[LLVMdev] PBQP spilling

Jonas Paulsson jonas.paulsson at ericsson.com
Wed Mar 4 04:51:11 PST 2015


Hi,

I would like to ask about PBQPs use of InlineSpiller. The code output when using PBQP gets a lot bigger compared to when using RegAllocGreedy. PBQP does not split the live intervals, and a lot more (often redundant) reload instructions are emitted as a result, it seems. I wonder why this is, and if there are any plans to improve on this point?

/Jonas Paulsson

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20150304/64e290d8/attachment.html>


More information about the llvm-dev mailing list