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2 Commits

Author SHA1 Message Date
Dmitry Olshansky 170aa90158 Re-landing of "replace TrySync with Metadata". 
Use that to sync variables to predefined stack
slots inside of exception handler, not before
each MayThrow() instruction.

In JIT mode we can avoid storing extra metadata
by using deopt info instead.

Introduce caching of metadata and
exception handler based on PC.

R=fschneider@google.com, vegorov@google.com

Review-Url: https://codereview.chromium.org/2734323003 .
 2017-03-13 13:27:00 +01:00
Dmitry Olshansky a32a3a6d2f Add exception handler cache to isolate 
This speeds up frequently throwing exception
at the same place(s) in the code.

R=fschneider@google.com, vegorov@google.com

Review-Url: https://codereview.chromium.org/2683633005 .
 2017-02-13 11:41:09 +01:00