Reviewers: Mads Ager,
Description:
Use generated code to create sub strings.
Added a stub to allocate and fill a string object with a substring from
another
string.
Use the rep movs instruction to copy the string data as it turned out to be
the
fastest way.
While preparing this I experimented with some SSE2 instructions, so the
instructions movdqa and movdqu are still in the IA-32 assembler even though
they
are not used.
Please review this at http://codereview.chromium.org/525085
SVN Base: http://v8.googlecode.com/svn/branches/bleeding_edge/
Affected files:
M src/arm/codegen-arm.h
M src/arm/codegen-arm.cc
M src/code-stubs.h
M src/codegen.cc
M src/ia32/assembler-ia32.h
M src/ia32/assembler-ia32.cc
M src/ia32/codegen-ia32.h
M src/ia32/codegen-ia32.cc
M src/runtime.cc
M src/string.js
M src/v8-counters.h
M src/x64/codegen-x64.h
M src/x64/codegen-x64.cc
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