[PATCH] D75993: [Target][ARM] Improvements to the VPT Block Insertion Pass

[Pierre van Houtryve via Phabricator via llvm-commits]

Pierre-vh updated this revision to Diff 249877.
Pierre-vh added a comment.

Updated the diff to fix a bug: The pass refused to generate `vpsteee` blocks because the condition in `SkipPredicatedInstrs` was wrong (It needed to do one more iteration when `MaxSkips == 0`, and then stop).

The pass can now correctly generate this kind of assembly:

  	vpsteee	
  	vcmpt.s32	le, q1, r12
  	vcmpe.s32	lt, q1, r3
  	vstrwe.32	q0, [r6], #16
  	vstrwe.32	q0, [r4], #16


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D75993/new/

https://reviews.llvm.org/D75993

Files:
  llvm/lib/Target/ARM/MVEVPTBlockPass.cpp
  llvm/test/CodeGen/Thumb2/mve-pred-not.ll
  llvm/test/CodeGen/Thumb2/mve-pred-threshold.ll
  llvm/test/CodeGen/Thumb2/mve-vpt-3-blocks-kill-vpr.mir
  llvm/test/CodeGen/Thumb2/mve-vpt-nots.mir

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