[Bug rtl-optimization/66706] Redundant bitmask instruction on x >> (n & 32)

[segher at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66706

--- Comment #2 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Author: segher
Date: Thu Jul  2 16:27:11 2015
New Revision: 225344

URL: https://gcc.gnu.org/viewcvs?rev=225344&root=gcc&view=rev
Log:
        PR rtl-optimization/66706
        * combine.c (make_compound_operation): If an AND of SUBREG of
        LSHIFTRT does not simplify, see if just the AND of SUBREG does.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/combine.c