| Edward O'Callaghan | 81fff07 | 2009-11-22 11:45:44 +0000 | [diff] [blame] | 1 | ; RUN: llc < %s -march=arm -mattr=+v6t2 | FileCheck %s |
| Bob Wilson | eb1641d | 2012-09-29 21:43:49 +0000 | [diff] [blame] | 2 | ; RUN: llc < %s -march=arm -mattr=+v6t2 -arm-use-mulops=false | FileCheck %s -check-prefix=NO_MULOPS |
| Evan Cheng | edcbada | 2009-07-06 22:05:45 +0000 | [diff] [blame] | 3 | |
| 4 | define i32 @f1(i32 %a, i32 %b, i32 %c) { |
| 5 | %tmp1 = mul i32 %a, %b |
| 6 | %tmp2 = sub i32 %c, %tmp1 |
| 7 | ret i32 %tmp2 |
| 8 | } |
| 9 | |
| 10 | ; sub doesn't commute, so no mls for this one |
| 11 | define i32 @f2(i32 %a, i32 %b, i32 %c) { |
| 12 | %tmp1 = mul i32 %a, %b |
| 13 | %tmp2 = sub i32 %tmp1, %c |
| 14 | ret i32 %tmp2 |
| 15 | } |
| Edward O'Callaghan | 81fff07 | 2009-11-22 11:45:44 +0000 | [diff] [blame] | 16 | |
| Bob Wilson | eb1641d | 2012-09-29 21:43:49 +0000 | [diff] [blame] | 17 | ; CHECK: f1: |
| Edward O'Callaghan | 81fff07 | 2009-11-22 11:45:44 +0000 | [diff] [blame] | 18 | ; CHECK: mls r0, r0, r1, r2 |
| Bob Wilson | eb1641d | 2012-09-29 21:43:49 +0000 | [diff] [blame] | 19 | ; NO_MULOPS: f1: |
| 20 | ; NO_MULOPS: mul r0, r0, r1 |
| 21 | ; NO_MULOPS-NEXT: sub r0, r2, r0 |
| 22 | |
| 23 | ; CHECK: f2: |
| 24 | ; CHECK: mul r0, r0, r1 |
| 25 | ; CHECK-NEXT: sub r0, r0, r2 |
| 26 | ; NO_MULOPS: f2: |
| 27 | ; NO_MULOPS: mul r0, r0, r1 |
| 28 | ; NO_MULOPS-NEXT: sub r0, r0, r2 |