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finally remove the immAllOnesV_bc/immAllZerosV_bc patterns

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and those derived from them.  These are obnoxious because
they were written as: PatLeaf<(bitconvert).  Not having an
argument was foiling adding better type checking for operand
count matching up with what was required (in this case,
bitconvert always requires an operand!)

llvm-svn: 99759
This commit is contained in:
Chris Lattner 2010-03-28 08:43:23 +00:00
parent e522e8f94e
commit 5ad69fe4b6
3 changed files with 1 additions and 9 deletions
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7
include/llvm/Target/TargetSelectionDAG.td
View File

@ -492,22 +492,15 @@ def vtFP : PatLeaf<(vt), [{ return N->getVT().isFloatingPoint(); }]>;
def immAllOnesV: PatLeaf<(build_vector), [{
return ISD::isBuildVectorAllOnes(N);
}]>;
def immAllOnesV_bc: PatLeaf<(bitconvert), [{
return ISD::isBuildVectorAllOnes(N);
}]>;
def immAllZerosV: PatLeaf<(build_vector), [{
return ISD::isBuildVectorAllZeros(N);
}]>;
def immAllZerosV_bc: PatLeaf<(bitconvert), [{
return ISD::isBuildVectorAllZeros(N);
}]>;
// Other helper fragments.
def not : PatFrag<(ops node:$in), (xor node:$in, -1)>;
def vnot : PatFrag<(ops node:$in), (xor node:$in, immAllOnesV)>;
def vnot_conv : PatFrag<(ops node:$in), (xor node:$in, immAllOnesV_bc)>;
def ineg : PatFrag<(ops node:$in), (sub 0, node:$in)>;
// load fragments.

2
lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
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@ -1809,7 +1809,7 @@ MorphNode(SDNode *Node, unsigned TargetOpc, SDVTList VTList,
// It is possible we're using MorphNodeTo to replace a node with no
// normal results with one that has a normal result (or we could be
// adding a chain) and the input could have flags and chains as well.
// In this case we need to shifting the operands down.
// In this case we need to shift the operands down.
// FIXME: This is a horrible hack and broken in obscure cases, no worse
// than the old isel though.
int OldFlagResultNo = -1, OldChainResultNo = -1;

1
utils/TableGen/CodeGenDAGPatterns.cpp
View File

@ -1604,7 +1604,6 @@ static bool SimplifyTree(TreePatternNode *&N) {
// If we have a bitconvert with a resolved type and if the source and
// destination types are the same, then the bitconvert is useless, remove it.
if (N->getOperator()->getName() == "bitconvert" &&
N->getNumChildren() > 0 && // FIXME
N->getExtType(0).isConcrete() &&
N->getExtType(0) == N->getChild(0)->getExtType(0) &&
N->getName().empty()) {