| Bob Wilson | 5dde893 | 2011-04-19 18:11:49 +0000 | [diff] [blame] | 1 | ; RUN: llc < %s -mtriple=thumbv7-apple-darwin -mcpu=cortex-a9 | FileCheck %s |
| 2 | ; Avoid some 's' 16-bit instruction which partially update CPSR (and add false |
| 3 | ; dependency) when it isn't dependent on last CPSR defining instruction. |
| 4 | ; rdar://8928208 |
| 5 | |
| 6 | define i32 @t(i32 %a, i32 %b, i32 %c, i32 %d) nounwind readnone { |
| 7 | entry: |
| 8 | ; CHECK: t: |
| Jim Grosbach | a17f669 | 2011-08-19 23:10:31 +0000 | [diff] [blame] | 9 | ; CHECK: muls [[REG:(r[0-9]+)]], r2, r3 |
| 10 | ; CHECK-NEXT: mul [[REG2:(r[0-9]+)]], r0, r1 |
| 11 | ; CHECK-NEXT: muls r0, [[REG2]], [[REG]] |
| Bob Wilson | 5dde893 | 2011-04-19 18:11:49 +0000 | [diff] [blame] | 12 | %0 = mul nsw i32 %a, %b |
| 13 | %1 = mul nsw i32 %c, %d |
| 14 | %2 = mul nsw i32 %0, %1 |
| 15 | ret i32 %2 |
| 16 | } |