[Bug target/32433] Code for __builtin_ffs does not benefit from compiler optimizations

[uros at gcc dot gnu dot org]

------- Comment #3 from uros at gcc dot gnu dot org  2007-06-30 17:06 -------
Subject: Bug 32433

Author: uros
Date: Sat Jun 30 17:05:49 2007
New Revision: 126154

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=126154
Log:
        PR target/32433
        * config/i386/i386.md (ffssi2): Expand as ffs_cmove for TARGET_CMOVE.
        (ffs_cmove): New expander to expand using ctz pattern.
        (*ffs_cmove): Remove pattern.
        (*ffs_no_cmove): Enable only for !TARGET_CMOVE.
        (ffsdi2): Expand using ctz pattern.
        (*ffs_rex64): Remove pattern.


Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/i386/i386.md


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32433