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hasAnyUseOfValue can check SDUse nodes of its users directly instead

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of examining every operand of every user.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53374 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman 2008-07-09 22:39:01 +00:00
parent 1ea58a52a4
commit 1373c1c395
1 changed files with 3 additions and 13 deletions
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16
lib/CodeGen/SelectionDAG/SelectionDAG.cpp
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@ -4401,8 +4401,6 @@ bool SDNode::hasNUsesOfValue(unsigned NUses, unsigned Value) const {
SDOperand TheValue(const_cast<SDNode *>(this), Value);
SmallPtrSet<SDNode*, 32> UsersHandled;
// TODO: Only iterate over uses of a given value of the node
for (SDNode::use_iterator UI = use_begin(), E = use_end(); UI != E; ++UI) {
if (*UI == TheValue) {
@ -4426,17 +4424,9 @@ bool SDNode::hasAnyUseOfValue(unsigned Value) const {
SDOperand TheValue(const_cast<SDNode *>(this), Value);
SmallPtrSet<SDNode*, 32> UsersHandled;
for (SDNode::use_iterator UI = use_begin(), E = use_end(); UI != E; ++UI) {
SDNode *User = UI->getUser();
if (User->getNumOperands() == 1 ||
UsersHandled.insert(User)) // First time we've seen this?
for (unsigned i = 0, e = User->getNumOperands(); i != e; ++i)
if (User->getOperand(i) == TheValue) {
return true;
}
}
for (SDNode::use_iterator UI = use_begin(), E = use_end(); UI != E; ++UI)
if (UI->getSDOperand() == TheValue)
return true;
return false;
}