llvm-svn: 90281

In SourceManager::isBeforeInTranslationUnit, if we are trying to compare two source locations with no common ancestor in the include stack, determine order by assuming memory buffers preceed files, and then that FileIDs are created in order.

The later assumption is patently false, but this was already broken -- this situation is conceptually impossible, my feeling is we should fix SourceManager and friends to make it impossible in practice as well. However, we need to fix PR5662 and perhaps some other things involving memory buffers first. In the short term I'm pretty sure this is reliable.

Chris, Argiris, is this going to break anything that wasn't already broken?

llvm-svn: 90280

llvm-svn: 90277

in diagnostics when we fail to open a file.  This allows us to
report things like:

$ clang test.c -I.
test.c:2:10: fatal error: error opening file './foo.h': Permission denied
#include "foo.h"
         ^

llvm-svn: 90276

instead of returning an ambiguous reason.

llvm-svn: 90275

llvm-svn: 90274

"Fixes" PR5645.

llvm-svn: 90272

llvm-svn: 90271

Gets clang-on-clang passing again.

llvm-svn: 90270

- A valno should be set HasRedefByEC if there is an early clobber def in the middle of its live ranges. It should not be set if the def of the valno is defined by an early clobber.
- If a physical register def is tied to an use and it's an early clobber, it just means the HasRedefByEC is set since it's still one continuous live range.
- Add a couple of missing checks for HasRedefByEC in the coalescer. In general, it should not coalesce a vr with a physical register if the physical register has a early clobber def somewhere. This is overly conservative but that's the price for using such a nasty inline asm "feature".

llvm-svn: 90269

llvm-svn: 90268

llvm-svn: 90267

implicit member access to a specific declaration, go ahead and create
it as a DeclRefExpr or a MemberExpr (with implicit CXXThisExpr base) as
appropriate.  Otherwise, create an UnresolvedMemberExpr or
DependentScopeMemberExpr with a null base expression.

By representing implicit accesses directly in the AST, we get the ability
to correctly delay the decision about whether it's actually an instance
member access or not until resolution is complete.  This permits us
to correctly avoid diagnosing the 'problem' of 'MyType::foo()'
where the relationship to the type isn't really known until instantiation.

llvm-svn: 90266

llvm-svn: 90264

llvm-svn: 90263

llvm-svn: 90262

to use it so it at least won't try to access Sema once it is gone.

llvm-svn: 90261

llvm-svn: 90260

llvm-svn: 90258

llvm-svn: 90257

framework omits differentiated edge sources in the case where the labels
are empty strings.

llvm-svn: 90254

llvm-svn: 90253

llvm-svn: 90252

llvm-svn: 90251

Exit the command line into <built-in> instead of going directly from the command line to the input file.

We passed <built-in> on the way in, so we should pass it again on the way out.

llvm-svn: 90250

of a subclass (direct or indirect) of a weak_import root class, emit a weak reference 
for the root class's metaclass (should complete radar 6815425).

llvm-svn: 90249

Clear function specific containers while processing end of a function, even if DW_TAG_subprogram for current function is not found.

llvm-svn: 90247

llvm-svn: 90246

Fix early-return logic in scanReachableSymbols() to match the rest of the recursive logic in the methods of ScanReachableSymbols.

llvm-svn: 90245

llvm-svn: 90244

llvm-svn: 90243

override virtual functions. Also, eliminate a (now redundant) call to
AddOverriddenMethods.

llvm-svn: 90242

common to both parsing and template instantiation, so that we'll find
overridden virtuals for member functions of class templates when they
are instantiated. 

Additionally, factor out the checking for pure virtual functions, so
that it will be executed both at parsing time and at template
instantiation time. 

These changes fix PR5656 (for real), although one more tweak
w.r.t. member function templates will be coming along shortly.

llvm-svn: 90241

We want LiveVariables clients to use methods rather than accessing the
getVarInfo data structure directly. That way it will be possible to change the
LiveVariables representation.

llvm-svn: 90240

ValueDecl, because that isn't always the case in ill-formed
code. Diagnose a common mistake (forgetting to provide a template
argument list for a class template, PR5655) and dyn_cast so that we
handle the general problem of referring to a non-value declaration
gracefully.

llvm-svn: 90239

be defined as pure. Fixes PR5656.

llvm-svn: 90237

llvm-svn: 90236

llvm-svn: 90230

llvm-svn: 90229

Also, add an -ast-from-source option to index-test which allows index-test to
run on source files directly.

llvm-svn: 90223