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For PR798:
Add support for Graphviz. Patch contributed by Anton Korobeynikov. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28684 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -27,6 +27,8 @@
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#include "llvm/Instructions.h"
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#include "llvm/Support/LeakDetector.h"
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#include "llvm/Support/GraphWriter.h"
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#include "llvm/System/Path.h"
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#include "llvm/System/Program.h"
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#include "llvm/Config/config.h"
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#include <fstream>
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#include <iostream>
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@ -218,7 +220,13 @@ namespace llvm {
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void MachineFunction::viewCFG() const
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{
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#ifndef NDEBUG
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std::string Filename = "/tmp/cfg." + getFunction()->getName() + ".dot";
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char pathsuff[9];
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sprintf(pathsuff, "%06u", unsigned(rand()));
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sys::Path TempDir = sys::Path::GetTemporaryDirectory();
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sys::Path Filename = TempDir;
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Filename.appendComponent("mf" + getFunction()->getName() + "." + pathsuff + ".dot");
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std::cerr << "Writing '" << Filename << "'... ";
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std::ofstream F(Filename.c_str());
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@ -231,34 +239,77 @@ void MachineFunction::viewCFG() const
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F.close();
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std::cerr << "\n";
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#ifdef HAVE_GRAPHVIZ
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#if HAVE_GRAPHVIZ
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sys::Path Graphviz(LLVM_PATH_GRAPHVIZ);
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std::vector<const char*> args;
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args.push_back(Graphviz.c_str());
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args.push_back(Filename.c_str());
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args.push_back(0);
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std::cerr << "Running 'Graphviz' program... " << std::flush;
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if (system((LLVM_PATH_GRAPHVIZ " " + Filename).c_str())) {
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if (sys::Program::ExecuteAndWait(Graphviz, &args[0])) {
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std::cerr << "Error viewing graph: 'Graphviz' not in path?\n";
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} else {
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system(("rm " + Filename).c_str());
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Filename.eraseFromDisk();
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return;
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}
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#endif // HAVE_GRAPHVIZ
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#elif (HAVE_GV && HAVE_DOT)
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sys::Path PSFilename = TempDir;
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PSFilename.appendComponent(std::string("mf.tempgraph") + "." + pathsuff + ".ps");
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#ifdef HAVE_GV
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sys::Path dot(LLVM_PATH_DOT);
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std::vector<const char*> args;
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args.push_back(dot.c_str());
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args.push_back("-Tps");
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args.push_back("-Nfontname=Courier");
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args.push_back("-Gsize=7.5,10");
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args.push_back(Filename.c_str());
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args.push_back("-o");
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args.push_back(PSFilename.c_str());
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args.push_back(0);
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std::cerr << "Running 'dot' program... " << std::flush;
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if (system(("dot -Tps -Nfontname=Courier -Gsize=7.5,10 " + Filename
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+ " > /tmp/cfg.tempgraph.ps").c_str())) {
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std::cerr << "Error running dot: 'dot' not in path?\n";
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if (sys::Program::ExecuteAndWait(dot, &args[0])) {
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std::cerr << "Error viewing graph: 'dot' not in path?\n";
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} else {
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std::cerr << "\n";
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system("gv /tmp/cfg.tempgraph.ps");
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sys::Path gv(LLVM_PATH_GV);
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args.clear();
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args.push_back(gv.c_str());
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args.push_back(PSFilename.c_str());
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args.push_back(0);
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sys::Program::ExecuteAndWait(gv, &args[0]);
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}
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system(("rm " + Filename + " /tmp/cfg.tempgraph.ps").c_str());
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Filename.eraseFromDisk();
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PSFilename.eraseFromDisk();
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return;
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#endif // HAVE_GV
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#elif HAVE_DOTTY
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sys::Path dotty(LLVM_PATH_DOTTY);
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std::vector<const char*> args;
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args.push_back(dotty.c_str());
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args.push_back(Filename.c_str());
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args.push_back(0);
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std::cerr << "Running 'dotty' program... " << std::flush;
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if (sys::Program::ExecuteAndWait(dotty, &args[0])) {
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std::cerr << "Error viewing graph: 'dotty' not in path?\n";
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} else {
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#ifndef __MINGW32__ // Dotty spawns another app and doesn't wait until it returns
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Filename.eraseFromDisk();
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#endif
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return;
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}
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#endif
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#endif // NDEBUG
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std::cerr << "MachineFunction::viewCFG is only available in debug builds on "
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<< "systems with Graphviz or gv!\n";
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#ifndef NDEBUG
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system(("rm " + Filename).c_str());
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Filename.eraseFromDisk();
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TempDir.eraseFromDisk(true);
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#endif
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}
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