mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-19 19:29:31 +00:00
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@299 91177308-0d34-0410-b5e6-96231b3b80d8
169 lines
5.3 KiB
C++
169 lines
5.3 KiB
C++
//===------------------------------------------------------------------------===
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// LLVM 'Analyze' UTILITY
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//
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// This utility is designed to print out the results of running various analysis
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// passes on a program. This is useful for understanding a program, or for
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// debugging an analysis pass.
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//
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// analyze --help - Output information about command line switches
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// analyze --quiet - Do not print analysis name before output
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//
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//===------------------------------------------------------------------------===
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#include <iostream>
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#include "llvm/Instruction.h"
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#include "llvm/Module.h"
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#include "llvm/Method.h"
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#include "llvm/Bytecode/Reader.h"
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#include "llvm/Assembly/Parser.h"
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#include "llvm/Support/CommandLine.h"
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#include "llvm/Analysis/Writer.h"
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#include "llvm/Analysis/Dominators.h"
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#include "llvm/Analysis/IntervalPartition.h"
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#include "llvm/Analysis/Expressions.h"
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static void PrintMethod(Method *M) {
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cout << M;
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}
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static void PrintIntervalPartition(Method *M) {
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cout << cfg::IntervalPartition(M);
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}
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static void PrintClassifiedExprs(Method *M) {
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cout << "Classified expressions for: " << M->getName() << endl;
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Method::inst_iterator I = M->inst_begin(), E = M->inst_end();
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for (; I != E; ++I) {
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cout << *I;
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if ((*I)->getType() == Type::VoidTy) continue;
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analysis::ExprType R = analysis::ClassifyExpression(*I);
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if (R.Var == *I) continue; // Doesn't tell us anything
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cout << "\t\tExpr =";
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switch (R.ExprTy) {
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case analysis::ExprType::ScaledLinear:
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WriteAsOperand(cout << "(", (Value*)R.Scale) << " ) *";
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// fall through
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case analysis::ExprType::Linear:
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WriteAsOperand(cout << "(", R.Var) << " )";
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if (R.Offset == 0) break;
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else cout << " +";
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// fall through
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case analysis::ExprType::Constant:
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if (R.Offset) WriteAsOperand(cout, (Value*)R.Offset); else cout << " 0";
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break;
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}
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cout << endl << endl;
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}
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}
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static void PrintDominatorSets(Method *M) {
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cout << cfg::DominatorSet(M);
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}
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static void PrintImmediateDominators(Method *M) {
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cout << cfg::ImmediateDominators(M);
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}
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static void PrintDominatorTree(Method *M) {
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cout << cfg::DominatorTree(M);
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}
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static void PrintDominanceFrontier(Method *M) {
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cout << cfg::DominanceFrontier(M);
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}
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static void PrintPostDominatorSets(Method *M) {
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cout << cfg::DominatorSet(M, true);
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}
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static void PrintImmediatePostDoms(Method *M) {
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cout << cfg::ImmediateDominators(cfg::DominatorSet(M, true));
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}
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static void PrintPostDomTree(Method *M) {
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cout << cfg::DominatorTree(cfg::DominatorSet(M, true));
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}
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static void PrintPostDomFrontier(Method *M) {
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cout << cfg::DominanceFrontier(cfg::DominatorSet(M, true));
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}
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enum Ans {
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print, intervals, exprclassify,
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domset, idom, domtree, domfrontier,
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postdomset, postidom, postdomtree, postdomfrontier,
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};
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cl::String InputFilename ("", "Load <arg> file to analyze", cl::NoFlags, "-");
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cl::Flag Quiet ("q", "Don't print analysis pass names");
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cl::Alias QuietA ("quiet", "Alias for -q", cl::NoFlags, Quiet);
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cl::EnumList<enum Ans> AnalysesList(cl::NoFlags,
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clEnumVal(print , "Print each Method"),
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clEnumVal(intervals , "Print Interval Partitions"),
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clEnumVal(exprclassify , "Classify Expressions"),
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clEnumVal(domset , "Print Dominator Sets"),
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clEnumVal(idom , "Print Immediate Dominators"),
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clEnumVal(domtree , "Print Dominator Tree"),
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clEnumVal(domfrontier , "Print Dominance Frontier"),
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clEnumVal(postdomset , "Print Postdominator Sets"),
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clEnumVal(postidom , "Print Immediate Postdominators"),
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clEnumVal(postdomtree , "Print Post Dominator Tree"),
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clEnumVal(postdomfrontier, "Print Postdominance Frontier"),
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0);
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struct {
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enum Ans AnID;
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void (*AnPtr)(Method *M);
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} AnTable[] = {
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{ print , PrintMethod },
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{ intervals , PrintIntervalPartition },
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{ exprclassify , PrintClassifiedExprs },
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{ domset , PrintDominatorSets },
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{ idom , PrintImmediateDominators },
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{ domtree , PrintDominatorTree },
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{ domfrontier , PrintDominanceFrontier },
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{ postdomset , PrintPostDominatorSets },
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{ postidom , PrintImmediatePostDoms },
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{ postdomtree , PrintPostDomTree },
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{ postdomfrontier, PrintPostDomFrontier },
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};
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int main(int argc, char **argv) {
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cl::ParseCommandLineOptions(argc, argv, " llvm analysis printer tool\n");
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Module *C = ParseBytecodeFile(InputFilename);
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if (!C && !(C = ParseAssemblyFile(InputFilename))) {
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cerr << "Input file didn't read correctly.\n";
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return 1;
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}
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// Loop over all of the methods in the module...
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for (Module::iterator I = C->begin(), E = C->end(); I != E; ++I) {
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Method *M = *I;
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if (M->isExternal()) continue;
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for (unsigned i = 0; i < AnalysesList.size(); ++i) {
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enum Ans AnalysisPass = AnalysesList[i];
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// Loop over all of the analyses to be run...
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unsigned j;
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for (j = 0; j < sizeof(AnTable)/sizeof(AnTable[0]); ++j) {
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if (AnalysisPass == AnTable[j].AnID) {
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if (!Quiet)
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cerr << "Running: " << AnalysesList.getArgDescription(AnalysisPass)
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<< " analysis on '" << ((Value*)M)->getName() << "'!\n";
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AnTable[j].AnPtr(M);
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break;
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}
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}
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if (j == sizeof(AnTable)/sizeof(AnTable[0]))
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cerr << "Analysis tables inconsistent!\n";
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}
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}
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delete C;
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return 0;
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}
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