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Fixed lowering of v816 shuffles.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63252 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Mon P Wang 2009-01-28 23:11:14 +00:00
parent 7540561097
commit e91a000889
2 changed files with 15 additions and 1 deletions
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2
lib/Target/X86/X86ISelLowering.cpp
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@ -3677,7 +3677,7 @@ SDValue LowerVECTOR_SHUFFLEv8i16(SDValue V1, SDValue V2,
++V2InOrder;
} else if (EltIdx < 8) {
V1Elts.push_back(Elt);
V2Elts.push_back(DAG.getConstant(i+8, MaskEVT));
V2Elts.push_back(DAG.getConstant(EltIdx+8, MaskEVT));
++V1FromV1;
} else {
V1Elts.push_back(Elt);

14
test/CodeGen/X86/vec_shuffle-29.ll Normal file
View File

@ -0,0 +1,14 @@
; RUN: llvm-as < %s | llc -march=x86 -mattr=sse41 -disable-mmx -o %t -f
; RUN: not grep pextrw %t
; RUN: grep pinsrw %t
; Test for v8xi16 lowering where we extract the first element of the vector and
; placed it in the second element of the result.
define void @test_cl(<8 x i16> addrspace(1)* %dest, <8 x i16> addrspace(1)* %old) nounwind {
entry:
%tmp3 = load <8 x i16> addrspace(1)* %old ; <<8 x i16>> [#uses=1]
%tmp6 = shufflevector <8 x i16> %tmp3, <8 x i16> < i16 0, i16 undef, i16 undef, i16 undef, i16 undef, i16 undef, i16 undef, i16 undef >, <8 x i32> < i32 8, i32 0, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef > ; <<8 x i16>> [#uses=1]
store <8 x i16> %tmp6, <8 x i16> addrspace(1)* %dest
ret void
}