Review URL: http://codereview.chromium.org/507051


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Review URL: http://codereview.chromium.org/165443


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This issue was raised by Brett Wilson while reviewing my changelist for readability. Craig Silverstein (one of C++ SG maintainers) confirmed that we should declare one namespace per line. Our way of namespaces closing seems not violating style guides (there is no clear agreement on it), so I left it intact.

Review URL: http://codereview.chromium.org/115756


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Allows backtracking to clear registers instead of pushing and popping
them to restore state.
Redo of 1135 with bug fixed.


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Reduces number of pushes when flushing a trace. Some are converted to clears
in the undo-code instead, and some just ignored if they have no value worth restoring.


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features.  Switch on Irregexp by default.
Review URL: http://codereview.chromium.org/18193

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also revealed a bug or two that had to be fixed.


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  the alternatives in a choice node.  The quick checks
  are conservative in the sense that they only detect
  failure with certainty.  Checks can do 2 or 4 characters
  at a time.
* Inline the quick checks to allow the alternatives to
  be checked without branching in the common case where
  they fail.
Review URL: http://codereview.chromium.org/14194

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* Facility for generating a node several ways.  This allows
  code to be generated for a node knowing where it is trying
  to match relative to the 'current position' and it allows
  code to be generated that knows where to backtrack to.  Both
  allow dramatic reductions in the amount of popping and pushing
  on the stack and the number of indirect jumps.
* Generate special backtracking for greedy quantifiers on
  constant-length atoms.  This allows .* to run in constant
  space relative to input string size.
* When we are checking a long sequence of characters or character
  classes in the input then we do them right to left and only the
  first (rightmost) needs to check for end-of-string.
* Record the pattern in the profile instead of just <CompiledRegExp>
* Nodes no longer contain an on_failure_ node.  This was only used
  for lookaheads and they are now handled with a choice node instead.
Review URL: http://codereview.chromium.org/12900

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new method too.
Fix spacing in tracer.
Review URL: http://codereview.chromium.org/12806

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Review URL: http://codereview.chromium.org/10992

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Tracer for regexp macro-assembler instructions


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