It's not necessary to do rounding for alloca operations when the requested
alignment is equal to the stack alignment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40004 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Support/SystemUtils.cpp b/lib/Support/SystemUtils.cpp
new file mode 100644
index 0000000..afa0d7e
--- /dev/null
+++ b/lib/Support/SystemUtils.cpp
@@ -0,0 +1,58 @@
+//===- SystemUtils.cpp - Utilities for low-level system tasks -------------===//
+//
+// 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 contains functions used to do a variety of low-level, often
+// system-specific, tasks.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/Support/Streams.h"
+#include "llvm/Support/SystemUtils.h"
+#include "llvm/System/Process.h"
+#include "llvm/System/Program.h"
+#include <ostream>
+using namespace llvm;
+
+bool llvm::CheckBitcodeOutputToConsole(std::ostream* stream_to_check,
+ bool print_warning) {
+ if (stream_to_check == cout.stream() &&
+ sys::Process::StandardOutIsDisplayed()) {
+ if (print_warning) {
+ cerr << "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 );
+ Result.eraseComponent();
+ if (!Result.isEmpty()) {
+ Result.appendComponent(ExeName);
+ if (Result.canExecute())
+ return Result;
+ }
+
+ return sys::Program::FindProgramByName(ExeName);
+}