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Propagate debug loc info for ANY_EXTEND. 

llvm-svn: 63436
This commit is contained in:
Bill Wendling 2009-01-30 22:27:33 +00:00
parent d42a0fb41b
commit 9b3dc8d848
1 changed files with 16 additions and 12 deletions
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28
llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
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@ -3288,7 +3288,7 @@ SDValue DAGCombiner::visitANY_EXTEND(SDNode *N) {
if (N0.getOpcode() == ISD::ANY_EXTEND || if (N0.getOpcode() == ISD::ANY_EXTEND ||
N0.getOpcode() == ISD::ZERO_EXTEND || N0.getOpcode() == ISD::ZERO_EXTEND ||
N0.getOpcode() == ISD::SIGN_EXTEND) N0.getOpcode() == ISD::SIGN_EXTEND)
return DAG.getNode(N0.getOpcode(), VT, N0.getOperand(0)); return DAG.getNode(N0.getOpcode(), N->getDebugLoc(), VT, N0.getOperand(0));
// fold (aext (truncate (load x))) -> (aext (smaller load x)) // fold (aext (truncate (load x))) -> (aext (smaller load x))
// fold (aext (truncate (srl (load x), c))) -> (aext (small load (x+c/n))) // fold (aext (truncate (srl (load x), c))) -> (aext (small load (x+c/n)))
@ -3297,7 +3297,7 @@ SDValue DAGCombiner::visitANY_EXTEND(SDNode *N) {
if (NarrowLoad.getNode()) { if (NarrowLoad.getNode()) {
if (NarrowLoad.getNode() != N0.getNode()) if (NarrowLoad.getNode() != N0.getNode())
CombineTo(N0.getNode(), NarrowLoad); CombineTo(N0.getNode(), NarrowLoad);
return DAG.getNode(ISD::ANY_EXTEND, VT, NarrowLoad); return DAG.getNode(ISD::ANY_EXTEND, N->getDebugLoc(), VT, NarrowLoad);
} }
} }
@ -3307,8 +3307,8 @@ SDValue DAGCombiner::visitANY_EXTEND(SDNode *N) {
if (TruncOp.getValueType() == VT) if (TruncOp.getValueType() == VT)
return TruncOp; // x iff x size == zext size. return TruncOp; // x iff x size == zext size.
if (TruncOp.getValueType().bitsGT(VT)) if (TruncOp.getValueType().bitsGT(VT))
return DAG.getNode(ISD::TRUNCATE, VT, TruncOp); return DAG.getNode(ISD::TRUNCATE, N->getDebugLoc(), VT, TruncOp);
return DAG.getNode(ISD::ANY_EXTEND, VT, TruncOp); return DAG.getNode(ISD::ANY_EXTEND, N->getDebugLoc(), VT, TruncOp);
} }
// fold (aext (and (trunc x), cst)) -> (and x, cst). // fold (aext (and (trunc x), cst)) -> (and x, cst).
