[PATCH] require LLVM >= 3.7 and bump version to 0.2.0

Runtimes OpenCL
#1
#2

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LGTM.

#3

Isn’t there some code in prepare_builtins that can also be removed?

Jeroen

#4

Isn’t there some code in prepare_builtins that can also be removed?

Indeed, I forgot it.
Thanks