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https://github.com/c64scene-ar/llvm-6502.git
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e637d65af3
This patch adds support to recognize division by uniform power of 2 and modifies the cost table to vectorize division by uniform power of 2 whenever possible. Updates Cost model for Loop and SLP Vectorizer.The cost table is currently only updated for X86 backend. Thanks to Hal, Andrea, Sanjay for the review. (http://reviews.llvm.org/D4971) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216371 91177308-0d34-0410-b5e6-96231b3b80d8
44 lines
1.6 KiB
LLVM
44 lines
1.6 KiB
LLVM
; RUN: opt < %s -basicaa -slp-vectorizer -S -mtriple=x86_64-unknown-linux-gnu -mcpu=corei7-avx | FileCheck %s
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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;CHECK-LABEL: @powof2div(
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;CHECK: load <4 x i32>*
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;CHECK: add <4 x i32>
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;CHECK: sdiv <4 x i32>
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define void @powof2div(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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