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Fix a thinko. If the operand is promoted, pass the promoted value into

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the new zero extend, not the original operand.  This fixes cast bool -> long
on ppc.

Add an unrelated fixme

llvm-svn: 21196
This commit is contained in:
Chris Lattner 2005-04-10 01:13:15 +00:00
parent c1bacbff9d
commit b3518a838c
2 changed files with 5 additions and 1 deletions
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2
lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
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@ -1937,7 +1937,7 @@ void SelectionDAGLegalize::ExpandOp(SDOperand Op, SDOperand &Lo, SDOperand &Hi){
// The low part is just a zero extension of the input (which degenerates to
// a copy).
Lo = DAG.getNode(ISD::ZERO_EXTEND, NVT, LegalizeOp(Node->getOperand(0)));
Lo = DAG.getNode(ISD::ZERO_EXTEND, NVT, In);
// The high part is just a zero.
Hi = DAG.getConstant(0, NVT);

4
lib/CodeGen/SelectionDAG/SelectionDAG.cpp
View File

@ -767,6 +767,10 @@ SDOperand SelectionDAG::getNode(unsigned Opcode, MVT::ValueType VT,
if (N2C->isAllOnesValue())
return N1; // X and -1 -> X
// FIXME: Should add a corresponding version of this for
// ZERO_EXTEND/SIGN_EXTEND by converting them to an ANY_EXTEND node which
// we don't have yet.
// and (zero_extend_inreg x:16:32), 1 -> and x, 1
if (N1.getOpcode() == ISD::ZERO_EXTEND_INREG ||
N1.getOpcode() == ISD::SIGN_EXTEND_INREG) {