[Bug target/37823] Missed optimization - ffs() from strings.h

[ubizjak at gmail dot com]

------- Comment #2 from ubizjak at gmail dot com  2008-10-18 16:43 -------
(In reply to comment #1)

> So the 64bit version is fine, the 32bit version is still funny.

Default 32bit target doesn't have cmov insn.

-O3 -m32 -msse produces expected asm:

foo:
        bsfl    8(%esp), %eax
        movl    $-1, %edx
        cmove   %edx, %eax
        movl    4(%esp), %edx
        addl    %edx, %eax
        ret


-- 

ubizjak at gmail dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |INVALID


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37823