gcc/testsuite/gcc.target/mips/mult-4.c

   1 /* This test requires widening_mul */
   2 /* { dg-options "-mgp64 (-mips16) -fexpensive-optimizations" } */
   3 /* { dg-skip-if "code quality test" { *-*-* } { "-O0" } { "" } } */
   4 /* { dg-final { scan-assembler "\tdmult\t" } } */
   5 /* { dg-final { scan-assembler "\tmfhi\t" } } */
   6 /* { dg-final { scan-assembler-not "\tmflo\t" } } */
   7
   8 typedef int TI __attribute__((mode(TI)));
   9 typedef int DI __attribute__((mode(DI)));
  10
  11 MIPS16 DI
  12 f (DI x, DI y)
  13 {
  14   return ((TI) x * y) >> 64;
  15 }