Implement methods that enable expansion of load immediate

[oota-llvm.git] / lib / Support / SystemUtils.cpp

diff --git a/lib/Support/SystemUtils.cpp b/lib/Support/SystemUtils.cpp
index 30b9f8d43d5da950f914eeab18b23bde516c676a..54b5e97bfe18daa2712650aef07b57d102666b79 100644 (file)
--- a/lib/Support/SystemUtils.cpp
+++ b/lib/Support/SystemUtils.cpp
@@ -2,8 +2,8 @@
 //
 //                     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.
 //
 //===----------------------------------------------------------------------===//
 //
@@ -12,47 +12,44 @@
 //
 //===----------------------------------------------------------------------===//
 
-#include "llvm/Support/Streams.h"
 #include "llvm/Support/SystemUtils.h"
-#include "llvm/System/Process.h"
-#include "llvm/System/Program.h"
-#include <ostream>
+#include "llvm/Support/Process.h"
+#include "llvm/Support/Program.h"
+#include "llvm/Support/raw_ostream.h"
 using namespace llvm;
 
-bool llvm::CheckBytecodeOutputToConsole(std::ostream* stream_to_check,
-                                        bool print_warning) {
-  if (stream_to_check == cout.stream() &&
-      sys::Process::StandardOutIsDisplayed()) {
+bool llvm::CheckBitcodeOutputToConsole(raw_ostream &stream_to_check,
+                                       bool print_warning) {
+  if (stream_to_check.is_displayed()) {
     if (print_warning) {
-      cerr << "WARNING: You're attempting to print out a bytecode file.\n"
-           << "This is inadvisable as it may cause display problems. If\n"
-           << "you REALLY want to taste LLVM bytecode first-hand, you\n"
-           << "can force output with the `-f' option.\n\n";
+      errs() << "WARNING: You're attempting to print out a bitcode file.\n"
+                "This is inadvisable as it may cause display problems. If\n"
+                "you REALLY want to taste LLVM bitcode first-hand, you\n"
+                "can force output with the `-f' option.\n\n";
     }
     return true;
   }
   return false;
 }
 
-/// FindExecutable - Find a named executable, giving the argv[0] of program
-/// being executed. This allows us to find another LLVM tool if it is built
-/// into the same directory, but that directory is neither the current
-/// directory, nor in the PATH.  If the executable cannot be found, return an
-/// empty string.
-///
-#undef FindExecutable   // needed on windows :(
-sys::Path llvm::FindExecutable(const std::string &ExeName,
-                               const std::string &ProgramPath) {
-  // First check the directory that the calling program is in.  We can do this
-  // if ProgramPath contains at least one / character, indicating that it is a
-  // relative path to bugpoint itself.
-  sys::Path Result ( ProgramPath );
+/// PrependMainExecutablePath - Prepend the path to the program being executed
+/// to \p ExeName, given the value of argv[0] and the address of main()
+/// itself. This allows us to find another LLVM tool if it is built in the same
+/// directory. An empty string is returned on error; note that this function
+/// just mainpulates the path and doesn't check for executability.
+/// @brief Find a named executable.
+sys::Path llvm::PrependMainExecutablePath(const std::string &ExeName,
+                                          const char *Argv0, void *MainAddr) {
+  // Check the directory that the calling program is in.  We can do
+  // this if ProgramPath contains at least one / character, indicating that it
+  // is a relative path to the executable itself.
+  sys::Path Result = sys::Path::GetMainExecutable(Argv0, MainAddr);
   Result.eraseComponent();
+
   if (!Result.isEmpty()) {
     Result.appendComponent(ExeName);
-    if (Result.canExecute())
-      return Result;
+    Result.appendSuffix(sys::Path::GetEXESuffix());
   }
 
-  return sys::Program::FindProgramByName(ExeName);
+  return Result;
 }