| David Chisnall | 7a7ee30 | 2012-01-16 17:27:18 +0000 | [diff] [blame] | 1 | // RUN: %clang_cc1 -emit-llvm %s -o - | FileCheck %s |
| 2 | |||||
| 3 | void foo(void) | ||||
| 4 | { | ||||
| 5 | _Atomic(int) i = 0; | ||||
| 6 | // Check that multiply / divides on atomics produce a cmpxchg loop | ||||
| 7 | i *= 2; // CHECK: cmpxchg | ||||
| 8 | i /= 2; // CHECK: cmpxchg | ||||
| 9 | // These should be emitting atomicrmw instructions, but they aren't yet | ||||
| 10 | i += 2; // CHECK: cmpxchg | ||||
| 11 | i -= 2; // CHECK: cmpxchg | ||||
| 12 | i++; // CHECK: cmpxchg | ||||
| 13 | i--; // CHECK: cmpxchg | ||||
| 14 | } | ||||