[PATCH] D43353: [X86] Add phony registers for high halves of E[A-D]X, E[SD]I, E[BS]P and EIP

[Matthias Braun via Phabricator via llvm-commits]

MatzeB added a comment.

This should be a good thing! Among other things it should also allow us to switch register mask operands from physical registers to register units.

However we should double check the effect of this change on peak memory use and compilation time.


Repository:
  rL LLVM

https://reviews.llvm.org/D43353