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| ; RUN: llc -o - %s -mtriple=aarch64-unknown -aarch64-enable-cond-br-tune=false -mattr=+arith-bcc-fusion | FileCheck %s --check-prefix=FUSEBCC
; RUN: llc -o - %s -mtriple=aarch64-unknown -aarch64-enable-cond-br-tune=false -mattr=+arith-cbz-fusion | FileCheck %s --check-prefix=FUSECBZ
; RUN: llc -o - %s -mtriple=aarch64-unknown -aarch64-enable-cond-br-tune=false -mcpu=cyclone | FileCheck %s --check-prefix=FUSEBCC --check-prefix=FUSECBZ
target triple = "aarch64-unknown"
declare void @foobar(i32 %v0, i32 %v1)
; Make sure cmp is scheduled in front of bcc
; FUSEBCC-LABEL: test_cmp_bcc:
; FUSEBCC: cmp {{w[0-9]+}}, #13
; FUSEBCC-NEXT: b.ne {{.?LBB[0-9_]+}}
define void @test_cmp_bcc(i32 %a0, i32 %a1) {
entry:
%cond = icmp eq i32 %a0, 13
%v1 = add i32 %a1, 7
br i1 %cond, label %if, label %exit
if:
call void @foobar(i32 %v1, i32 %a0)
br label %exit
exit:
call void @foobar(i32 %a0, i32 %v1)
ret void
}
; Make sure sub is scheduled in front of cbnz
; FUSECBZ-LABEL: test_sub_cbz:
; FUSECBZ: sub [[R:w[0-9]+]], {{w[0-9]+}}, #13
; FUSECBZ-NEXT: cbnz [[R]], {{.?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
}
|