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

[uros at gcc dot gnu.org]

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

--- Comment #4 from uros at gcc dot gnu.org ---
Author: uros
Date: Mon Aug 21 15:15:07 2017
New Revision: 251235

URL: https://gcc.gnu.org/viewcvs?rev=251235&root=gcc&view=rev
Log:
        PR target/46091
        * config/i386/i386.md (*btsq_imm): Rename from *btsq.
        (*btrq_imm): Rename from *btrq.
        (*btcq_imm): Rename from *btcq.
        (btsc): New code attribute.
        (*<btsc><mode>): New insn pattern.
        (*btr<mode>): Ditto.
        (*<btsc><mode>_mask): New insn_and_split pattern.
        (*btr<mode>_mask): Ditto.

testsuite/ChangeLog:

        PR target/46091
        * gcc.target/i386/pr46091-4.c: New test.
        * gcc.target/i386/pr46091-4a.c: Ditto.
        * gcc.target/i386/pr46091-5.c: Ditto.
        * gcc.target/i386/pr46091-5a.c: Ditto.


Added:
    trunk/gcc/testsuite/gcc.target/i386/pr46091-4.c
    trunk/gcc/testsuite/gcc.target/i386/pr46091-4a.c
    trunk/gcc/testsuite/gcc.target/i386/pr46091-5.c
    trunk/gcc/testsuite/gcc.target/i386/pr46091-5a.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/i386/i386.md
    trunk/gcc/testsuite/ChangeLog