gcc/testsuite/gcc.target/i386/pr66112-2.c

   1 /* PR target/66112 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-O2" } */
   4
   5 unsigned short int
   6 foo (int a, int b)
   7 {
   8   unsigned short int res;
   9   a &= 0xffff;
  10   b &= 0xffff;
  11   if (__builtin_mul_overflow (a, b, &res))
  12     res = 0x123;
  13   return res;
  14 }
  15
  16 short int
  17 bar (int a, int b)
  18 {
  19   short int res;
  20   a = (short int) a;
  21   b = (short int) b;
  22   if (__builtin_mul_overflow (a, b, &res))
  23     res = 0x123;
  24   return res;
  25 }
  26
  27 /* { dg-final { scan-assembler-times "jn?o\[ \t\]" 2 } } */
  28 /* { dg-final { scan-assembler-times "mulw\[ \t\]" 2 } } */
  29 /* { dg-final { scan-assembler-times "imulw\[ \t\]" 1 } } */