[Simd] Ignore value-initialization issues in vectorclass.
Value-initialized Vectorclass simd types are not always initialized. The
reason is that vectorclass defines default-constructors for its Simd types
with empty body and no member initializers. Value-initialization will see
those constructors and invoke default-initialization. As the mask types
sometimes just contain an unsigned short or similar fundamental data type,
default-initializing that does nothing and leaves it inintialized.
To make value-initialization work reliably, vectorclass would need to do one of two things:
- Make sure the default-constructor is implicitly or explicitly defaulted. That would mean value-initialization would invoke zero-initialization before default-inizialization, which would clear the member
- Provide a default initializer when declaring the member, which would then be used when the class does not define an initializer for the member in the default-constructor's member-initializer-list.
Since I can't really fix vectorclass, work around this issue by using
direct-initialization with an initializer (Simd::Scalar<V>(0)) to
initialize simd types.
Edited by Jö Fahlke