mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-11-15 04:08:07 +00:00
9eb59ec548
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22520 91177308-0d34-0410-b5e6-96231b3b80d8
93 lines
2.5 KiB
C++
93 lines
2.5 KiB
C++
//===-- DependenceAnalyzer.h - Dependence Analyzer--------------*- 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.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_DEPENDENCEANALYZER_H
|
|
#define LLVM_DEPENDENCEANALYZER_H
|
|
|
|
#include "llvm/Instructions.h"
|
|
#include "llvm/Function.h"
|
|
#include "llvm/Pass.h"
|
|
#include "llvm/Analysis/AliasAnalysis.h"
|
|
#include "llvm/Analysis/ScalarEvolutionExpressions.h"
|
|
#include "llvm/Target/TargetData.h"
|
|
#include <vector>
|
|
|
|
namespace llvm {
|
|
|
|
|
|
//class to represent a dependence
|
|
struct Dependence {
|
|
|
|
enum DataDepType {
|
|
TrueDep, AntiDep, OutputDep, NonDateDep,
|
|
};
|
|
|
|
Dependence(int diff, DataDepType dep) : iteDiff(diff), depType(dep) {}
|
|
unsigned getIteDiff() { return iteDiff; }
|
|
unsigned getDepType() { return depType; }
|
|
|
|
private:
|
|
|
|
unsigned iteDiff;
|
|
unsigned depType;
|
|
};
|
|
|
|
|
|
struct DependenceResult {
|
|
std::vector<Dependence> dependences;
|
|
DependenceResult(const std::vector<Dependence> &d) : dependences(d) {}
|
|
};
|
|
|
|
|
|
class DependenceAnalyzer : public FunctionPass {
|
|
|
|
|
|
AliasAnalysis *AA;
|
|
TargetData *TD;
|
|
ScalarEvolution *SE;
|
|
|
|
void advancedDepAnalysis(GetElementPtrInst *gp1, GetElementPtrInst *gp2,
|
|
bool valLoad, bool val2Load,
|
|
std::vector<Dependence> &deps, bool srcBeforeDest);
|
|
|
|
void AnalyzeDeps(Value *val, Value *val2, bool val1Load, bool val2Load,
|
|
std::vector<Dependence> &deps, BasicBlock *BB,
|
|
bool srcBeforeDest);
|
|
|
|
void createDep(std::vector<Dependence> &deps, bool valLoad, bool val2Load,
|
|
bool srcBeforeDest, int diff = 0);
|
|
|
|
public:
|
|
DependenceAnalyzer() { AA = 0; TD = 0; SE = 0; }
|
|
virtual bool runOnFunction(Function &F);
|
|
virtual const char* getPassName() const { return "DependenceAnalyzer"; }
|
|
|
|
// getAnalysisUsage
|
|
virtual void getAnalysisUsage(AnalysisUsage &AU) const {
|
|
AU.addRequired<AliasAnalysis>();
|
|
AU.addRequired<TargetData>();
|
|
AU.addRequired<ScalarEvolution>();
|
|
AU.setPreservesAll();
|
|
}
|
|
|
|
//get dependence info
|
|
DependenceResult getDependenceInfo(Instruction *inst1, Instruction *inst2,
|
|
bool srcBeforeDest);
|
|
|
|
};
|
|
|
|
}
|
|
|
|
|
|
|
|
#endif
|