[Bug target/51244] SH Target: Inefficient conditional branch

[olegendo at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51244

--- Comment #12 from Oleg Endo <olegendo at gcc dot gnu.org> 2012-03-05 
23:12:27 UTC ---
Author: olegendo
Date: Mon Mar  5 23:12:20 2012
New Revision: 184966

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=184966
Log:
    PR target/51244
    * config/sh/sh.c (sh_expand_t_scc): Remove SH2A special case
    and use unified expansion logic.
    * config/sh/sh.md (xorsi3_movrt): Rename to movrt.  Move
    closer to the existing movt insn.
    (negc): Rename insn to *negc.  Add new expander.
    (movnegt): Use xor pattern for T bit negation.  Reserve helper
    constant for negc pattern.
    (*movnegt): New insn and splitter.

    PR target/51244
    * gcc.target/sh/pr51244-1.c: New.
    * gcc.target/sh/pr51244-2.c: New.
    * gcc.target/sh/pr51244-3.c: New.


Added:
    trunk/gcc/testsuite/gcc.target/sh/pr48596.c
    trunk/gcc/testsuite/gcc.target/sh/pr51244-1.c
    trunk/gcc/testsuite/gcc.target/sh/pr51244-2.c
    trunk/gcc/testsuite/gcc.target/sh/pr51244-3.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/sh/sh.c
    trunk/gcc/config/sh/sh.md
    trunk/gcc/testsuite/ChangeLog