RESOLVED DUPLICATE of bug 126790126007
Implement a red zone in the JSStack so that we can remove entryChecks. 
https://bugs.webkit.org/show_bug.cgi?id=126007
Summary Implement a red zone in the JSStack so that we can remove entryChecks.
Mark Lam
Reported 2013-12-19 12:10:08 PST
Currently, VM entry points in Interpreter.cpp calls JSStack::entryCheck() ensure adequate capacity on the JSStack before re-entering the VM. We can eliminate this if we implement allow for a red zone in the JSStack.
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Add attachment proposed patch, testcase, etc.
Geoffrey Garen
Comment 1 2013-12-19 15:01:23 PST
Let's call this the "host zone", to distinguish from the OS-provided redzone, which is for leaf functions.
Mark Lam
Comment 2 2013-12-23 14:40:31 PST
It's a bit difficult to get this right with the JSStack internal pointers sometime pointing to the top of stack and sometimes pointing past the end of the stack. To make the code more sane to reason about, I will first fix https://bugs.webkit.org/show_bug.cgi?id=125849 before returning to this bug.
Mark Lam
Comment 3 2014-01-13 17:10:07 PST
This was fixed in r161927: <http://trac.webkit.org/r161927> which was committed for https://bugs.webkit.org/show_bug.cgi?id=126790. *** This bug has been marked as a duplicate of bug 126790 ***
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