Check in LLVM r95781.
diff --git a/lib/CompilerDriver/Action.cpp b/lib/CompilerDriver/Action.cpp
new file mode 100644
index 0000000..7bcd30a
--- /dev/null
+++ b/lib/CompilerDriver/Action.cpp
@@ -0,0 +1,94 @@
+//===--- Action.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.
+//
+//===----------------------------------------------------------------------===//
+//
+// Action class - implementation and auxiliary functions.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/CompilerDriver/Action.h"
+#include "llvm/CompilerDriver/BuiltinOptions.h"
+
+#include "llvm/Support/raw_ostream.h"
+#include "llvm/System/Program.h"
+#include "llvm/System/TimeValue.h"
+
+#include <stdexcept>
+#include <string>
+
+using namespace llvm;
+using namespace llvmc;
+
+namespace {
+ int ExecuteProgram(const std::string& name,
+ const StrVector& 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.");
+
+ // Build the command line vector and the redirects array.
+ const sys::Path* redirects[3] = {0,0,0};
+ sys::Path stdout_redirect;
+
+ std::vector<const char*> argv;
+ argv.reserve((args.size()+2));
+ argv.push_back(name.c_str());
+
+ for (StrVector::const_iterator B = args.begin(), E = args.end();
+ B!=E; ++B) {
+ if (*B == ">") {
+ ++B;
+ stdout_redirect.set(*B);
+ redirects[1] = &stdout_redirect;
+ }
+ else {
+ argv.push_back((*B).c_str());
+ }
+ }
+ argv.push_back(0); // null terminate list.
+
+ // Invoke the program.
+ return sys::Program::ExecuteAndWait(prog, &argv[0], 0, &redirects[0]);
+ }
+
+ void print_string (const std::string& str) {
+ errs() << str << ' ';
+ }
+}
+
+namespace llvmc {
+ void AppendToGlobalTimeLog(const std::string& cmd, double time);
+}
+
+int llvmc::Action::Execute() const {
+ if (DryRun || VerboseMode) {
+ errs() << Command_ << " ";
+ std::for_each(Args_.begin(), Args_.end(), print_string);
+ errs() << '\n';
+ }
+ if (!DryRun) {
+ if (Time) {
+ sys::TimeValue now = sys::TimeValue::now();
+ int ret = ExecuteProgram(Command_, Args_);
+ sys::TimeValue now2 = sys::TimeValue::now();
+ now2 -= now;
+ double elapsed = now2.seconds() + now2.microseconds() / 1000000.0;
+ AppendToGlobalTimeLog(Command_, elapsed);
+
+ return ret;
+ }
+ else {
+ return ExecuteProgram(Command_, Args_);
+ }
+ }
+
+ return 0;
+}