[Bug tree-optimization/93118] >>32<<32 is not always converted into &~0ffffffffull at the tree level

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93118

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Tue Jan  7 10:03:07 2020
New Revision: 279950

URL: https://gcc.gnu.org/viewcvs?rev=279950&root=gcc&view=rev
Log:
        PR tree-optimization/93118
        * match.pd ((x >> c) << c -> x & (-1<<c)): Add nop_convert?.  Add new
        simplifier with two intermediate conversions.

        * gcc.dg/tree-ssa/pr93118.c: New test.

Added:
    trunk/gcc/testsuite/gcc.dg/tree-ssa/pr93118.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/match.pd
    trunk/gcc/testsuite/ChangeLog