On Thu, Jan 16, 2014 at 7:30 PM, Jeff Law wrote:
> On 01/16/14 04:49, Richard Biener wrote:
>>
>>
>> Well - the issue here is that inlining / IPA-CP propagates constant
>> arguments to direct uses which of course exposes constant propagation
>> opportunities. Now, copyprop doesn't to "real" const
On 01/16/14 04:49, Richard Biener wrote:
Well - the issue here is that inlining / IPA-CP propagates constant
arguments to direct uses which of course exposes constant propagation
opportunities. Now, copyprop doesn't to "real" constant propagation,
it just also propagates constants as if they we
On Wed, Jan 15, 2014 at 10:39 PM, Jeff Law wrote:
>
> Our SSA copy-prop passes do a pretty pathetic job at cleaning up after
> themselves when const/copy propagation exposes new trivial copies and
> constant initializations.
>
> This can be seen in the code for pr57904 after copyprop2 for bb2
>
>
On 01/15/14 15:15, Marek Polacek wrote:
-ENOPATCH
Nuts.
Patch attached.
* tree-ssa-propagate.c (substitute_and_fold): Add argument for
statement folded notification callbacks. Use it.
* tree-ssa-propagate.h (substitute_and_fold): Update prototype.
* tree-ss
-ENOPATCH
Our SSA copy-prop passes do a pretty pathetic job at cleaning up after
themselves when const/copy propagation exposes new trivial copies and
constant initializations.
This can be seen in the code for pr57904 after copyprop2 for bb2
_2 = 344;
ubound.0_3 = _2 & 7;
size.1_4 = ubound.0_3 +
