creators to tell us whether something needs GC barriers.
No functionality change.

llvm-svn: 138581

out-of-sync how a file is compiled. Patch by Matthias Kleine!

llvm-svn: 138580

llvm-svn: 138578

Teach -Wunreachable-code about dead code caused by macro expansions.  This should suppress false positives resulting from 'assert' and friends.

llvm-svn: 138576

chain to a proper search.

llvm-svn: 138574

search in ASTReader::ReadPreprocessedEntities().

llvm-svn: 138572

llvm-svn: 138571

as in @class foo, bar. More cleanup to follow.

llvm-svn: 138567

-fapple-kext.
Fixes <rdar://problem/10013310>. Reverts <rdar://problem/7809940>.

llvm-svn: 138564

redeclarations of a particular entity would occur in source
order. Friend declarations that occur within class templates (or
member classes thereof) do not follow this, nor would modules. Big
thanks to Erik Verbruggen for reducing this problem from the Very
Large Qt preamble testcase he found.

llvm-svn: 138557

given selector, rather than walking the chain backwards. Teach its
visitor how to merge multiple result sets into a single result set,
combining the results of selector lookup in several different modules
into a single result set.

llvm-svn: 138556

[analyzer] Move the leak bugs from CFRefCount to RetainReleaseChecker, with a level of indirection to handle GC vs. non-GC.

llvm-svn: 138538

llvm-svn: 138535

Patch by Chris Cudmore!

llvm-svn: 138533

(These bug types may have just been leaked before...!)

llvm-svn: 138532

[analyzer] MacOSKeychainAPIChecker: Add the custom BugReport visitor(which highlights the allocation site) to all the relevant reports within the checker.

llvm-svn: 138531

Because Checkers live for an entire translation unit, this persists summary caches across multiple code bodies and avoids repeated initialization (but probably at the cost of memory). This removes the last references from RetainReleaseChecker to CFRefCount.

llvm-svn: 138529

statement initializer makes safe assumption when a substatement 
is encounterred (with a fix me).

llvm-svn: 138528

llvm-svn: 138526

llvm-svn: 138510

llvm-svn: 138508

llvm-svn: 138506

llvm-svn: 138498

llvm-svn: 138497

table when serializing an AST file. This was a holdover from the days
before chained PCH, and is a complete waste of time and storage
now. It's a good thing it's useless, because I have no idea how I
would have implemented MaterializeVisibleDecls efficiently in the
presence of modules.

llvm-svn: 138496

llvm-svn: 138493

which supports both pre-order and post-order traversal via a visitor
mechanism. Use this depth-first search with a post-order traversal to
give predictable ordering semantics when walking all of the lexical
declarations in the translation unit.

Eventually, module imports will occur in the source code rather than
at the beginning, and we'll have to revisit this walk.

llvm-svn: 138490

llvm-svn: 138489

[analyzer] MacOSKeychainAPIChecker: Provide reacher diagnostic trace by pointing to the allocation site when reporting a leak.

llvm-svn: 138479

llvm-svn: 138477

[analyzer] Copy GC mode setting from CFRefCount to RetainReleaseChecker in preparation for getting rid of CFRefCount.

This is a little hacky for now but will get better once we decide the best way to handle this.

llvm-svn: 138476

llvm-svn: 138475

[analyzer] Allow checker writes to specify that no region should be accosiated with the report. (Useful when we report an error on endOfPath or deadSymbols, when the range of the last expression might have nothing to do with the error.)

llvm-svn: 138474

llvm-svn: 138470

This is a very small regression (actually introduced in r138309) because it won't catch leaks of objects passed by reference to CFDictionaryCreate (they're considered to have escaped and are ignored). If this is important we can put in a specific eval::Call to restore the functionality.

llvm-svn: 138464

module DAG-based lookup scheme. This required some reshuffling, so
that each module stores its own mapping from DeclContexts to their
lexical and visible sets for those DeclContexts (rather than one big
"chain"). 

Overall, this allows simple qualified name lookup into the translation
unit to gather results from multiple modules, with the lookup results
in module B shadowing the lookup results in module A when B imports A.

Walking all of the lexical declarations in a module DAG is still a
mess; we'll end up walking the loaded module list backwards, which
works fine for chained PCH but doesn't make sense in a DAG. I'll
tackle this issue as a separate commit.

llvm-svn: 138463

[analyzer] Slightly clean up the fix in 138432, so that it doesn't depend on the relative ordering of path-sensitive and path-insensitive checks. Still not ideal, but I think a real fix would require infrastructure that doesn't exist yet.

llvm-svn: 138462

Thread safety: Fix a few typos in last commit -- use LockID instead of Lock in comments and start a couple methods with a lowercase letter

llvm-svn: 138460

llvm-svn: 138451

Reset FirstID (first diagnostic's file ID) to allow for invocations of the VerifyDiagnosticsClient on several input files.

llvm-svn: 138434