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AArch64: add atomic support parameters to TargetInfo 

This allows Clang to detect and deal wih __atomic_* operations properly on
AArch64. Previously we produced an error when encountering them at high
optimisation levels.

llvm-svn: 175438
This commit is contained in:
Tim Northover 2013-02-18 12:11:32 +00:00
parent eaf706bef3
commit 847d2d4549
2 changed files with 9 additions and 0 deletions
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4
clang/lib/Basic/Targets.cpp
View File

@ -3167,6 +3167,10 @@ public:
WCharType = UnsignedInt;
LongDoubleFormat = &llvm::APFloat::IEEEquad;
// AArch64 backend supports 64-bit operations at the moment. In principle
// 128-bit is possible if register-pairs are used.
MaxAtomicPromoteWidth = MaxAtomicInlineWidth = 64;
TheCXXABI.set(TargetCXXABI::GenericAArch64);
}
virtual void getTargetDefines(const LangOptions &Opts,

5
clang/test/Sema/atomic-ops.c
View File

@ -1,4 +1,5 @@
// RUN: %clang_cc1 %s -verify -fsyntax-only -triple=i686-linux-gnu -std=c11
// RUN: %clang_cc1 %s -verify -fsyntax-only -triple=aarch64-linux-gnu -std=c11
// Basic parsing/Sema tests for __c11_atomic_*
@ -17,7 +18,11 @@ _Static_assert(__GCC_ATOMIC_WCHAR_T_LOCK_FREE == 2, "");
_Static_assert(__GCC_ATOMIC_SHORT_LOCK_FREE == 2, "");
_Static_assert(__GCC_ATOMIC_INT_LOCK_FREE == 2, "");
_Static_assert(__GCC_ATOMIC_LONG_LOCK_FREE == 2, "");
#ifdef __i386__
_Static_assert(__GCC_ATOMIC_LLONG_LOCK_FREE == 1, "");
#else
_Static_assert(__GCC_ATOMIC_LLONG_LOCK_FREE == 2, "");
#endif
_Static_assert(__GCC_ATOMIC_POINTER_LOCK_FREE == 2, "");
_Static_assert(__c11_atomic_is_lock_free(1), "");