Bug 175842

Summary:	If a catch OSR exit becomes hot but we didn't compile the catch in DFG IR, we should consider reoptimizing the codeblock
Product:	WebKit	Reporter:	Saam Barati <saam>
Component:	JavaScriptCore	Assignee:	Saam Barati <saam>
Status:	NEW ---
Severity:	Normal	CC:	benjamin, fpizlo, ggaren, gskachkov, jfbastien, keith_miller, mark.lam, msaboff, rmorisset, ticaiolima, ysuzuki
Priority:	P2
Version:	WebKit Nightly Build
Hardware:	Unspecified
OS:	Unspecified
Bug Depends on:	174590
Bug Blocks:

Description Saam Barati 2017-08-22 12:49:50 PDT

What could happen is:
- We notice an op_catch never executes, so we don't compile it
- Then we start exiting to that op_catch
- We never jettison

In such situations, it could be useful to jettison and reoptimize so the catch is optimized