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longer needed as the CFG is fully linearized.


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[Basic] Change DiagnosticBuilder to use a separate status variable to track whether the builder is active.
 - This may seem superflous, but actually this allows the optimizer to more
   easily eliminate the isActive() checks needed by the SemaDiagnosticBuilder
   and DiagnosticBuilder dtors. And by more easily, I mean the current LLVM is
   actually able to do one and not the other. :)

This is good for another 20k code size reduction.

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 - As with DiagnosticBuilder, it is very important that SemaDiagnosticBuilder be
   completely inline to ensure that the compiler can rip it apart and sink it to
   registers.

This is good for another 30k reduction in code size.

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Also check the error message.

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args.

Fixes rdar://11042577

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field. // rdar://11040024



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rdar://10963572


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function templates as well.

A future commit will mangle the added name with the template args
like classes are mangled.

Fixes rdar://10986010

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"struct{template struct{" would fail an assertion.

This assertion failure seems to have gone away somewhere along the line so
here's a test to make sure we don't regress. We still accept some very weird
explicit template 'instantiations' ("template int;", anyone) but at least we're
not asserting/crashing here.

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respectively.

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 - This is much more important than it appears at first glance...

The intended design of DiagnosticBuilder was that it never escape and that all
its members would get lowered to registers by the compiler. By fixing Emit here,
the compiler can completely eliminate the DiagnosticBuilder object and never
need to push those registers back into it.

Unfortunately, Sema has broken DiagnosticBuilder in other ways (by introducing
SemaDiagnosticBuilder), so we don't get the fill impact of this, but it is still
good for 30k reduction in code size. I'll work on fixing the
SemaDiagnosticBuilder problems next.

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constant expressions.


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Previously, only diagnostics thrown by the cc1 process were
actually honoring the diagnostic options given on the command line,
like -Werror.

Reuse the existing code in Frontend currently used for cc1,
adjusting it to not interpret -Wl, linker flags as warnings.

Also fix a faulty test exposed by this change.
It wasn't actually testing anything, and was giving this warning:

clang-3: warning: argument unused during compilation: '-verify'

Which -Werror didn't turn into an error because it was output
by the driver, not the cc1 process, and diagnostic options
weren't parsed by the driver. And you couldn't see the warning
when running the test suite.

Fixes PR12181.
Patch by Dylan Noblesmith <nobled@dreamwidth.org>.



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inlining to be the reverse of their declaration.

This optimizes running time under inlining up to 20% since we do not
re-analyze the utility functions which are usually defined first in the
translation unit if they have already been analyzed while inlined into
the root functions.

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BFS should give slightly better performance. Ex: Suppose, we have two
roots R1 and R2. A callee function C is reachable through both. However,
C is not inlined when analyzing R1 due to inline stack depth limit. With
DFS, C will be analyzed as top level even though it would be analyzed as
inlined through R2. On the other hand, BFS could avoid analyzing C as
top level.

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collecting function Decls.

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AnalysisConsumer.

As a result:
 - We now analyze the C++ methods which are defined within the
class body. These were completely skipped before.

- Ensure that AST checkers are called on functions in the
order they are defined in the Translation unit.

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function.

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powerpc_types and add testing for the (long) double there.



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not used anymore (good thing we are still paying for it!).

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commonly when the diag has been copied).
 - This eliminates a completely spurious call to Emit() which was in
   Sema::Diag(). Sob.

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by ~%.3/~100k in my build -- simply by eliminating the horrible code bloat coming
from the .clear() of the SmallVector<FixItHint>, which does a std::~string, etc.
 - My understanding is we don't ever emit arbitrary numbers of fixits, so I just
   moved us to using a statically sized array like we do for arguments and
   ranges.

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void f () {
  int g (int a, int b=4);
  {
    int g(int a, int b=5);
  }
}

should compile.



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parameter's declaration are ignored when determining the parameter's type.


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at the end of the parameter list.


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