Nirav Dave cf83621dcd [X86] Improve code size on X86 segment moves
Moves of a value to a segment register from a 16-bit register is
equivalent to one from it's corresponding 32-bit register. Match gas's
behavior and rewrite instructions to the shorter of equivalent forms.

Reviewers: rnk, ab

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D23166

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@278031 91177308-0d34-0410-b5e6-96231b3b80d8
2016-08-08 18:01:04 +00:00
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