llvm-project/clang/test/CodeGen/linux-arm-atomic.c
James Y Knight 8043d5a964 NFC: update clang tests to check ordering and alignment for atomicrmw/cmpxchg.
The ability to specify alignment was recently added, and it's an
important property which we should ensure is set as expected by
Clang. (Especially before making further changes to Clang's code in
this area.) But, because it's on the end of the lines, the existing
tests all ignore it.

Therefore, update all the tests to also verify the expected alignment
for atomicrmw and cmpxchg. While I was in there, I also updated uses
of 'load atomic' and 'store atomic', and added the memory ordering,
where that was missing.
2021-02-11 17:35:09 -05:00

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C

// RUN: %clang_cc1 %s -emit-llvm -o - -triple=armv7-unknown-linux | FileCheck %s
// RUN: %clang_cc1 %s -emit-llvm -o - -triple=armv6-unknown-linux | FileCheck %s
// RUN: %clang_cc1 %s -emit-llvm -o - -triple=thumbv7-unknown-linux | FileCheck %s
// RUN: %clang_cc1 %s -emit-llvm -o - -triple=armv6-unknown-freebsd | FileCheck %s
typedef int _Atomic_word;
_Atomic_word exchange_and_add(volatile _Atomic_word *__mem, int __val) {
return __atomic_fetch_add(__mem, __val, __ATOMIC_ACQ_REL);
}
// CHECK: define {{.*}} @exchange_and_add
// CHECK: atomicrmw {{.*}} add i32* {{.*}} acq_rel, align 4