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Differential D36807

[AArch64] Restore the test of conditional branch fusion
ClosedPublic

Authored by evandro on Aug 16 2017, 1:36 PM.

Details

Reviewers
mcrosier
Commits
rGbc11ca1a3167: [AArch64] Restore the test of conditional branch fusion
rL311389: [AArch64] Restore the test of conditional branch fusion
Summary

Restore the functionality of this test that was broken by https://reviews.llvm.org/rL306144.

Diff Detail

Repository
rL LLVM

Event Timeline

evandro created this revision.Aug 16 2017, 1:36 PM
Herald added subscribers: kristof.beyls, javed.absar, rengolin, aemerson. · View Herald TranscriptAug 16 2017, 1:36 PM
mcrosier accepted this revision.Aug 18 2017, 12:36 PM

Thanks, Evandro.

This revision is now accepted and ready to land.Aug 18 2017, 12:36 PM
Closed by commit rL311389: [AArch64] Restore the test of conditional branch fusion (authored by evandro). · Explain WhyAug 21 2017, 2:59 PM
This revision was automatically updated to reflect the committed changes.

Revision Contents

PathSize
llvm/
trunk/
test/
CodeGen/
AArch64/
10 lines

Diff 112065

llvm/trunk/test/CodeGen/AArch64/misched-fusion.ll

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