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; RUN: llc -o - %s -mattr=+arith-cbz-fusion | FileCheck %s
; RUN: llc -o - %s -mcpu=cyclone | FileCheck %s
target triple = "aarch64-unknown"
declare void @foobar(i32 %v0, i32 %v1)
; Make sure sub is scheduled in front of cbnz
; CHECK-LABEL: test_sub_cbz:
; CHECK: sub w[[SUBRES:[0-9]+]], w0, #13
; CHECK-NEXT: cbnz w[[SUBRES]], {{.?LBB[0-9_]+}}
define void @test_sub_cbz(i32 %a0, i32 %a1) {
entry:
; except for the fusion opportunity the sub/add should be equal so the
; scheduler would leave them in source order if it weren't for the scheduling
%v0 = sub i32 %a0, 13
%cond = icmp eq i32 %v0, 0
%v1 = add i32 %a1, 7
br i1 %cond, label %if, label %exit
if:
call void @foobar(i32 %v1, i32 %v0)
br label %exit
exit:
call void @foobar(i32 %v0, i32 %v1)
ret void
}
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