@ -3317,13 +3317,14 @@ SDValue DAGCombiner::visitANY_EXTEND(SDNode *N) {
N0.getOperand(1).getOpcode() == ISD::Constant) { N0.getOperand(1).getOpcode() == ISD::Constant) {
SDValue X = N0.getOperand(0).getOperand(0); SDValue X = N0.getOperand(0).getOperand(0);
if (X.getValueType().bitsLT(VT)) { if (X.getValueType().bitsLT(VT)) {
X = DAG.getNode(ISD::ANY_EXTEND, VT, X); X = DAG.getNode(ISD::ANY_EXTEND, DebugLoc::getUnknownLoc(), VT, X);
} else if (X.getValueType().bitsGT(VT)) { } else if (X.getValueType().bitsGT(VT)) {
X = DAG.getNode(ISD::TRUNCATE, VT, X); X = DAG.getNode(ISD::TRUNCATE, DebugLoc::getUnknownLoc(), VT, X);
} }
APInt Mask = cast<ConstantSDNode>(N0.getOperand(1))->getAPIntValue(); APInt Mask = cast<ConstantSDNode>(N0.getOperand(1))->getAPIntValue();
Mask.zext(VT.getSizeInBits()); Mask.zext(VT.getSizeInBits());
return DAG.getNode(ISD::AND, VT, X, DAG.getConstant(Mask, VT)); return DAG.getNode(ISD::AND, N->getDebugLoc(), VT,
X, DAG.getConstant(Mask, VT));
} }
// fold (aext (load x)) -> (aext (truncate (extload x))) // fold (aext (load x)) -> (aext (truncate (extload x)))
@ -3331,7 +3332,8 @@ SDValue DAGCombiner::visitANY_EXTEND(SDNode *N) {
((!LegalOperations && !cast<LoadSDNode>(N0)->isVolatile()) || ((!LegalOperations && !cast<LoadSDNode>(N0)->isVolatile()) ||
TLI.isLoadExtLegal(ISD::EXTLOAD, N0.getValueType()))) { TLI.isLoadExtLegal(ISD::EXTLOAD, N0.getValueType()))) {
LoadSDNode *LN0 = cast<LoadSDNode>(N0); LoadSDNode *LN0 = cast<LoadSDNode>(N0);
SDValue ExtLoad = DAG.getExtLoad(ISD::EXTLOAD, VT, LN0->getChain(), SDValue ExtLoad = DAG.getExtLoad(ISD::EXTLOAD, N->getDebugLoc(), VT,
LN0->getChain(),
LN0->getBasePtr(), LN0->getSrcValue(), LN0->getBasePtr(), LN0->getSrcValue(),
LN0->getSrcValueOffset(), LN0->getSrcValueOffset(),
N0.getValueType(), N0.getValueType(),
@ -3342,7 +3344,8 @@ SDValue DAGCombiner::visitANY_EXTEND(SDNode *N) {
SDValue(ExtLoad.getNode(), 1)); SDValue(ExtLoad.getNode(), 1));
// If any node needs the original loaded value, recompute it. // If any node needs the original loaded value, recompute it.
if (!LN0->use_empty()) if (!LN0->use_empty())
CombineTo(LN0, DAG.getNode(ISD::TRUNCATE, N0.getValueType(), ExtLoad), CombineTo(LN0, DAG.getNode(ISD::TRUNCATE, N0.getDebugLoc(),
N0.getValueType(), ExtLoad),
ExtLoad.getValue(1)); ExtLoad.getValue(1));
return SDValue(N, 0); // Return N so it doesn't get rechecked! return SDValue(N, 0); // Return N so it doesn't get rechecked!
} }
@ -3355,14 +3358,15 @@ SDValue DAGCombiner::visitANY_EXTEND(SDNode *N) {
N0.hasOneUse()) { N0.hasOneUse()) {
LoadSDNode *LN0 = cast<LoadSDNode>(N0); LoadSDNode *LN0 = cast<LoadSDNode>(N0);
MVT EVT = LN0->getMemoryVT(); MVT EVT = LN0->getMemoryVT();
SDValue ExtLoad = DAG.getExtLoad(LN0->getExtensionType(), VT, SDValue ExtLoad = DAG.getExtLoad(LN0->getExtensionType(), N->getDebugLoc(),
LN0->getChain(), LN0->getBasePtr(), VT, LN0->getChain(), LN0->getBasePtr(),
LN0->getSrcValue(), LN0->getSrcValue(),
LN0->getSrcValueOffset(), EVT, LN0->getSrcValueOffset(), EVT,
LN0->isVolatile(), LN0->getAlignment()); LN0->isVolatile(), LN0->getAlignment());
CombineTo(N, ExtLoad); CombineTo(N, ExtLoad);
CombineTo(N0.getNode(), CombineTo(N0.getNode(),
DAG.getNode(ISD::TRUNCATE, N0.getValueType(), ExtLoad), DAG.getNode(ISD::TRUNCATE, N0.getDebugLoc(),
N0.getValueType(), ExtLoad),
ExtLoad.getValue(1)); ExtLoad.getValue(1));
return SDValue(N, 0); // Return N so it doesn't get rechecked! return SDValue(N, 0); // Return N so it doesn't get rechecked!
} }