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Teach SplitVectorOp how to split INSERT_VECTOR_ELT.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42457 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman 2007-09-28 23:53:40 +00:00
parent 763856526f
commit 9fe4662d9a
2 changed files with 30 additions and 0 deletions
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12
lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
View File

@ -5837,6 +5837,18 @@ void SelectionDAGLegalize::SplitVectorOp(SDOperand Op, SDOperand &Lo,
Lo = Node->getOperand(0);
Hi = Node->getOperand(1);
break;
case ISD::INSERT_VECTOR_ELT: {
SplitVectorOp(Node->getOperand(0), Lo, Hi);
unsigned Index = cast<ConstantSDNode>(Node->getOperand(2))->getValue();
SDOperand ScalarOp = Node->getOperand(1);
if (Index < NewNumElts)
Lo = DAG.getNode(ISD::INSERT_VECTOR_ELT, NewVT, Lo, ScalarOp,
DAG.getConstant(Index, TLI.getPointerTy()));
else
Hi = DAG.getNode(ISD::INSERT_VECTOR_ELT, NewVT, Hi, ScalarOp,
DAG.getConstant(Index - NewNumElts, TLI.getPointerTy()));
break;
}
case ISD::BUILD_VECTOR: {
SmallVector<SDOperand, 8> LoOps(Node->op_begin(),
Node->op_begin()+NewNumElts);

18
test/CodeGen/X86/illegal-insert.ll Normal file
View File

@ -0,0 +1,18 @@
; RUN: llvm-as %s -o - | llc -march=x86-64
define <4 x double> @foo0(<4 x double> %t) {
%r = insertelement <4 x double> %t, double 2.3, i32 0
ret <4 x double> %r
}
define <4 x double> @foo1(<4 x double> %t) {
%r = insertelement <4 x double> %t, double 2.3, i32 1
ret <4 x double> %r
}
define <4 x double> @foo2(<4 x double> %t) {
%r = insertelement <4 x double> %t, double 2.3, i32 2
ret <4 x double> %r
}
define <4 x double> @foo3(<4 x double> %t) {
%r = insertelement <4 x double> %t, double 2.3, i32 3
ret <4 x double> %r
}