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| author | dim <dim@FreeBSD.org> | 2012-04-14 14:01:31 +0000 |
|---|---|---|
| committer | dim <dim@FreeBSD.org> | 2012-04-14 14:01:31 +0000 |
| commit | 50b73317314e889cf39c7b1d6cbf419fa7502f22 (patch) | |
| tree | be1815eb79b42ff482a8562b13c2dcbf0c5dcbee /test/CodeGen/atomic_ops.c | |
| parent | dc04cb328508e61aad809d9b53b12f9799a00e7d (diff) | |
| download | FreeBSD-src-50b73317314e889cf39c7b1d6cbf419fa7502f22.zip FreeBSD-src-50b73317314e889cf39c7b1d6cbf419fa7502f22.tar.gz | |
Vendor import of clang trunk r154661:
http://llvm.org/svn/llvm-project/cfe/trunk@r154661
Diffstat (limited to 'test/CodeGen/atomic_ops.c')
| -rw-r--r-- | test/CodeGen/atomic_ops.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/test/CodeGen/atomic_ops.c b/test/CodeGen/atomic_ops.c new file mode 100644 index 0000000..9a18c9e --- /dev/null +++ b/test/CodeGen/atomic_ops.c @@ -0,0 +1,14 @@ +// RUN: %clang_cc1 -emit-llvm %s -o - | FileCheck %s + +void foo(void) +{ + _Atomic(int) i = 0; + // Check that multiply / divides on atomics produce a cmpxchg loop + i *= 2; // CHECK: cmpxchg + i /= 2; // CHECK: cmpxchg + // These should be emitting atomicrmw instructions, but they aren't yet + i += 2; // CHECK: cmpxchg + i -= 2; // CHECK: cmpxchg + i++; // CHECK: cmpxchg + i--; // CHECK: cmpxchg +} |
