Reviewers: Igor Sheludko,
Message:
Hi Igor,
Here is the FeedbackNexus, now in use for the production code CallIC. I will
delay the other nexus types (Load and KeyedLoad) to a future CL. Thanks for
the
look,
--Michael
Description:
Introduce FeedbackNexus for vector-based ics.
A FeedbackNexus is the combination of a feedback vector, a slot(s) in
the vector, along with methods to query and manipulate that information
in a type-correct way.
A CallIC will have a CallICNexus, a LoadIC a LoadICNexus, etc.,
reflecting the fact that different types of ICs configure their data
in unique ways.
This CL limits itself to introducing and using the nexus type only for
CallICs. A follow-up will use them for Load and KeyedLoadICs for the
case when the --vector-ics flag is turned on.
The notion of a Nexus is also embedded at the lowest level of the IC
class. This makes sense because more ICs should become vector-based
in the future.
This CL is based on https://codereview.chromium.org/679073002/ which
should land first.
BUG=
Please review this at https://codereview.chromium.org/680883004/
Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Affected files (+359, -132 lines):
M src/ic/ic.h
M src/ic/ic.cc
M src/ic/ic-inl.h
M src/ic/ic-state.h
M src/ic/ic-state.cc
M src/type-feedback-vector.h
M src/type-feedback-vector.cc
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