mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-11-01 15:11:24 +00:00
c74cb8698f
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3550 91177308-0d34-0410-b5e6-96231b3b80d8
102 lines
3.2 KiB
C++
102 lines
3.2 KiB
C++
//===- AnalysisWrappers.cpp - Wrappers around non-pass analyses -----------===//
|
|
//
|
|
// This file defines pass wrappers around LLVM analyses that don't make sense to
|
|
// be passes. It provides a nice standard pass interface to these classes so
|
|
// that they can be printed out by analyze.
|
|
//
|
|
// These classes are seperated out of analyze.cpp so that it is more clear which
|
|
// code is the integral part of the analyze tool, and which part of the code is
|
|
// just making it so more passes are available.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm/iPHINode.h"
|
|
#include "llvm/Type.h"
|
|
#include "llvm/Assembly/Writer.h"
|
|
#include "llvm/Analysis/InstForest.h"
|
|
#include "llvm/Analysis/Expressions.h"
|
|
#include "llvm/Analysis/InductionVariable.h"
|
|
#include "llvm/Analysis/LoopInfo.h"
|
|
#include "llvm/Support/InstIterator.h"
|
|
|
|
namespace {
|
|
struct InstForestHelper : public FunctionPass {
|
|
Function *F;
|
|
virtual bool runOnFunction(Function &Func) { F = &Func; return false; }
|
|
|
|
void print(std::ostream &OS) const {
|
|
std::cout << InstForest<char>(F);
|
|
}
|
|
|
|
virtual void getAnalysisUsage(AnalysisUsage &AU) const {
|
|
AU.setPreservesAll();
|
|
}
|
|
};
|
|
|
|
RegisterAnalysis<InstForestHelper> P1("instforest", "InstForest Printer");
|
|
|
|
struct IndVars : public FunctionPass {
|
|
Function *F;
|
|
LoopInfo *LI;
|
|
virtual bool runOnFunction(Function &Func) {
|
|
F = &Func; LI = &getAnalysis<LoopInfo>();
|
|
return false;
|
|
}
|
|
|
|
void print(std::ostream &OS) const {
|
|
for (inst_iterator I = inst_begin(*F), E = inst_end(*F); I != E; ++I)
|
|
if (PHINode *PN = dyn_cast<PHINode>(*I)) {
|
|
InductionVariable IV(PN, LI);
|
|
if (IV.InductionType != InductionVariable::Unknown)
|
|
IV.print(OS);
|
|
}
|
|
}
|
|
|
|
void getAnalysisUsage(AnalysisUsage &AU) const {
|
|
AU.addRequired<LoopInfo>();
|
|
AU.setPreservesAll();
|
|
}
|
|
};
|
|
|
|
RegisterAnalysis<IndVars> P6("indvars", "Induction Variable Analysis");
|
|
|
|
|
|
struct Exprs : public FunctionPass {
|
|
Function *F;
|
|
virtual bool runOnFunction(Function &Func) { F = &Func; return false; }
|
|
|
|
void print(std::ostream &OS) const {
|
|
OS << "Classified expressions for: " << F->getName() << "\n";
|
|
for (inst_iterator I = inst_begin(*F), E = inst_end(*F); I != E; ++I) {
|
|
OS << *I;
|
|
|
|
if ((*I)->getType() == Type::VoidTy) continue;
|
|
ExprType R = ClassifyExpression(*I);
|
|
if (R.Var == *I) continue; // Doesn't tell us anything
|
|
|
|
OS << "\t\tExpr =";
|
|
switch (R.ExprTy) {
|
|
case ExprType::ScaledLinear:
|
|
WriteAsOperand(OS << "(", (Value*)R.Scale) << " ) *";
|
|
// fall through
|
|
case ExprType::Linear:
|
|
WriteAsOperand(OS << "(", R.Var) << " )";
|
|
if (R.Offset == 0) break;
|
|
else OS << " +";
|
|
// fall through
|
|
case ExprType::Constant:
|
|
if (R.Offset) WriteAsOperand(OS, (Value*)R.Offset);
|
|
else OS << " 0";
|
|
break;
|
|
}
|
|
OS << "\n\n";
|
|
}
|
|
}
|
|
virtual void getAnalysisUsage(AnalysisUsage &AU) const {
|
|
AU.setPreservesAll();
|
|
}
|
|
};
|
|
|
|
RegisterAnalysis<Exprs> P7("exprs", "Expression Printer");
|
|
}
|