gcc/testsuite/gcc.target/arm/thumb2-mul-speed.c

   1 /* Do not use 16-bit multiply instructions in Thumb-2 mode when
   2    optimizing for speed.  */
   3 /* { dg-options "-mthumb -O2" }  */
   4 /* { dg-require-effective-target arm_thumb2_ok } */
   5 /* { dg-final { scan-assembler-not "muls" } } */
   6
   7 int f(int i, int j)
   8 {
   9   return i * j;
  10 }
  11
  12 int x;
  13
  14 void g(int i, int j)
  15 {
  16   if (i * j < 0)
  17     x = 1;
  18 }
  19
  20 int h(int i, int j)
  21 {
  22   i = i * j;
  23   if (i < 0)
  24     x = 1;
  25   return i;
  26 }
  27