-gpu
"-Wl,-mllvm,-amdgpu-lower-global-ctor-dtor=0" -nostdlib -static
"-Wl,-mllvm,-amdhsa-code-object-version=${LIBC_GPU_CODE_OBJECT_VERSION}")
elseif(LIBC_TARGET_ARCHITECTURE_IS_NVPTX)
# We need to use the internal object versions for NVPTX.
set(internal_suffix ".__internal__")
target_link_options(${fq_build_target_name} PRIVATE
- ${LIBC_COMPILE_OPTIONS_DEFAULT}
+ ${LIBC_COMPILE_OPTIONS_DEFAULT} -Wno-multi-gpu
"-Wl,--suppress-stack-size-warning"
-march=${LIBC_GPU_TARGET_ARCHITECTURE} -nostdlib -static
"--cuda-path=${LIBC_CUDA_ROOT}")
``````````
</details>
https://github.com/llvm/llvm-project/pull/83173