misched: add DAG edges from vreg defs to ExitSU.

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

diff --git a/lib/VMCore/LLVMContext.cpp b/lib/VMCore/LLVMContext.cpp
index 0ed21fb754ed7435c1fda49ccce334d26f8fff4c..d77e996b5e454da57f7b510ff068f783dd81c5cd 100644 (file)
--- a/lib/VMCore/LLVMContext.cpp
+++ b/lib/VMCore/LLVMContext.cpp
@@ -17,9 +17,9 @@
 #include "llvm/Constants.h"
 #include "llvm/Instruction.h"
 #include "llvm/Support/ManagedStatic.h"
+#include "llvm/Support/SourceMgr.h"
 #include "LLVMContextImpl.h"
-#include <set>
-
+#include <cctype>
 using namespace llvm;
 
 static ManagedStatic<LLVMContext> GlobalContext;
@@ -28,42 +28,125 @@ LLVMContext& llvm::getGlobalContext() {
   return *GlobalContext;
 }
 
-LLVMContext::LLVMContext() : pImpl(new LLVMContextImpl(*this)) { }
+LLVMContext::LLVMContext() : pImpl(new LLVMContextImpl(*this)) {
+  // Create the fixed metadata kinds. This is done in the same order as the
+  // MD_* enum values so that they correspond.
+
+  // Create the 'dbg' metadata kind.
+  unsigned DbgID = getMDKindID("dbg");
+  assert(DbgID == MD_dbg && "dbg kind id drifted"); (void)DbgID;
+
+  // Create the 'tbaa' metadata kind.
+  unsigned TBAAID = getMDKindID("tbaa");
+  assert(TBAAID == MD_tbaa && "tbaa kind id drifted"); (void)TBAAID;
+
+  // Create the 'prof' metadata kind.
+  unsigned ProfID = getMDKindID("prof");
+  assert(ProfID == MD_prof && "prof kind id drifted"); (void)ProfID;
+
+  // Create the 'fpaccuracy' metadata kind.
+  unsigned FPAccuracyID = getMDKindID("fpaccuracy");
+  assert(FPAccuracyID == MD_fpaccuracy && "fpaccuracy kind id drifted");
+  (void)FPAccuracyID;
+}
 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];
+void LLVMContext::addModule(Module *M) {
+  pImpl->OwnedModules.insert(M);
+}
+
+void LLVMContext::removeModule(Module *M) {
+  pImpl->OwnedModules.erase(M);
+}
+
+//===----------------------------------------------------------------------===//
+// Recoverable Backend Errors
+//===----------------------------------------------------------------------===//
+
+void LLVMContext::
+setInlineAsmDiagnosticHandler(InlineAsmDiagHandlerTy DiagHandler,
+                              void *DiagContext) {
+  pImpl->InlineAsmDiagHandler = DiagHandler;
+  pImpl->InlineAsmDiagContext = DiagContext;
+}
+
+/// getInlineAsmDiagnosticHandler - Return the diagnostic handler set by
+/// setInlineAsmDiagnosticHandler.
+LLVMContext::InlineAsmDiagHandlerTy
+LLVMContext::getInlineAsmDiagnosticHandler() const {
+  return pImpl->InlineAsmDiagHandler;
+}
+
+/// getInlineAsmDiagnosticContext - Return the diagnostic context set by
+/// setInlineAsmDiagnosticHandler.
+void *LLVMContext::getInlineAsmDiagnosticContext() const {
+  return pImpl->InlineAsmDiagContext;
+}
+
+void LLVMContext::emitError(const Twine &ErrorStr) {
+  emitError(0U, ErrorStr);
 }
 
-bool LLVMContext::RemoveDeadMetadata() {
-  std::vector<const MDNode *> DeadMDNodes;
-  bool Changed = false;
-  while (1) {
-
-    for (FoldingSet<MDNode>::iterator 
-           I = pImpl->MDNodeSet.begin(),
-           E = pImpl->MDNodeSet.end(); I != E; ++I) {
-      const MDNode *N = &(*I);
-      if (N->use_empty()) 
-        DeadMDNodes.push_back(N);
-    }
-    
-    if (DeadMDNodes.empty())
-      return Changed;
-
-    while (!DeadMDNodes.empty()) {
-      const MDNode *N = DeadMDNodes.back(); DeadMDNodes.pop_back();
-      delete N;
-    }
+void LLVMContext::emitError(const Instruction *I, const Twine &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 Changed;
+  return emitError(LocCookie, ErrorStr);
+}
+
+void LLVMContext::emitError(unsigned LocCookie, const Twine &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("", SourceMgr::DK_Error, ErrorStr.str());
+
+  pImpl->InlineAsmDiagHandler(Diag, pImpl->InlineAsmDiagContext, LocCookie);
+}
+
+//===----------------------------------------------------------------------===//
+// Metadata Kind Uniquing
+//===----------------------------------------------------------------------===//
+
+#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 (!std::isalpha(MDName[0]))
+    return false;
+
+  for (StringRef::iterator I = MDName.begin() + 1, E = MDName.end(); I != E;
+       ++I) {
+    if (!std::isalnum(*I) && *I != '_' && *I != '-' && *I != '.')
+      return false;
+  }
+  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");
+
+  // If this is new, assign it its ID.
+  return
+    pImpl->CustomMDKindNames.GetOrCreateValue(
+      Name, pImpl->CustomMDKindNames.size()).second;
+}
+
+/// getHandlerNames - Populate client supplied smallvector using custome
+/// metadata name and ID.
+void LLVMContext::getMDKindNames(SmallVectorImpl<StringRef> &Names) const {
+  Names.resize(pImpl->CustomMDKindNames.size());
+  for (StringMap<unsigned>::const_iterator I = pImpl->CustomMDKindNames.begin(),
+       E = pImpl->CustomMDKindNames.end(); I != E; ++I)
+    Names[I->second] = I->first();
 }