| Dan Gohman | 946223f | 2009-05-11 18:02:53 +0000 | [diff] [blame] | 1 | ; RUN: llvm-as < %s | llc -march=x86-64 > %t |
| 2 | ; RUN: grep negl %t | count 1 |
| 3 | ; RUN: not grep sub %t |
| 4 | ; RUN: grep mov %t | count 1 |
| 5 | ; RUN: grep {leal -4(} %t | count 1 |
| 6 | |
| 7 | ; ISel the add of -4 with a neg and use an lea for the rest of the |
| 8 | ; arithemtic. |
| 9 | |
| 10 | define i32 @test(i32 %x_offs) nounwind readnone { |
| 11 | entry: |
| 12 | %t0 = icmp sgt i32 %x_offs, 4 ; <i1> [#uses=1] |
| 13 | br i1 %t0, label %bb.nph, label %bb2 |
| 14 | |
| 15 | bb.nph: ; preds = %entry |
| 16 | %tmp = add i32 %x_offs, -5 ; <i32> [#uses=1] |
| 17 | %tmp6 = lshr i32 %tmp, 2 ; <i32> [#uses=1] |
| 18 | %tmp7 = mul i32 %tmp6, -4 ; <i32> [#uses=1] |
| 19 | %tmp8 = add i32 %tmp7, %x_offs ; <i32> [#uses=1] |
| 20 | %tmp9 = add i32 %tmp8, -4 ; <i32> [#uses=1] |
| 21 | ret i32 %tmp9 |
| 22 | |
| 23 | bb2: ; preds = %entry |
| 24 | ret i32 %x_offs |
| 25 | } |