Bug 123233 - We're going to have to save tagTypeNumber/tagMask/regT3/regT10 for the FTL at some point (since they're callee save)
Summary: We're going to have to save tagTypeNumber/tagMask/regT3/regT10 for the FTL at...
Status: RESOLVED DUPLICATE of bug 125811
Alias: None
Product: WebKit
Classification: Unclassified
Component: JavaScriptCore (show other bugs)
Version: 528+ (Nightly build)
Hardware: All All
: P2 Normal
Assignee: Filip Pizlo
URL:
Keywords:
Depends on:
Blocks: 113621
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Reported: 2013-10-23 16:49 PDT by Filip Pizlo
Modified: 2014-01-30 13:22 PST (History)
7 users (show)

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Description Filip Pizlo 2013-10-23 16:49:40 PDT 
Because Mark realized that.
Comment 1 Filip Pizlo 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.
Comment 2 Filip Pizlo 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 ***