X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FAnalysis%2FCFGPrinter.cpp;h=f28b2dc787d82048116557b885caca9aec2db36c;hb=00667a54f21f2d58382ac2eed973706332ed5817;hp=ac78970cc29db2a53f34b75bbbe37def20e1511a;hpb=1ca2a583cb234cc8b26710e0f2ff68da2b6d24cd;p=oota-llvm.git diff --git a/lib/Analysis/CFGPrinter.cpp b/lib/Analysis/CFGPrinter.cpp index ac78970cc29..f28b2dc787d 100644 --- a/lib/Analysis/CFGPrinter.cpp +++ b/lib/Analysis/CFGPrinter.cpp @@ -1,13 +1,13 @@ //===- CFGPrinter.cpp - DOT printer for the control flow graph ------------===// -// +// // 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 is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// //===----------------------------------------------------------------------===// // -// This file defines a '-print-cfg' analysis pass, which emits the +// This file defines a '-dot-cfg' analysis pass, which emits the // cfg..dot file for each function in the program, with a graph of the // CFG for that function. // @@ -17,150 +17,126 @@ // //===----------------------------------------------------------------------===// -#include "Support/GraphWriter.h" +#include "llvm/Analysis/CFGPrinter.h" + #include "llvm/Pass.h" -#include "llvm/Function.h" -#include "llvm/iTerminators.h" -#include "llvm/Assembly/Writer.h" -#include "llvm/Support/CFG.h" -#include -#include using namespace llvm; -/// CFGOnly flag - This is used to control whether or not the CFG graph printer -/// prints out the contents of basic blocks or not. This is acceptable because -/// this code is only really used for debugging purposes. -/// -static bool CFGOnly = false; - -namespace llvm { -template<> -struct DOTGraphTraits : public DefaultDOTGraphTraits { - static std::string getGraphName(const Function *F) { - return "CFG for '" + F->getName() + "' function"; - } - - static std::string getNodeLabel(const BasicBlock *Node, - const Function *Graph) { - if (CFGOnly && !Node->getName().empty()) - return Node->getName() + ":"; - - std::ostringstream Out; - if (CFGOnly) { - WriteAsOperand(Out, Node, false, true); - return Out.str(); +namespace { + struct CFGViewer : public FunctionPass { + static char ID; // Pass identifcation, replacement for typeid + CFGViewer() : FunctionPass(ID) {} + + virtual bool runOnFunction(Function &F) { + F.viewCFG(); + return false; } - if (Node->getName().empty()) { - WriteAsOperand(Out, Node, false, true); - Out << ":"; + void print(raw_ostream &OS, const Module* = 0) const {} + + virtual void getAnalysisUsage(AnalysisUsage &AU) const { + AU.setPreservesAll(); } + }; +} + +char CFGViewer::ID = 0; +INITIALIZE_PASS(CFGViewer, "view-cfg", "View CFG of function", false, true); + +namespace { + struct CFGOnlyViewer : public FunctionPass { + static char ID; // Pass identifcation, replacement for typeid + CFGOnlyViewer() : FunctionPass(ID) {} + + virtual bool runOnFunction(Function &F) { + F.viewCFGOnly(); + return false; + } + + void print(raw_ostream &OS, const Module* = 0) const {} - Out << *Node; - std::string OutStr = Out.str(); - if (OutStr[0] == '\n') OutStr.erase(OutStr.begin()); - - // Process string output to make it nicer... - for (unsigned i = 0; i != OutStr.length(); ++i) - if (OutStr[i] == '\n') { // Left justify - OutStr[i] = '\\'; - OutStr.insert(OutStr.begin()+i+1, 'l'); - } else if (OutStr[i] == ';') { // Delete comments! - unsigned Idx = OutStr.find('\n', i+1); // Find end of line - OutStr.erase(OutStr.begin()+i, OutStr.begin()+Idx); - --i; - } - - return OutStr; - } - - static std::string getNodeAttributes(const BasicBlock *N) { - return "fontname=Courier"; - } - - static std::string getEdgeSourceLabel(const BasicBlock *Node, - succ_const_iterator I) { - // Label source of conditional branches with "T" or "F" - if (const BranchInst *BI = dyn_cast(Node->getTerminator())) - if (BI->isConditional()) - return (I == succ_begin(Node)) ? "T" : "F"; - return ""; - } -}; + virtual void getAnalysisUsage(AnalysisUsage &AU) const { + AU.setPreservesAll(); + } + }; } +char CFGOnlyViewer::ID = 