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It should be ok for a xform output type to be different from input type.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26899 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2006-03-20 08:09:17 +00:00
parent dd4d2d0e40
commit f26ba69725
1 changed files with 17 additions and 5 deletions
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22
utils/TableGen/DAGISelEmitter.cpp
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@ -694,14 +694,26 @@ bool TreePatternNode::ApplyTypeConstraints(TreePattern &TP, bool NotRegisters) {
} else {
assert(getOperator()->isSubClassOf("SDNodeXForm") && "Unknown node type!");
// Node transforms always take one operand, and take and return the same
// type.
// Node transforms always take one operand.
if (getNumChildren() != 1)
TP.error("Node transform '" + getOperator()->getName() +
"' requires one operand!");
bool MadeChange = UpdateNodeType(getChild(0)->getExtTypes(), TP);
MadeChange |= getChild(0)->UpdateNodeType(getExtTypes(), TP);
return MadeChange;
unsigned char ExtType0 = getExtTypeNum(0);
unsigned char ChildExtType0 = getChild(0)->getExtTypeNum(0);
if (ExtType0 == MVT::isInt ||
ExtType0 == MVT::isFP ||
ExtType0 == MVT::isUnknown ||
ChildExtType0 == MVT::isInt ||
ChildExtType0 == MVT::isFP ||
ChildExtType0 == MVT::isUnknown) {
// If either the output or input of the xform does not have exact
// type info. We assume they must be the same. Otherwise, it is perfectly
// legal to transform from one type to a completely different type.
bool MadeChange = UpdateNodeType(getChild(0)->getExtTypes(), TP);
MadeChange |= getChild(0)->UpdateNodeType(getExtTypes(), TP);
return MadeChange;
}
return false;
}
}