197478 2019-05-01 14:53:34 -0700 Consider using isLive() check for cells in value profiles 2019-05-01 14:57:04 -0700 1 1 1 Unclassified WebKit JavaScriptCore WebKit Nightly Build Unspecified Unspecified NEW https://bugs.webkit.org/show_bug.cgi?id=197052 P2 Normal --- 1 saam saam benjamin fpizlo ggaren gskachkov guijemont keith_miller mark.lam msaboff rmorisset ticaiolima tzagallo ysuzuki oldest_to_newest 1532086 0 saam 2019-05-01 14:53:34 -0700 This would allow us to: - Not update profiles on GC ticks - Not writeBarrier CodeBlocks when they execute Worst case, we see something that lies as to what the value really is. But we shouldn't see garbage. 1532087 1 saam 2019-05-01 14:57:04 -0700 (In reply to Saam Barati from comment #0) > This would allow us to: > - Not update profiles on GC ticks > - Not writeBarrier CodeBlocks when they execute > > Worst case, we see something that lies as to what the value really is. But > we shouldn't see garbage. We also wouldn't have to emit a writeBarrier for OSR exit.