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Chain can be any operand

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llvm-svn: 30611
This commit is contained in:
Jim Laskey 2006-09-26 09:32:41 +00:00
parent ae81857cba
commit 2a8d8270eb
1 changed files with 9 additions and 11 deletions
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8
lib/CodeGen/SelectionDAG/DAGCombiner.cpp
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@ -3956,17 +3956,15 @@ SDOperand DAGCombiner::BuildUDIV(SDNode *N) {
/// hasChainUsers - Returns true if one of the users of a load node has the /// hasChainUsers - Returns true if one of the users of a load node has the
/// chain result as an operand. /// chain result as an operand.
bool DAGCombiner::hasChainUsers(SDNode *Load) { bool DAGCombiner::hasChainUsers(SDNode *Load) {
// Don't even bother if the load only has one user (conservatively the value.)
if (!Load->hasOneUse()) {
SDOperand Chain(Load, 1); // The load's chain result. SDOperand Chain(Load, 1); // The load's chain result.
// For each user of the load. // 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) {
const SDNode *User = *UI;
// Chain will be the first operand. for (unsigned i = 0, e = User->getNumOperands(); i != e; ++i) {
if ((*UI)->getOperand(0) == Chain) if (User->getOperand(i) == Chain) return true;
return true;
} }
} }