LabelDecl and LabelStmt.  There is a 1-1 correspondence between the
two, but this simplifies a bunch of code by itself.  This is because
labels are the only place where we previously had references to random
other statements, causing grief for AST serialization and other stuff.

This does cause one regression (attr(unused) doesn't silence unused
label warnings) which I'll address next.

This does fix some minor bugs:
1. "The only valid attribute " diagnostic was capitalized.
2. Various diagnostics printed as ''labelname'' instead of 'labelname'
3. This reduces duplication of label checking between functions and blocks.

Review appreciated, particularly for the cindex and template bits.

llvm-svn: 125733

llvm-svn: 125724

by kremenek.

llvm-svn: 125687

llvm-svn: 125645

llvm-svn: 125642

llvm-svn: 125637

  NilArgChecker
  CFNumberCreateChecker
  NSAutoreleasePoolChecker
  CFRetainReleaseChecker
  ClassReleaseChecker

llvm-svn: 125636

  CastToStructChecker
  FixedAddressChecker
  PointerArithChecker
  PointerSubChecker

llvm-svn: 125612

llvm-svn: 125611

llvm-svn: 125599

   CStringChecker
   ChrootChecker
   MallocChecker
   PthreadLockChecker
   StreamChecker
   UnreachableCodeChecker

MallocChecker creates implicit dependencies between checkers and needs to be handled differently.

llvm-svn: 125598

llvm-svn: 125566

llvm-svn: 125565

-Update tablegen files for checkers, use the tablegen class name for the checker class name.
-Update ClangSACheckersProvider to not look into hidden checker packages.

llvm-svn: 125560

StackAddrLeakChecker
ObjCAtSyncChecker
UnixAPIChecker
MacOSXAPIChecker

The rest have/create implicit dependencies between checkers and need to be handled differently.

llvm-svn: 125559

llvm-svn: 125548

for all compiler invocations.

llvm-svn: 125514

llvm-svn: 125507

-Checkers will be defined in the tablegen file 'Checkers.td'.
-Apart from checkers, we can define checker "packages" that will contain a collection of checkers.
-Checkers can be enabled with -analyzer-checker=<name> and disabled with -analyzer-disable-checker=<name> e.g:
	Enable checkers from 'cocoa' and 'corefoundation' packages except the self-initialization checker:
	-analyzer-checker=cocoa -analyzer-checker=corefoundation -analyzer-disable-checker=cocoa.SelfInit
-Introduces CheckerManager and CheckerProvider. CheckerProviders get the set of checker names to enable/disable and
 register them with the CheckerManager which will be the entry point for all checker-related functionality.

Currently only the self-initialization checker takes advantage of the new mechanism.

llvm-svn: 125503

[analyzer] Remove ManagerRegistry which is not used. In the future we may load analyzer plugins dynamically but
registration through static constructors should be avoided.

llvm-svn: 125502

[analyzer] Move include/clang/StaticAnalyzer/AnalysisConsumer.h -> lib/StaticAnalyzer/Frontend/AnalysisConsumer.h since
FrontendActions.cpp is the only user.

llvm-svn: 125501

llvm-svn: 125500

[analyzer] Introduce libclangStaticAnalyzerFrontend and move Checkers/AnalysisConsumer.cpp into Frontend lib.

llvm-svn: 125499

llvm-svn: 125497

Fix edge case where we don't cull warnings in IdempotentOperationsChecker due to incomplete analysis of loops.

llvm-svn: 125495

Use 'BitVector' instead of SmallPtrSet<CFGBlock*> in IdempotentOperationsChecker.  No real functionality change.

llvm-svn: 125494

llvm-svn: 125443

Weaken the ObjCSelfInitChecker to only warn when one calls an 'init' method within an 'init' method.  This is a temporary stop gap to avoid false positives while we investigate how to make it smarter.

llvm-svn: 125427

static analyzer: Also invalidate instance variables of a receiver in a message expression, just as we do with parameters.

Fixes <rdar://problem/8725041>.

llvm-svn: 125422

Don't emit a dead store for '++' operations unless it occurs with a return statement.  We've never seen any other cases that were real bugs.

Fixes <rdar://problem/6962292>.

llvm-svn: 125419

I also sorted the tools/driver dependencies since their order no
longer matters.

llvm-svn: 125417

llvm-svn: 125415

llvm-svn: 125396

llvm-svn: 125395

llvm-svn: 125362

llvm-svn: 125275

llvm-svn: 125262

This reduces memory usage of the analyzer on sqlite by another 5%.

llvm-svn: 125260

Split 'include/clang/StaticAnalyzer' into 'include/clang/StaticAnalyzer/Core' and 'include/clang/StaticAnalyzer/Checkers'.

This layout matches lib/StaticAnalyzer, which corresponds to two StaticAnalyzer libraries.

llvm-svn: 125251

llvm-svn: 125217