28 lines · c
1// RUN: %clang_cc1 -triple s390x-linux-gnu -O1 -emit-llvm %s -o - 2>&1 | FileCheck %s2//3// Test that an underaligned 16 byte __sync gives a warning.4 5#include <stdint.h>6 7__int128 Ptr __attribute__((aligned(8)));8 9__int128 f1() {10// CHECK: warning: __sync builtin operation must have natural alignment (consider using __atomic)11 return __sync_fetch_and_add(&Ptr, 1);12}13 14__int128 f2() {15// CHECK: warning: __sync builtin operation must have natural alignment (consider using __atomic)16 return __sync_sub_and_fetch(&Ptr, 1);17}18 19__int128 f3() {20// CHECK: warning: __sync builtin operation must have natural alignment (consider using __atomic)21 return __sync_val_compare_and_swap(&Ptr, 0, 1);22}23 24void f4() {25// CHECK: warning: __sync builtin operation must have natural alignment (consider using __atomic)26 __sync_lock_release(&Ptr);27}28