| /* { dg-do run } */ |
| /* { dg-skip-if "ARC700 always has mpy option on" { arc700 } } */ |
| /* { dg-skip-if "ARC600 doesn't have mpy instruction" { arc6xx } } */ |
| /* { dg-options "-O2 -mmpy-option=0 -w -save-temps" } */ |
| |
| #include <stdlib.h> |
| |
| /* Hide value propagation from the optimizers. */ |
| static int |
| id (int i) |
| { |
| asm ("": "+r" (i)); |
| return i; |
| } |
| |
| static int |
| mulhigh (unsigned a, unsigned b) |
| { |
| return (unsigned long long) a * b >> 32; |
| } |
| |
| int |
| main (void) |
| { |
| if (mulhigh (id (0x12345678), id (0x90abcdef)) != 0xa49a83e) |
| abort (); |
| return 0; |
| } |
| |
| /* { dg-final { scan-assembler-not "mpyhu\[ \t\]" } } */ |
| /* { dg-final { scan-assembler "@__muldi3" } } */ |
