Implement the old API in terms of the new one. This simplifies the
implementation on Windows which can now re-use the self_process's once
initialization.

llvm-svn: 171330

Patch by Brad Smith.

llvm-svn: 171329

a union. These don't actually work for by-value function arguments, and
MSVC warns if they exist even while (we hope) it aligns the argument
correctly due to the other union member.

This means MSVC will miss out on optimizations based on the alignment of
the buffer, but really, there aren't that many for x86 and MSVC is
likely not doing a great job of optimizing LLVM and Clang anyways.

llvm-svn: 171328

llvm-svn: 171327

The new code is an improved copy of the code I deleted from Analysis/Loads.cpp.
One less compute-constant-gep-offset implementation. yay :)

llvm-svn: 171326

recommit r171298 (add support for PHI nodes to ObjectSizeOffsetVisitor). Hopefully with bugs corrected now.

llvm-svn: 171325

llvm-svn: 171321

This adds AlignedCharArray<Alignment, Size>. A templated struct that contains
a member named buffer of type char[Size] that is aligned to Alignment.

llvm-svn: 171319

This reverts r171298. Breaks clang selfhost.

llvm-svn: 171318

You can now configure from the command line using:
-DLIBCXX_CXX_ABI=libsupc++
-DLIBCXX_LIBSUPCXX_INCLUDE_PATHS="path;path

Also documents how to build on Linux.

llvm-svn: 171316

Also add an assert to avoid confusion in the code where is known that C1 <= C2.

llvm-svn: 171310

Fixes PR14723.

Patch by Sami Liedes!

llvm-svn: 171309

llvm-svn: 171308

llvm-svn: 171307

llvm-svn: 171306

llvm-svn: 171305

llvm-svn: 171304

llvm-svn: 171303

llvm-svn: 171302

llvm-svn: 171301

llvm-svn: 171300

llvm-svn: 171299

llvm-svn: 171298

llvm-svn: 171295

llvm-svn: 171294

I actually made a think-o when writing this FIXME since I wrote LangRef
but it should actually have said WritingAnLLVMBackend.

llvm-svn: 171293

Fix a truly odd namespace qualifier that was flat out wrong in the
process. The fully qualified namespace would have been
llvm::sys::TimeValue, llvm::TimeValue makes no sense.

llvm-svn: 171292

llvm-svn: 171291

llvm-svn: 171290

The coding style used here is not LLVM's style because this is modeled
after a Boost interface and thus done in the style of a candidate C++
standard library interface. I'll probably end up proposing it as
a standard C++ library if it proves to be reasonably portable and
useful.

This is just the most basic parts of the interface -- getting the
process ID out of it. However, it helps sketch out some of the boiler
plate such as the base class, derived class, shared code, and static
factory function. It also introduces a unittest so that I can
incrementally ensure this stuff works.

However, I've not even compiled this code for Windows yet. I'll try to
fix any Windows fallout from the bots, and if I can't fix it I'll revert
and get someone on Windows to help out. There isn't a lot more that is
mandatory, so soon I'll switch to just stubbing out the Windows side and
get Michael Spencer to help with implementation as he can test it
directly.

llvm-svn: 171289

LLVM libraries. Also, clean up the doxygen and formatting of the
existing interfaces.

With this change I'm calling the existing interface "legacy" because I'd
like to replace it with something much better. My end goal is to expose
a common set of interfaces for inspecting various properties of
a process, and implementations to expose those both for the current
process and for child processes. This will also expose more rich
interfaces for spawning and controling a subprocess, notably to use
system calls like wait3 and wait4 where available and gather detailed
resource usage stats about the subprocess.

My plan (discussed with Michael Spencer on IRC) is to base this loosely
around the proposed Boost.Process interface, but to implement
a relatively small subset of that functionality based around the needs
of LLVM, Clang, the Clang driver, etc.

llvm-svn: 171285

promoting a store in a loop.  This was noticed when working on PR14753,
but isn't directly related.

llvm-svn: 171281

PR14753

llvm-svn: 171279

Fixed version of r171273.

llvm-svn: 171278

Original commit message:
[ubsan] Don't suggest casting to unsigned for unsigned unary minus overflow.

llvm-svn: 171277

inlined.

Patch by Saleem Abdulrasool, reviewed by Michael Spencer and Richard Smith.

llvm-svn: 171276

phabricator code review site easier with libc++.

llvm-svn: 171275

llvm-svn: 171274

llvm-svn: 171273

llvm-svn: 171272