Chris Lattner [Tue, 1 Mar 2011 00:03:48 +0000 (00:03 +0000)]
-fwrapv should turn off the inbounds markers from geps used for pointer
arithmetic. This is part of PR9256, it would be great if someone else
wired up -fno-strict-overflow in the driver to -fwrapv.
Douglas Gregor [Mon, 28 Feb 2011 23:58:31 +0000 (23:58 +0000)]
Refactor the construction of nested-name-specifiers with
source-location information into a NestedNameSpecifierLocBuilder
class, which lives within the AST library and centralize all knowledge
of the format of nested-name-specifier location information here.
Rafael Espindola [Mon, 28 Feb 2011 23:29:45 +0000 (23:29 +0000)]
Don't warn about "clang -use-gold-plugin -c ...". With this users can say
CC="clang -use-gold-plugin" CFLAGS=-emit-llvm ../configure...
and not be hit with a warning for each .c file.
Douglas Gregor [Mon, 28 Feb 2011 22:42:13 +0000 (22:42 +0000)]
Teach Sema::CheckTypenameType to use nested-name-specifiers with
source-location information. We don't actually preserve this
information in any of the resulting TypeLocs (yet), so it doesn't
matter.
Douglas Gregor [Mon, 28 Feb 2011 20:01:57 +0000 (20:01 +0000)]
Push nested-name-specifier source location information into
UnresolvedLookupExpr and UnresolvedMemberExpr.
Also, improve the computation that checks whether the base of a member
expression (either unresolved or dependent-scoped) is implicit. The
previous check didn't cover all of the cases we use in our
representation, which threw off source-location information for these
expressions (which, in turn, caused some breakage in libclang's token
annotation).
objc IRGen for Next runtime message API.
The prototype for objc_msgSend() is technically variadic -
`id objc_msgSend(id, SEL, ...)`.
But all method calls should use a prototype that matches the method,
not the prototype for objc_msgSend itself().
// rdar://9048030
Douglas Gregor [Mon, 28 Feb 2011 18:50:33 +0000 (18:50 +0000)]
Push nested-name-specifier source location information into
CXXDependentScopeMemberExpr, and clean up instantiation of
nested-name-specifiers with dependent template specialization types in
the process.
[analyzer] Migrate NSErrorChecker and DereferenceChecker to CheckerV2.
They cooperate in that NSErrorChecker listens for ImplicitNullDerefEvent events that
DereferenceChecker can dispatch.
ImplicitNullDerefEvent is when we dereferenced a location that may be null.
[analyzer] Introduce "event" mechanism in CheckerManager.
A checker can register as receiver/listener of "events" (basically it registers a callback
with a function getting called with an argument of the event type) and other checkers can
register as "dispatchers" and can pass an event object to all the listeners.
This allows cooperation amongst checkers but with very loose coupling.
Douglas Gregor [Mon, 28 Feb 2011 17:23:35 +0000 (17:23 +0000)]
Eliminate the last remains of TemplateSpecializationTypes with
dependent template names. There is still a lot of redundant code in
TreeTransform to cope with TemplateSpecializationTypes, which I'll
remove in stages.
David Chisnall [Mon, 28 Feb 2011 17:11:43 +0000 (17:11 +0000)]
Make -fobjc-nonfragile-abi and -fgnu-runtime imply -fblocks (unless -fno-blocks is specified), because this combination of flags defines an Objective-C runtime that includes a blocks runtime.
Axel Naumann [Mon, 28 Feb 2011 11:22:50 +0000 (11:22 +0000)]
From Vassil Vassilev:
* Add default implementations (no-op) for ExternalASTSource's pure virtual functions. There are valid use cases that can live with these defaults.
* Move ExternalASTSource's out of line implementations into separate source file.
* Whitespace, forward decl, #include cleanup.
Chandler Carruth [Mon, 28 Feb 2011 07:25:18 +0000 (07:25 +0000)]
Fix a tiny goof in the Driver's logic which caused the explicit presence
of -fexceptions to disably C++ exceptions. The correct code was in the
ObjC branch, this just mirrors that logic on the C++ side of things.
Thanks to John Wiegley for pointing this out.
The previous name was inaccurate as this token in fact appears at
the end of every preprocessing directive, not just macro definitions.
No functionality change, except for a diagnostic tweak.
