SCEV: Add MarkPendingLoopPredicates to avoid recursive isImpliedCond.

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

diff --git a/include/llvm/LLVMContext.h b/include/llvm/LLVMContext.h
index 91312f73a8a60b74115ff6c801a118de8fac4067..a8306a9e7617cf848b032647d1655ed6b333ab47 100644 (file)
--- a/include/llvm/LLVMContext.h
+++ b/include/llvm/LLVMContext.h
@@ -15,37 +15,15 @@
 #ifndef LLVM_LLVMCONTEXT_H
 #define LLVM_LLVMCONTEXT_H
 
-#include "llvm/Support/DataTypes.h"
-#include <vector>
-#include <string>
-
 namespace llvm {
 
-class APFloat;
-class APInt;
-class ArrayType;
-class Constant;
-class ConstantAggregateZero;
-class ConstantArray;
-class ConstantFP;
-class ConstantInt;
-class ConstantPointerNull;
-class ConstantStruct;
-class ConstantVector;
-class FunctionType;
-class IntegerType;
 class LLVMContextImpl;
-class MDNode;
-class MDString;
-class OpaqueType;
-class PointerType;
 class StringRef;
-class StructType;
-class Type;
-class UndefValue;
-class Use;
-class Value;
-class VectorType;
+class Twine;
+class Instruction;
+class Module;
+class SMDiagnostic;
+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 
@@ -53,40 +31,80 @@ class VectorType;
 /// LLVMContext itself provides no locking guarantees, so you should be careful
 /// to have one context per thread.
 class LLVMContext {
-  LLVMContextImpl* pImpl;
-  
-  friend class ConstantInt;
-  friend class ConstantFP;
-  friend class ConstantStruct;
-  friend class ConstantArray;
-  friend class ConstantVector;
-  friend class ConstantAggregateZero;
 public:
+  LLVMContextImpl *const pImpl;
   LLVMContext();
   ~LLVMContext();
   
-  // Constant accessors
-  Constant* getNullValue(const Type* Ty);
+  // Pinned metadata names, which always have the same value.  This is a
+  // compile-time performance optimization, not a correctness optimization.
+  enum {
+    MD_dbg = 0,  // "dbg"
+    MD_tbaa = 1, // "tbaa"
+    MD_prof = 2,  // "prof"
+    MD_fpmath = 3,  // "fpmath"
+    MD_range = 4 // "range"
+  };
+  
+  /// 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.
+  void getMDKindNames(SmallVectorImpl<StringRef> &Result) const;
+  
   
-  /// @returns the value for an integer constant of the given type that has all
-  /// its bits set to true.
-  /// @brief Get the all ones value
-  Constant* getAllOnesValue(const Type* Ty);
+  typedef void (*InlineAsmDiagHandlerTy)(const SMDiagnostic&, void *Context,
+                                         unsigned LocCookie);
+  
+  /// 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 and the second is a context pointer that
+  /// gets passed into the DiagHandler.
+  ///
+  /// LLVMContext doesn't take ownership or interpret either of these
+  /// pointers.
+  void setInlineAsmDiagnosticHandler(InlineAsmDiagHandlerTy DiagHandler,
+                                     void *DiagContext = 0);
+
+  /// getInlineAsmDiagnosticHandler - Return the diagnostic handler set by
+  /// setInlineAsmDiagnosticHandler.
+  InlineAsmDiagHandlerTy getInlineAsmDiagnosticHandler() const;
+
+  /// getInlineAsmDiagnosticContext - Return the diagnostic context set by
+  /// setInlineAsmDiagnosticHandler.
+  void *getInlineAsmDiagnosticContext() const;
   
-  // MDNode accessors
-  MDNode* getMDNode(Value* const* Vals, unsigned NumVals);
   
-  // MDString accessors
-  MDString* getMDString(const StringRef &Str);
+  /// 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, const Twine &ErrorStr);
+  void emitError(const Instruction *I, const Twine &ErrorStr);
+  void emitError(const Twine &ErrorStr);
+
+private:
+  // DO NOT IMPLEMENT
+  LLVMContext(LLVMContext&);
+  void operator=(LLVMContext&);
+
+  /// addModule - Register a module as being instantiated in this context.  If
+  /// the context is deleted, the module will be deleted as well.
+  void addModule(Module*);
   
+  /// removeModule - Unregister a module from this context.
+  void removeModule(Module*);
   
-  // Methods for erasing constants
-  void erase(MDString *M);
-  void erase(MDNode *M);
+  // Module needs access to the add/removeModule methods.
+  friend class Module;
 };
 
-/// 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();
 
 }