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Add support for __GCC_HAVE_SYNC_COMPARE_AND_SWAP_{1,2,4,8} on x86. 

This fixes std::thread with libstdc++.

llvm-svn: 178816
This commit is contained in:
Michael J. Spencer 2013-04-04 23:53:43 +00:00
parent d953d66ee9
commit a0d5eb3a27
2 changed files with 26 additions and 0 deletions
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8
clang/lib/Basic/Targets.cpp
View File

@ -2730,6 +2730,14 @@ void X86TargetInfo::getTargetDefines(const LangOptions &Opts,
case NoMMX3DNow:
break;
}
if (CPU >= CK_i486) {
Builder.defineMacro("__GCC_HAVE_SYNC_COMPARE_AND_SWAP_1");
Builder.defineMacro("__GCC_HAVE_SYNC_COMPARE_AND_SWAP_2");
Builder.defineMacro("__GCC_HAVE_SYNC_COMPARE_AND_SWAP_4");
}
if (CPU >= CK_i586)
Builder.defineMacro("__GCC_HAVE_SYNC_COMPARE_AND_SWAP_8");
}
bool X86TargetInfo::hasFeature(StringRef Feature) const {

18
clang/test/Preprocessor/predefined-macros.c
View File

@ -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