[PATCH] Support for floating point vector logical operations

[Joey Gouly]

Hi all!

This patch adds support for floating point logical operations for OpenCL
1.2, and errors for OpenCL 1.1.

VisitUnaryLNot, VisitBinLAnd and VisitBinLOr were changed to support
floating point types.

In lib/Sema/SemaExpr.cpp, CheckVectorLogicalOperands, there was a line:
> if (vType.isNull() || vType->isFloatingType())
I don't think the isFloatingType() could ever be true, since the type from
CheckVectorOperands would always be a VectorType?
I removed this part, and did a build/test and nothing failed, so I think it
was dead code.

Any comments?

Thanks,
Joey
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