On 10/06/11 20:27, H.J. Lu wrote:
> It also caused:
>
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50633
>
> Don't you need to update ix86_expand_prologue?
In theory it should just work. It seems the x32 stuff has entertaining
properties :-( Haven't quite figured out how to build it yet, but:
- subq $136, %rsp
- .cfi_def_cfa_offset 144
movl $0, %eax
movl %esp, %ecx
addl $60, %ecx
@@ -16,6 +14,8 @@ main:
movl %eax, (%edx)
cmpl $16, %eax
jne .L2
+ subq $136, %rsp
+ .cfi_def_cfa_offset 144
So, this looks like we have both $esp and $rsp - i.e. not using
stack_pointer_rtx in all cases? Is there a way to avoid this?
BTW, one other thing that occurred to me - what about drap_reg? Does
that need to be added to the set of registers whose use requires a prologue?
Bernd
