[PATCH] D25428: AMDGPU add support for spilling to a user data SREG address.

[Nicolai Hähnle via llvm-commits]

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As mentioned on mesa-dev, I like the general approach, but instead of a machine feature to enable this I'd use a function attribute which designates one of the function arguments as the source for the spill pointer, e.g. "amdgpu-spill-ptr=4" to take the pointer from the fifth function argument (which would typically be SGPR 8/9).


Repository:
  rL LLVM

https://reviews.llvm.org/D25428