Bug 210650

Summary:	[JSC] FOR_EACH_CLOOP_BYTECODE_HELPER_ID should not be included in OpcodeID
Product:	WebKit	Reporter:	Yusuke Suzuki <ysuzuki>
Component:	JavaScriptCore	Assignee:	Nobody <webkit-unassigned>
Status:	NEW ---
Severity:	Normal	CC:	ysuzuki
Priority:	P2
Version:	WebKit Nightly Build
Hardware:	Unspecified
OS:	Unspecified

Description Yusuke Suzuki 2020-04-17 04:34:52 PDT

We only have 9 opcode space up to 256. If it exceeds 256, JSC is broken.
Even if we support two-level indirection mechanism to offer larger space of opcode, we know that this type of opcode offers significantly slower performance. (I know that in some bug).
We should remove unnecessary things from Bytecodes.