[llvm-commits] [PATCH] At beginning of SelectionDAGISel::LowerArguments, see if return values can be lowered to registers

[Kenneth Uildriks]

Right now, it simply asserts if the return values cannot be lowered.
I'm working on code that will perform an sret-demotion on function
definitions and function calls if the return values cannot be lowered
to registers; this will allow arbitrary-sized struct returns to get
through codegen without crashing.
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