ARM.

Fixes PR7310.

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Extend __builtin_shufflevector to expose the full power of the llvm shufflevector instruction.  This means it can now be used for vector truncation and concatenation.  This will be used for the ARM NEON implementation.


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 - We actually pretend that we have two separate types for LLVM assembly/bitcode because we need to use the standard suffixes with LTO ('clang -O4 -c t.c' should generate 't.o').

It is now possible to do something like:
  $ clang -emit-llvm -S t.c -o t.ll ... assorted other compile flags ...
  $ clang -c t.ll -o t.o ... assorted other compile flags ...
and expect that the output will be almost* identical to:
  $ clang -c t.c -o t.o ... assorted other compile flags ...
because all the target settings (default CPU, target features, etc.) will all be initialized properly by the driver/frontend.

*: This isn't perfect yet, because in practice we will end up running the optimization passes twice. It's possible to get something equivalent out with a well placed -mllvm -disable-llvm-optzns, but I'm still thinking about the cleanest way to solve this problem more generally.

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and 'llvm-dis' is:  $ clang -cc1 -emit-llvm    FOO.bc -o -
and 'opt' is, e.g.:
  $ clang -cc1 -emit-llvm -O3 -o FOO.opt.ll FOO.ll
and 'llc' is, e.g.:
  $ clang -cc1 -S -o - FOO.ll

The nice thing about using the backend tools this way is that they are guaranteed to exactly match how the compiler generates code (for example, setting the same backend options).

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 - These inputs follow an abbreviated execution path, but are still worth handling by FrontendAction so they reuse all the other clang -cc1 features.

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Frontend: Move some initialization from CompilerInstance to FrontendAction, to parallel what is done for AST inputs.

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create modules which have target data strings.

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Frontend: Add CodeGenOptions::SimplifyLibCalls, and eliminate LangOptions argument to BackendConsumer.

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type of rhs need be compared to setter's argument and
not the getter type. Fixes radar 8062778


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an existing ir for load of a bock variable. This cannot be
done across basic blocks.
Fixes radar 8064140.


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Catch free()s on non-regions and regions known to be not from malloc(), by checking the symbol type and memory space.



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created temporary. Use own initialized entity for copied in block
variables.


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TODO: add remainder of builtins to CGBuiltin, add code to SemaChecking to validate constants.


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constructor into an extension warning into the error that C++98 requires.


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or block-pointer type by removing the qualifiers parameter.  Introduce a
method to perform semantic checking when adding qualifiers to a type.



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a member template, and you try to call the member template with an explicit
template argument.  See PR7247 

For example, this downgrades the error to a warning in:

template<typename T> struct set{};
struct Value {
    template<typename T>
    void set(T value) {
    }
};
void foo() {
    Value v;
    v.set<double>(3.2);  // Warning here.
}



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llvm-gcc enabled this couple of weeks ago.


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This is never null, but the associated type might be.



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When deciding whether reinterpret_cast casts away constness we need to look at array qualifiers. Fixes rdar://problem/8018292.

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I just implemented.



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class object in blocks and carry it to IRGen.



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No functionality change yet.



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was given.  Remove some unnecessary accounting from BlockScopeInfo.  Handle
typedef'ed function types until such time as we decide not.



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arguments after translation, instead of the -cc1 level arguments.

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added as the last output step, instead of just hacking it into the link step.
 - Among other things, this fixes dSYM generation when using multiple -arch options.

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setting up block's descriptor. This is on going work to
support c++ specific issues in setting up blocks
various APIs.


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moves us further.

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the case where we pick up block arguments from a typedef.  Save the block
signature as it was written, and preserve same through PCH.



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