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e305dcc6fd
Do not link asan_rtl_x86_64.S for non x86_64 platforms.
Prior to this CL asan_rtl_x86_64.S would be always be linked when
building compiler-rt for non x86_64 platforms, this normally isn't an
issue since at that link time is an empty file anyway.
When attempting to link a Aarch64 program with branch protection enabled
with the address sanitizer.
E.g.
```
clang --target=aarch64 \
-fsanitize=address \
-mbranch-protection=standard \
-Wl,-z,force-bti
-o test \
test.cc
```
Results in the linking error from the sections generated from the empty
asan_rtl_x86_64.S owed to missing a .note.gnu.property
Also see [[ https://bugs.chromium.org/p/chromium/issues/detail?id=1427165 | https://bugs.chromium.org/p/chromium/issues/detail?id=1427165 ]]
Reviewed By: vitalybuka
Differential Revision: https://reviews.llvm.org/D149957
Compiler-RT ================================ This directory and its subdirectories contain source code for the compiler support routines. Compiler-RT is open source software. You may freely distribute it under the terms of the license agreement found in LICENSE.txt. ================================