| Dan Gohman | 36a0947 | 2009-09-08 23:54:48 +0000 | [diff] [blame] | 1 | ; RUN: llc < %s -march=x86 | grep lea |
| 2 | ; RUN: llc < %s -march=x86 | not grep add |
| Chris Lattner | cf6a9fb | 2006-03-01 03:43:38 +0000 | [diff] [blame] | 3 | |
| Tanya Lattner | 33eefff | 2008-02-21 07:42:26 +0000 | [diff] [blame] | 4 | define i32 @test(i32 %X, i32 %Y) { |
| Chris Lattner | cf6a9fb | 2006-03-01 03:43:38 +0000 | [diff] [blame] | 5 | ; Push the shl through the mul to allow an LEA to be formed, instead |
| 6 | ; of using a shift and add separately. |
| Tanya Lattner | 33eefff | 2008-02-21 07:42:26 +0000 | [diff] [blame] | 7 | %tmp.2 = shl i32 %X, 1 ; <i32> [#uses=1] |
| 8 | %tmp.3 = mul i32 %tmp.2, %Y ; <i32> [#uses=1] |
| 9 | %tmp.5 = add i32 %tmp.3, %Y ; <i32> [#uses=1] |
| 10 | ret i32 %tmp.5 |
| Chris Lattner | cf6a9fb | 2006-03-01 03:43:38 +0000 | [diff] [blame] | 11 | } |
| 12 | |