[Bug target/59401] [SH] GBR addressing mode optimization produces wrong code

[olegendo at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=59401

--- Comment #2 from Oleg Endo <olegendo at gcc dot gnu.org> ---
Author: olegendo
Date: Sun Oct 12 23:14:07 2014
New Revision: 216128

URL: https://gcc.gnu.org/viewcvs?rev=216128&root=gcc&view=rev
Log:
gcc/
    PR target/59401
    * config/sh/sh-protos (sh_find_equiv_gbr_addr): Use rtx_insn* instead
    of rtx.
    * config/sh/sh.c (sh_find_equiv_gbr_addr): Use def chains instead of
    insn walking.
    (sh_find_equiv_gbr_addr): Do nothing if input mem is already a GBR
    address.  Use def chains to handle GBR clobbering call insns.

gcc/testsuite/
    PR target/59401
    PR target/54760
    * gcc.target/pr54760-5.c: New.
    * gcc.target/pr54760-6.c: New.
    * gcc.target/sh/pr59401-1.c: New.

Added:
    trunk/gcc/testsuite/gcc.target/sh/pr54760-5.c
    trunk/gcc/testsuite/gcc.target/sh/pr54760-6.c
    trunk/gcc/testsuite/gcc.target/sh/pr59401-1.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/sh/sh-protos.h
    trunk/gcc/config/sh/sh.c
    trunk/gcc/testsuite/ChangeLog