Craig Topper 18e8d02e8c [X86] Pass v32i16/v64i8 in zmm registers on KNL target. ...

gcc and icc pass these types in zmm registers in zmm registers.

This patch implements a quick hack to override the register
type before calling convention handling to one that is legal.
Longer term we might want to do something similar to 256-bit
integer registers on AVX1 where we just split all the operations.

Fixes PR42957

Differential Revision: https://reviews.llvm.org/D66708

llvm-svn: 370495

2019-08-30 17:35:08 +00:00

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