Import LLVM, at r72732.

1 files changed, 89 insertions, 0 deletions

diff --git a/lib/Support/GraphWriter.cpp b/lib/Support/GraphWriter.cpp
new file mode 100644
index 0000000..c359dfb
--- /dev/null
+++ b/lib/Support/GraphWriter.cpp
@@ -0,0 +1,89 @@
+//===-- GraphWriter.cpp - Implements GraphWriter support routines ---------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements misc. GraphWriter support routines.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/Support/GraphWriter.h"
+#include "llvm/Support/Streams.h"
+#include "llvm/System/Path.h"
+#include "llvm/System/Program.h"
+#include "llvm/Config/config.h"
+using namespace llvm;
+
+void llvm::DisplayGraph(const sys::Path &Filename) {
+  std::string ErrMsg;
+#if HAVE_GRAPHVIZ
+  sys::Path Graphviz(LLVM_PATH_GRAPHVIZ);
+
+  std::vector<const char*> args;
+  args.push_back(Graphviz.c_str());
+  args.push_back(Filename.c_str());
+  args.push_back(0);
+  
+  cerr << "Running 'Graphviz' program... " << std::flush;
+  if (sys::Program::ExecuteAndWait(Graphviz, &args[0],0,0,0,0,&ErrMsg)) {
+    cerr << "Error viewing graph: " << ErrMsg << "\n";
+  }
+#elif (HAVE_GV && HAVE_DOT)
+  sys::Path PSFilename = Filename;
+  PSFilename.appendSuffix("ps");
+  
+  sys::Path dot(LLVM_PATH_DOT);
+
+  std::vector<const char*> args;
+  args.push_back(dot.c_str());
+  args.push_back("-Tps");
+  args.push_back("-Nfontname=Courier");
+  args.push_back("-Gsize=7.5,10");
+  args.push_back(Filename.c_str());
+  args.push_back("-o");
+  args.push_back(PSFilename.c_str());
+  args.push_back(0);
+  
+  cerr << "Running 'dot' program... " << std::flush;
+  if (sys::Program::ExecuteAndWait(dot, &args[0],0,0,0,0,&ErrMsg)) {
+    cerr << "Error viewing graph: '" << ErrMsg << "\n";
+  } else {
+    cerr << " done. \n";
+
+    sys::Path gv(LLVM_PATH_GV);
+    args.clear();
+    args.push_back(gv.c_str());
+    args.push_back(PSFilename.c_str());
+    args.push_back("-spartan");
+    args.push_back(0);
+    
+    ErrMsg.clear();
+    if (sys::Program::ExecuteAndWait(gv, &args[0],0,0,0,0,&ErrMsg)) {
+      cerr << "Error viewing graph: " << ErrMsg << "\n";
+    }
+  }
+  PSFilename.eraseFromDisk();
+#elif HAVE_DOTTY
+  sys::Path dotty(LLVM_PATH_DOTTY);
+
+  std::vector<const char*> args;
+  args.push_back(dotty.c_str());
+  args.push_back(Filename.c_str());
+  args.push_back(0);
+  
+  cerr << "Running 'dotty' program... " << std::flush;
+  if (sys::Program::ExecuteAndWait(dotty, &args[0],0,0,0,0,&ErrMsg)) {
+    cerr << "Error viewing graph: " << ErrMsg << "\n";
+  } else {
+#ifdef __MINGW32__ // Dotty spawns another app and doesn't wait until it returns
+    return;
+#endif
+  }
+#endif
+  
+  Filename.eraseFromDisk();
+}