Fix for PR14739. It's not safe to fold a load into a call across a store. Thanks to Nick Lewycky for the initial patch.

llvm-svn: 171665

This is coming up again and again on the mailing list and IRC.

llvm-svn: 171656

llvm-svn: 171655

llvm-svn: 171654

Indirect branch in the preheader crashes replaceCongruentIVs.
Fixes rdar://12910141.

llvm-svn: 171653

llvm-svn: 171652

llvm-svn: 171651

llvm-svn: 171650

This currently prints the ELF program headers.

llvm-svn: 171649

llvm-svn: 171648

llvm-svn: 171647

llvm-svn: 171645

Signed-off-by: Renato Golin <renato.golin@linaro.org>
llvm-svn: 171642

To parse # correctly, we need to know whether it is the first token in a
line - we can deduct this either from the whitespace or seeing that the
token is the first in the file - we already calculate this information.
This patch moves the identification of the first token into the
getNextToken method and stores it inside the FormatToken, so the
UnwrappedLineParser can stay independent of the SourceManager.

llvm-svn: 171640

Uses indent 0 for macros for now and resets the indent state to the
level prior to the preprocessor directive.

llvm-svn: 171639

<objc/Protocol.h>. Caused by my recent changes for 
various builtin declarations of objc_msgSendSuper
variety. // rdar://12489098

llvm-svn: 171638

Based on code review feedback for r171604 from Chandler Carruth &
Eric Christopher. Enabled by improvements to LLVM made in r171636.

llvm-svn: 171637

Based on code review feedback in r171604 from Chandler Carruth &
Eric Christopher.

llvm-svn: 171636

A preprocessor directive cannot be started while we're parsing one.

llvm-svn: 171635

Catch some cases I'd missed in r171605 related to unnamed parameters of record
type. This resolves all remaining cases of PR14573 suppression in the GDB 7.5
test suite. Fix to the test suite to follow.

llvm-svn: 171633

A rather egregious example of the grep-style checking of old that I randomly
came across.

llvm-svn: 171631

'clang' to use it as the compiler.

llvm-svn: 171630

Added debug message to ObjCARC when we transform objc_retainAutorelasedReturnValue => objc_retain since the operand to said function is not a return value.

llvm-svn: 171629

Added debug message for ObjCARC when we zap an objc_autoreleaseReturnValue/objc_retainAutoreleasedValue pair.

llvm-svn: 171628

when merging two TBAA tags, pointed out by Nuno.

llvm-svn: 171627

pass into the SelectionDAG itself rather than snooping on the
implementation of that pass as exposed by the TargetMachine. This
removes the last direct client of the ScalarTargetTransformInfo class
outside of the TTI pass implementation.

llvm-svn: 171625

This isn't optimal either but fixes a massive compile time regression from the
attribute uniquing work.

llvm-svn: 171624

Sorry for the noise here, 'make check' doesn't build this code. =/

llvm-svn: 171623

passes to a create-pass function instead of a direct constructor call.

llvm-svn: 171622

interfaces which could be extracted from it, and must be provided on
construction, to a chained analysis group.

The end goal here is that TTI works much like AA -- there is a baseline
"no-op" and target independent pass which is in the group, and each
target can expose a target-specific pass in the group. These passes will
naturally chain allowing each target-specific pass to delegate to the
generic pass as needed.

In particular, this will allow a much simpler interface for passes that
would like to use TTI -- they can have a hard dependency on TTI and it
will just be satisfied by the stub implementation when that is all that
is available.

This patch is a WIP however. In particular, the "stub" pass is actually
the one and only pass, and everything there is implemented by delegating
to the target-provided interfaces. As a consequence the tools still have
to explicitly construct the pass. Switching targets to provide custom
passes and sinking the stub behavior into the NoTTI pass is the next
step.

llvm-svn: 171621

llvm-svn: 171620

llvm-svn: 171619

interface.

llvm-svn: 171618

the ScalarTargetTransformInfo interface.

llvm-svn: 171617

interface rather than the ScalarTargetTransformInterface.

llvm-svn: 171616

VectorTargetTransformInfo into the TargetTransformInfo pass,
implementing them be delegating back out to the two subobjects.

This is the first step to folding the interfaces together and making
TargetTransformInfo a normal analysis pass (specifically an analysis
group which targets can provide target-specific analysis pass
implementations of).

No callers are migrated here, this just stubs out the interface. Next
step will be to migrate all the callers to directly operate on TTI
instead of STTI or VTTI respectively. That will allow replacing the
machinery for delivering TTI without changing every caller at once.

WIP, I promise all the duplicated interfaces will be removed in the end,
this just decouples the steps of the process.

llvm-svn: 171615

values -- that's not required to fix the bug that was cropping up, and
the values selected made the enumeration's underlying type signed and
introduced some warnings. This fixes the -Werror build.

The underlying issue here was that the DenseMapInfo was casting values
completely outside the range of the underlying storage of the
enumeration to the enumeration's type. GCC went and "optimized" that
into infloops and other misbehavior. By providing designated special
values for these keys in the dense map, we ensure they are indeed
representable and that they won't be used for anything else.

It might be better to reuse None for the empty key and have the
tombstone share the value of the sentinel enumerator, but honestly
having 2 extra enumerators seemed not to matter and this seems a bit
simpler. I'll let Bill shuffle this around (or ask me to shuffle it
around) if he prefers it to look a different way.

I also made the switch a bit more clear (and produce a better assert)
that the enumerators are *never* going to show up and are errors if they
do.

llvm-svn: 171614

unused, there were transitive includes needed.

llvm-svn: 171613

llvm-svn: 171612

IR/Attributes: Provide EmptyKey and TombstoneKey in part of enum, as workaround for gcc-4.4 take #2.

I will investigate, later, what was wrong. I am too tired for now.

llvm-svn: 171611