gcc/testsuite/gcc.target/i386/mod-1.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-Os -mtune=generic" } */
   3
   4 typedef struct {
   5   int a;
   6 } VCR;
   7
   8 typedef struct {
   9   VCR vcr[8];
  10 } VCRC;
  11
  12 typedef struct {
  13   char vcr;
  14 } OWN;
  15
  16 OWN Own[16];
  17
  18 void
  19 f (VCRC *x, OWN *own)
  20 {
  21   x[own->vcr / 8].vcr[own->vcr % 8].a--;
  22   x[own->vcr / 8].vcr[own->vcr % 8].a = x[own->vcr / 8].vcr[own->vcr % 8].a;
  23 }
  24
  25 /* { dg-final { scan-assembler-times "idivb" 1 } } */
  26 /* { dg-final { scan-assembler-not "incl" } } */
  27 /* { dg-final { scan-assembler-not "orl" } } */
  28 /* { dg-final { scan-assembler-not "andb" } } */
  29 /* { dg-final { scan-assembler-not "jns" } } */