28 lines
917 B
C
28 lines
917 B
C
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// RUN: %clang_cc1 -triple s390x-linux-gnu -O1 -emit-llvm %s -o - 2>&1 | FileCheck %s
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//
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// Test that an underaligned 16 byte __sync gives a warning.
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#include <stdint.h>
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__int128 Ptr __attribute__((aligned(8)));
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__int128 f1() {
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// CHECK: warning: __sync builtin operation MUST have natural alignment (consider using __atomic). [-Wsync-alignment]
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return __sync_fetch_and_add(&Ptr, 1);
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}
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__int128 f2() {
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// CHECK: warning: __sync builtin operation MUST have natural alignment (consider using __atomic). [-Wsync-alignment]
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return __sync_sub_and_fetch(&Ptr, 1);
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}
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__int128 f3() {
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// CHECK: warning: __sync builtin operation MUST have natural alignment (consider using __atomic). [-Wsync-alignment]
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return __sync_val_compare_and_swap(&Ptr, 0, 1);
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}
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void f4() {
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// CHECK: warning: __sync builtin operation MUST have natural alignment (consider using __atomic). [-Wsync-alignment]
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__sync_lock_release(&Ptr);
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}
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