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1319446195
...and set max vector register size based on target This patch is based on discussion on the llvmdev mailing list: http://lists.cs.uiuc.edu/pipermail/llvmdev/2015-July/087405.html and also solves: https://llvm.org/bugs/show_bug.cgi?id=17170 Several FIXME/TODO items are noted in comments as potential improvements. Differential Revision: http://reviews.llvm.org/D10950 llvm-svn: 241760
43 lines
1.8 KiB
LLVM
43 lines
1.8 KiB
LLVM
; RUN: opt < %s -basicaa -slp-vectorizer -S |FileCheck %s
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target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-unknown"
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; Test if SLP can handle GEP expressions.
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; The test perform the following action:
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; x->first = y->first + 16
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; x->second = y->second + 16
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; CHECK-LABEL: foo1
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; CHECK: <2 x i32*>
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define void @foo1 ({ i32*, i32* }* noalias %x, { i32*, i32* }* noalias %y) {
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%1 = getelementptr inbounds { i32*, i32* }, { i32*, i32* }* %y, i64 0, i32 0
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%2 = load i32*, i32** %1, align 8
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%3 = getelementptr inbounds i32, i32* %2, i64 16
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%4 = getelementptr inbounds { i32*, i32* }, { i32*, i32* }* %x, i64 0, i32 0
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store i32* %3, i32** %4, align 8
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%5 = getelementptr inbounds { i32*, i32* }, { i32*, i32* }* %y, i64 0, i32 1
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%6 = load i32*, i32** %5, align 8
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%7 = getelementptr inbounds i32, i32* %6, i64 16
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%8 = getelementptr inbounds { i32*, i32* }, { i32*, i32* }* %x, i64 0, i32 1
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store i32* %7, i32** %8, align 8
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ret void
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}
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; Test that we don't vectorize GEP expressions if indexes are not constants.
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; We can't produce an efficient code in that case.
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; CHECK-LABEL: foo2
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; CHECK-NOT: <2 x i32*>
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define void @foo2 ({ i32*, i32* }* noalias %x, { i32*, i32* }* noalias %y, i32 %i) {
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%1 = getelementptr inbounds { i32*, i32* }, { i32*, i32* }* %y, i64 0, i32 0
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%2 = load i32*, i32** %1, align 8
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%3 = getelementptr inbounds i32, i32* %2, i32 %i
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%4 = getelementptr inbounds { i32*, i32* }, { i32*, i32* }* %x, i64 0, i32 0
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store i32* %3, i32** %4, align 8
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%5 = getelementptr inbounds { i32*, i32* }, { i32*, i32* }* %y, i64 0, i32 1
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%6 = load i32*, i32** %5, align 8
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%7 = getelementptr inbounds i32, i32* %6, i32 %i
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%8 = getelementptr inbounds { i32*, i32* }, { i32*, i32* }* %x, i64 0, i32 1
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store i32* %7, i32** %8, align 8
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ret void
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}
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