1) Do forward copy propagation. This makes it easier to estimate the cost of the
   instruction being sunk.
2) Break critical edges on demand, including cases where the value is used by
   PHI nodes.
Critical edge splitting is not yet enabled by default.

llvm-svn: 114227

llvm-svn: 114226

of a binary expression, continue on and parse the right-hand side of
the binary expression anyway, but don't call the semantic actions to
type-check. Previously, we would see the error and then, effectively,
skip tokens until the end of the statement. 

The result should be more useful recovery, both in the normal case
(we'll actually see errors beyond the first one in a statement), but
it also helps code completion do a much better job, because we do
"real" code completion on the right-hand side of an invalid binary
expression rather than completing with the recovery completion. For
example, given

  x = p->y

if there is no variable named "x", we can still complete after the p->
as a member expression. Along the recovery path, we would have
completed after the "->" as if we were in an expression context, which
is mostly useless.

llvm-svn: 114225

method definitions instead of crashing in code gen.
Fixes radar 8421082.

llvm-svn: 114223

llvm-svn: 114222

legacy asm printer uses instructions of the form, "mov r0, r0, lsl #3", while
the MC-instruction printer uses the form "lsl r0, r0, #3". The latter mnemonic
is correct and preferred according the ARM documentation (A8.6.98). The former
are pseudo-instructions for the latter.

llvm-svn: 114221

llvm-svn: 114220

llvm-svn: 114219

llvm-svn: 114218

llvm-svn: 114217

llvm-svn: 114215

llvm-svn: 114212

llvm-svn: 114211

llvm-svn: 114210

llvm-svn: 114209

Fixes radar 8437253.

llvm-svn: 114207

llvm-svn: 114206

llvm-svn: 114205

llvm-svn: 114204

check for NULL and visit the InitListExpr we have if there is no
syntactic form.

llvm-svn: 114203

llvm-svn: 114202

This fixes rdar://8396318.

llvm-svn: 114201

llvm-svn: 114200

llvm-svn: 114199

"inexact" result.

llvm-svn: 114198

llvm-svn: 114197

llvm-svn: 114196

llvm-svn: 114195

llvm-svn: 114194

Rewrite linker arguments to use libclang_rt.cc_kext.a
instead of gcc-specific libcc_kext.a

Resolves Radar 7808495

llvm-svn: 114193

Add a -ftrapv-handler= option which allows a handler to invoke instead of simply aborting when a signed operation overflows.  This mirrors the (GCC-incompatible) behaviour from clang 1.0 and 1.1 when -ftrapv was specified, but allows the handler to be defined for each compilation unit.

llvm-svn: 114192

instruction lowering.

llvm-svn: 114191

What a weird instruction.

llvm-svn: 114190

llvm-svn: 114189

use inside lldb (lldb_private::StreamFile, and lldb_private::StreamString).

llvm-svn: 114188

This mainly prevents failures and/or crashes when multiple processes try to read/write the same PCH file. (rdar://8392711&8294781); suggestion & review by Daniel!

llvm-svn: 114187

needs to find some libraries, which may require searching the directories given
by LIBRARY_PATH on curiously configured systems.  So pass on LIBRARY_PATH.

llvm-svn: 114186

llvm-svn: 114185

llvm-svn: 114184

llvm-svn: 114183