Provide correct NEON encodings for vaddl.u* and vaddl.s*.

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

diff --git a/lib/Support/SystemUtils.cpp b/lib/Support/SystemUtils.cpp
index d4dbaeecc40dc73ee12df9702c137716433ea0f7..c8b260c2e3dd9b4174fa224c9e124b0a11b2c5e7 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.
 //
 //===----------------------------------------------------------------------===//
 //
@@ -12,21 +12,20 @@
 //
 //===----------------------------------------------------------------------===//
 
-#include "llvm/Support/Streams.h"
 #include "llvm/Support/SystemUtils.h"
 #include "llvm/System/Process.h"
 #include "llvm/System/Program.h"
-#include <iostream>
+#include "llvm/Support/raw_ostream.h"
 using namespace llvm;
 
-bool llvm::CheckBytecodeOutputToConsole(std::ostream* stream_to_check,
-                                        bool print_warning) {
-  if (stream_to_check == &std::cout && sys::Process::StandardOutIsDisplayed()) {
+bool llvm::CheckBitcodeOutputToConsole(raw_ostream &stream_to_check,
+                                       bool print_warning) {
+  if (stream_to_check.is_displayed()) {
     if (print_warning) {
-      llvm_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;
   }
@@ -34,24 +33,33 @@ bool llvm::CheckBytecodeOutputToConsole(std::ostream* stream_to_check,
 }
 
 /// 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
+/// being executed. This allows us to find another LLVM tool if it is built in
+/// the same directory.  If the executable cannot be found, return an
 /// empty string.
-///
+/// @brief Find a named executable.
 #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 );
+                               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;
+    // If the path is absolute (and it usually is), call FindProgramByName to
+    // allow it to try platform-specific logic, such as appending a .exe suffix
+    // on Windows. Don't do this if we somehow have a relative path, because
+    // we don't want to go searching the PATH and accidentally find an unrelated
+    // version of the program.
+    if (Result.isAbsolute()) {
+      Result = sys::Program::FindProgramByName(Result.str());
+      if (!Result.empty())
+        return Result;
+    }
   }
 
-  return sys::Program::FindProgramByName(ExeName);
+  return sys::Path();
 }