| Chris Lattner | 5cc924a | 2005-05-07 04:23:29 +0000 | [diff] [blame] | 1 | ; With shl->mul reassociation, we can see that this is (shl A, 9) * A |
| 2 | ; |
| Dan Gohman | 3e054fe | 2009-09-08 22:34:10 +0000 | [diff] [blame] | 3 | ; RUN: opt %s -reassociate -instcombine -S |\ |
| Reid Spencer | 9aafdcf | 2007-04-15 09:21:47 +0000 | [diff] [blame] | 4 | ; RUN: grep {shl .*, 9} |
| Chris Lattner | 5cc924a | 2005-05-07 04:23:29 +0000 | [diff] [blame] | 5 | |
| Tanya Lattner | 7f40dea | 2008-03-19 04:36:04 +0000 | [diff] [blame] | 6 | define i32 @test(i32 %A, i32 %B) { |
| 7 | %X = shl i32 %A, 5 ; <i32> [#uses=1] |
| 8 | %Y = shl i32 %A, 4 ; <i32> [#uses=1] |
| 9 | %Z = mul i32 %Y, %X ; <i32> [#uses=1] |
| 10 | ret i32 %Z |
| Chris Lattner | 5cc924a | 2005-05-07 04:23:29 +0000 | [diff] [blame] | 11 | } |
| Tanya Lattner | 7f40dea | 2008-03-19 04:36:04 +0000 | [diff] [blame] | 12 | |