[Bug target/53988] [SH] tst Rm,Rn not used for QI/HImode

[olegendo at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53988

--- Comment #6 from Oleg Endo <olegendo at gcc dot gnu.org> ---
Author: olegendo
Date: Mon Jan 19 22:35:53 2015
New Revision: 219864

URL: https://gcc.gnu.org/viewcvs?rev=219864&root=gcc&view=rev
Log:
gcc/
    PR target/53988
    * config/sh/sh-protos.h (sh_find_set_of_reg): Make sure not to return
    nullptr for insn when reaching the first insn.
    * config/sh/sh.c (sh_unspec_insn_p): Rewrite using subrtx_iterator.
    (sh_insn_operands_modified_between_p): Add nullptr check.
    (sh_find_extending_set_of_reg): Fix log message.  Don't accept
    sign extending mem load if the insn contains any UNSPEC or
    UNSPEC_VOLATILE.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/sh/sh-protos.h
    trunk/gcc/config/sh/sh.c