Objective-C: Provide fixit suggestions when class object
is accessed via accessing 'isa' ivar to use
object_getClass/object_setClass apis.
// rdar://13503456
Sam Panzer [Thu, 28 Mar 2013 19:07:11 +0000 (19:07 +0000)]
Implemented a warning when an input several bitwise operations are
likely be implicitly truncated:
* All forms of Bitwise-and, bitwise-or, and integer multiplication.
* The assignment form of integer addition, subtraction, and exclusive-or
* The RHS of the comma operator
* The LHS of left shifts.
Thomas Schwinge [Thu, 28 Mar 2013 19:02:48 +0000 (19:02 +0000)]
Rename LinuxDistro to Distro.
The concept of such a software distribution is not tied to the Linux kernel;
for example Debian GNU/Linux, Debian GNU/Hurd, and Debian GNU/kFreeBSD all
share the same source packages and generally the same user-space configuration.
Ted Kremenek [Thu, 28 Mar 2013 18:43:15 +0000 (18:43 +0000)]
Add CFG logic to create a conditional branch for modeling static initializers.
This is an optional variant of the CFG. This allows analyses to model whether
or not a static initializer has run, e.g.:
static Foo x = bar();
For basic dataflow analysis in Sema we will just assume that the initializer
always runs. For the static analyzer we can use this branch to accurately
track whether or not initializers are on.
This patch just adds the (opt-in) functionality to the CFG. The
static analyzer still needs to be modified to adopt this feature.
Fixed handling of comments before preprocessor directives.
Comments before preprocessor directives used to be stored with InPPDirective
flag set, which prevented correct comment splitting in this case. Fixed by
flushing comments before switching on InPPDirective. Added a new test and fixed
one of the existing tests.
Anton Yartsev [Thu, 28 Mar 2013 16:10:38 +0000 (16:10 +0000)]
[analyzer] For now assume all standard global 'operator new' functions allocate memory in heap.
+ Improved test coverage for cplusplus.NewDelete checker.
Hal Finkel [Thu, 28 Mar 2013 08:38:53 +0000 (08:38 +0000)]
Add support for gcc-compatible -mmfcrf -mno-mfcrf PPC options
gcc provides -mmfcrf and -mno-mfcrf for controlling what we call
the mfocrf target feature. Also, PPC is now making use of the
static function AddTargetFeature used by the Mips Driver code.
Richard Smith [Thu, 28 Mar 2013 03:27:52 +0000 (03:27 +0000)]
For -Wignored-qualifiers, don't warn on qualifiers which we acquire via a
typedef. Also don't warn on the _Atomic type specifier, just on the _Atomic
type qualifier.
Richard Smith [Thu, 28 Mar 2013 00:03:10 +0000 (00:03 +0000)]
Fold together the two implementations of 6.7.3p2 in SemaType. Fix two bugs, each of which was only present in one version:
* Give the right diagnostic for 'restrict' applied to a non-pointer, non-reference type.
* Don't reject 'restrict' applied indirectly to an Objective-C object pointer type (eg, through template instantiation).
When we are consuming the current token just to enter a new token stream, we push
the current token in the back of the stream so that we get it again.
Unfortunately this had the effect where if the current token is a code-completion one,
we would code-complete once during consuming it and another time after the stream ended.
Fix this by making sure that, in this case, ConsumeAnyToken() will consume a code-completion
token without invoking code-completion.
Richard Smith [Wed, 27 Mar 2013 23:20:25 +0000 (23:20 +0000)]
UBSan: Don't diagnose inf/nan conversions between floating-point types. It's far from clear whether these have undefined behavior, and these checks are helping no-one. Keep the double->float overflow warnings, though, since those are useful in practice, even though it's unclear whether such operations have defined behavior.
Jordan Rose [Wed, 27 Mar 2013 18:10:35 +0000 (18:10 +0000)]
[analyzer] Use evalBind for C++ new of scalar types.
These types will not have a CXXConstructExpr to do the initialization for
them. Previously we just used a simple call to ProgramState::bindLoc, but
that doesn't trigger proper checker callbacks (like pointer escape).
Anna Zaks [Wed, 27 Mar 2013 17:35:58 +0000 (17:35 +0000)]
[analyzer] Ensure that the node NilReceiverBRVisitor is looking for is not reclaimed
The visitor should look for the PreStmt node as the receiver is nil in the PreStmt and this is the node. Also, tag the nil
receiver nodes with a special tag for consistency.
Douglas Gregor [Wed, 27 Mar 2013 16:47:18 +0000 (16:47 +0000)]
<rdar://problem/13509689> Introduce -module-file-info option that provides information about a particular module file.
This option can be useful for end users who want to know why they
ended up with a ton of different variants of the "std" module in their
module cache. This problem should go away over time, as we reduce the
need for module variants, but it will never go away entirely.
Douglas Gregor [Wed, 27 Mar 2013 12:51:49 +0000 (12:51 +0000)]
<rdar://problem/13317030> Consider using directives when performing unqualified name lookup into declarations contexts represented by the qualified-id but not in the actual scope hierarchy.
[lib/Headers] Break the module import cycle between _Builtin_intrinsics.sse and _Builtin_intrinsics.sse2
Module "sse" implicitly exports module "sse2".
