llvm-svn: 171707

If a token follows directly on an escaped newline, the escaped newline
is stored with the token. Since we re-layout escaped newlines, we need
to treat them just like normal whitespace - thus, we need to increase
the whitespace-length of the token, while decreasing the token length
(otherwise the token length contains the length of the escaped newline
and we double-count it while indenting).

llvm-svn: 171706

This fixes llvm.org/PR14823.

Before:
    local_state->SetString(prefs::kApplicationLocale, parent_local_state
                                ->GetString(prefs::kApplicationLocale));
After:
    local_state->SetString(
        prefs::kApplicationLocale,
        parent_local_state->GetString(prefs::kApplicationLocale));

llvm-svn: 171705

llvm-svn: 171704

llvm-svn: 171703

llvm-svn: 171702

llvm-svn: 171701

Using added LLVM functionality in r171698. This works in GDB for member
variable pointers but not member function pointers. See the LLVM commit and
GDB bug 14998 for details.

Un-xfailing cases in the GDB 7.5 test suite will follow.

llvm-svn: 171699

This works fine with GDB for member variable pointers, but GDB's support for
member function pointers seems to be quite unrelated to
DW_TAG_ptr_to_member_type. (see GDB bug 14998 for details)

llvm-svn: 171698

Remove # from the beginning and end of def names. The # is a paste operator and should only be used with something to paste on either side.

llvm-svn: 171697

llvm-svn: 171696

Revert r171140. We don't actually need to support #NAME. Because NAME by itself is interpreted just fine.

llvm-svn: 171695

llvm-svn: 171694

llvm-svn: 171693

llvm-svn: 171692

through as a reference rather than a pointer. There is always *some*
implementation of this available, so this simplifies code by not having
to test for whether it is available or not.

Further, it turns out there were piles of places where SimplifyCFG was
recursing and not passing down either TD or TTI. These are fixed to be
more pedantically consistent even though I don't have any particular
cases where it would matter.

llvm-svn: 171691

This was (somewhat distressingly) only caught be the ocaml bindings
tests...

llvm-svn: 171690

llvm-svn: 171689

and make its comments doxygen comments.

llvm-svn: 171688

follow the conding conventions regarding enumerating a set of "kinds" of
things.

llvm-svn: 171687

longer would violate any dependency layering and it is in fact an
analysis. =]

llvm-svn: 171686

llvm-svn: 171685

Patch by Elior Malul!

llvm-svn: 171684

rather than doing it ourselves. This reflects the API changes in r171681.

llvm-svn: 171683

a TargetMachine to construct (and thus isn't always available), to an
analysis group that supports layered implementations much like
AliasAnalysis does. This is a pretty massive change, with a few parts
that I was unable to easily separate (sorry), so I'll walk through it.

The first step of this conversion was to make TargetTransformInfo an
analysis group, and to sink the nonce implementations in
ScalarTargetTransformInfo and VectorTargetTranformInfo into
a NoTargetTransformInfo pass. This allows other passes to add a hard
requirement on TTI, and assume they will always get at least on
implementation.

The TargetTransformInfo analysis group leverages the delegation chaining
trick that AliasAnalysis uses, where the base class for the analysis
group delegates to the previous analysis *pass*, allowing all but tho
NoFoo analysis passes to only implement the parts of the interfaces they
support. It also introduces a new trick where each pass in the group
retains a pointer to the top-most pass that has been initialized. This
allows passes to implement one API in terms of another API and benefit
when some other pass above them in the stack has more precise results
for the second API.

The second step of this conversion is to create a pass that implements
the TargetTransformInfo analysis using the target-independent
abstractions in the code generator. This replaces the
ScalarTargetTransformImpl and VectorTargetTransformImpl classes in
lib/Target with a single pass in lib/CodeGen called
BasicTargetTransformInfo. This class actually provides most of the TTI
functionality, basing it upon the TargetLowering abstraction and other
information in the target independent code generator.

The third step of the conversion adds support to all TargetMachines to
register custom analysis passes. This allows building those passes with
access to TargetLowering or other target-specific classes, and it also
allows each target to customize the set of analysis passes desired in
the pass manager. The baseline LLVMTargetMachine implements this
interface to add the BasicTTI pass to the pass manager, and all of the
tools that want to support target-aware TTI passes call this routine on
whatever target machine they end up with to add the appropriate passes.

