[LLVMbugs] [Bug 1028] NEW: CBE should support llvm.stacksave/stackrestore

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.org/bugs/show_bug.cgi?id=1028

           Summary: CBE should support llvm.stacksave/stackrestore
           Product: libraries
           Version: trunk
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Backend: C
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: sabre at nondot.org


The CBE should translate llvm.stacksave/stackrestore into calls to GCC's __builtin_stack_save/
__builtin_stack_restore functions.  The only tricky part of this is figuring out which versions of GCC have 
these builtins (if we care).

This would get 176.gcc working with the CBE, which would be very useful when bugpointing.

-Chris



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