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Wrong size for load

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30610 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jim Laskey 2006-09-26 08:14:06 +00:00
parent 172585b3aa
commit 3dd1170616
1 changed files with 8 additions and 2 deletions
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10
lib/CodeGen/SelectionDAG/DAGCombiner.cpp
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@ -2644,6 +2644,8 @@ SDOperand DAGCombiner::visitLOAD(SDNode *N) {
Chain.getOperand(1).getValueType() == N->getValueType(0)) Chain.getOperand(1).getValueType() == N->getValueType(0))
return CombineTo(N, Chain.getOperand(1), Chain); return CombineTo(N, Chain.getOperand(1), Chain);
// We can only move the load if it has a user of it's chain result. Otherwise
// there is no place to attach it's old chain.
if (CombinerAA && hasChainUsers(N)) { if (CombinerAA && hasChainUsers(N)) {
// Walk up chain skipping non-aliasing memory nodes. // Walk up chain skipping non-aliasing memory nodes.
SDOperand BetterChain = FindBetterChain(N, Chain); SDOperand BetterChain = FindBetterChain(N, Chain);
@ -3956,15 +3958,19 @@ SDOperand DAGCombiner::BuildUDIV(SDNode *N) {
bool DAGCombiner::hasChainUsers(SDNode *Load) { bool DAGCombiner::hasChainUsers(SDNode *Load) {
// Don't even bother if the load only has one user (conservatively the value.) // Don't even bother if the load only has one user (conservatively the value.)
if (!Load->hasOneUse()) { if (!Load->hasOneUse()) {
SDOperand Chain(Load, 1); SDOperand Chain(Load, 1); // The load's chain result.
// For each user of the load.
for (SDNode::use_iterator UI = Load->use_begin(), UE = Load->use_end(); for (SDNode::use_iterator UI = Load->use_begin(), UE = Load->use_end();
UI != UE; ++UI) { UI != UE; ++UI) {
// Chain will be the first operand.
if ((*UI)->getOperand(0) == Chain) if ((*UI)->getOperand(0) == Chain)
return true; return true;
} }
} }
// No luck.
return false; return false;
} }
@ -4025,7 +4031,7 @@ void DAGCombiner::FindAliasInfo(SDNode *N,
switch (N->getOpcode()) { switch (N->getOpcode()) {
case ISD::LOAD: case ISD::LOAD:
Ptr = N->getOperand(1); Ptr = N->getOperand(1);
Size = MVT::getSizeInBits(N->getOperand(1).getValueType()) >> 3; Size = MVT::getSizeInBits(N->getValueType(0)) >> 3;
SrcValue = N->getOperand(2); SrcValue = N->getOperand(2);
break; break;
case ISD::STORE: case ISD::STORE: