| Matthias Braun | e536f4f | 2015-07-20 22:34:47 +0000 | [diff] [blame^] | 1 | ; RUN: llc -o - %s -mcpu=cyclone | FileCheck %s |
| 2 | target triple = "arm64-apple-ios" |
| 3 | |
| 4 | declare void @foobar(i32 %v0, i32 %v1) |
| 5 | |
| 6 | ; Make sure sub is scheduled in front of cbnz |
| 7 | ; CHECK-LABEL: test_sub_cbz: |
| 8 | ; CHECK: add w[[ADDRES:[0-9]+]], w1, #7 |
| 9 | ; CHECK: sub w[[SUBRES:[0-9]+]], w0, #13 |
| 10 | ; CHECK-NEXT: cbnz w[[SUBRES]], [[SKIPBLOCK:LBB[0-9_]+]] |
| 11 | ; CHECK: mov x0, x[[ADDRES]] |
| 12 | ; CHECK: mov x1, x[[SUBRES]] |
| 13 | ; CHECK: bl _foobar |
| 14 | ; CHECK: [[SKIPBLOCK]]: |
| 15 | ; CHECK: mov x0, x[[SUBRES]] |
| 16 | ; CHECK: mov x1, x[[ADDRES]] |
| 17 | ; CHECK: bl _foobar |
| 18 | define void @test_sub_cbz(i32 %a0, i32 %a1) { |
| 19 | entry: |
| 20 | ; except for the fusion opportunity the sub/add should be equal so the |
| 21 | ; scheduler would leave them in source order if it weren't for the scheduling |
| 22 | %v0 = sub i32 %a0, 13 |
| 23 | %cond = icmp eq i32 %v0, 0 |
| 24 | %v1 = add i32 %a1, 7 |
| 25 | br i1 %cond, label %if, label %exit |
| 26 | |
| 27 | if: |
| 28 | call void @foobar(i32 %v1, i32 %v0) |
| 29 | br label %exit |
| 30 | |
| 31 | exit: |
| 32 | call void @foobar(i32 %v0, i32 %v1) |
| 33 | ret void |
| 34 | } |