gcc/testsuite/gcc.dg/attr-opt-1.c

   1 /* PR c/70255 */
   2 /* { dg-do compile } */
   3
   4 double
   5 fn1 (double h, double l) /* { dg-message "previous definition" } */
   6 {
   7   return h + l;
   8 }
   9 double fn1 (double, double) __attribute__ ((optimize ("no-associative-math"))); /* { dg-warning "optimization attribute on .fn1. follows definition" } */
  10
  11 __attribute__ ((optimize ("no-associative-math"))) double
  12 fn2 (double h, double l)
  13 {
  14   return h + l;
  15 }
  16 double fn2 (double, double) __attribute__ ((optimize ("no-associative-math")));
  17
  18 __attribute__ ((optimize ("no-associative-math"))) double
  19 fn3 (double h, double l) /* { dg-message "previous definition" } */
  20 {
  21   return h + l;
  22 }
  23 double fn3 (double, double) __attribute__ ((optimize ("O2,no-associative-math"))); /* { dg-warning "optimization attribute on .fn3. follows definition" } */
  24
  25 __attribute__ ((optimize ("no-associative-math,O2"))) double
  26 fn4 (double h, double l) /* { dg-message "previous definition" } */
  27 {
  28   return h + l;
  29 }
  30 double fn4 (double, double) __attribute__ ((optimize ("O2,no-associative-math"))); /* { dg-warning "optimization attribute on .fn4. follows definition" } */
  31
  32 __attribute__ ((optimize ("no-reciprocal-math"), optimize ("no-associative-math"))) int
  33 fn5 (void)
  34 {
  35   return 0;
  36 }
  37 int __attribute__ ((optimize ("no-associative-math"), optimize ("no-reciprocal-math"))) fn5 (void);