[LLVMdev] PBQP spilling

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


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

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