llvm-6502/test/FrontendC/2010-01-13-MemBarrier.c

12 lines
342 B
C
Raw Normal View History

// RUN: %llvmgcc %s -S -emit-llvm -o - | FileCheck %s
// XFAIL: sparc
// rdar://7536390
unsigned t(unsigned *ptr, unsigned val) {
// CHECK: @t
// CHECK: call void @llvm.memory.barrier
// CHECK-NEXT: call i32 @llvm.atomic.swap.i32
// CHECK-NEXT: call void @llvm.memory.barrier
return __sync_lock_test_and_set(ptr, val);
}