Make BuiltinType::getName return a StringRef and introduce BuiltinType::getNameAsCString
to get a const char* if necessary.

This avoids unnecessary conversions when we want to use the result of getName as
a StringRef.

Part of rdar://10796159

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@156227 91177308-0d34-0410-b5e6-96231b3b80d8
Use raw_ostream in TypePrinter and eliminate uses of temporary std::strings.

Part of rdar://10796159

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@156228 91177308-0d34-0410-b5e6-96231b3b80d8
Revert r156141 (making RecursiveASTVisitor data recursive).  It is causing clang to blow up in memory usage on -O2 when compiling itself,
which is leading to swapping in some cases when it didn't before.  We need to see if we can make this change
without leading to a massive compile-time bloat.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@156229 91177308-0d34-0410-b5e6-96231b3b80d8
A conversion operator in a base class shouldn't hide another conversion operator
in the same class, even if they convert to the same type. Fixes PR12712.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@156247 91177308-0d34-0410-b5e6-96231b3b80d8
Revert r156142, "[libclang] Bring back BodyIndexer::TraverseCXXOperatorCallExpr which"

It caused test/Index/index-many-call-ops.cpp to fail in stage2 c-index-test on selfhosting i686-cygwin and x86_64-linux since r156229 (Reverting making RecursiveASTVisitor data recursive).

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@156253 91177308-0d34-0410-b5e6-96231b3b80d8
Simple typo fix (syntex to syntax).  Fixes PR12735

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@156259 91177308-0d34-0410-b5e6-96231b3b80d8
Put the availability warnings in a group.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@156261 91177308-0d34-0410-b5e6-96231b3b80d8
Split mergeAvailabilityAttr out of handleAvailabilityAttr. This is important
for having a uniform logic for adding attributes to a decl. This in turn
is needed to fix the FIXME:

  // FIXME: This needs to happen before we merge declarations. Then,
  // let attribute merging cope with attribute conflicts.
  ProcessDeclAttributes(S, NewFD, D,
                        /*NonInheritable=*/false, /*Inheritable=*/true);

The idea is that mergeAvailabilityAttr will become a method. Once attributes
are processed before merging, it will be called from handleAvailabilityAttr to
handle multiple attributes in one decl:

void f(int) __attribute__((availability(ios,deprecated=3.0),
                           availability(ios,introduced=2.0)));

and from SemaDecl.cpp to handle multiple decls:

void f(int) __attribute__((availability(ios,deprecated=3.0)));
void f(int) __attribute__((availability(ios,introduced=2.0)));

As a bonus, use the new structure to diagnose incompatible availability
attributes added to different decls (see included testcases).

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@156269 91177308-0d34-0410-b5e6-96231b3b80d8
[analyzer] Reduce parallel code paths in SimpleSValBuilder::evalBinOpNN, and handle mixed-type operations more generally.

The logical change is that the integers in SymIntExprs may not have the same type as the symbols they are paired with. This was already the case with taint-propagation expressions created by SValBuilder::makeSymExprValNN, but I think those integers may never have been used. SimpleSValBuilder should be able to handle mixed-integer-type SymIntExprs fine now, though, and the constraint managers were already being defensive (though not entirely correct). All existing tests pass.

The logic in evalBinOpNN has been simplified so that conversion is done as late as possible. As a result, most of the switch cases have been reduced to do the minimal amount of work, delegating to another case when they can by substituting ConcreteInts and (as before) reversing the left and right arguments when useful.

Comparisons require special handling in two places (building SymIntExprs and evaluating constant-constant operations) because we don't /know/ the best type for comparing the two values. I've approximated the rules in Sema [C99 6.3.1.8]  but it'd be nice to refactor Sema's actual algorithm into ASTContext.

This is also groundwork for handling mixed-type constraints better than we do now.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@156270 91177308-0d34-0410-b5e6-96231b3b80d8
Detecting illegal instantiations of abstract types when using a function-style cast.  Fixed PR12658.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@156271 91177308-0d34-0410-b5e6-96231b3b80d8
Merge remote-tracking branch 'upstream/master'