RESOLVED DUPLICATE of bug 125811 Bug 123233
We're going to have to save tagTypeNumber/tagMask/regT3/regT10 for the FTL at some point (since they're callee save) 
https://bugs.webkit.org/show_bug.cgi?id=123233
Summary We're going to have to save tagTypeNumber/tagMask/regT3/regT10 for the FTL at...
Filip Pizlo
Reported 2013-10-23 16:49:40 PDT
Because Mark realized that.
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Filip Pizlo
Comment 1 2013-10-24 09:38:35 PDT
I think that the best way of doing this is to have LLVM->JSC call thunks which save those callee-save registers that the other JSC execution engines use. Saving anything in a thunk is hard because if you save it to the stack, you'll have to move the call frame and arguments as well. So, I think that these thunks should save the values of those registers into a side-stack. The stack pointer for this side-stack should be in a global variable.
Filip Pizlo
Comment 2 2014-01-30 13:22:42 PST
This has been worked around with bug 125811. *** This bug has been marked as a duplicate of bug 125811 ***
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