ASSIGNED 191738
Inline cache for RegExp.lastIndex. 
https://bugs.webkit.org/show_bug.cgi?id=191738
Summary Inline cache for RegExp.lastIndex.
Mark Lam
Reported 2018-11-15 21:59:37 PST
Doing so may enable the DFG to make RegExp.lastIndex reads even faster.
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Add attachment proposed patch, testcase, etc.
Radar WebKit Bug Importer
Comment 1 2018-11-15 22:00:54 PST
<rdar://problem/46118564>
Saam Barati
Comment 2 2018-11-16 11:42:46 PST
(In reply to Mark Lam from comment #0) > Doing so may enable the DFG to make RegExp.lastIndex reads even faster. I don't think that's quite right. We still want the DFG node, but doing inline caching will help the baseline JIT and the DFG/FTL in certain cases where it doesn't lower to the GetRegExpObjectLastIndex node.
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