This fixes the issue noted in PR10251 where early tail dup of bbs with
indirectbr would cause a bb to be duplicated into a loop preheader
and then into its predecessors, creating phi nodes with identical
operands just before register allocation.

This helps with jsinterp.o size (__TEXT goes from 163568 to 126656)
and a bit with performance 1.005x faster on sunspider (jits still enabled).

The result on webkit with the jit disabled is more significant: 1.021x faster.

llvm-svn: 134372

HasIndirectbr variable to be just that. No functionality change.

llvm-svn: 134371

llvm-svn: 134370

A split point inserted in a block with a landing pad successor may be
hoisted above the call to ensure that it dominates all successors. The
code that handles the rest of the basic block must take this into
account.

I am not including a test case, it would be very fragile. PR10244 comes
from building clang with exceptions enabled.

llvm-svn: 134369

generated from the swig docstring features instead of blindly applying the
cleanup action for all input lines.

llvm-svn: 134368

This is what both the ABI and clang says.

llvm-svn: 134367

llvm-svn: 134366

llvm-svn: 134364

llvm-svn: 134361

Add post-processing step to remove the trailing blank lines from the docstrings of lldb.py.

llvm-svn: 134360

a file or socket. We now make a getsockopt call to check if the fd is a socket.

Also, the previous logic in the GDB communication needs to watch for success
with an error so we can deal with EAGAIN and other normal "retry" error codes.

llvm-svn: 134359

makes one of the tests actually mean something (as the string 'add' will
always appear in the output of this file).

llvm-svn: 134358

_only_ in the resulting stream, not in the error objects (lldb_private::Error).
lldb_private::Error objects should always just have an error string with no 
terminating newline characters or periods.

Fixed an issue with GDB remote packet detection that could end up deadlocking
if a full packet wasn't received in one chunk. Also modified the packet 
checking function to properly toss one or more bytes when it detects bad
data. 

llvm-svn: 134357

a file descriptor.

llvm-svn: 134355

desired result based on the comments in the file.

llvm-svn: 134354

llvm-svn: 134353

llvm-svn: 134352

llvm-svn: 134351

llvm-svn: 134350

llvm-svn: 134349

llvm-svn: 134348

llvm-svn: 134347

llvm-svn: 134346

llvm-svn: 134345

llvm-svn: 134344

llvm-svn: 134343

llvm-svn: 134342

llvm-svn: 134341

llvm-svn: 134340

llvm-svn: 134339

llvm-svn: 134338

llvm-svn: 134337

llvm-svn: 134336

llvm-svn: 134335

llvm-svn: 134334

llvm-svn: 134333

llvm-svn: 134332

llvm-svn: 134331

individual cases, while hard coding less about registers in use.

llvm-svn: 134330

commands as a result.

llvm-svn: 134329