This is bad because we also have module "sse2" export module "sse" (as intended) so we end up with a cycle
in the module import graph:
1. sse2 -> (also imports) sse
2. sse -> (also imports) sse2
To eliminate the cycle remove 2.; importing module "sse2" will also import module "sse", but just importing
module "sse" will not also import module "sse2".
[modules] Before marking the module imported macros as ambiguous, check if this is a case where
the system macro uses a not identical definition compared to a macro from the clang headers.
For example (these come from different modules):
\#define LONG_MAX __LONG_MAX__ (clang's limits.h)
\#define LONG_MAX 0x7fffffffffffffffL (system's limits.h)
in which case don't mark them ambiguous to avoid the "ambiguous macro expansion" warning.
[modules] Re-enable the "ambiguous expansion of macro" warning.
Also update "test/Modules/macros.c" to test modified semantics:
-When there is an ambiguous macro, expand using the latest introduced version, not the first one.
-#undefs in submodules cause the macro to not be exported by that submodule, it doesn't cause
undefining of macros in the translation unit that imported that submodule.
This reduces macro namespace interference across modules.
Richard Smith [Wed, 27 Mar 2013 00:22:47 +0000 (00:22 +0000)]
PR15597: Fix a confusion between the implicit exception specification and the
uninstantiated exception specification when a special member within a class
template is both defaulted and given an exception specification on its first
declaration.
Chad Rosier [Wed, 27 Mar 2013 00:14:35 +0000 (00:14 +0000)]
If we're unable to create the TargetMachine, then just quit producing the
backend output; there's no need to report a fatal error. This reverts r178042.
Part of rdar://13295753 and rdar://13401547
Ted Kremenek [Wed, 27 Mar 2013 00:02:21 +0000 (00:02 +0000)]
Split "incomplete implementation" warnings for ObjC into separate warnings.
Previously all unimplemented methods for a class were grouped under
a single warning, with all the unimplemented methods mentioned
as notes. Based on feedback from users, most users would like
a separate warning for each method, with a note pointing back to
the original method declaration.
Chad Rosier [Tue, 26 Mar 2013 23:41:30 +0000 (23:41 +0000)]
[driver] Do not generate crash diagnostics if the compilation command failed
to execute as the crash will surely reoccur while generating the diagnostics.
rdar://13362359
Douglas Gregor [Tue, 26 Mar 2013 23:36:30 +0000 (23:36 +0000)]
<rdar://problem/13267210> Ensure that Sema::CompareReferenceRelationship returns consistent results with invalid types.
When Sema::RequireCompleteType() is given a class template
specialization type that then fails to instantiate, it returns
'true'. On subsequent invocations, it can return false. Make sure that
this difference doesn't change the result of
Sema::CompareReferenceRelationship, which is expected to remain stable
while we're checking an initialization sequence.
Reid Kleckner [Tue, 26 Mar 2013 18:30:28 +0000 (18:30 +0000)]
[ms-cxxabi] Give the MS inheritance attributes a base class
Required making a handful of changes to the table generator. Also adds
an unspecified inheritance attribute. This opens the path for us to
apply these attributes to C++ records implicitly.
Michael Liao [Tue, 26 Mar 2013 17:52:08 +0000 (17:52 +0000)]
Add PRFCHW intrinsic support
- Add head 'prfchwintrin.h' to define '_m_prefetchw' which is mapped to
LLVM/clang prefetch builtin
- Add option '-mprfchw' to enable PRFCHW feature and pre-define '__PRFCHW__'
macro
[Preprocessor/Modules] Separate the macro directives kinds into their own MacroDirective's subclasses.
For each macro directive (define, undefine, visibility) have a separate object that gets chained
to the macro directive history. This has several benefits:
-No need to mutate a MacroDirective when there is a undefine/visibility directive. Stuff like
PPMutationListener become unnecessary.
-No need to keep extra source locations for the undef/visibility locations for the define directive object
(which is the majority of the directives)
-Much easier to hide/unhide a section in the macro directive history.
-Easier to track the effects of the directives across different submodules.
Reid Kleckner [Tue, 26 Mar 2013 16:56:59 +0000 (16:56 +0000)]
[ms-cxxabi] Mangle vector types
Summary:
The only vector types a user can pass from MSVC code to clang code are
the ones from *mmintrin.h, so we only have to match the MSVC mangling
for these types. MSVC mangles the __m128 family of types as tag types,
which we match. For other vector types, we emit a unique tag type
mangling that won't match anything produced by MSVC.
Evgeniy Stepanov [Tue, 26 Mar 2013 13:44:29 +0000 (13:44 +0000)]
Fix uninitialized read of CalleeWithThisReturn.
CalleeWithThisReturn can be left initialized if HasThisReturn() is false.
This change reverses the order of checks in EmitFunctionEpilog such that
CalleeWithThisReturn is only examined when it has a meaningful value.
Chandler Carruth [Tue, 26 Mar 2013 03:45:48 +0000 (03:45 +0000)]
Manually specify the link dependencies. Turns out that all the work on
LLVMBuild stuff didn't actually provide a single place for dependencies,
it just added a third place.
Richard Smith [Tue, 26 Mar 2013 01:15:19 +0000 (01:15 +0000)]
Implement special-case name lookup for inheriting constructors: member
using-declarations with names which look constructor-like are interpreted as
constructor names.
projects / clang / log