Reviewers: Michael Starzinger,
Message:
PTAL
Description:
Add an IC for CompareNil operations
This includes:
- Support for a "is_compiled" Code flag to distinguish Crankshafted code
objects
from their non-Crankshafted counterparts. This allows all variants of ICs
and
STUBs to either be Crankshafted or not without creating special Code Kinds
or
other code boilerplate gymnastics.
- Modifying the IfBuilder to support continuations that can be used from
generated ICs and from Hydrogen
- Changes to the IfBuilder to support "Or" and "And" expressions.
- Adding an "uninitialized" variant of Hydrogen code stubs that quickly
call to
the runtime miss code via a "LightWeightMiss" stub the first time rather
than
de-opting (for efficiency reasons).
- Remove all IsNilAndBranch platform-specific instructions and replace them
with
the corresponding sequence of smaller hydrogen "atoms".
Please review this at https://codereview.chromium.org/13728002/
SVN Base: https://v8.googlecode.com/svn/branches/bleeding_edge
Affected files:
M src/arm/code-stubs-arm.h
M src/arm/lithium-arm.cc
M src/code-stubs-hydrogen.cc
M src/code-stubs.h
M src/code-stubs.cc
M src/codegen.cc
M src/compiler.h
M src/compiler.cc
M src/deoptimizer.cc
M src/disassembler.cc
M src/factory.h
M src/factory.cc
M src/heap.h
M src/heap.cc
M src/hydrogen-instructions.h
M src/hydrogen-instructions.cc
M src/hydrogen.h
M src/hydrogen.cc
M src/ia32/code-stubs-ia32.h
M src/ia32/code-stubs-ia32.cc
M src/ia32/full-codegen-ia32.cc
M src/ia32/lithium-codegen-ia32.cc
M src/ia32/lithium-ia32.h
M src/ia32/lithium-ia32.cc
M src/ic.h
M src/ic.cc
M src/lithium.h
M src/lithium.cc
M src/log.cc
M src/mips/code-stubs-mips.h
M src/mips/lithium-mips.cc
M src/objects-inl.h
M src/objects.h
M src/objects.cc
M src/runtime.cc
M src/safepoint-table.cc
M src/spaces.cc
M src/x64/code-stubs-x64.h
M src/x64/lithium-x64.cc
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