Remove some of the obvious v9-specific cruft

[oota-llvm.git] / include / llvm / CodeGen / IntrinsicLowering.h

diff --git a/include/llvm/CodeGen/IntrinsicLowering.h b/include/llvm/CodeGen/IntrinsicLowering.h
index 9d4d89a0acf4be435d0e9751879f6d9cb6c2f3d9..e56a646786cd71c444f0ec94978566fc5fc46063 100644 (file)
--- a/include/llvm/CodeGen/IntrinsicLowering.h
+++ b/include/llvm/CodeGen/IntrinsicLowering.h
@@ -1,23 +1,23 @@
-//===-- llvm/IntrinsicLowering.h - Intrinsic Function Lowering --*- C++ -*-===//
-// 
+//===-- IntrinsicLowering.h - Intrinsic Function Lowering -------*- C++ -*-===//
+//
 //                     The LLVM Compiler Infrastructure
 //
 // This file was developed by the LLVM research group and is distributed under
 // the University of Illinois Open Source License. See LICENSE.TXT for details.
-// 
+//
 //===----------------------------------------------------------------------===//
-// 
+//
 // This file defines the IntrinsicLowering interface.  This interface allows
 // addition of domain-specific or front-end specific intrinsics to LLVM without
-// having to modify all of the target-machines to support the new intrinsic.
-// Later, as desired, code generators can incrementally add support for
-// particular intrinsic functions, as desired, to generate better code.
+// having to modify all of the code generators to support the new intrinsic.
+// Later, as desired, targets can incrementally add support for particular
+// intrinsic functions, as desired, to generate better code.
 //
 // If a code generator cannot handle or does not know about an intrinsic
 // function, it will use the intrinsic lowering interface to change an intrinsic
 // function name into a concrete function name which can be used to implement
-// the functionality of the intrinsic.  For example, llvm.acos can be
-// implemented as a call to the math library 'acos' function if the target
+// the functionality of the intrinsic.  For example, llvm.memcpy can be
+// implemented as a call to the math library 'memcpy' function if the target
 // doesn't have hardware support for the intrinsic, or if it has not yet been
 // implemented yet.
 //
@@ -30,13 +30,24 @@
 //
 //===----------------------------------------------------------------------===//
 
-#ifndef LLVM_INTRINSICLOWERING_H
-#define LLVM_INTRINSICLOWERING_H
+#ifndef LLVM_CODEGEN_INTRINSICLOWERING_H
+#define LLVM_CODEGEN_INTRINSICLOWERING_H
+
+#include "llvm/Intrinsics.h"
 
 namespace llvm {
   class CallInst;
-  
-  struct IntrinsicLowering {
+  class Module;
+
+  class IntrinsicLowering {
+  public:
+    IntrinsicLowering() {}
+    virtual ~IntrinsicLowering() {}
+
+    /// AddPrototypes - This method, if called, causes all of the prototypes
+    /// that might be needed by an intrinsic lowering implementation to be
+    /// inserted into the module specified.
+    virtual void AddPrototypes(Module &M) = 0;
 
     /// LowerIntrinsicCall - This method returns the LLVM function which should
     /// be used to implement the specified intrinsic function call.  If an
@@ -56,7 +67,8 @@ namespace llvm {
   /// implementations should pass any unhandled intrinsics to this
   /// implementation to allow for future extensibility.
   struct DefaultIntrinsicLowering : public IntrinsicLowering {
-    virtual void LowerIntrinsicCall(CallInst *CI);    
+    virtual void AddPrototypes(Module &M);
+    virtual void LowerIntrinsicCall(CallInst *CI);
   };
 }