From 749993640bf6072a68b0a52dbda5555944190beb Mon Sep 17 00:00:00 2001 From: Evandro Menezes Date: Wed, 2 Aug 2017 15:34:06 +0000 Subject: [PATCH] [AArch64] Improve the test of conditional branch fusion Separate the checking of the fused pairings with B.cc and CBcc. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@309825 91177308-0d34-0410-b5e6-96231b3b80d8 --- test/CodeGen/AArch64/misched-fusion.ll | 30 +++++++++++++++++++++++++----- 1 file changed, 25 insertions(+), 5 deletions(-) diff --git a/test/CodeGen/AArch64/misched-fusion.ll b/test/CodeGen/AArch64/misched-fusion.ll index ee6007e393c..59c3583e3d1 100644 --- a/test/CodeGen/AArch64/misched-fusion.ll +++ b/test/CodeGen/AArch64/misched-fusion.ll @@ -1,14 +1,34 @@ -; RUN: llc -o - %s -mattr=+arith-cbz-fusion | FileCheck %s -; RUN: llc -o - %s -mcpu=cyclone | FileCheck %s +; RUN: llc -o - %s -mattr=+arith-bcc-fusion | FileCheck --check-prefix=FUSEBCC %s +; RUN: llc -o - %s -mattr=+arith-cbz-fusion | FileCheck --check-prefix=FUSECBZ %s +; RUN: llc -o - %s -mcpu=cyclone | FileCheck --check-prefix=FUSEBCC --check-prefix=FUSECBZ %s 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 -; CHECK-LABEL: test_sub_cbz: -; CHECK: subs w[[SUBRES:[0-9]+]], w0, #13 -; CHECK: b.ne {{.?LBB[0-9_]+}} +; FUSECBZ-LABEL: test_sub_cbz: +; FUSECBZ: subs [[SUBRES:w[0-9]+]], w0, #13 +; FUSECBZ: b.ne {{.?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 -- 2.11.0