[Bug target/51244] [SH] Inefficient conditional branch and code around T bit

[olegendo at gcc dot gnu.org]

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

--- Comment #78 from Oleg Endo <olegendo at gcc dot gnu.org> ---
Author: olegendo
Date: Sat Nov 22 15:50:10 2014
New Revision: 217969

URL: https://gcc.gnu.org/viewcvs?rev=217969&root=gcc&view=rev
Log:
gcc/
    PR target/63783
    PR target/51244
    * config/sh/sh_treg_combine.cc (sh_treg_combine::make_not_reg_insn):
    Do not emit bitwise not insn.  Emit logical not insn sequence instead.
    Adjust related comments throughout the file.

gcc/testsuite/
    PR target/63783
    PR target/51244
    * gcc.target/sh/torture/pr63783-1.c: New.
    * gcc.target/sh/torture/pr63783-2.c: New.
    * gcc.target/sh/pr51244-20.c: Adjust.
    * gcc.target/sh/pr51244-20-sh2a.c: Adjust.

Added:
    trunk/gcc/testsuite/gcc.target/sh/torture/pr63783-1.c
    trunk/gcc/testsuite/gcc.target/sh/torture/pr63783-2.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/sh/sh_treg_combine.cc
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gcc.target/sh/pr51244-20-sh2a.c
    trunk/gcc/testsuite/gcc.target/sh/pr51244-20.c