1 //===-- Metadata.cpp - Implement Metadata classes -------------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file implements the Metadata classes.
12 //===----------------------------------------------------------------------===//
14 #include "llvm/Metadata.h"
17 //===----------------------------------------------------------------------===//
18 //MDNode implementation
20 MDNode::MDNode(Value*const* Vals, unsigned NumVals)
21 : MetadataBase(Type::MetadataTy, Value::MDNodeVal) {
22 for (unsigned i = 0; i != NumVals; ++i)
23 Node.push_back(WeakVH(Vals[i]));
26 void MDNode::Profile(FoldingSetNodeID &ID) const {
27 for (const_elem_iterator I = elem_begin(), E = elem_end(); I != E; ++I)
31 void MDNode::replaceElement(Value *From, Value *To) {
32 SmallVector<Value*, 4> Values;
33 Values.reserve(getNumElements()); // Build replacement array...
34 for (unsigned i = 0, e = getNumElements(); i != e; ++i) {
35 Value *Val = getElement(i);
36 if (Val == From) Val = To;
37 Values.push_back(Val);
41 getType()->getContext().getMDNode(&Values[0], Values.size());
42 assert(Replacement != this && "I didn't contain From!");
44 uncheckedReplaceAllUsesWith(Replacement);