[libc-commits] [PATCH] D151213: [libc][AMDGPU] Disable the AMDGPU backend's ctor/dtor lowering for libc

[Joseph Huber via Phabricator via libc-commits]

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The AMDGPU backend has a built-in pass to lower constructors. We do this
manually in the `start.cpp` implementation so we can disable this to
keep the binaries smaller.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D151213

Files:
  libc/startup/gpu/amdgpu/CMakeLists.txt


Index: libc/startup/gpu/amdgpu/CMakeLists.txt
===================================================================
--- libc/startup/gpu/amdgpu/CMakeLists.txt
+++ libc/startup/gpu/amdgpu/CMakeLists.txt
@@ -25,4 +25,5 @@
   "-mcpu=${LIBC_GPU_TARGET_ARCHITECTURE}"
   "--target=${LIBC_GPU_TARGET_TRIPLE}"
   "-flto"
+  "-Wl,-mllvm,-amdgpu-lower-global-ctor-dtor=0"
 )


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