Reviewers: rossberg, titzer,
Description:
Adding visitors to regurgitate expression types or reset them.
Adding an AstExpressionVisitor to touch each expression node in
an AST.
Adding TypingReseter to clear the slate after a failed asm.js
validation that has set partial typing information.
Adding a ExpressionTypeCollector to walk the expressions
in an AST and emit them as a string for testing.
Adding tests of the above.
LOG=N
BUG= https://code.google.com/p/v8/issues/detail?id=4203
TEST=test-typing-reset,test-ast-expression-visitor
[email protected],[email protected]
Please review this at https://codereview.chromium.org/1288773007/
Base URL: https://chromium.googlesource.com/v8/v8.git@master
Affected files (+1018, -2 lines):
M BUILD.gn
A src/ast-expression-visitor.h
A src/ast-expression-visitor.cc
A src/typing-reset.h
A src/typing-reset.cc
M test/cctest/cctest.gyp
A test/cctest/expression-type-collector.h
A test/cctest/expression-type-collector.cc
A test/cctest/test-ast-expression-visitor.cc
A test/cctest/test-typing-reset.cc
M tools/gyp/v8.gyp
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