[libc-commits] [libc] [libc] Silence warnings when building GPU tests (PR #82701)

[via libc-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-libc

Author: Joseph Huber (jhuber6)

<details>
<summary>Changes</summary>

Summary:
This patch silences two warnings that may occur during the building of
GPU tests. These are not informative or helpful and just make the test
output longer.


---
Full diff: https://github.com/llvm/llvm-project/pull/82701.diff


2 Files Affected:

- (modified) libc/cmake/modules/LLVMLibCCompileOptionRules.cmake (+2-2) 
- (modified) libc/cmake/modules/LLVMLibCTestRules.cmake (+2) 


``````````diff
diff --git a/libc/cmake/modules/LLVMLibCCompileOptionRules.cmake b/libc/cmake/modules/LLVMLibCCompileOptionRules.cmake
index 33ba5da4f8d57c..408e25b3469c0a 100644
--- a/libc/cmake/modules/LLVMLibCCompileOptionRules.cmake
+++ b/libc/cmake/modules/LLVMLibCCompileOptionRules.cmake
@@ -158,12 +158,12 @@ function(_get_hermetic_test_compile_options output_var flags)
   # The GPU build requires overriding the default CMake triple and architecture.
   if(LIBC_TARGET_ARCHITECTURE_IS_AMDGPU)
     list(APPEND compile_options
-         -nogpulib -mcpu=${LIBC_GPU_TARGET_ARCHITECTURE} -flto
+         -Wno-multi-gpu -nogpulib -mcpu=${LIBC_GPU_TARGET_ARCHITECTURE} -flto
          -mcode-object-version=${LIBC_GPU_CODE_OBJECT_VERSION})
   elseif(LIBC_TARGET_ARCHITECTURE_IS_NVPTX)
     list(APPEND compile_options
          "SHELL:-mllvm -nvptx-emit-init-fini-kernel=false"
-         --cuda-path=${LIBC_CUDA_ROOT}
+         -Wno-multi-gpu --cuda-path=${LIBC_CUDA_ROOT}
          -nogpulib -march=${LIBC_GPU_TARGET_ARCHITECTURE} -fno-use-cxa-atexit)
   endif()
   set(${output_var} ${compile_options} PARENT_SCOPE)
diff --git a/libc/cmake/modules/LLVMLibCTestRules.cmake b/libc/cmake/modules/LLVMLibCTestRules.cmake
index 373cbd68538596..1166c26e4d8a56 100644
--- a/libc/cmake/modules/LLVMLibCTestRules.cmake
+++ b/libc/cmake/modules/LLVMLibCTestRules.cmake
@@ -470,6 +470,7 @@ function(add_integration_test test_name)
     # We need to use the internal object versions for NVPTX.
     set(internal_suffix ".__internal__")
     target_link_options(${fq_build_target_name} PRIVATE 
+      "-Wl,--suppress-stack-size-warning"
       -march=${LIBC_GPU_TARGET_ARCHITECTURE} -nostdlib -static
       "--cuda-path=${LIBC_CUDA_ROOT}")
   elseif(LIBC_CC_SUPPORTS_NOSTDLIBPP)
@@ -650,6 +651,7 @@ function(add_libc_hermetic_test test_name)
     # We need to use the internal object versions for NVPTX.
     set(internal_suffix ".__internal__")
     target_link_options(${fq_build_target_name} PRIVATE 
+      "-Wl,--suppress-stack-size-warning"
       -march=${LIBC_GPU_TARGET_ARCHITECTURE} -nostdlib -static
       "--cuda-path=${LIBC_CUDA_ROOT}")
   elseif(LIBC_CC_SUPPORTS_NOSTDLIBPP)

``````````

</details>


https://github.com/llvm/llvm-project/pull/82701