/* * Copyright 2002-2019 Intel Corporation. * * This software is provided to you as Sample Source Code as defined in the accompanying * End User License Agreement for the Intel(R) Software Development Products ("Agreement") * section 1.L. * * This software and the related documents are provided as is, with no express or implied * warranties, other than those that are expressly stated in the License. */ #include #if !defined(__GNUC__) extern void movdqa_test(char* p); #endif int main(int argc, char** argv) { char a[1000]; /* get in to the buffer and then align it by 16 */ static const size_t align16_mask = (16 - 1); /* Integer type size_t defined to have size of pointer */ char* b = (char*)(((size_t)a + align16_mask) & ~align16_mask); /* generate one aligned move and one unaligned move. The alignchk tool * should catch the latter one. */ #if defined(__GNUC__) char* c = b + 1; asm volatile("movdqa %%xmm0, %0" : "=m" (*b) : : "%xmm0"); asm volatile("movdqa %%xmm0, %0" : "=m" (*c) : : "%xmm0"); #else movdqa_test(b); #endif }