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Addition to r216371 (SLP and Loop Vectorization) and r218607 where

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cost model for signed division by power of 2 was improved for AArch64.
The revision r218607 missed test case for Loop Vectorization.
Adding it in this revision.

Differential Revision: http://reviews.llvm.org/D6181



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221674 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Suyog Sarda 2014-11-11 07:39:27 +00:00
parent 20d2a260c9
commit e190f77f91
1 changed files with 31 additions and 0 deletions
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31
test/Transforms/LoopVectorize/AArch64/sdiv-pow2.ll Normal file
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; RUN: opt < %s -loop-vectorize -mtriple=aarch64-unknown-linux-gnu -mcpu=cortex-a57 -S | FileCheck %s
target datalayout = "e-m:e-i64:64-i128:128-n32:64-S128"
target triple = "aarch64--linux-gnu"
%struct.anon = type { [100 x i32], i32, [100 x i32] }
@Foo = common global %struct.anon zeroinitializer, align 4
; CHECK-LABEL: @foo(
; CHECK: load <4 x i32>*
; CHECK: sdiv <4 x i32>
; CHECK: store <4 x i32>
define void @foo(){
entry:
br label %for.body
for.body: ; preds = %for.body, %entry
%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
%arrayidx = getelementptr inbounds %struct.anon* @Foo, i64 0, i32 2, i64 %indvars.iv
%0 = load i32* %arrayidx, align 4
%div = sdiv i32 %0, 2
%arrayidx2 = getelementptr inbounds %struct.anon* @Foo, i64 0, i32 0, i64 %indvars.iv
store i32 %div, i32* %arrayidx2, align 4
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
%exitcond = icmp eq i64 %indvars.iv.next, 100
br i1 %exitcond, label %for.end, label %for.body
for.end: ; preds = %for.body
ret void
}