[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 #46 from Oleg Endo <olegendo at gcc dot gnu.org> 2012-08-09 
15:55:23 UTC ---
Author: olegendo
Date: Thu Aug  9 15:55:18 2012
New Revision: 190258

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=190258
Log:
    PR target/51244
    * config/sh/sh.md: Add negc extu sequence peephole.
    (movrt, movnegt, movrt_negc, nott): Use t_reg_operand predicate.
    (*movrt_negc): New insn.
    * config/sh/sync.md (atomic_test_and_set): Pass gen_t_reg_rtx to
    gen_movnegt.
    * config/sh/sh.c (expand_cbranchsi4, sh_emit_scc_to_t,
    sh_emit_compare_and_branch, sh_emit_compare_and_set): Use get_t_reg_rtx.
    (sh_expand_t_scc): Pass gen_t_reg_rtx to gen_movnegt.

    PR target/51244
    * gcc.target/sh/pr51244-5: New.
    * gcc.target/sh/pr51244-6: New.


Added:
    trunk/gcc/testsuite/gcc.target/sh/pr51244-5.c
    trunk/gcc/testsuite/gcc.target/sh/pr51244-6.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/sh/sh.c
    trunk/gcc/config/sh/sh.md
    trunk/gcc/config/sh/sync.md
    trunk/gcc/testsuite/ChangeLog