LiveRangeEdit::eliminateDeadDefs() will eventually be used by coalescing,
splitting, and spilling for dead code elimination. It can delete chains of dead
instructions as long as there are no dependency loops.

llvm-svn: 127287

an interface to a local or remote debugging platform. By default each host OS
that supports LLDB should be registering a "default" platform that will be
used unless a new platform is selected. Platforms are responsible for things
such as:
- getting process information by name or by processs ID
- finding platform files. This is useful for remote debugging where there is 
  an SDK with files that might already or need to be cached for debug access.
- getting a list of platform supported architectures in the exact order they
  should be selected. This helps the native x86 platform on MacOSX select the
  correct x86_64/i386 slice from universal binaries.
- Connect to remote platforms for remote debugging
- Resolving an executable including finding an executable inside platform
  specific bundles (macosx uses .app bundles that contain files) and also
  selecting the appropriate slice of universal files for a given platform.

So by default there is always a local platform, but remote platforms can be
connected to. I will soon be adding a new "platform" command that will support
the following commands:
(lldb) platform connect --name machine1 macosx connect://host:port
Connected to "machine1" platform.
(lldb) platform disconnect macosx

This allows LLDB to be well setup to do remote debugging and also once 
connected process listing and finding for things like:
(lldb) process attach --name x<TAB>

The currently selected platform plug-in can now auto complete any available
processes that start with "x". The responsibilities for the platform plug-in
will soon grow and expand.

llvm-svn: 127286

llvm-svn: 127285

llvm-svn: 127284

llvm-svn: 127283

llvm-svn: 127282

llvm-svn: 127278

llvm-svn: 127272

llvm-svn: 127270

llvm-svn: 127269

Make the Objective-C checker look for subclasses of NSString instead of just NSString and NSMutableString.

llvm-svn: 127268

llvm-svn: 127266

llvm-svn: 127265

Patch by Olaf Krzikalla!

llvm-svn: 127264

with this before since none of the register tracking or nightly tests
had unschedulable nodes.

This should probably be refixed with a special default Node that just
returns some "don't touch me" values.

Fixes PR9427

llvm-svn: 127263

llvm-svn: 127262

MSVC 9."

The "fix" was meaningless.

This reverts commit r127245.

llvm-svn: 127260

by using an enumeration rather than a boolean value. No functionality
change.

llvm-svn: 127259

llvm-svn: 127258

varienty of cases. // rdar://9092208

llvm-svn: 127257

llvm-svn: 127256

llvm-svn: 127254

keywords for Objective-C+ and C++0x. 

llvm-svn: 127253

llvm-svn: 127252

Fixed source range for StaticAssertDecl and LinkageSpecDecl. Fixed source range for declarations using postfix types.

llvm-svn: 127251

Since last couple of days, argument number is encoded using 8 bits from line number field in argument's debug info.

llvm-svn: 127250

llvm-svn: 127249

llvm-svn: 127248

Found by inspection.

llvm-svn: 127247

llvm-svn: 127246

llvm-svn: 127245

llvm-svn: 127244

llvm-svn: 127243

llvm-svn: 127242

llvm-svn: 127241

llvm-svn: 127240

Reapply r127073(partially): Introduce $(ECHOPATH) to print DOSish path string on MSYS bash for alternative of $(ECHO).

On mingw and python/w32, lit would not be expected to understand MSYS-style path.

llvm-svn: 127239

llvm-svn: 127238

llvm-svn: 127237

llvm-svn: 127236