use ArgOperand API and CallSite for arg range

[oota-llvm.git] / lib / VMCore / LLVMContext.cpp

diff --git a/lib/VMCore/LLVMContext.cpp b/lib/VMCore/LLVMContext.cpp
index 03f04366a44b8014544f8701a00ee106d374445f..4d61363b9394d0cbafca018028ad1c353c517557 100644 (file)
--- a/lib/VMCore/LLVMContext.cpp
+++ b/lib/VMCore/LLVMContext.cpp
@@ -17,10 +17,8 @@
 #include "llvm/Constants.h"
 #include "llvm/Instruction.h"
 #include "llvm/Support/ManagedStatic.h"
-#include "llvm/Support/ValueHandle.h"
+#include "llvm/Support/SourceMgr.h"
 #include "LLVMContextImpl.h"
-#include <set>
-
 using namespace llvm;
 
 static ManagedStatic<LLVMContext> GlobalContext;
@@ -29,48 +27,104 @@ LLVMContext& llvm::getGlobalContext() {
   return *GlobalContext;
 }
 
-LLVMContext::LLVMContext() : pImpl(new LLVMContextImpl(*this)) { }
+LLVMContext::LLVMContext() : pImpl(new LLVMContextImpl(*this)) {
+  // Create the first metadata kind, which is always 'dbg'.
+  unsigned DbgID = getMDKindID("dbg");
+  assert(DbgID == MD_dbg && "dbg kind id drifted"); (void)DbgID;
+}
 LLVMContext::~LLVMContext() { delete pImpl; }
 
-GetElementPtrConstantExpr::GetElementPtrConstantExpr
-  (Constant *C,
-   const std::vector<Constant*> &IdxList,
-   const Type *DestTy)
-    : ConstantExpr(DestTy, Instruction::GetElementPtr,
-                   OperandTraits<GetElementPtrConstantExpr>::op_end(this)
-                   - (IdxList.size()+1),
-                   IdxList.size()+1) {
-  OperandList[0] = C;
-  for (unsigned i = 0, E = IdxList.size(); i != E; ++i)
-    OperandList[i+1] = IdxList[i];
+//===----------------------------------------------------------------------===//
+// Recoverable Backend Errors
+//===----------------------------------------------------------------------===//
+
+void LLVMContext::setInlineAsmDiagnosticHandler(void *DiagHandler, 
+                                                void *DiagContext) {
+  pImpl->InlineAsmDiagHandler = DiagHandler;
+  pImpl->InlineAsmDiagContext = DiagContext;
+}
+
+/// getInlineAsmDiagnosticHandler - Return the diagnostic handler set by
+/// setInlineAsmDiagnosticHandler.
+void *LLVMContext::getInlineAsmDiagnosticHandler() const {
+  return pImpl->InlineAsmDiagHandler;
+}
+
+/// getInlineAsmDiagnosticContext - Return the diagnostic context set by
+/// setInlineAsmDiagnosticHandler.
+void *LLVMContext::getInlineAsmDiagnosticContext() const {
+  return pImpl->InlineAsmDiagContext;
+}
+
+void LLVMContext::emitError(StringRef ErrorStr) {
+  emitError(0U, ErrorStr);
 }
 
-bool LLVMContext::RemoveDeadMetadata() {
-  std::vector<WeakVH> DeadMDNodes;
-  bool Changed = false;
-  while (1) {
+void LLVMContext::emitError(const Instruction *I, StringRef ErrorStr) {
+  unsigned LocCookie = 0;
+  if (const MDNode *SrcLoc = I->getMetadata("srcloc")) {
+    if (SrcLoc->getNumOperands() != 0)
+      if (const ConstantInt *CI = dyn_cast<ConstantInt>(SrcLoc->getOperand(0)))
+        LocCookie = CI->getZExtValue();
+  }
+  return emitError(LocCookie, ErrorStr);
+}
+
+void LLVMContext::emitError(unsigned LocCookie, StringRef ErrorStr) {
+  // If there is no error handler installed, just print the error and exit.
+  if (pImpl->InlineAsmDiagHandler == 0) {
+    errs() << "error: " << ErrorStr << "\n";
+    exit(1);
+  }
+  
+  // If we do have an error handler, we can report the error and keep going.
+  SMDiagnostic Diag("", "error: " + ErrorStr.str());
+  
+  ((SourceMgr::DiagHandlerTy)(intptr_t)pImpl->InlineAsmDiagHandler)
+      (Diag, pImpl->InlineAsmDiagContext, LocCookie);
+  
+}
 
-    for (FoldingSet<MDNode>::iterator 
-           I = pImpl->MDNodeSet.begin(),
-           E = pImpl->MDNodeSet.end(); I != E; ++I) {
-      MDNode *N = &(*I);
-      if (N->use_empty()) 
-        DeadMDNodes.push_back(WeakVH(N));
-    }
-    
-    if (DeadMDNodes.empty())
-      return Changed;
+//===----------------------------------------------------------------------===//
+// Metadata Kind Uniquing
+//===----------------------------------------------------------------------===//
 
-    while (!DeadMDNodes.empty()) {
-      Value *V = DeadMDNodes.back(); DeadMDNodes.pop_back();
-      if (const MDNode *N = dyn_cast_or_null<MDNode>(V))
-        if (N->use_empty())
-          delete N;
-    }
+#ifndef NDEBUG
+/// isValidName - Return true if Name is a valid custom metadata handler name.
+static bool isValidName(StringRef MDName) {
+  if (MDName.empty())
+    return false;
+  
+  if (!isalpha(MDName[0]))
+    return false;
+  
+  for (StringRef::iterator I = MDName.begin() + 1, E = MDName.end(); I != E;
+       ++I) {
+    if (!isalnum(*I) && *I != '_' && *I != '-' && *I != '.')
+      return false;
   }
-  return Changed;
+  return true;
+}
+#endif
+
+/// getMDKindID - Return a unique non-zero ID for the specified metadata kind.
+unsigned LLVMContext::getMDKindID(StringRef Name) const {
+  assert(isValidName(Name) && "Invalid MDNode name");
+  
+  unsigned &Entry = pImpl->CustomMDKindNames[Name];
+  
+  // If this is new, assign it its ID.
+  if (Entry == 0) Entry = pImpl->CustomMDKindNames.size();
+  return Entry;
 }
 
-Metadata &LLVMContext::getMetadata() {
-  return pImpl->TheMetadata;
+/// getHandlerNames - Populate client supplied smallvector using custome
+/// metadata name and ID.
+void LLVMContext::getMDKindNames(SmallVectorImpl<StringRef> &Names) const {
+  Names.resize(pImpl->CustomMDKindNames.size()+1);
+  Names[0] = "";
+  for (StringMap<unsigned>::const_iterator I = pImpl->CustomMDKindNames.begin(),
+       E = pImpl->CustomMDKindNames.end(); I != E; ++I)
+    // MD Handlers are numbered from 1.
+    Names[I->second] = I->first();
 }