1 //===-- LLVMContext.cpp - Implement LLVMContext -----------------------===//
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 LLVMContext, as a wrapper around the opaque
11 // class LLVMContextImpl.
13 //===----------------------------------------------------------------------===//
15 #include "llvm/LLVMContext.h"
16 #include "llvm/Metadata.h"
17 #include "llvm/Constants.h"
18 #include "llvm/Instruction.h"
19 #include "llvm/Support/ManagedStatic.h"
20 #include "llvm/Support/ValueHandle.h"
21 #include "LLVMContextImpl.h"
26 static ManagedStatic<LLVMContext> GlobalContext;
28 LLVMContext& llvm::getGlobalContext() {
29 return *GlobalContext;
32 LLVMContext::LLVMContext() : pImpl(new LLVMContextImpl(*this)) { }
33 LLVMContext::~LLVMContext() { delete pImpl; }
35 GetElementPtrConstantExpr::GetElementPtrConstantExpr
37 const std::vector<Constant*> &IdxList,
39 : ConstantExpr(DestTy, Instruction::GetElementPtr,
40 OperandTraits<GetElementPtrConstantExpr>::op_end(this)
44 for (unsigned i = 0, E = IdxList.size(); i != E; ++i)
45 OperandList[i+1] = IdxList[i];
48 bool LLVMContext::RemoveDeadMetadata() {
49 std::vector<WeakVH> DeadMDNodes;
53 for (FoldingSet<MDNode>::iterator
54 I = pImpl->MDNodeSet.begin(),
55 E = pImpl->MDNodeSet.end(); I != E; ++I) {
58 DeadMDNodes.push_back(WeakVH(N));
61 if (DeadMDNodes.empty())
64 while (!DeadMDNodes.empty()) {
65 Value *V = DeadMDNodes.back(); DeadMDNodes.pop_back();
66 if (const MDNode *N = dyn_cast_or_null<MDNode>(V))
74 MetadataContext &LLVMContext::getMetadata() {
75 return pImpl->TheMetadata;