[llvm] r231800 - Teach lowering to correctly handle invoke statepoint and gc results tied to them. Note that we still can not lower gc.relocates for invoke statepoints.

[Joerg Sonnenberger]

On Tue, Mar 10, 2015 at 04:26:48PM -0000, Igor Laevsky wrote:
> Author: igor.laevsky
> Date: Tue Mar 10 11:26:48 2015
> New Revision: 231800
> 
> URL: http://llvm.org/viewvc/llvm-project?rev=231800&view=rev
> Log:
> Teach lowering to correctly handle invoke statepoint and gc results tied to them. Note that we still can not lower gc.relocates for invoke statepoints.
> Also it extracts getCopyFromRegs helper function in SelectionDAGBuilder as we need to be able to customize type of the register exported from basic block during lowering of the gc.result.
> (Resubmitting this change after not being able to reproduce buildbot failure)

Is this a candidate for the 3.6 branch?

Joerg