Bug 224618

Summary:	[JSC] Remove RareCaseProfile
Product:	WebKit	Reporter:	Yusuke Suzuki <ysuzuki>
Component:	JavaScriptCore	Assignee:	Yusuke Suzuki <ysuzuki>
Status:	RESOLVED DUPLICATE
Severity:	Normal	CC:	webkit-bug-importer
Priority:	P2	Keywords:	InRadar
Version:	WebKit Nightly Build
Hardware:	Unspecified
OS:	Unspecified

Description Yusuke Suzuki 2021-04-15 12:51:43 PDT

RareCareProfile is only used for add, to_this, sub and mod, while we are allocating it for all bytecodes having slowcases in JIT.
And since each RareCaseProfile has 8 bytes, this is too large for this rare case counter.

We should do some of these things.

1. We should consider putting very small counter (uint8_t or less) in Metadata for these opcodes.
2. And/Or we should put this counter in IC's data structure.

Comment 1 Radar WebKit Bug Importer 2021-04-22 12:52:17 PDT

<rdar://problem/77033452>

Comment 2 Yusuke Suzuki 2021-05-19 14:55:19 PDT


*** This bug has been marked as a duplicate of bug 225983 ***