Reviewers: Sven Panne,
Message:
Hey Sven,
Next step towards using map stability during check elimination.
PTAL
-- Benedikt
Description:
Various cleanups in check elimination.
- Move IsMapAccess() to HObjectAccess.
- Collect the actual objects instead of HStoreNamedFields in
effects, and also consider HTransitionElementsKind.
- Fix ownership of HCheckMaps::maps() and HLoadNamedField::maps().
- Avoid heavy copying of the same map sets all the time during
check elimination, and do something useful with the memory
instead by slightly bumping the maximum number of tracked
objects.
- Slightly optimize UniqueSet::Contains().
Please review this at https://codereview.chromium.org/264693011/
SVN Base: https://v8.googlecode.com/svn/branches/bleeding_edge
Affected files (+159, -150 lines):
M src/arm/lithium-codegen-arm.cc
M src/arm64/lithium-codegen-arm64.cc
M src/hydrogen-check-elimination.cc
M src/hydrogen-escape-analysis.cc
M src/hydrogen-instructions.h
M src/hydrogen-instructions.cc
M src/hydrogen-load-elimination.cc
M src/ia32/lithium-codegen-ia32.cc
M src/mips/lithium-codegen-mips.cc
M src/unique.h
M src/x64/lithium-codegen-x64.cc
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