JDK-8255665 : C2 should aggressively remove temporary hook nodes
Type:Enhancement
Component:hotspot
Sub-Component:compiler
Affected Version:16
Priority:P4
Status:Resolved
Resolution:Fixed
Submitted:2020-10-30
Updated:2024-12-09
Resolved:2020-11-05
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C2 often creates temporary "hook" nodes to keep other nodes alive. Although dead, these are sometimes not removed because they don't end up on the IGVN worklist.