MC: Add dyn_cast support to MCSection.

[oota-llvm.git] / include / llvm / LLVMContext.h

diff --git a/include/llvm/LLVMContext.h b/include/llvm/LLVMContext.h
index 42b4ea69b93416380f01d0258f3a159a96a50245..afae08b07dafd44262037500c993f24570b35c99 100644 (file)
--- a/include/llvm/LLVMContext.h
+++ b/include/llvm/LLVMContext.h
@@ -18,7 +18,10 @@
 namespace llvm {
 
 class LLVMContextImpl;
-class MetadataContext;
+class StringRef;
+class Instruction;
+template <typename T> class SmallVectorImpl;
+
 /// This is an important class for using LLVM in a threaded context.  It
 /// (opaquely) owns and manages the core "global" data of LLVM's core 
 /// infrastructure, including the type and constant uniquing tables.
@@ -28,16 +31,58 @@ class LLVMContext {
   // DO NOT IMPLEMENT
   LLVMContext(LLVMContext&);
   void operator=(LLVMContext&);
+
 public:
-  LLVMContextImpl* pImpl;
-  MetadataContext &getMetadata();
-  bool RemoveDeadMetadata();
+  LLVMContextImpl *const pImpl;
   LLVMContext();
   ~LLVMContext();
+  
+  // Pinned metadata names, which always have the same value.  This is a
+  // compile-time performance optimization, not a correctness optimization.
+  enum {
+    MD_dbg = 1   // "dbg" -> 1.
+  };
+  
+  /// getMDKindID - Return a unique non-zero ID for the specified metadata kind.
+  /// This ID is uniqued across modules in the current LLVMContext.
+  unsigned getMDKindID(StringRef Name) const;
+  
+  /// getMDKindNames - Populate client supplied SmallVector with the name for
+  /// custom metadata IDs registered in this LLVMContext.   ID #0 is not used,
+  /// so it is filled in as an empty string.
+  void getMDKindNames(SmallVectorImpl<StringRef> &Result) const;
+  
+  /// setInlineAsmDiagnosticHandler - This method sets a handler that is invoked
+  /// when problems with inline asm are detected by the backend.  The first
+  /// argument is a function pointer (of type SourceMgr::DiagHandlerTy) and the
+  /// second is a context pointer that gets passed into the DiagHandler.
+  ///
+  /// LLVMContext doesn't take ownership or interpreter either of these
+  /// pointers.
+  void setInlineAsmDiagnosticHandler(void *DiagHandler, void *DiagContext = 0);
+
+  /// getInlineAsmDiagnosticHandler - Return the diagnostic handler set by
+  /// setInlineAsmDiagnosticHandler.
+  void *getInlineAsmDiagnosticHandler() const;
+
+  /// getInlineAsmDiagnosticContext - Return the diagnostic context set by
+  /// setInlineAsmDiagnosticHandler.
+  void *getInlineAsmDiagnosticContext() const;
+  
+  
+  /// emitError - Emit an error message to the currently installed error handler
+  /// with optional location information.  This function returns, so code should
+  /// be prepared to drop the erroneous construct on the floor and "not crash".
+  /// The generated code need not be correct.  The error message will be
+  /// implicitly prefixed with "error: " and should not end with a ".".
+  void emitError(unsigned LocCookie, StringRef ErrorStr);
+  void emitError(const Instruction *I, StringRef ErrorStr);
+  void emitError(StringRef ErrorStr);
 };
 
-/// FOR BACKWARDS COMPATIBILITY - Returns a global context.
-extern LLVMContext& getGlobalContext();
+/// getGlobalContext - Returns a global context.  This is for LLVM clients that
+/// only care about operating on a single thread.
+extern LLVMContext &getGlobalContext();
 
 }