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New file, containing AllocInfo structure.

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llvm-svn: 9449
This commit is contained in:
Brian Gaeke 2003-10-23 20:31:51 +00:00
parent 314a41a61e
commit ede0b08125
1 changed files with 61 additions and 0 deletions
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lib/CodeGen/RegAlloc/AllocInfo.h Normal file
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//===-- AllocInfo.h - Store info about regalloc decisions -------*- 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 header file contains the data structure used to save the state
// of the global, graph-coloring register allocator.
//
//===----------------------------------------------------------------------===//
#ifndef ALLOCINFO_H
#define ALLOCINFO_H
#include "llvm/Type.h"
#include "llvm/DerivedTypes.h"
#include "llvm/Constants.h"
/// AllocInfo - Structure representing one instruction's operand's-worth of
/// register allocation state. We create tables made out of these data
/// structures to generate mapping information for this register allocator.
///
struct AllocInfo {
unsigned Instruction;
unsigned Operand;
unsigned AllocState;
int Placement;
AllocInfo (unsigned Instruction_, unsigned Operand_,
unsigned AllocState_, int Placement_) :
Instruction (Instruction_), Operand (Operand_),
AllocState (AllocState_), Placement (Placement_) { }
/// getConstantType - Return a StructType representing an AllocInfo object.
///
static StructType *getConstantType () {
std::vector<const Type *> TV;
TV.push_back (Type::UIntTy);
TV.push_back (Type::UIntTy);
TV.push_back (Type::UIntTy);
TV.push_back (Type::IntTy);
return StructType::get (TV);
}
/// toConstant - Convert this AllocInfo into an LLVM Constant of type
/// getConstantType(), and return the Constant.
///
Constant *toConstant () const {
StructType *ST = getConstantType ();
std::vector<Constant *> CV;
CV.push_back (ConstantUInt::get (Type::UIntTy, Instruction));
CV.push_back (ConstantUInt::get (Type::UIntTy, Operand));
CV.push_back (ConstantUInt::get (Type::UIntTy, AllocState));
CV.push_back (ConstantSInt::get (Type::IntTy, Placement));
return ConstantStruct::get (ST, CV);
}
};
#endif // ALLOCINFO_H