[PATCH v2 0/4] loop split fix and functions renaming

[Xionghu Luo <luoxhu@linux.ibm.com>]

This patchset is an followed update from [1].
Patch 1 is expecting review comments from Honza[2];
Patch 2 refactors loop_version to remove loopify call and adjust
condition generation later than loopify;
Patch 3 and Patch 4 are function renamings to help better understanding.

[1] https://gcc.gnu.org/pipermail/gcc-patches/2021-October/582600.html
[2] https://gcc.gnu.org/pipermail/gcc-patches/2021-October/582607.html

Xionghu Luo (4):
  Fix loop split incorrect count and probability
  Refactor loop_version
  Rename loop_version to clone_loop_to_header_edge.
  Rename duplicate_loop_to_header_edge to duplicate_loop_body_to_header_edge

 gcc/cfghooks.c                |  27 +++----
 gcc/cfghooks.h                |  13 ++-
 gcc/cfgloopmanip.c            | 144 +++++++++++-----------------------
 gcc/cfgloopmanip.h            |  17 ++--
 gcc/cfgrtl.c                  |   2 +-
 gcc/doc/loop.texi             |   4 +-
 gcc/gimple-loop-versioning.cc |  11 +--
 gcc/loop-unroll.c             |  27 +++----
 gcc/modulo-sched.c            |   6 +-
 gcc/tree-cfg.c                |   2 +-
 gcc/tree-if-conv.c            |  13 +--
 gcc/tree-loop-distribution.c  |   4 +-
 gcc/tree-parloops.c           |  10 +--
 gcc/tree-ssa-loop-ivcanon.c   |   4 +-
 gcc/tree-ssa-loop-manip.c     |  31 ++++----
 gcc/tree-ssa-loop-manip.h     |   7 +-
 gcc/tree-ssa-loop-split.c     |  39 +++++----
 gcc/tree-ssa-loop-unswitch.c  |   8 +-
 gcc/tree-vect-loop-manip.c    |   5 +-
 19 files changed, 159 insertions(+), 215 deletions(-)

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2.27.0.90.geebb51ba8c