Fangrui Song 1f333562de [PowerPC] Support constraint code "ww" ...

Summary:
"ww" and "ws" are both constraint codes for VSX vector registers that
hold scalar double data. "ww" is preferred for float while "ws" is
preferred for double.

Reviewed By: jsji

Differential Revision: https://reviews.llvm.org/D64119

llvm-svn: 365106

2019-07-04 04:44:42 +00:00

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