[PATCH] [CodeGen] Add iterator ranges for the MVT::SimpleValueType enum.

[Pete Cooper]

Hi Ahmed

LGTM with just one change:

+      return mvt_range((MVT::SimpleValueType)0, MVT::LAST_VALUETYPE);

Please add FIRST_VALUETYPE to MVT so that you can use enums on the above line instead of 0.  I doubt MVT will ever start from anything other than 0, but its just best to avoid there ever being an issue.

Thanks,
Pete
> On Jan 6, 2015, at 1:06 PM, Ahmed Bougacha <ahmed.bougacha at gmail.com> wrote:
> 
> And another, post-holiday, ping!
> 
> 
> http://reviews.llvm.org/D6537
> 
> Files:
>  include/llvm/CodeGen/MachineValueType.h
>  lib/Target/X86/X86ISelLowering.cpp
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