http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49281
H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |4.7.0
Summary|lea_general_4 doesn't work |lea_general_4 is wrong
|for x32 |
--- Comment #3 from H.J. Lu <hjl.tools at gmail dot com> 2011-06-04 15:16:38
UTC ---
I don't think from
movl %eax, %ecx
orl $1, %ecx
sall $2, %ecx
to
leal 4(,%rax,4), %ecx
is valid transformation. For EAX == 43,
leal 4(,%rax,4), %ecx
gives "43*4 + 4" == 176. But
movl %eax, %ecx
orl $1, %ecx
sall $2, %ecx
gives "(43 | 1) << 2" == 172. I don't see how it can work.
