[LLVMdev] if-conversion

[Evan Cheng]

SimplifyCFG is mostly doing canonicalization. It does some obvious if-conversion. More general if-conversions require target info so it's done in MI passes. LLVM has an early if-converter which uses machinetracemetric and a late one after regalloc. 

Evan

Sent from my iPad

> On Nov 11, 2013, at 2:49 AM, Jonas Wagner <jonas.wagner at epfl.ch> wrote:
> 
> Hi,
>> 
>> Sorry to dig up an old thread but I wondered what the status of
>> if-conversion in LLVM is. Has any work been done towards handling this as a
>> transform pass on the IR?
> 
> As far as I know, some if-conversion is done in SimplifyCFG: Have a look at the SpeculativelyExecuteBB function in lib/Transforms/Utils/SimplifyCFG.cpp.
> 
> Cheers,
> Jonas
> 
> _______________________________________________
> LLVM Developers mailing list
> LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
> http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20131112/ca5ee3b9/attachment.html>