http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55247
H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |UNCONFIRMED
Component|middle-end |rtl-optimization
Depends on| |55259
Ever Confirmed|1 |0
--- Comment #12 from H.J. Lu <hjl.tools at gmail dot com> 2012-11-10 19:02:04
UTC ---
(In reply to comment #11)
> ~/gcc-build/gcc/cc1 -O2 -mx32 -maddress-mode=long pr55247.c
>
> results in following sequence:
>
> movdqu (%eax), %xmm0
> movdqa %xmm0, (%rsp)
> movq (%rsp), %rax
> movq 8(%rsp), %rdx
> movq %rax, 16(%rsp)
> movq %rdx, 24(%rsp)
>
> while -maddress=mode=short produces expected code:
>
> movq 8(%eax), %rdx
> movq (%eax), %rax
> movq %rdx, 8(%esp)
> movq %rax, (%esp)
This is related to PR 55259. This patch:
http://gcc.gnu.org/ml/gcc-patches/2012-11/msg00799.html
fixes it.
