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+//===-- llvm/SymbolTableListTraitsImpl.h - Implementation ------*- C++ -*--===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements the stickier parts of the SymbolTableListTraits class,
+// and is explicitly instantiated where needed to avoid defining all this code
+// in a widely used header.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_SYMBOLTABLELISTTRAITS_IMPL_H
+#define LLVM_SYMBOLTABLELISTTRAITS_IMPL_H
+
+#include "llvm/IR/SymbolTableListTraits.h"
+#include "llvm/IR/ValueSymbolTable.h"
+
+namespace llvm {
+
+/// setSymTabObject - This is called when (f.e.) the parent of a basic block
+/// changes. This requires us to remove all the instruction symtab entries from
+/// the current function and reinsert them into the new function.
+template<typename ValueSubClass, typename ItemParentClass>
+template<typename TPtr>
+void SymbolTableListTraits<ValueSubClass,ItemParentClass>
+::setSymTabObject(TPtr *Dest, TPtr Src) {
+ // Get the old symtab and value list before doing the assignment.
+ ValueSymbolTable *OldST = TraitsClass::getSymTab(getListOwner());
+
+ // Do it.
+ *Dest = Src;
+
+ // Get the new SymTab object.
+ ValueSymbolTable *NewST = TraitsClass::getSymTab(getListOwner());
+
+ // If there is nothing to do, quick exit.
+ if (OldST == NewST) return;
+
+ // Move all the elements from the old symtab to the new one.
+ iplist<ValueSubClass> &ItemList = TraitsClass::getList(getListOwner());
+ if (ItemList.empty()) return;
+
+ if (OldST) {
+ // Remove all entries from the previous symtab.
+ for (typename iplist<ValueSubClass>::iterator I = ItemList.begin();
+ I != ItemList.end(); ++I)
+ if (I->hasName())
+ OldST->removeValueName(I->getValueName());
+ }
+
+ if (NewST) {
+ // Add all of the items to the new symtab.
+ for (typename iplist<ValueSubClass>::iterator I = ItemList.begin();
+ I != ItemList.end(); ++I)
+ if (I->hasName())
+ NewST->reinsertValue(I);
+ }
+
+}
+
+template<typename ValueSubClass, typename ItemParentClass>
+void SymbolTableListTraits<ValueSubClass,ItemParentClass>
+::addNodeToList(ValueSubClass *V) {
+ assert(V->getParent() == 0 && "Value already in a container!!");
+ ItemParentClass *Owner = getListOwner();
+ V->setParent(Owner);
+ if (V->hasName())
+ if (ValueSymbolTable *ST = TraitsClass::getSymTab(Owner))
+ ST->reinsertValue(V);
+}
+
+template<typename ValueSubClass, typename ItemParentClass>
+void SymbolTableListTraits<ValueSubClass,ItemParentClass>
+::removeNodeFromList(ValueSubClass *V) {
+ V->setParent(0);
+ if (V->hasName())
+ if (ValueSymbolTable *ST = TraitsClass::getSymTab(getListOwner()))
+ ST->removeValueName(V->getValueName());
+}
+
+template<typename ValueSubClass, typename ItemParentClass>
+void SymbolTableListTraits<ValueSubClass,ItemParentClass>
+::transferNodesFromList(ilist_traits<ValueSubClass> &L2,
+ ilist_iterator<ValueSubClass> first,
+ ilist_iterator<ValueSubClass> last) {
+ // We only have to do work here if transferring instructions between BBs
+ ItemParentClass *NewIP = getListOwner(), *OldIP = L2.getListOwner();
+ if (NewIP == OldIP) return; // No work to do at all...
+
+ // We only have to update symbol table entries if we are transferring the
+ // instructions to a different symtab object...
+ ValueSymbolTable *NewST = TraitsClass::getSymTab(NewIP);
+ ValueSymbolTable *OldST = TraitsClass::getSymTab(OldIP);
+ if (NewST != OldST) {
+ for (; first != last; ++first) {
+ ValueSubClass &V = *first;
+ bool HasName = V.hasName();
+ if (OldST && HasName)
+ OldST->removeValueName(V.getValueName());
+ V.setParent(NewIP);
+ if (NewST && HasName)
+ NewST->reinsertValue(&V);
+ }
+ } else {
+ // Just transferring between blocks in the same function, simply update the
+ // parent fields in the instructions...
+ for (; first != last; ++first)
+ first->setParent(NewIP);
+ }
+}
+
+} // End llvm namespace
+
+#endif