gcc/testsuite/gcc.target/i386/movq-2.c

   1 /* PR target/25199 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-Os -mtune=pentium4" } */
   4 /* { dg-require-effective-target ilp32 } */
   5
   6 struct S
   7 {
   8   void *p[30];
   9   unsigned char c[4];
  10 };
  11
  12 unsigned char d;
  13
  14 void
  15 foo (struct S *x)
  16 {
  17   register unsigned char e __asm ("esi");
  18   e = x->c[3];
  19   __asm __volatile ("" : : "r" (e));
  20   e = x->c[0];
  21   __asm __volatile ("" : : "r" (e));
  22 }
  23
  24 /* { dg-final { scan-assembler-not "movl\[ \t\]*123" } } */
  25 /* { dg-final { scan-assembler "movzbl\[ \t\]*123" } } */
  26 /* { dg-final { scan-assembler "mov(zb)?l\[ \t\]*120" } } */