| //===- llvm/Analysis/LoadValueNumbering.h - Value # Load Insts --*- 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 a value numbering pass that value #'s load instructions. |
| // To do this, it finds lexically identical load instructions, and uses alias |
| // analysis to determine which loads are guaranteed to produce the same value. |
| // |
| // This pass builds off of another value numbering pass to implement value |
| // numbering for non-load instructions. It uses Alias Analysis so that it can |
| // disambiguate the load instructions. The more powerful these base analyses |
| // are, the more powerful the resultant analysis will be. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLVM_ANALYSIS_LOAD_VALUE_NUMBERING_H |
| #define LLVM_ANALYSIS_LOAD_VALUE_NUMBERING_H |
| |
| namespace llvm { |
| |
| class FunctionPass; |
| |
| /// createLoadValueNumberingPass - Create and return a new pass that implements |
| /// the ValueNumbering interface. |
| /// |
| FunctionPass *createLoadValueNumberingPass(); |
| |
| } // End llvm namespace |
| |
| #endif |
