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https://github.com/c64scene-ar/llvm-6502.git
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ea64dce261
This patch improves the target-specific cost model to better handle signed division by a power of two. The immediate result is that this enables the SLP vectorizer to do a better job. http://reviews.llvm.org/D5469 PR20714 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218607 91177308-0d34-0410-b5e6-96231b3b80d8
43 lines
1.6 KiB
LLVM
43 lines
1.6 KiB
LLVM
; RUN: opt < %s -basicaa -slp-vectorizer -S -mtriple=aarch64-unknown-linux-gnu -mcpu=cortex-a57 | FileCheck %s
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target datalayout = "e-m:e-i64:64-i128:128-n32:64-S128"
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target triple = "aarch64--linux-gnu"
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; CHECK-LABEL: @test1
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; CHECK: load <4 x i32>
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; CHECK: add nsw <4 x i32>
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; CHECK: sdiv <4 x i32>
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define void @test1(i32* noalias nocapture %a, i32* noalias nocapture readonly %b, i32* noalias nocapture readonly %c) {
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entry:
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%0 = load i32* %b, align 4
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%1 = load i32* %c, align 4
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%add = add nsw i32 %1, %0
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%div = sdiv i32 %add, 2
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store i32 %div, i32* %a, align 4
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%arrayidx3 = getelementptr inbounds i32* %b, i64 1
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%2 = load i32* %arrayidx3, align 4
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%arrayidx4 = getelementptr inbounds i32* %c, i64 1
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%3 = load i32* %arrayidx4, align 4
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%add5 = add nsw i32 %3, %2
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%div6 = sdiv i32 %add5, 2
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%arrayidx7 = getelementptr inbounds i32* %a, i64 1
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store i32 %div6, i32* %arrayidx7, align 4
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%arrayidx8 = getelementptr inbounds i32* %b, i64 2
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%4 = load i32* %arrayidx8, align 4
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%arrayidx9 = getelementptr inbounds i32* %c, i64 2
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%5 = load i32* %arrayidx9, align 4
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%add10 = add nsw i32 %5, %4
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%div11 = sdiv i32 %add10, 2
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%arrayidx12 = getelementptr inbounds i32* %a, i64 2
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store i32 %div11, i32* %arrayidx12, align 4
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%arrayidx13 = getelementptr inbounds i32* %b, i64 3
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%6 = load i32* %arrayidx13, align 4
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%arrayidx14 = getelementptr inbounds i32* %c, i64 3
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%7 = load i32* %arrayidx14, align 4
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%add15 = add nsw i32 %7, %6
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%div16 = sdiv i32 %add15, 2
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%arrayidx17 = getelementptr inbounds i32* %a, i64 3
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store i32 %div16, i32* %arrayidx17, align 4
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ret void
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}
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