123233 2013-10-23 16:49:40 -0700 We're going to have to save tagTypeNumber/tagMask/regT3/regT10 for the FTL at some point (since they're callee save) 2014-01-30 13:22:42 -0800 1 1 1 Unclassified WebKit JavaScriptCore 528+ (Nightly build) All All RESOLVED DUPLICATE 125811 P2 Normal --- 113621 1 fpizlo fpizlo barraclough ggaren mark.lam mhahnenberg msaboff oliver sam oldest_to_newest 942906 0 fpizlo 2013-10-23 16:49:40 -0700 Because Mark realized that. 943174 1 fpizlo 2013-10-24 09:38:35 -0700 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. 973957 2 fpizlo 2014-01-30 13:22:42 -0800 This has been worked around with bug 125811. *** This bug has been marked as a duplicate of bug 125811 ***