[LLVMdev] question about Type::canLoslesslyBitCastTo

[Akira Hatanaka]

Type::canLoslesslyBitCastTo(Type *Ty) in lib/VMCore/Type.cpp always returns
false when it checks whether an integer can be bitcast to a vector or vice
versa.

For example, (i32 => v2i16) or (v2i16 => i32) is false.

But it seems that it returns true if it is checking conversion between two
vector types which have the same size.

For example, (v4i8 => v2i16) would return true.

What is the rationale behind this?
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