[Bug target/62147] missed loop counter based optimization

[linkw at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62147

--- Comment #6 from Kewen Lin <linkw at gcc dot gnu.org> ---
Author: linkw
Date: Thu Jun 27 05:24:00 2019
New Revision: 272731

URL: https://gcc.gnu.org/viewcvs?rev=272731&root=gcc&view=rev
Log:

Call finite_loop_p in RTL to get better finiteness information.

gcc/ChangeLog

2019-06-27  Kewen Lin  <li...@gcc.gnu.org>

    PR target/62147
    * gcc/loop-iv.c (find_simple_exit): Call finite_loop_p to update
finiteness.

gcc/testsuite/ChangeLog

2019-06-27  Kewen Lin  <li...@gcc.gnu.org>

    PR target/62147
    * gcc.target/powerpc/pr62147.c: New test.


Added:
    trunk/gcc/testsuite/gcc.target/powerpc/pr62147.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/loop-iv.c
    trunk/gcc/testsuite/ChangeLog