ARG_POINTER_REGNUM is included in the artificial defs of all blocks
(which I think is overly conservative - just having them
in the entry block def should be enough).
Hence, from dataflow point of view, they are always considered initialized.
I think we should probably do something similar
for
On 6/19/07, Rask Ingemann Lambertsen <[EMAIL PROTECTED]> wrote:
..
Hmm, how do you handle arg_pointer_rtx, frame_pointer_rtx and the like?
The are all uninitialized until the prologue is emitted, which is some time
after reload.
ARG_POINTER_REGNUM is included in the artificial defs of all bl
On Tue, Jun 19, 2007 at 08:33:52AM -0400, Kenneth Zadeck wrote:
>
> Since it sounds like you understand this, are either of you willing/able
> to attack the problem at it's source?
Uros is already at it
http://gcc.gnu.org/ml/gcc-patches/2007-06/msg01317.html>.
--
Rask Ingemann Lambertsen
Rask Ingemann Lambertsen wrote:
> On Tue, Jun 19, 2007 at 11:11:54AM +0200, Uros Bizjak wrote:
>
>> On 6/19/07, Rask Ingemann Lambertsen <[EMAIL PROTECTED]> wrote:
>>
>>> It is possible to mess up the substitution that the vregs pass performs.
>>> IIRC, it happened to me once because I ac
On Tue, Jun 19, 2007 at 11:11:54AM +0200, Uros Bizjak wrote:
> On 6/19/07, Rask Ingemann Lambertsen <[EMAIL PROTECTED]> wrote:
> >
> > It is possible to mess up the substitution that the vregs pass performs.
> >IIRC, it happened to me once because I accidentally put one of these
> >virtual
> >ps
On 6/19/07, Rask Ingemann Lambertsen <[EMAIL PROTECTED]> wrote:
> 3) If they really are uninitialized, why is it a problem to assign zero
> to them.
It is possible to mess up the substitution that the vregs pass performs.
IIRC, it happened to me once because I accidentally put one of these v
On Mon, Jun 18, 2007 at 08:28:25PM -0400, Kenneth Zadeck wrote:
> I would like to get some more information about pr32374.
>
> I do not know what virtual_stack_vars are and there is no documentation
> in the doc directory.
less -p 'Virtual registers ' gcc/rtl.h
less -p 'enum global_rtl_index' gcc
> I would like to get some more information about pr32374.
>
> I do not know what virtual_stack_vars are and there is no documentation
> in the doc directory.
It is documented:
@findex VIRTUAL_STACK_VARS_REGNUM
@cindex @code{FRAME_GROWS_DOWNWARD} and virtual registers
@item VIRTUAL_STACK_VARS_REG
