gcc/testsuite/gcc.target/arm/unaligned-memcpy-4.c

   1 /* { dg-do compile } */
   2 /* { dg-require-effective-target arm_unaligned } */
   3 /* { dg-options "-O2" } */
   4
   5 #include <string.h>
   6
   7 char src[16] = { 0 };
   8 char dest[16] = { 0 };
   9
  10 void aligned_both (void)
  11 {
  12   memcpy (dest, src, 15);
  13 }
  14
  15 /* We know both src and dest to be aligned: expect multiword loads/stores.  */
  16
  17 /* { dg-final { scan-assembler-times "ldm" 1 { target { ! { arm_prefer_ldrd_strd } } } } } */
  18 /* { dg-final { scan-assembler-times "stmia" 1 { target { ! { arm_prefer_ldrd_strd } } } } } */
  19 /* { dg-final { scan-assembler "ldrd" { target { arm_prefer_ldrd_strd } } } } */
  20 /* { dg-final { scan-assembler-times "ldm" 0 { target { arm_prefer_ldrd_strd } } } } */
  21 /* { dg-final { scan-assembler "strd" { target { arm_prefer_ldrd_strd } } } } */
  22 /* { dg-final { scan-assembler-times "stm" 0 { target { arm_prefer_ldrd_strd } } } } */