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d16c8d0d33
shuffle node because it could introduce new shuffle nodes that were not supported efficiently by the target. 2. Add a more restrictive shuffle-of-shuffle optimization for cases where the second shuffle reverses the transformation of the first shuffle. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154266 91177308-0d34-0410-b5e6-96231b3b80d8
17 lines
376 B
LLVM
17 lines
376 B
LLVM
; RUN: llc < %s -march=x86-64 -mcpu=corei7 | FileCheck %s
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target triple = "x86_64-unknown-linux-gnu"
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;CHECK: ltstore
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;CHECK: movq
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;CHECK: movq
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;CHECK: ret
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define void @ltstore(<4 x i32>* %pA, <2 x i32>* %pB) {
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entry:
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%in = load <4 x i32>* %pA
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%j = shufflevector <4 x i32> %in, <4 x i32> undef, <2 x i32> <i32 0, i32 1>
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store <2 x i32> %j, <2 x i32>* %pB
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ret void
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}
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