diff --git a/libc/startup/gpu/amdgpu/CMakeLists.txt b/libc/startup/gpu/amdgpu/CMakeLists.txt
--- a/libc/startup/gpu/amdgpu/CMakeLists.txt
+++ b/libc/startup/gpu/amdgpu/CMakeLists.txt
@@ -26,4 +26,7 @@
   "--target=${LIBC_GPU_TARGET_TRIPLE}"
   "-flto"
   "-Wl,-mllvm,-amdgpu-lower-global-ctor-dtor=0"
+  # FIXME: This pass causes builds to take ~10x longer. Disable until the
+  # performance problems have been addressed.
+  "-Wl,-mllvm,-amdgpu-atomic-optimizations=0"
 )