commit a7db230d752be4a104c496eb68a82a5acb4bb35c
author Craig Topper <craig.topper@intel.com> Thu Jun 25 22:55:36 2020 -0700
committer Craig Topper <craig.topper@intel.com> Thu Jun 25 22:55:36 2020 -0700
tree 1293f977f4e6c2afe4346a9194f993175e48fdbc
parent d4adac48320eb52eb5e4b01b75ad08e37f196df4

[X86] Add CMPXCHG16B feature to amdfam10 in the frontend.

We already have this feature on it in the backend.

clang/test/Preprocessor/predefined-arch-macros.c

diff --git a/clang/test/Preprocessor/predefined-arch-macros.c b/clang/test/Preprocessor/predefined-arch-macros.c
index 4e1535c..91f6a99 100644
--- a/clang/test/Preprocessor/predefined-arch-macros.c
+++ b/clang/test/Preprocessor/predefined-arch-macros.c
@@ -2397,6 +2397,7 @@
 // RUN:   | FileCheck -match-full-lines %s -check-prefix=CHECK_AMDFAM10_M64
 // CHECK_AMDFAM10_M64: #define __3dNOW_A__ 1
 // CHECK_AMDFAM10_M64: #define __3dNOW__ 1
+// CHECK_AMDFAM10_M64: #define __GCC_HAVE_SYNC_COMPARE_AND_SWAP_16 1
 // CHECK_AMDFAM10_M64: #define __LZCNT__ 1
 // CHECK_AMDFAM10_M64: #define __MMX__ 1
 // CHECK_AMDFAM10_M64: #define __POPCNT__ 1