[Bug target/46091] missed optimization: x86 bt/btc/bts instructions

[aldyh at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=46091

--- Comment #5 from Aldy Hernandez <aldyh at gcc dot gnu.org> ---
Author: aldyh
Date: Wed Sep 13 16:57:52 2017
New Revision: 252427

URL: https://gcc.gnu.org/viewcvs?rev=252427&root=gcc&view=rev
Log:
        PR target/46091
        * config/i386/i386.md (*anddi_1_btr): New insn_and_split pattern.
        (*iordi_1_bts): Ditto.
        (*xordi_1_btc): Ditto.

testsuite/ChangeLog:

        PR target/46091
        * gcc.target/i386/pr46091-1.c: New test.
        * gcc.target/i386/pr46091-2.c: Ditto.
        * gcc.target/i386/pr46091-3.c: Ditto.

Added:
    branches/range-gen2/gcc/testsuite/gcc.target/i386/pr46091-1.c
    branches/range-gen2/gcc/testsuite/gcc.target/i386/pr46091-2.c
    branches/range-gen2/gcc/testsuite/gcc.target/i386/pr46091-3.c
Modified:
    branches/range-gen2/gcc/ChangeLog
    branches/range-gen2/gcc/config/i386/i386.md
    branches/range-gen2/gcc/testsuite/ChangeLog