[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 #5 from Oleg Endo <olegendo at gcc dot gnu.org> ---
Author: olegendo
Date: Wed Jan 14 23:46:34 2015
New Revision: 219623

URL: https://gcc.gnu.org/viewcvs?rev=219623&root=gcc&view=rev
Log:
gcc/
    PR target/53988
    * config/sh/sh-protos.h (sh_find_set_of_reg): Add option to ignore
    reg-reg copies.
    (sh_extending_set_of_reg): New struct.
    (sh_find_extending_set_of_reg, sh_split_tst_subregs,
    sh_remove_reg_dead_or_unused_notes): New Declarations.
    * config/sh/sh.c (sh_remove_reg_dead_or_unused_notes,
    sh_find_extending_set_of_reg, sh_split_tst_subregs,
    sh_extending_set_of_reg::use_as_extended_reg): New functions.
    * config/sh/sh.md (*tst<mode>_t_zero): Rename to *tst<mode>_t_subregs,
    convert to insn_and_split and use new function sh_split_tst_subregs.

gcc/testsuite/
    PR target/53988
    * gcc.target/sh/pr53988-1.c: New.

Added:
    trunk/gcc/testsuite/gcc.target/sh/pr53988-1.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/sh/sh-protos.h
    trunk/gcc/config/sh/sh.c
    trunk/gcc/config/sh/sh.md
    trunk/gcc/testsuite/ChangeLog