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51409214d7
This is about 4x faster and smaller than the existing scalarization. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109566 91177308-0d34-0410-b5e6-96231b3b80d8
26 lines
722 B
LLVM
26 lines
722 B
LLVM
; RUN: llc < %s -march=x86 -mattr=+sse41 | FileCheck %s
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define <2 x i64> @shl1(<4 x i32> %r, <4 x i32> %a) nounwind readnone ssp {
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entry:
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; CHECK-NOT: shll
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; CHECK: pslld
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; CHECK: paddd
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; CHECK: cvttps2dq
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; CHECK: pmulld
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%shl = shl <4 x i32> %r, %a ; <<4 x i32>> [#uses=1]
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%tmp2 = bitcast <4 x i32> %shl to <2 x i64> ; <<2 x i64>> [#uses=1]
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ret <2 x i64> %tmp2
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}
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define <2 x i64> @shl2(<16 x i8> %r, <16 x i8> %a) nounwind readnone ssp {
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entry:
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; CHECK-NOT: shlb
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; CHECK: pblendvb
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; CHECK: pblendvb
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; CHECK: pblendvb
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%shl = shl <16 x i8> %r, %a ; <<16 x i8>> [#uses=1]
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%tmp2 = bitcast <16 x i8> %shl to <2 x i64> ; <<2 x i64>> [#uses=1]
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ret <2 x i64> %tmp2
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}
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