Change greater than to greater than or equal so that an identical sized store to the same offset is treated as completing overwriting.

llvm-svn: 161857

llvm-svn: 161856

structure of how we're building concrete tools as well as tooling
infrastructure as part of the Clang project.

This documentation is definitely still rough. If anyone can improve it,
flesh it out, or help structure it in a more natural way, please, help!
=] This is not my forte, and patches here are more than welcome!

llvm-svn: 161855

llvm-svn: 161854

llvm-svn: 161853

and allow some optimizations to turn conditional branches into unconditional.
This commit adds a simple control-flow optimization which merges two consecutive
basic blocks which are connected by a single edge. This allows the codegen to
operate on larger basic blocks.

rdar://11973998

llvm-svn: 161852

llvm-svn: 161851

No functionality change.

llvm-svn: 161832

llvm-svn: 161831

-fcatch-undefined-behavior. Don't try to fit 34 different flags
into 32 bits. Also, don't use 32-bit signed left shifts for this.

llvm-svn: 161830

returns 32. This change mirrors the corresponding code in
SmallDenseMap::shrink_and_clear().

llvm-svn: 161829

llvm-svn: 161828

tablegen code, found by -fcatch-undefined-behavior. I would appreciate if
someone more familiar with the NEON code could point me in the direction of how
to write a test for this. We appear to have essentially no test coverage
whatsoever for these builtins.

llvm-svn: 161827

llvm-svn: 161826

llvm-svn: 161825

return to the same directory.

llvm-svn: 161823

llvm-svn: 161822

The autorelease pool has not been implemented completely: we were adding
the autoreleased symbols to the state, but never looking at them. Until
we have a complete implementation, remove the overhead and comment out
the unused code.

llvm-svn: 161821

to set/get/remove the RefBinding.

No functional change here. Having these setter and getter methods will
make it much easier when replacing the underlining representation of
RefBindings (I just went through the exercise). It makes the code more
readable as well.

llvm-svn: 161820

llvm-svn: 161819

This allows us to store type info for non-symbolic regions.

No functionality change.

llvm-svn: 161811

While there is now some duplication between SimpleCall and the CXXInstanceCall
sub-hierarchy, this is much better than copy-and-pasting the devirtualization
logic shared by both instance methods and destructors.

An unfortunate side effect is that there is no longer a single CallEvent type
that corresponds to "calls written as CallExprs". For the most part this is a
good thing, but the checker callback eval::Call still takes a CallExpr rather
than a CallEvent (since we're not sure if we want to allow checkers to
evaluate other kinds of calls). A mistake here will be caught by a cast<> in
CheckerManager::runCheckersForEvalCall.

No functionality change.

llvm-svn: 161809

Virtual base regions are never layered, so simply stripping them off won't
necessarily get you to the correct casted class. Instead, what we want is
the same logic for evaluating dynamic_cast: strip off base regions if possible,
but add new base regions if necessary.

llvm-svn: 161808

Add a roundToIntegral method to APFloat, which can be parameterized over various rounding modes.  Use this to implement SelectionDAG constant folding of FFLOOR, FCEIL, and FTRUNC.

llvm-svn: 161807

Change the test case, too. 

llvm-svn: 161806

llvm-svn: 161805

llvm-svn: 161804

LICM uses AliasSet information to hoist and sink instructions. However, other passes, such as LoopRotate
may invalidate its AliasSet because SSAUpdater does not update the AliasSet properly.
This patch teaches SSAUpdater to notify AliasSet that it made changes.
The testcase in PR12901 is too big to be useful and I could not reduce it to a normal size. 

rdar://11872059 PR12901

llvm-svn: 161803

Currently, if GetLocation reports that it did not find a valid pointer (this is the case for volatile load/stores),
we ignore the result. This patch adds code to handle the cases where we did not obtain a valid pointer.

rdar://11872864  PR12899

llvm-svn: 161802

These tests weren't actually being run before (missing ':' after CHECK).

llvm-svn: 161800

This can occur with multiple inheritance, which jumps from one parent to
the other, and with virtual inheritance, since virtual base regions always
wrap the actual object and can't be nested within other base regions.

This also exposed some incorrect logic for multiple inheritance: even if B
is known not to derive from C, D might still derive from both of them.

llvm-svn: 161798

...and /do/ strip CXXBaseObjectRegions when casting to a virtual base class.

This allows us to enforce the invariant that a CXXBaseObjectRegion can always
provide an offset for its base region if its base region has a known class
type, by only allowing virtual bases and direct non-virtual bases to form
CXXBaseObjectRegions.

This does mean some slight problems for our modeling of dynamic_cast, which
needs to be resolved by finding a path from the current region to the class
we're trying to cast to.

llvm-svn: 161797

llvm-svn: 161796

return 0x0 as the read value instead of uninitialized
stack data so we get consistent behavior from the
emulator.
<rdar://problem/12058770>

llvm-svn: 161795

It never does anything when running 'make check', and it get's in the
way of updating live intervals in 2-addr.

The hook was originally added to help form IT blocks in Thumb2 code
before register allocation, but the pass ordering has changed since
then, and we run if-conversion after register allocation now.

When the MI scheduler is enabled, there will be no less than two
schedulers between 2-addr and Thumb2ITBlockPass, so this hook is
unlikely to help anything.

llvm-svn: 161794

llvm-svn: 161793

llvm-svn: 161792

forgot to set it as being instantiation-dependent as well as being type- and
value-dependent.

llvm-svn: 161791

rdar://9877866

llvm-svn: 161790

This change is to be enabled in clang.

rdar://9877866

llvm-svn: 161789