[PATCH] X86: Correct Defs for instructions that imp-def both an A-register and EFLAGS.

[Ahmed Bougacha]

Hi Jakob, all,

Title says all: this patch corrects a problem where x86 instructions
that implicitly define both an A-register (RAX, EAX, ..) and EFLAGS
were declared as only defining EFLAGS, because the outer
  let Defs = [EFLAGS]
in the various multiclasses overrides the
  let Defs = [areg]
in BinOpAI.

Add EFLAGS to BinOpAIs, and move all instances outside "let Defs".

Thanks,

-- Ahmed Bougacha
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