Ensure -mcpu=xscale works for arm targets, after rL252903 and rL252904
[oota-llvm.git] / include / llvm / Support / Atomic.h
1 //===- llvm/Support/Atomic.h - Atomic Operations -----------------*- C++ -*-===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 // This file declares the llvm::sys atomic operations.
11 //
12 //===----------------------------------------------------------------------===//
13
14 #ifndef LLVM_SUPPORT_ATOMIC_H
15 #define LLVM_SUPPORT_ATOMIC_H
16
17 #include "llvm/Support/DataTypes.h"
18
19 namespace llvm {
20   namespace sys {
21     void MemoryFence();
22
23 #ifdef _MSC_VER
24     typedef long cas_flag;
25 #else
26     typedef uint32_t cas_flag;
27 #endif
28     cas_flag CompareAndSwap(volatile cas_flag* ptr,
29                             cas_flag new_value,
30                             cas_flag old_value);
31     cas_flag AtomicIncrement(volatile cas_flag* ptr);
32     cas_flag AtomicDecrement(volatile cas_flag* ptr);
33     cas_flag AtomicAdd(volatile cas_flag* ptr, cas_flag val);
34     cas_flag AtomicMul(volatile cas_flag* ptr, cas_flag val);
35     cas_flag AtomicDiv(volatile cas_flag* ptr, cas_flag val);
36   }
37 }
38
39 #endif