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Improve the loading of load-anyext vectors by allowing the codegen to load

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multiple scalars and insert them into a vector. Next, we shuffle the elements
into the correct places, as before.
Also fix a small dagcombine bug in SimplifyBinOpWithSameOpcodeHands, when the
migration of bitcasts happened too late in the SelectionDAG process.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159991 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Nadav Rotem
2012-07-10 13:25:08 +00:00
parent fae96f17b4
commit 2dd83eb1ab
5 changed files with 73 additions and 40 deletions
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2
lib/CodeGen/SelectionDAG/DAGCombiner.cpp
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@ -2340,7 +2340,7 @@ SDValue DAGCombiner::SimplifyBinOpWithSameOpcodeHands(SDNode *N) {
// We also handle SCALAR_TO_VECTOR because xor/or/and operations are cheaper
// on scalars.
if ((N0.getOpcode() == ISD::BITCAST || N0.getOpcode() == ISD::SCALAR_TO_VECTOR)
&& Level == AfterLegalizeVectorOps) {
&& Level == AfterLegalizeTypes) {
SDValue In0 = N0.getOperand(0);
SDValue In1 = N1.getOperand(0);
EVT In0Ty = In0.getValueType();