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6c79131e39
If all of the inputs are zero/any_extended, create a new simple BV which can be further optimized by other BV optimizations. llvm-svn: 143297
17 lines
354 B
LLVM
17 lines
354 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: pshufd
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;CHECK: pshufd
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;CHECK: ret
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define void @ltstore() {
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entry:
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%in = load <4 x i32>* undef
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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>* undef
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ret void
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}
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