-//===-- 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.
//
//
//===----------------------------------------------------------------------===//
-#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
/// 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);
};
}