Added a new ProgramPoint: PostPurgeDeadSymbols.  This new program point distinguishes between the cases when we just evaluated the transfer function of a Stmt* (PostStmt) or performed a load (PostLoad).  This solves a caching bug observed in a recent bug report.

llvm-svn: 52443

llvm-svn: 52429

llvm-svn: 52426

Patch by David Chisnall!

llvm-svn: 52422

Patch by Filipe Cabecinhas

llvm-svn: 52417

llvm-svn: 52403

llvm-svn: 52402

llvm-svn: 52400

llvm-svn: 52399

llvm-svn: 52398

llvm-svn: 52389

llvm-svn: 52388

llvm-svn: 52387

Split static analysis page into two pages: a high-level information page (with quick download links) and a usage page.

llvm-svn: 52386

Color <h3> light blue, <h2> a dark grey.

llvm-svn: 52385

llvm-svn: 52384

which made it work.

llvm-svn: 52382

Fix indentation of class declarations in ExprCXX.h

llvm-svn: 52380

llvm-svn: 52379

clang as a Release build.

The big change is that all AST nodes (subclasses of Stmt) whose children are
Expr* store their children as Stmt* or arrays of Stmt*. This is to remove
strict-aliasing warnings when using StmtIterator. None of the interfaces of any
of the classes have changed (except those with arg_iterators, see below), as the
accessor methods introduce the needed casts (via cast<>). While this extra
casting may seem cumbersome, it actually adds some important sanity checks
throughout the codebase, as clients using StmtIterator can potentially overwrite
children that are expected to be Expr* with Stmt* (that aren't Expr*). The casts
provide extra sanity checks that are operational in debug builds to catch
invariant violations such as these.

For classes that have arg_iterators (e.g., CallExpr), the definition of
arg_iterator has been replaced. Instead of it being Expr**, it is an actual
class (called ExprIterator) that wraps a Stmt**, and provides the necessary
operators for iteration. The nice thing about this class is that it also uses
cast<> to type-checking, which introduces extra sanity checks throughout the
codebase that are useful for debugging.

A few of the CodeGen functions that use arg_iterator (especially from
OverloadExpr) have been modified to take begin and end iterators instead of a
base Expr** and the number of arguments. This matches more with the abstraction
of iteration. This still needs to be cleaned up a little bit, as clients expect
that ExprIterator is a RandomAccessIterator (which we may or may not wish to
allow for efficiency of representation).

This is a fairly large patch. It passes the tests (except CodeGen/bitfield.c,
which was already broken) on both a Debug and Release build, but it should
obviously be reviewed.

llvm-svn: 52378

llvm-svn: 52376

llvm-svn: 52375

Add color diagnostics from scan-build, and indicate the number of bugs found (if any).

llvm-svn: 52372

llvm-svn: 52370

llvm-svn: 52367

llvm-svn: 52366

llvm-svn: 52362

llvm-svn: 52359

Move NSString.m test case from Analysis-Apple to Analysis.  The test case now works on all platforms.

llvm-svn: 52354

llvm-svn: 52349

llvm-svn: 52348

llvm-svn: 52346

llvm-svn: 52344

Moved CFDate.m from test/Analysis-Apple to test/Analysis, and added the necessary declarations from Foundation.h to CFDate.m so that the test case can be exercised on all platforms.

llvm-svn: 52343

llvm-svn: 52337

Patch by Nikita Zhuk!

llvm-svn: 52336

This fixes use of alloca on 64-bit systems.

llvm-svn: 52334

qualifier in the lvalue, and changes lvalue loads/stores to honor 
the volatile flag.  Places which need some further attention are marked 
with FIXMEs.

Patch by Cédric Venet.

llvm-svn: 52264

llvm-svn: 52256

llvm-svn: 52255