[llvm-commits] [llvm] r123405 - /llvm/trunk/lib/Target/README.txt

[Frits van Bommel]

2011/1/14 Rafael Ávila de Espíndola <rafael.espindola at gmail.com>:
> On 11-01-13 5:08 PM, Chris Lattner wrote:
>> memcpy + metadata = bliss :)
>
> Would adding stores of undefs to the holes have the same effect?

(This was discussed on IRC a few days ago)
Stores of undefs are deleted by e.g. -instcombine, long before
-scalarrepl ever sees them.
Metadata is much more likely to survive until it's needed.