Add support for __GCC_HAVE_SYNC_COMPARE_AND_SWAP_{1,2,4,8} on x86.
This fixes std::thread with libstdc++.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@178816 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Preprocessor/predefined-macros.c b/test/Preprocessor/predefined-macros.c
index 2c19301..94671f3 100644
--- a/test/Preprocessor/predefined-macros.c
+++ b/test/Preprocessor/predefined-macros.c
@@ -26,3 +26,21 @@
// RUN: %clang_cc1 %s -E -dM -o - \
// RUN: | FileCheck %s --check-prefix=CHECK-FINITE-MATH-FLAG-UNDEFINED
// CHECK-FINITE-MATH-FLAG-UNDEFINED: #define __FINITE_MATH_ONLY__ 0
+//
+// RUN: %clang_cc1 %s -E -dM -o - -triple i686 -target-cpu i386 \
+// RUN: | FileCheck %s --check-prefix=CHECK-SYNC_CAS_I386
+// CHECK-SYNC_CAS_I386-NOT: __GCC_HAVE_SYNC_COMPARE_AND_SWAP
+//
+// RUN: %clang_cc1 %s -E -dM -o - -triple i686 -target-cpu i486 \
+// RUN: | FileCheck %s --check-prefix=CHECK-SYNC_CAS_I486
+// CHECK-SYNC_CAS_I486: __GCC_HAVE_SYNC_COMPARE_AND_SWAP_1
+// CHECK-SYNC_CAS_I486: __GCC_HAVE_SYNC_COMPARE_AND_SWAP_2
+// CHECK-SYNC_CAS_I486: __GCC_HAVE_SYNC_COMPARE_AND_SWAP_4
+// CHECK-SYNC_CAS_I486-NOT: __GCC_HAVE_SYNC_COMPARE_AND_SWAP_8
+//
+// RUN: %clang_cc1 %s -E -dM -o - -triple i686 -target-cpu i586 \
+// RUN: | FileCheck %s --check-prefix=CHECK-SYNC_CAS_I586
+// CHECK-SYNC_CAS_I586: __GCC_HAVE_SYNC_COMPARE_AND_SWAP_1
+// CHECK-SYNC_CAS_I586: __GCC_HAVE_SYNC_COMPARE_AND_SWAP_2
+// CHECK-SYNC_CAS_I586: __GCC_HAVE_SYNC_COMPARE_AND_SWAP_4
+// CHECK-SYNC_CAS_I586: __GCC_HAVE_SYNC_COMPARE_AND_SWAP_8