Reviewers: mvstanton,
Message:
PTAL, this version doesn't try to tweak the register allocation like the
last
one (which was wrong).
Description:
Reland r20974: Unify and simplify the FastCloneShallowArrayStub
- Don't bake in length/capacity into full codegen calls of stubs,
allowing boilerplates to increase their capacity without regenerating
code.
- Unify all variants of the clone stub into a single,
length-independent version.
- Various tweaks to make sure that the clone stub doesn't spill and
therefore need an eager stack frame.
- Handle all lengths of array literals in the fast case.
Please review this at https://codereview.chromium.org/272513004/
SVN Base: https://v8.googlecode.com/svn/branches/bleeding_edge
Affected files (+334, -338 lines):
M src/arm/code-stubs-arm.cc
M src/arm/full-codegen-arm.cc
M src/arm64/code-stubs-arm64.cc
M src/arm64/full-codegen-arm64.cc
M src/code-stubs.h
M src/code-stubs.cc
M src/code-stubs-hydrogen.cc
M src/counters.h
M src/hydrogen.h
M src/hydrogen.cc
M src/ia32/code-stubs-ia32.cc
M src/ia32/full-codegen-ia32.cc
M src/mips/full-codegen-mips.cc
M src/x64/code-stubs-x64.cc
M src/x64/full-codegen-x64.cc
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