On 07/05/2011 01:54 AM, Alan Modra wrote:
Before that, fwprop never tries to work on hard registers.
I question this claim. It seems to me that fwprop did look at
paradoxical subregs of hard regs before my change.
That wasn't part of the design anyway. The main purpose of fwprop's
Paolo Bonzini bonz...@gnu.org writes:
On 07/05/2011 01:54 AM, Alan Modra wrote:
Before that, fwprop never tries to work on hard registers.
I question this claim. It seems to me that fwprop did look at
paradoxical subregs of hard regs before my change.
That wasn't part of the design
On 07/05/2011 10:51 AM, Richard Sandiford wrote:
The patch is okay as far as I'm concerned, but I'm not a maintainer of
fwprop.
You probably should be:-)
I'd have no problem with that!
Paolo
H.J. Lu hongjiu...@intel.com writes:
RTL-based forward propagation pass shouldn't propagate hard register.
That's seems a bit draconian. Many fixed hard registers ought to be OK.
E.g. there doesn't seem to be anything wrong with propagating uses of
the stack or frame pointers, subject to the
On Mon, Jul 4, 2011 at 12:57 PM, Richard Sandiford
rdsandif...@googlemail.com wrote:
H.J. Lu hongjiu...@intel.com writes:
RTL-based forward propagation pass shouldn't propagate hard register.
That's seems a bit draconian. Many fixed hard registers ought to be OK.
E.g. there doesn't seem to
On Mon, Jul 4, 2011 at 1:52 PM, H.J. Lu hjl.to...@gmail.com wrote:
On Mon, Jul 4, 2011 at 12:57 PM, Richard Sandiford
rdsandif...@googlemail.com wrote:
H.J. Lu hongjiu...@intel.com writes:
RTL-based forward propagation pass shouldn't propagate hard register.
That's seems a bit draconian.
On Mon, Jul 04, 2011 at 01:57:34PM -0700, H.J. Lu wrote:
forward_propagate_subreg issue was introduced by
http://gcc.gnu.org/ml/gcc-patches/2009-08/msg01203.html
Before that, fwprop never tries to work on hard registers.
I question this claim. It seems to me that fwprop did look at
On Mon, Jul 4, 2011 at 4:54 PM, Alan Modra amo...@gmail.com wrote:
On Mon, Jul 04, 2011 at 01:57:34PM -0700, H.J. Lu wrote:
forward_propagate_subreg issue was introduced by
http://gcc.gnu.org/ml/gcc-patches/2009-08/msg01203.html
Before that, fwprop never tries to work on hard registers.
I
On Mon, Jul 04, 2011 at 05:09:28PM -0700, H.J. Lu wrote:
On Mon, Jul 4, 2011 at 4:54 PM, Alan Modra amo...@gmail.com wrote:
I didn't set out to do anything special with hard regs one way or the
other, just extended what was already done for paradoxical subregs to
sign and zero extended
Hi,
RTL-based forward propagation pass shouldn't propagate hard register.
OK for trunk?
Thanks.
H.J.
---
2011-06-14 H.J. Lu hongjiu...@intel.com
PR rtl-optimization/47449
* fwprop.c (forward_propagate_subreg): Don't propagate hard
register nor zero/sign extended hard
10 matches
Mail list logo
