[PATCH] D56255: [ARM] Size reduce teq to eors

[Sam Parker via Phabricator via llvm-commits]

samparker created this revision.
samparker added reviewers: t.p.northover, rovka, dmgreen.
Herald added subscribers: kristof.beyls, javed.absar.

Add t2TEQrr to the map of instructions with can be reduced down into a T1 instruction. This is a special case because TEQ just sets the CPSR and doesn't write to a GPR, which is not the case for EOR. So, we need to ensure that the EOR can write to the first operand.


https://reviews.llvm.org/D56255

Files:
  lib/Target/ARM/Thumb2SizeReduction.cpp
  test/CodeGen/Thumb2/teq-size-reduce.ll
  test/CodeGen/Thumb2/thumb2-teq2.ll

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