Add first proof-of-concept universal compiler driver framework based

on ideas mentioned in PR686.
Written by Mikhail Glushenkov and contributed by Codedgers, Inc.

Old llvmc will be removed soon after new one will have all its properties.

llvm-svn: 48699

1 files changed, 39 insertions, 0 deletions

diff --git a/llvm/tools/llvmc2/Utility.cpp b/llvm/tools/llvmc2/Utility.cpp
new file mode 100644
index 00000000000..c53578ad44b
--- /dev/null
+++ b/llvm/tools/llvmc2/Utility.cpp
@@ -0,0 +1,39 @@
+//===--- Utility.cpp - The LLVM Compiler Driver -----------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open
+// Source License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+//  Various helper and utility functions - implementation.
+//
+//===----------------------------------------------------------------------===//
+
+#include "Utility.h"
+
+#include "llvm/System/Program.h"
+
+#include <stdexcept>
+
+using namespace llvm;
+
+int llvmcc::ExecuteProgram(const std::string& name,
+                           const std::vector<std::string>& args) {
+  sys::Path prog = sys::Program::FindProgramByName(name);
+
+  if (prog.isEmpty())
+    throw std::runtime_error("Can't find program '" + name + "'");
+  if (!prog.canExecute())
+    throw std::runtime_error("Program '" + name + "' is not executable.");
+
+  // Invoke the program
+  std::vector<const char*> argv((args.size()+2));
+  argv[0] = name.c_str();
+  for (unsigned i = 1; i <= args.size(); ++i)
+    argv[i] = args[i-1].c_str();
+  argv[args.size()+1] = 0;  // null terminate list.
+
+  return sys::Program::ExecuteAndWait(prog, &argv[0]);
+}