llvm-svn: 148164

With that, centralize the way we merge visibility, always preferring explicit over
implicit and then picking the most restrictive one.
Fixes pr10113 and pr11690.

llvm-svn: 148163

llvm-svn: 148162

llvm-svn: 148161

that one wants indexing callbacks for function-local symbols as well.

llvm-svn: 148160

get added to the identifier chains as part of deserialization, because
they should not be visible to name lookup.

llvm-svn: 148159

Progress towards making isUsed() reflect whether a declaration is odr-used; don't set isUsed for local variables which are referenced in unevaluated contexts.  Make other code use isReferenced() (which basically indicates that a declaration isn't dead) where appropriate.

I was forced to change test/SemaCXX/linkage.cpp because we aren't actually modeling extern "C" in the AST the way that testcase expects; we were not printing a warning only because we skipped the relevant check.  Someone who actually understands the semantics here should fix that.

llvm-svn: 148158

llvm-svn: 148157

llvm-svn: 148156

The change to SemaTemplateVariadic.cpp improves the typo correction
results in certain situations, while the change to SemaTemplate.cpp
does not change existing behavior.

llvm-svn: 148155

multiple name lookup results in C/Objective-C. Fixes a regression a
caused in r147533, found by Enea Zaffanella!

llvm-svn: 148154

A bug fix involving the updating of path_dst_ptr_to_static_ptr.  Some minor code rearrangement optimizations (putting most likely 'if' first in an if-else series.  And some major optimizations which involve stopping the search prior to an exhaustive walk over the entire tree.  Some of these stops are because an ambiguity is detected earlier.  And some of the short circuiting is due to the information from the bits __diamond_shaped_mask and __non_diamond_repeat_mask.  The stress test checked in last night is now about 28% faster for the B<Width/2, Depth> -O3 case.  I'm still playing with some more optimization possibilities but I'm not sure they will play out.

llvm-svn: 148153

master AST importer imports types.

- First, before importing the definition of a
  Decl from its source, notify the underlying
  importer of the source->destination mapping.
  Especially for anonymous strucutres that are
  otherwise hard to unique in the target AST
  context, this hint is very helpful.

- When deporting a type or Decl from one
  ASTContext to another (deporting occurs in
  the case of moving result types from the
  parser's AST context to the result AST
  context), don't forget their origin if the
  origin is the original debug information.

llvm-svn: 148152

The QQ and QQQQ registers are not 'real', they are pseudo-registers used
to model some vld and vst instructions.

This makes the call clobber lists longer, but I intend to get rid of
those soon.

llvm-svn: 148151

llvm-svn: 148150

llvm-svn: 148149

framework is actually a subframework within a top-level framework. If
so, only infer a module for the top-level framework and then dig out
the appropriate submodule.

This helps us cope with an amusing subframeworks anti-pattern, where
one uses -F <framework>/Frameworks to get direct include access to the
subframeworks of a framework (which otherwise would not be
permitted).

llvm-svn: 148148

llvm-svn: 148147

proactively.

llvm-svn: 148146

debug info, call it anonymous.  This isn't
perfect, because Clang actually considers the
following struct not to be anonymous:
–
struct {
  int x;
  int y;
} g_foo;
-
but DWARF doesn't make the distinction.

llvm-svn: 148145

more information.

llvm-svn: 148144

llvm-svn: 148143

memcmp, strncmp,..) out of Sema and into FunctionDecl so that the logic
could be reused in the analyzer.

llvm-svn: 148142

llvm-svn: 148141

improving the typo correction results in certain situations.

This is also the first typo correction callback conversion to affect
an existing unit test. :)

llvm-svn: 148140

Patch from Jyotsna Verma:

I have made the changes to remove assertions in the Hexagon backend
specific clang driver. Instead of asserting on invalid arch name, it has
been modified to use the default value.

I have changed the implementation of the CPU flag validation for the
Hexagon backend. Earlier, the clang driver performed the check and
asserted on invalid inputs. In the new implementation, the driver passes
the last CPU flag (or sets to "v4" if not specified) to the compiler (and
also to the assembler and linker which perform their own check) instead of
asserting on incorrect values. This patch changes the setCPU function for
the Hexagon backend in clang/lib/Basic/Targets.cpp which causes the
compiler to error out on incorrect CPU flag values.

llvm-svn: 148139

llvm-svn: 148138

llvm-svn: 148137

llvm-svn: 148136

llvm-svn: 148135

Revert r148131, it was committed before it was ready.

llvm-svn: 148134

llvm-svn: 148133

LoopUnswitch: All helper data that is collected during loop-unswitch iterations was moved to separated class (LUAnalysisCache). 

llvm-svn: 148132

llvm-svn: 148131

llvm-svn: 148128

llvm-svn: 148123

llvm-svn: 148118

llvm-svn: 148117

and switches our interceptors to using them instead of the default
vm_allocate-based approach used by mach_override_ptr.

To simplify the code, a fixed memory mapping is used for the allocation pool --
note that we can't mmap an arbitrary chunk of memory, because the shadow memory hasn't been mapped yet
(for the reasons discussed in http://code.google.com/p/address-sanitizer/issues/detail?id=24, we cannot map the shadow earlier)

The patch drops the program startup time from several second to half a second,
which speeds up the execution of ASan tests noticeably.
Because of the virtual memory size occupied by the programs it's hard
to speed up the shutdown time, which would've also helped the tests.

llvm-svn: 148116

Add __asan_mach_override_ptr_custom, which allows to inject a custom memory allocator into mach_override_ptr().

llvm-svn: 148115