0; +INITIALIZE_PASS(CFGOnlyViewer, "view-cfg-only", + "View CFG of function (with no function bodies)", false, true); + namespace { struct CFGPrinter : public FunctionPass { + static char ID; // Pass identification, replacement for typeid + CFGPrinter() : FunctionPass(ID) {} + explicit CFGPrinter(char &pid) : FunctionPass(pid) {} + virtual bool runOnFunction(Function &F) { - std::string Filename = "cfg." + F.getName() + ".dot"; - std::cerr << "Writing '" << Filename << "'..."; - std::ofstream File(Filename.c_str()); + std::string Filename = "cfg." + F.getNameStr() + ".dot"; + errs() << "Writing '" << Filename << "'..."; - if (File.good()) + std::string ErrorInfo; + raw_fd_ostream File(Filename.c_str(), ErrorInfo); + + if (ErrorInfo.empty()) WriteGraph(File, (const Function*)&F); else - std::cerr << " error opening file for writing!"; - std::cerr << "\n"; + errs() << " error opening file for writing!"; + errs() << "\n"; return false; } - void print(std::ostream &OS) const {} - + void print(raw_ostream &OS, const Module* = 0) const {} + virtual void getAnalysisUsage(AnalysisUsage &AU) const { AU.setPreservesAll(); } }; +} - RegisterAnalysis P1("print-cfg", - "Print CFG of function to 'dot' file"); +char CFGPrinter::ID = 0; +static RegisterPass +P1("dot-cfg", "Print CFG of function to 'dot' file", false, true); - struct CFGOnlyPrinter : public CFGPrinter { +namespace { + struct CFGOnlyPrinter : public FunctionPass { + static char ID; // Pass identification, replacement for typeid + CFGOnlyPrinter() : FunctionPass(ID) {} + explicit CFGOnlyPrinter(char &pid) : FunctionPass(pid) {} virtual bool runOnFunction(Function &F) { - bool OldCFGOnly = CFGOnly; - CFGOnly = true; - CFGPrinter::runOnFunction(F); - CFGOnly = OldCFGOnly; + std::string Filename = "cfg." + F.getNameStr() + ".dot"; + errs() << "Writing '" << Filename << "'..."; + + std::string ErrorInfo; + raw_fd_ostream File(Filename.c_str(), ErrorInfo); + + if (ErrorInfo.empty()) + WriteGraph(File, (const Function*)&F, true); + else + errs() << " error opening file for writing!"; + errs() << "\n"; return false; } - void print(std::ostream &OS) const {} - + void print(raw_ostream &OS, const Module* = 0) const {} + virtual void getAnalysisUsage(AnalysisUsage &AU) const { AU.setPreservesAll(); } }; - - RegisterAnalysis - P2("print-cfg-only", - "Print CFG of function to 'dot' file (with no function bodies)"); } +char CFGOnlyPrinter::ID = 0; +static RegisterPass +P2("dot-cfg-only", + "Print CFG of function to 'dot' file (with no function bodies)", false, true); + /// viewCFG - This function is meant for use from the debugger. You can just /// say 'call F->viewCFG()' and a ghostview window should pop up from the /// program, displaying the CFG of the current function. This depends on there /// being a 'dot' and 'gv' program in your path. /// void Function::viewCFG() const { - std::string Filename = "/tmp/cfg." + getName() + ".dot"; - std::cerr << "Writing '" << Filename << "'... "; - std::ofstream F(Filename.c_str()); - - if (!F.good()) { - std::cerr << " error opening file for writing!\n"; - return; - } - - WriteGraph(F, this); - F.close(); - std::cerr << "\n"; - - std::cerr << "Running 'dot' program... " << std::flush; - if (system(("dot -Tps " + Filename + " > /tmp/cfg.tempgraph.ps").c_str())) { - std::cerr << "Error running dot: 'dot' not in path?\n"; - } else { - std::cerr << "\n"; - system("gv /tmp/cfg.tempgraph.ps"); - } - system(("rm " + Filename + " /tmp/cfg.tempgraph.ps").c_str()); + ViewGraph(this, "cfg" + getNameStr()); } /// viewCFGOnly - This function is meant for use from the debugger. It works @@ -169,7 +145,14 @@ void Function::viewCFG() const { /// his can make the graph smaller. /// void Function::viewCFGOnly() const { - CFGOnly = true; - viewCFG(); - CFGOnly = false; + ViewGraph(this, "cfg" + getNameStr(), true); } + +FunctionPass *llvm::createCFGPrinterPass () { + return new CFGPrinter(); +} + +FunctionPass *llvm::createCFGOnlyPrinterPass () { + return new CFGOnlyPrinter(); +} +