1; RUN: llc -o - %s -mattr=+macroop-fusion,+use-postra-scheduler | FileCheck %s
2; RUN: llc -o - %s -mcpu=cyclone | FileCheck %s
3
4target triple = "arm64-apple-ios"
5
6declare void @foobar(i32 %v0, i32 %v1)
7
8; Make sure sub is scheduled in front of cbnz
9; CHECK-LABEL: test_sub_cbz:
10; CHECK: add w[[ADDRES:[0-9]+]], w1, #7
11; CHECK: sub w[[SUBRES:[0-9]+]], w0, #13
12; CHECK-NEXT: cbnz w[[SUBRES]], [[SKIPBLOCK:LBB[0-9_]+]]
13; CHECK: mov [[REGTY:[x,w]]]0, [[REGTY]][[ADDRES]]
14; CHECK: mov [[REGTY]]1, [[REGTY]][[SUBRES]]
15; CHECK: bl _foobar
16; CHECK: [[SKIPBLOCK]]:
17; CHECK: mov [[REGTY]]0, [[REGTY]][[SUBRES]]
18; CHECK: mov [[REGTY]]1, [[REGTY]][[ADDRES]]
19; CHECK: bl _foobar
20define void @test_sub_cbz(i32 %a0, i32 %a1) {
21entry:
22  ; except for the fusion opportunity the sub/add should be equal so the
23  ; scheduler would leave them in source order if it weren't for the scheduling
24  %v0 = sub i32 %a0, 13
25  %cond = icmp eq i32 %v0, 0
26  %v1 = add i32 %a1, 7
27  br i1 %cond, label %if, label %exit
28
29if:
30  call void @foobar(i32 %v1, i32 %v0)
31  br label %exit
32
33exit:
34  call void @foobar(i32 %v0, i32 %v1)
35  ret void
36}
37