which didn't appear ready for prime time.

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forward decls and have names into the dwarf accelerator types table.

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multiple dies per function and support C++ basenames.

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Add additional checking to ensure that MachineMemOperands are never set to null, which can happen in weird circumstances where target intrinsic hooks are implemented incorrectly.


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More of rdar://9704684

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require this tool to resolve (currently).

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Start of rdar://9704684

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consistency with other targets.

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test/CodeGen/X86/lsr-loop-exit-cond.ll: Try to appease linux and freebsd bots to specify explicit -mtriple=x86_64-darwin.

I guess it expects -relocation-model=pic.

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instruction lower optimization" in the pre-RA scheduler.

The optimization, rather the hack, was done before MI use-list was available.
Now we should be able to implement it in a better way, perhaps in the
two-address pass until a MI scheduler is available.

Now that the scheduler has to backtrack to handle call sequences. Adding
artificial scheduling constraints is just not safe. Furthermore, the hack
is not taking all the other scheduling decisions into consideration so it's just
as likely to pessimize code. So I view disabling this optimization goodness
regardless of PR11314.


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Note: These patterns only works in some cases because
many times the load sd node is bitcasted from a load
node of a different type.


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determine if the value is negative and flip the sign accordingly.
rdar://10422026

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options to llvm-build, so the all-targets etc. components are defined properly.

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handle defining the "magic" target related components (like native,
nativecodegen, and engine).
 - We still require these components to be in the project (currently in
   lib/Target) so that we have a place to document them and hopefully make it
   more obvious that they are "magic".

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change the generated library .a file name once we fully switch over, but
simplifies how we treat these targets without requiring more special casing
(since their library group name and the codegen library name currently map to
the same "llvm-config" style component name).

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 - Gives us a place to hang target specific metadata (like whether the target has a JIT).

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The TII.foldMemoryOperand hook preserves implicit operands from the
original instruction.  This is not what we want when those implicit
operands refer to the register being spilled.

Implicit operands referring to other registers are preserved.

This fixes PR11347.

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rdar://10422955


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Currently checks alignment and killing stores on a power of 2 boundary as this is likely
to trim the size of the earlier store without breaking large vector stores into scalar ones.

Fixes <rdar://problem/10140300>


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rdar://10418009

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enough to have this be useful.

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 - Also, fix a refacto that left extra "all" component in list (this is now
   defined in the groups explicitly)
 - Reapply of r143879 now that Make should see needed deps.

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