A description from opencl 1.0 as below:
9.10.7 Vector Data Load and Store Functions
The vector data load (vloadn) and store (vstoren) functions described in table 6.14 (also listed
below) are extended to include versions that read from or write to half scalar or vector values.
The generic type gentype is extended to include half. The generic type gentypen is
extended to include half2, half4, half8 and half16.
So vloadn/vstoren support halfn.
And the latest specification 3.0.16 has the same description like:
6.15.7. Vector Data Load and Store Functions
The Built-in Vector Data Load and Store Functions table describes the list of supported functions
that allow you to read and write vector types from a pointer to memory.
The generic type name gentype indicates that the function can take any of
• char, uchar, short, ushort, int, uint, long [57] or ulong
• float or double [39]
• half [58]
All functions taking or returning half types are supported only when the cl_khr_
fp16 extension macro is supported.
as the type for the arguments.
The generic type name gentypen indicates an n-element vector of gentype elements.
The generic type name halfn indicates an n-element vector of half elements.
The suffix n is also used in the function names (i.e. vloadn, vstoren etc.), where n = 2, 3 [59], 4, 8 or
16.
But in opencl 1.2, the gentypen doesn’t include halfn:
6.12.7 Vector Data Load and Store Functions
Table 6.15 describes the list of supported functions that allow you to read and write vector types
from a pointer to memory. We use the generic type gentype to indicate the built-in data types
char, uchar, short, ushort, int, uint, long, ulong, float or
double. We use the generic type name gentypen to represent n-element vectors of
gentype elements. We use the type name halfn to represent n-element vectors of half
elements55. The suffix n is also used in the function names (i.e. vloadn, vstoren etc.), where n =
2, 3, 4, 8 or 16.
So does vloadn/vstoren support halfn in opencl1.2? (cl_khr_fp16 is enable)