Reviewers: Toon Verwaest,
Message:
Hi Toon,
Here is the much-discussed perf. optimization to the vector IC dispatcher.
Note that is not an ia32 port. Ia32 is so register bound that I'd have to
offset
any gains with push/pop of some input values. So I don't bother there.
I'll turn off the vector-ic flag before submitting...
--Michael
Description:
Vector-ICs - speed towards the monomorphic exit as quickly as possible.
Thanks to some careful assumptions, we can examine the object found at
vector[slot] and trust it's a heap object where the second field is
either a map if it's a WeakCell, or definitely not a map if it's a
Symbol, String or FixedArray. Use this to save a memory read.
BUG=
Please review this at https://codereview.chromium.org/1032163002/
Base URL: https://chromium.googlesource.com/v8/v8.git@master
Affected files (+156, -196 lines):
M src/arm/assembler-arm.h
M src/arm/code-stubs-arm.cc
M src/arm64/code-stubs-arm64.cc
M src/flag-definitions.h
M src/x64/code-stubs-x64.cc
--
--
v8-dev mailing list
[email protected]
http://groups.google.com/group/v8-dev
---
You received this message because you are subscribed to the Google Groups "v8-dev" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
For more options, visit https://groups.google.com/d/optout.
