Reviewers: Vyacheslav Egorov,
Description:
Eliminate write barrier for global stores at compile time if value stored
is a
smi.
Omit smi check inside write barriers if the value is known to be a heap
object.
Refine inferred types of some instructions.
Please review this at http://codereview.chromium.org/8256016/
SVN Base: http://v8.googlecode.com/svn/branches/bleeding_edge/
Affected files:
M src/arm/lithium-arm.h
M src/arm/lithium-codegen-arm.h
M src/arm/lithium-codegen-arm.cc
M src/hydrogen-instructions.h
M src/hydrogen-instructions.cc
M src/ia32/lithium-codegen-ia32.h
M src/ia32/lithium-codegen-ia32.cc
M src/ia32/lithium-ia32.h
M src/x64/lithium-codegen-x64.h
M src/x64/lithium-codegen-x64.cc
M src/x64/lithium-x64.h
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