gcc/testsuite/gcc.target/i386/pr47735.c

   1 /* PR middle-end/47735 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-O2 -fomit-frame-pointer" } */
   4
   5 unsigned
   6 mulh (unsigned a, unsigned b)
   7 {
   8   unsigned long long l __attribute__ ((aligned (32)))
   9     = ((unsigned long long) a * (unsigned long long) b) >> 32;
  10   return l;
  11 }
  12
  13 /* No need to dynamically realign the stack here.  */
  14 /* { dg-final { scan-assembler-not "and\[^\n\r]*%\[re\]sp" } } */
  15 /* Nor use a frame pointer.  */
  16 /* { dg-final { scan-assembler-not "%\[re\]bp" } } */