[llvm-commits] [llvm] r114312 - /llvm/trunk/lib/CodeGen/SelectionDAG/DAGCombiner.cpp

[Chris Lattner]

On Sep 20, 2010, at 12:11 AM, Anton Korobeynikov wrote:

>> What is the compile-time performance impact of this?
> Even if the impact is significant - will it make sense to enable it
> at, say,  -O3 ?

It depends on how significant.  If it explodes compile time in some case, then we should fix that before enabling it anywhere.

On a random note, Owen why do you need to enable things on mainline to see if they'll break regression tests and llvm-test?

-Chris