[aapcs64] