[libc-commits] [libc] [libc] Disable testing for NVPTX debug builds (PR #86856)

[Joseph Huber via libc-commits]

https://github.com/jhuber6 created https://github.com/llvm/llvm-project/pull/86856

Summary:
Debug builds don't optimize out certain parts of the code that end up
making the GPU backend crash. This results in regular builds not being
successful just to build the testing objects. Disable them for now in
debug mode.


>From dcf229b701157934287bb003fb9dd875a31c7efe Mon Sep 17 00:00:00 2001
From: Joseph Huber <huberjn at outlook.com>
Date: Wed, 27 Mar 2024 13:24:18 -0500
Subject: [PATCH] [libc] Disable testing for NVPTX debug builds

Summary:
Debug builds don't optimize out certain parts of the code that end up
making the GPU backend crash. This results in regular builds not being
successful just to build the testing objects. Disable them for now in
debug mode.
---
 libc/cmake/modules/prepare_libc_gpu_build.cmake | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/libc/cmake/modules/prepare_libc_gpu_build.cmake b/libc/cmake/modules/prepare_libc_gpu_build.cmake
index bea6bb016491b6..20aca16990fc63 100644
--- a/libc/cmake/modules/prepare_libc_gpu_build.cmake
+++ b/libc/cmake/modules/prepare_libc_gpu_build.cmake
@@ -93,6 +93,11 @@ else()
 endif()
 set(LIBC_GPU_TARGET_ARCHITECTURE "${gpu_test_architecture}")
 
+# The NVPTX backend cannot currently handle objects created in debug mode.
+if(LIBC_TARGET_ARCHITECTURE_IS_NVPTX AND CMAKE_BUILD_TYPE STREQUAL "Debug")
+  set(LIBC_GPU_TESTS_DISABLED TRUE)
+endif()
+
 # Identify the GPU loader utility used to run tests.
 set(LIBC_GPU_LOADER_EXECUTABLE "" CACHE STRING "Executable for the GPU loader.")
 if(LIBC_GPU_LOADER_EXECUTABLE)