| Tanya Lattner | 632e88a | 2008-02-21 07:42:26 +0000 | [diff] [blame] | 1 | ; RUN: llvm-as < %s | llc -march=x86 | grep lea |
| 2 | ; RUN: llvm-as < %s | llc -march=x86 | not grep add |
| Dan Gohman | f17a25c | 2007-07-18 16:29:46 +0000 | [diff] [blame] | 3 | |
| Tanya Lattner | 632e88a | 2008-02-21 07:42:26 +0000 | [diff] [blame] | 4 | define i32 @test(i32 %X, i32 %Y) { |
| Dan Gohman | f17a25c | 2007-07-18 16:29:46 +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 | 632e88a | 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 |
| Dan Gohman | f17a25c | 2007-07-18 16:29:46 +0000 | [diff] [blame] | 11 | } |
| 12 | |