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Forgot to propagate debug loc info here. 

llvm-svn: 63371
This commit is contained in:
Bill Wendling 2009-01-30 02:49:26 +00:00
parent 1ee0d41ef8
commit b48dcf67e5
1 changed files with 4 additions and 2 deletions
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6
llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
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@ -1306,11 +1306,11 @@ SDValue DAGCombiner::visitMUL(SDNode *N) {
// single-use add), we should put the negate there.
return DAG.getNode(ISD::SUB, N->getDebugLoc(), VT,
DAG.getConstant(0, VT),
DAG.getNode(ISD::SHL, VT, N0,
DAG.getNode(ISD::SHL, N->getDebugLoc(), VT, N0,
DAG.getConstant(Log2_64(-N1C->getSExtValue()),
TLI.getShiftAmountTy())));
// (mul (shl X, c1), c2) -> (mul X, c2 << c1)
if (N1C && N0.getOpcode() == ISD::SHL &&
if (N1C && N0.getOpcode() == ISD::SHL &&
isa<ConstantSDNode>(N0.getOperand(1))) {
SDValue C3 = DAG.getNode(ISD::SHL, N->getDebugLoc(), VT,
N1, N0.getOperand(1));
@ -1332,6 +1332,7 @@ SDValue DAGCombiner::visitMUL(SDNode *N) {
N1.getNode()->hasOneUse()) {
Sh = N1; Y = N0;
}
if (Sh.getNode()) {
SDValue Mul = DAG.getNode(ISD::MUL, N->getDebugLoc(), VT,
Sh.getOperand(0), Y);
@ -1339,6 +1340,7 @@ SDValue DAGCombiner::visitMUL(SDNode *N) {
Mul, Sh.getOperand(1));
}
}
// fold (mul (add x, c1), c2) -> (add (mul x, c2), c1*c2)
if (N1C && N0.getOpcode() == ISD::ADD && N0.getNode()->hasOneUse() &&
isa<ConstantSDNode>(N0.getOperand(1)))