File: unaligned-memcpy-3.c

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gcc-arm-none-eabi 15%3A8-2019-q3-1
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/* { dg-do compile } */
/* { dg-require-effective-target arm_unaligned } */
/* { dg-options "-O2" } */

#include <string.h>

char src[16] = {0};

void aligned_src (char *dest)
{
  memcpy (dest, src, 15);
}

/* Expect a multi-word load for the main part of the copy, but subword
   loads/stores for the remainder.  */

/* { dg-final { scan-assembler-times "ldmia" 1 { target { ! { arm_prefer_ldrd_strd } } } } } */
/* { dg-final { scan-assembler-times "ldrd" 1 { target { arm_prefer_ldrd_strd } } } } */
/* { dg-final { scan-assembler-times "strd" 0 } } */
/* { dg-final { scan-assembler-times "stm" 0 } } */
/* { dg-final { scan-assembler-times "ldrh" 1 { target { ! { arm_prefer_ldrd_strd } } } } } */
/* { dg-final { scan-assembler-times "strh" 1 } } */
/* { dg-final { scan-assembler-times "ldrb" 1 { target { ! { arm_prefer_ldrd_strd } } } } } */
/* { dg-final { scan-assembler-times "strb" 1 } } */