Reviewers: Weiliang,
Message:
PTAL.
Description:
X87: New hydrogen instruction to reduce cost of growing an array on keyed
stores.
port 3bce9c3afbe792167a54db49b16679289e0aea8f (r28359).
original commit message:
HMaybeGrowElements moves the situation where you actually have to grow
into deferred code. This means crankshaft doesn't have to spill
registers
just to make the bounds comparison to see if it'll need to grow or not.
It makes the growing case a bit more expensive, but reduces the cost of
the general case.
BUG=
Please review this at https://codereview.chromium.org/1124093008/
Base URL: https://chromium.googlesource.com/v8/v8.git@master
Affected files (+130, -1 lines):
M src/x87/interface-descriptors-x87.cc
M src/x87/lithium-codegen-x87.h
M src/x87/lithium-codegen-x87.cc
M src/x87/lithium-x87.h
M src/x87/lithium-x87.cc
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