The fourth step of the conversion created target-specific TTI analysis
passes for the X86 and ARM backends. These passes contain the custom
logic that was previously in their extensions of the
ScalarTargetTransformInfo and VectorTargetTransformInfo interfaces.
I separated them into their own file, as now all of the interface bits
are private and they just expose a function to create the pass itself.
Then I extended these target machines to set up a custom set of analysis
passes, first adding BasicTTI as a fallback, and then adding their
customized TTI implementations.

The fourth step required logic that was shared between the target
independent layer and the specific targets to move to a different
interface, as they no longer derive from each other. As a consequence,
a helper functions were added to TargetLowering representing the common
logic needed both in the target implementation and the codegen
implementation of the TTI pass. While technically this is the only
change that could have been committed separately, it would have been
a nightmare to extract.

The final step of the conversion was just to delete all the old
boilerplate. This got rid of the ScalarTargetTransformInfo and
VectorTargetTransformInfo classes, all of the support in all of the
targets for producing instances of them, and all of the support in the
tools for manually constructing a pass based around them.

Now that TTI is a relatively normal analysis group, two things become
straightforward. First, we can sink it into lib/Analysis which is a more
natural layer for it to live. Second, clients of this interface can
depend on it *always* being available which will simplify their code and
behavior. These (and other) simplifications will follow in subsequent
commits, this one is clearly big enough.

Finally, I'm very aware that much of the comments and documentation
needs to be updated. As soon as I had this working, and plausibly well
commented, I wanted to get it committed and in front of the build bots.
I'll be doing a few passes over documentation later if it sticks.

Commits to update DragonEgg and Clang will be made presently.

llvm-svn: 171681

llvm-svn: 171680

[ObjCARC Debug Message] - Added debug message when fuse a retain/autorelease pair in ObjCARCContract::ContractAutorelease.

llvm-svn: 171679

[ObjCARC Debug Message] - Added debug message when we zap a matching retain/autorelease pair in ObjCARCOpt::OptimizeReturns.

llvm-svn: 171678

[ObjCARC Debug Message] - Added debug message when we erase ARC calls with null since they are no-ops.

llvm-svn: 171677

[ObjCARC Debug Message] - Added debug message when we add a nounwind keyword to a function which can not throw.

llvm-svn: 171676

[ObjCARC Debug Message] - Added debug message when we add a tail keyword to a function which can never be passed stack args.

llvm-svn: 171675

llvm-svn: 171674

Added debug statement to ObjCARC when we replace objc_autorelease(x) with objc_release(x) when x is otherwise unused.

llvm-svn: 171673

Added 2x Debug statements to ObjCARC that log when we handle the two undefined pointer-to-weak-pointer is NULL cases by replacing the given call inst with an undefined value.

The reason that there are two cases is that the first case handles the unary cases and the second the binary cases.

llvm-svn: 171672

is actually used by a few Linux distributions

llvm-svn: 171671

Added debug message in ObjCARC when we remove a no-op cast which has only special semantic meaning in the frontend and thus in the optimizer can be deleted.

llvm-svn: 171670

Added debug message to ObjCARC when we transform an objc_autoreleaseReturnValue => objc_autorelease due to its operand not being used as a return value.

llvm-svn: 171669

Fix suffix handling for parsing and printing of cvtsi2ss, cvtsi2sd, cvtss2si, cvttss2si, cvtsd2si, and cvttsd2si to match gas behavior.

cvtsi2* should parse with an 'l' or 'q' suffix or no suffix at all. No suffix should be treated the same as 'l' suffix. Printing should always print a suffix. Previously we didn't parse or print an 'l' suffix.
cvtt*2si/cvt*2si should parse with an 'l' or 'q' suffix or not suffix at all. No suffix should use the destination register size to choose encoding. Printing should not print a suffix.

Original 'l' suffix issue with cvtsi2* pointed out by Michael Kuperstein.

llvm-svn: 171668

these ideas don't get lost

llvm-svn: 171667

If we find an unexpected closing brace, we must not stop parsing, as
we'd otherwise not layout anything beyond that point.

If we find a structural error on the highest level we'll not re-indent
anyway, but we'll still want to format within unwrapped lines.

Needed to introduce a differentiation between an expected and unexpected
closing brace.

llvm-svn: 171666