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/SourceMgr.h"
21 #include "LLVMContextImpl.h"
25 static ManagedStatic<LLVMContext> GlobalContext;
27 LLVMContext& llvm::getGlobalContext() {
28 return *GlobalContext;
31 LLVMContext::LLVMContext() : pImpl(new LLVMContextImpl(*this)) {
32 // Create the fixed metadata kinds. This is done in the same order as the
33 // MD_* enum values so that they correspond.
35 // Create the 'dbg' metadata kind.
36 unsigned DbgID = getMDKindID("dbg");
37 assert(DbgID == MD_dbg && "dbg kind id drifted"); (void)DbgID;
39 // Create the 'tbaa' metadata kind.
40 unsigned TBAAID = getMDKindID("tbaa");
41 assert(TBAAID == MD_tbaa && "tbaa kind id drifted"); (void)TBAAID;
43 // Create the 'prof' metadata kind.
44 unsigned ProfID = getMDKindID("prof");
45 assert(ProfID == MD_prof && "prof kind id drifted"); (void)ProfID;
47 // Create the 'fpaccuracy' metadata kind.
48 unsigned FPAccuracyID = getMDKindID("fpaccuracy");
49 assert(FPAccuracyID == MD_fpaccuracy && "fpaccuracy kind id drifted");
52 LLVMContext::~LLVMContext() { delete pImpl; }
54 void LLVMContext::addModule(Module *M) {
55 pImpl->OwnedModules.insert(M);
58 void LLVMContext::removeModule(Module *M) {
59 pImpl->OwnedModules.erase(M);
62 //===----------------------------------------------------------------------===//
63 // Recoverable Backend Errors
64 //===----------------------------------------------------------------------===//
67 setInlineAsmDiagnosticHandler(InlineAsmDiagHandlerTy DiagHandler,
69 pImpl->InlineAsmDiagHandler = DiagHandler;
70 pImpl->InlineAsmDiagContext = DiagContext;
73 /// getInlineAsmDiagnosticHandler - Return the diagnostic handler set by
74 /// setInlineAsmDiagnosticHandler.
75 LLVMContext::InlineAsmDiagHandlerTy
76 LLVMContext::getInlineAsmDiagnosticHandler() const {
77 return pImpl->InlineAsmDiagHandler;
80 /// getInlineAsmDiagnosticContext - Return the diagnostic context set by
81 /// setInlineAsmDiagnosticHandler.
82 void *LLVMContext::getInlineAsmDiagnosticContext() const {
83 return pImpl->InlineAsmDiagContext;
86 void LLVMContext::emitError(const Twine &ErrorStr) {
87 emitError(0U, ErrorStr);
90 void LLVMContext::emitError(const Instruction *I, const Twine &ErrorStr) {
91 unsigned LocCookie = 0;
92 if (const MDNode *SrcLoc = I->getMetadata("srcloc")) {
93 if (SrcLoc->getNumOperands() != 0)
94 if (const ConstantInt *CI = dyn_cast<ConstantInt>(SrcLoc->getOperand(0)))
95 LocCookie = CI->getZExtValue();
97 return emitError(LocCookie, ErrorStr);
100 void LLVMContext::emitError(unsigned LocCookie, const Twine &ErrorStr) {
101 // If there is no error handler installed, just print the error and exit.
102 if (pImpl->InlineAsmDiagHandler == 0) {
103 errs() << "error: " << ErrorStr << "\n";
107 // If we do have an error handler, we can report the error and keep going.
108 SMDiagnostic Diag("", SourceMgr::DK_Error, ErrorStr.str());
110 pImpl->InlineAsmDiagHandler(Diag, pImpl->InlineAsmDiagContext, LocCookie);
113 //===----------------------------------------------------------------------===//
114 // Metadata Kind Uniquing
115 //===----------------------------------------------------------------------===//
118 /// isValidName - Return true if Name is a valid custom metadata handler name.
119 static bool isValidName(StringRef MDName) {
123 if (!std::isalpha(MDName[0]))
126 for (StringRef::iterator I = MDName.begin() + 1, E = MDName.end(); I != E;
128 if (!std::isalnum(*I) && *I != '_' && *I != '-' && *I != '.')
135 /// getMDKindID - Return a unique non-zero ID for the specified metadata kind.
136 unsigned LLVMContext::getMDKindID(StringRef Name) const {
137 assert(isValidName(Name) && "Invalid MDNode name");
139 // If this is new, assign it its ID.
141 pImpl->CustomMDKindNames.GetOrCreateValue(
142 Name, pImpl->CustomMDKindNames.size()).second;
145 /// getHandlerNames - Populate client supplied smallvector using custome
146 /// metadata name and ID.
147 void LLVMContext::getMDKindNames(SmallVectorImpl<StringRef> &Names) const {
148 Names.resize(pImpl->CustomMDKindNames.size());
149 for (StringMap<unsigned>::const_iterator I = pImpl->CustomMDKindNames.begin(),
150 E = pImpl->CustomMDKindNames.end(); I != E; ++I)
151 Names[I->second] = I->first();