[llvm-commits] [llvm] r52933 - /llvm/trunk/lib/CodeGen/LLVMTargetMachine.cpp

[Evan Cheng]

Surprisingly turning off DAG combiner will slow down compilation. The  
dag combiner time is out weighted by the time spent processing all the  
crap that's not optimized away. It's possible we can turn off the  
second run of dag combiner only. I'll find out if that's case.

Evan

On Jul 1, 2008, at 1:09 AM, Duncan Sands wrote:

> Hi Evan,
>
>> Don't run stack slot coloring if -fast.
>
> I noticed that the DAG combiner runs even if -fast.
> Is that needed for correctness or is it an oversight?
>
> Ciao,
>
> Duncan.