I've shied away from ArrayRef'izing CompilerInvocation::CreateFromArgs
in this commit because that is a less localized change.

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This compiles cleanly with lldb/lld/clang-tools-extra/llvm.

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This is a precursor to moving to std::unique_ptr.

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Summary:
This is an alternative to http://llvm-reviews.chandlerc.com/D2475
suggested by Chandler.

Reviewers: chandlerc, rnk, dblaikie

CC: cfe-commits, earthdok

Differential Revision: http://llvm-reviews.chandlerc.com/D2478

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The big changes are:
- Deleting Driver/(Arg|Opt)*
- Rewriting includes to llvm/Option/ and re-sorting
- 'using namespace llvm::opt' in clang::driver
- Fixing the autoconf build by adding option everywhere

As discussed in the review, this change includes using directives in
header files.  I'll make follow up changes to remove those in favor of
name specifiers.

Reviewers: espindola

Differential Revision: http://llvm-reviews.chandlerc.com/D975

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Part of rdar://13296693


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Also, it was the only reason that `argc` and `argv` were being passed
into createDiagnostics, so remove those parameters and clean up callers.

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Completely automated with sort_includes.py

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defined as an internal software error.  This notifies the driver to report
diagnostics information.
rdar://11951540


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temporary files are removed.
rdar://12282296


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and apparently unused (and since they are untested, they're presumably also
broken).


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the various stakeholders bump up the reference count. In particular,
the diagnostics engine now keeps the DiagnosticOptions object alive.


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Unify Options.td and CC1Options.td, in a first step towards unifying the serialization logic in Frontend and Driver.

Reviewed by Eric, Doug and Chandler, and here: http://llvm.org/reviews/r/7/



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The class name is long enough without the llvm:: added.
Also bring in RefCountedBase and RefCountedBaseVPTR.

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More cleanup after r149798.

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This fixes the FIXMEs in ParseAnalyzeArgs. (Also a
precursor to moving the analyzer into an AST plugin.)

For consistency, do the same with AssemblerInvocation.



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This patch ensures that no passes are deleted from clang, such that the loading
of plugins does not fail because of passes being unavailable.  This increases
the size of the clang binary from 43029853 to 43915291 bytes (around 2%).

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them into the clang namespace.


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GCC -Waddress warns about this but clang doesn't (PR9043).

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This removes the final dependency edge from any lib outside of CodeGen
to core.  As a result we can, and do, trim the dependency on core
from libclang, PrintFunctionNames, the unit tests and c-index-test.
While at it, review and trim other unneeded dependencies.

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-Move the stuff of Diagnostic related to creating/querying diagnostic IDs into a new DiagnosticIDs class.
-DiagnosticIDs can be shared among multiple Diagnostics for multiple translation units.
-The rest of the state in Diagnostic object is considered related and tied to one translation unit.
-Have Diagnostic point to the SourceManager that is related with. Diagnostic can now accept just a
   SourceLocation instead of a FullSourceLoc.
-Reflect the changes to various interfaces.

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r110903 introduced a dependency from Frontend to every library that
declared an Action by introducing Action references that previously
resided in the driver in the file ExecuteCompilerInvocation.cpp.
This patch moves ExecuteCompilerInvocation to a new library named
FrontendTool which is intended to bear these dependencies.

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convoluted and a bit leaky. Now, the Diagnostic object owns its
DiagnosticClient.


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which are used by the error handling functions.


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ExecuteCompilerInvocation in libFrontend.

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for use in reporting diagnostics.
 - We don't want to use the Action's own CompilerInstance, because that is only
   initialized during file processing and I like that invariant.

Also, if ParseArgs returns false then abandon execution.

Also, remove unused PluginASTAction::PrintHelp virtual method.

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worked for C anyway. Also kills the -cc1 options -parse-noop and
-parse-print-callbacks.


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which is the part of the file that contains all of the initial
comments, includes, and preprocessor directives that occur before any
of the actual code. Added a new -print-preamble cc1 action that is
only used for testing.


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