Anders Carlsson [Mon, 28 Feb 2011 02:27:16 +0000 (02:27 +0000)]
Add a -fcxx-exceptions flag to the frontend, which can be used to enable
C++ exceptions, even when exceptions have been turned off using -fno-exceptions.
Make the -fobjc-exceptions flag do the same thing, but for Objective-C exceptions.
C++ and Objective-C exceptions can also be disabled using -fno-cxx-excptions and
-fno-objc-exceptions.
Ken Dyck [Mon, 28 Feb 2011 02:01:38 +0000 (02:01 +0000)]
Retry r126357. Use CharUnits for the Size and DataSize calculations when
they are known to be exact multiples of the width of the char type. Add a
test case to CodeGen/union.c that would have caught the problem with the
previous attempt. No change in functionality intended.
Chris Lattner [Mon, 28 Feb 2011 01:02:29 +0000 (01:02 +0000)]
make switch condition constant folding much more aggressive, handling
compound statements and break statements. This implements enough to
handle PR9322 and rdar://6970405.
Chris Lattner [Mon, 28 Feb 2011 00:22:07 +0000 (00:22 +0000)]
First tiny step to implementing PR9322: build infrastructure for only emitting the
live case of a switch statement when switching on a constant. This is terribly
limited, but enough to handle the trivial example included. Before we would
emit:
This improves -O0 compile time (less IR to generate and shove through the code
generator) and the clever linux kernel people found a way to fail to build if we
don't do this optimization. This step isn't enough to handle the kernel case
though.
Douglas Gregor [Mon, 28 Feb 2011 00:04:36 +0000 (00:04 +0000)]
When we encounter a dependent template name within a
nested-name-specifier, e.g.,
T::template apply<U>::
represent the dependent template name specialization as a
DependentTemplateSpecializationType, rather than a
TemplateSpecializationType with a dependent TemplateName.
Douglas Gregor [Sun, 27 Feb 2011 22:46:49 +0000 (22:46 +0000)]
Eliminate a silly little Parse/Sema dance when parsing typename
specifiers such as
typename T::template apply<U>
Previously, we would turn T::template apply<U> into a
TemplateSpecializationType. Then, we'd reprocess that
TemplateSpecializationType and turn it into either a
TemplateSpecializationType wrapped in an ElaboratedType (when we could
resolve "apply" to a template declaration) or a
DependentTemplateSpecializationType. We now produce the same ASTs but
without generating the intermediate TemplateSpecializationType.
The end goal here is to avoid generating TemplateSpecializationTypes
with dependent template-names, ever. We're not there yet.
Sean Hunt [Sat, 26 Feb 2011 19:13:13 +0000 (19:13 +0000)]
Implement delegating constructors partially.
This successfully performs constructor lookup and verifies that a
delegating initializer is the only initializer present.
This does not perform loop detection in the initialization, but it also
doesn't codegen delegating constructors at all, so this won't cause
runtime infinite loops yet.
John McCall [Sat, 26 Feb 2011 08:07:02 +0000 (08:07 +0000)]
Pretty up the emission of field l-values and use volatile and TBAA when
loading references as part of that. Use 'char' TBAA when accessing
(immediate!) fields of a may_alias struct; fixes PR9307.
John McCall [Sat, 26 Feb 2011 05:39:39 +0000 (05:39 +0000)]
Provide a bit saying that a builtin undergoes custom type-checking, then
don't let calls to such functions go down the normal type-checking path.
Test this out with __builtin_classify_type and __builtin_constant_p.
Ted Kremenek [Fri, 25 Feb 2011 22:00:40 +0000 (22:00 +0000)]
Enhance scan-build to print out available analyses using new checker registration model.
This isn't totally complete. Right now scan-build uses some heuristics to determine
which checkers are enabled by default, but it cannot always tell which checkers
are not enabled.
Douglas Gregor [Fri, 25 Feb 2011 20:49:16 +0000 (20:49 +0000)]
Push nested-name-specifier source location information into
DependentScopeDeclRefExpr. Plus, give NestedNameSpecifierLoc == and !=
operators, since we're going to need 'em elsewhere.
Chandler Carruth [Fri, 25 Feb 2011 19:41:05 +0000 (19:41 +0000)]
Remove the FIXME I introduced last night, and pull the logic for
marking selected overloads into the callers. This allows a few callers
to skip it altogether (they would have anyways because they weren't
interested in successful overloads) or defer until after further checks
take place much like the check required for PR9323 to avoid marking
unused copy constructors.
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