diff options
Diffstat (limited to 'lib/CodeGen/SelectionDAG/SelectionDAG.cpp')
| -rw-r--r-- | lib/CodeGen/SelectionDAG/SelectionDAG.cpp | 21 |
1 files changed, 18 insertions, 3 deletions
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp index a8cd865c61..8c08378cfd 100644 --- a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp +++ b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp @@ -2177,7 +2177,7 @@ MVT::ValueType *SDNode::getValueTypeList(MVT::ValueType VT) { /// hasNUsesOfValue - Return true if there are exactly NUSES uses of the /// indicated value. This method ignores uses of other values defined by this /// operation. -bool SDNode::hasNUsesOfValue(unsigned NUses, unsigned Value) { +bool SDNode::hasNUsesOfValue(unsigned NUses, unsigned Value) const { assert(Value < getNumValues() && "Bad value!"); // If there is only one value, this is easy. @@ -2185,11 +2185,11 @@ bool SDNode::hasNUsesOfValue(unsigned NUses, unsigned Value) { return use_size() == NUses; if (Uses.size() < NUses) return false; - SDOperand TheValue(this, Value); + SDOperand TheValue(const_cast<SDNode *>(this), Value); std::set<SDNode*> UsersHandled; - for (std::vector<SDNode*>::iterator UI = Uses.begin(), E = Uses.end(); + for (std::vector<SDNode*>::const_iterator UI = Uses.begin(), E = Uses.end(); UI != E; ++UI) { SDNode *User = *UI; if (User->getNumOperands() == 1 || @@ -2207,6 +2207,21 @@ bool SDNode::hasNUsesOfValue(unsigned NUses, unsigned Value) { } +// isOnlyUse - Return true if this node is the only use of N. +bool SDNode::isOnlyUse(SDNode *N) const { + bool Seen = false; + for (SDNode::use_iterator I = N->use_begin(), E = N->use_end(); I != E; ++I) { + SDNode *User = *I; + if (User == this) + Seen = true; + else + return false; + } + + return Seen; +} + + const char *SDNode::getOperationName(const SelectionDAG *G) const { switch (getOpcode()) { default: |