| /* { dg-do compile } */ |
| /* { dg-options "-O3 -mhwmult=f5series" } */ |
| /* { dg-final { check-function-bodies "**" "" } } */ |
| |
| /* Verify the MSP430 cost model is working as expected for the default ISA |
| (msp430x) and f5series hwmult, when compiling at -O3. */ |
| |
| volatile unsigned long a; |
| volatile unsigned int b; |
| volatile unsigned long c; |
| unsigned long res1; |
| unsigned long res2; |
| unsigned long res3; |
| |
| /* |
| ** foo: |
| ** ... |
| ** MOV.B #16, R14 |
| ** CALL.* #__mspabi_slll |
| ** ... |
| ** MOV.* \&res2.* |
| ** ... |
| ** RLA.*RLC.* |
| ** ... |
| ** MOV.* \&res3.* |
| ** ... |
| ** RLA.*RLC.* |
| ** ... |
| */ |
| void foo (void) |
| { |
| /* Use the shift library function for this. */ |
| res1 = (a << 16) | b; |
| /* Emit 7 inline shifts for this. */ |
| res2 *= 128; |
| /* Perform this multiplication inline, using addition and shifts. */ |
| res3 *= 100; |
| } |
