about pairs of AA::Location's instead of looking for MemDep's
"Def" predicate.  This is more powerful and general, handling
memset/memcpy/store all uniformly, and implementing PR8701 and
probably obsoleting parts of memcpyoptimizer.

This also fixes an obscure bug with init.trampoline and i8
stores, but I'm not surprised it hasn't been hit yet.  Enhancing
init.trampoline to carry the size that it stores would allow
DSE to be much more aggressive about optimizing them.

llvm-svn: 120406

llvm-svn: 120405

Fixes PR8573.

llvm-svn: 120404

llvm-svn: 120402

Harden CGDebugInfo::CreateType() a bit for cases where we couldn't generate type info for its component types

llvm-svn: 120401

llvm-svn: 120398

llvm-svn: 120397

trap the serialized preprocessing records (macro definitions, macro
instantiations, macro definitions) from the generation of the
precompiled preamble, then replay those when walking the list of
preprocessed entities. This eliminates a bug where clang_getCursor()
wasn't able to find preprocessed-entity cursors in the preamble.

llvm-svn: 120396

llvm-svn: 120395

llvm-svn: 120394

llvm-svn: 120393

clang_getCursor() via -cursor-at=??? and CINDEXTEST_EDITING is set in
the environment. This mirrors how we test code completion and
source-loading in the presence of this environment variable.

llvm-svn: 120392

llvm-svn: 120391

precompiled preamble as the "main" source file's file ID within the
source manager. This makes compiling with a precompiled preamble
produce the same source locations as when compiling without the
precompiled preamble; prior to this change, we ended up with different
file IDs for source locations within the precompiled preamble
vs. those after the precompiled preamble, even for entities (e.g.,
preprocessing entities) in the same file.

llvm-svn: 120390

llvm-svn: 120389

unbreaks test/Transforms/InstCombine/invariant.ll which was broken by r120382.
This is a fix-forward to do what I think Chris intended.

llvm-svn: 120388

Moved the code in ClangUserExpression that set up & ran the thread plan with timeouts, and restarting with all threads into a utility function in Process.  This required a bunch of renaming. 

Added a ThreadPlanCallUserExpression that differs from ThreadPlanCallFunction in that it holds onto a shared pointer to its ClangUserExpression so that can't go away before the thread plan is done using it.

Fixed the stop message when you hit a breakpoint while running a user expression so it is more obvious what has happened.

llvm-svn: 120386

This analysis is going to run immediately after LiveIntervals. It will stay
alive during register allocation and keep track of user variables mentioned in
DBG_VALUE instructions.

When the register allocator is moving values between registers and the stack, it
is very hard to keep track of DBG_VALUE instructions. We usually get it wrong.
This analysis maintains a data structure that makes it easy to update DBG_VALUE
instructions.

llvm-svn: 120385

a non-dependent type.

llvm-svn: 120384

llvm-svn: 120383

is trivially dead, since these have side effects.  This makes the
(misnamed) MemoryUseIntrinsic class dead, so remove it.

llvm-svn: 120382

llvm-svn: 120381

llvm-svn: 120380

llvm-svn: 120379

remove an actively-wrong comment.

llvm-svn: 120378

It can be seriously improved, but at least now it isn't intertwined
with the other logic.

llvm-svn: 120377

Type.cpp:1000: warning: control reaches end of non-void function

llvm-svn: 120376

llvm-svn: 120375

Merge context-sensitive.ll -> simple.ll and upgrade it.

llvm-svn: 120374

merging more into other larger .ll files, filecheckizing along the way.

llvm-svn: 120373

llvm-svn: 120372

llvm-svn: 120371

queried location doesn't overlap the source, and add a testcase.

llvm-svn: 120370

able to match this yet.

llvm-svn: 120369

contains "ref".

Enhance DSE to use a modref query instead of a store-specific hack
to generalize the "ignore may-alias stores" optimization to handle
memset and memcpy.

llvm-svn: 120368

using special $-variables from expressions.

(lldb) expr $rip

These variables are available for reading and
writing.

llvm-svn: 120367

and which are pseudos.

llvm-svn: 120366

llvm-svn: 120365

llvm-svn: 120364

stores, fix and add a testcase.

llvm-svn: 120363