minix/external/bsd/llvm/dist/clang/test/CodeGen/atomic_ops.c
Lionel Sambuc f4a2713ac8 Importing netbsd clang -- pristine
Change-Id: Ia40e9ffdf29b5dab2f122f673ff6802a58bc690f
2014-07-28 17:05:57 +02:00

18 lines
361 B
C

// RUN: %clang_cc1 -emit-llvm %s -o - | FileCheck %s
void foo(int x)
{
_Atomic(int) i = 0;
_Atomic(short) j = 0;
// Check that multiply / divides on atomics produce a cmpxchg loop
i *= 2;
// CHECK: mul nsw i32
// CHECK: cmpxchg i32*
i /= 2;
// CHECK: sdiv i32
// CHECK: cmpxchg i32*
j /= x;
// CHECK: sdiv i32
// CHECK: cmpxchg i16*
}