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

["uros at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

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

--- Comment #3 from uros at gcc dot gnu.org ---
Author: uros
Date: Wed Aug 16 15:25:34 2017
New Revision: 251124

URL: https://gcc.gnu.org/viewcvs?rev=251124&root=gcc&view=rev
Log:
        PR target/46091
        * config/i386/i386.md (*anddi_1_btr): Change predicates of
        operand 0 and operand 1 to nomimmediate_operand. Add "m" constraint.
        Add ix86_binary_operator_ok to insn constraint.
        (*iordi_1_bts): Ditto.
        (*xordi_1_btc): Ditto.
        (*btsq): Change predicate of operand 0 to nonimmediate_operand.
        Update corresponding peephole2 pattern.
        (*btrq): Ditto.
        (*btcq): Ditto.

testsuite/ChangeLog:

        PR target/46091
        * gcc.target/i386/pr46091-1.c: Update scan-assembler-times.
        (testm): New test function.
        * gcc.target/i386/pr46091-2.c: Ditto.
        * gcc.target/i386/pr46091-3.c: Ditto.


Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/i386/i386.md
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gcc.target/i386/pr46091-1.c
    trunk/gcc/testsuite/gcc.target/i386/pr46091-2.c
    trunk/gcc/testsuite/gcc.target/i386/pr46091-3.c