Now that SimpleLoopUnswitch and other transforms no longer introduce
branch on poison, enable the -branch-on-poison-as-ub option by
default. The practical impact of this is mostly better flag
preservation in SCEV, and some freeze instructions no longer being
necessary.
Differential Revision: https://reviews.llvm.org/D125299
This patch introduces a new VPLiveOut subclass of VPUser to model
exit values explicitly. The initial version handles exit values that
are neither part of induction or reduction chains nor first order
recurrence phis.
Fixes#51366, #54867, #55167, #55459
Reviewed By: Ayal
Differential Revision: https://reviews.llvm.org/D123537
This patch ensures scalars (except for uniforms) are no
longer collected (prior to LVP planning phase) for
scalable vectorization.
This is to avoid the chances of generating scalarized
instructions later (during LVP execute phase) as they
are not supported for scalable vectorization.
Relevant test has also been added.
Differential Revision: https://reviews.llvm.org/D121452
