[PATCH] [Statepoints] Support for "patchable" statepoints.

[Chen Li]

================
Comment at: lib/IR/Verifier.cpp:3410-3411
@@ -3386,4 +3409,4 @@
 
     // gc_relocate does not need to be the same type as the relocated pointer.
     // It can casted to the correct type later if it's desired
     break;
----------------
sanjoy wrote:
> pgavlin wrote:
> > An assertion that the result type remains a pointer would be helpful. This assert certainly helped me find and correct a few calls to gc.relocate that I hadn't fixed up when I was adjusting things for the GC transition change.
> This came in via a different change by Chen, I'll ask him to take a look.
I will submit a patch to assert gc_relocate returns a pointer type.

http://reviews.llvm.org/D9546

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