http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59927
Richard Henderson <rth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |rth at gcc dot gnu.org
--- Comment #6 from Richard Henderson <rth at gcc dot gnu.org> ---
Created attachment 32080
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=32080&action=edit
testing patch
Here's a patch that seems altogether too straightforward.
It suppresses the incorrect first adjustment mentioned in the previous
comment while retaining the reg_parm_stack_space adjust.
I also tested the obvious 5 argument call and see
subq $8, %rsp
pushq $4
subq $32, %rsp
movl $3, %r9d
movl $2, %r8d
movl $1, %edx
movl $0, %ecx
call baz
which seems inefficient, but is also correct.
I'll attempt to test this at some point this weekend, but I'm not
currently in a position to build on x86_64 windows. Kai, can you
fire something off?
