------- Comment #3 from ian at airs dot com 2006-02-16 01:58 -------
Just a note. My implementation of RTH's subreg lowering pass gives me this at
-O3:
f:
pushl %ebp
movl w, %eax
movl %esp, %ebp
movl w+4, %edx
popl %ebp
#APP
bswapl %eax ; bswapl %edx
#NO_APP
movl %edx, w
movl %eax, w+4
ret
With -momit-leaf-frame-pointer I get this:
f:
movl w, %eax
movl w+4, %edx
#APP
bswapl %eax ; bswapl %edx
#NO_APP
movl %edx, w
movl %eax, w+4
ret
which I suspect is optimal.
--
ian at airs dot com changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |ian at airs dot com
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21202
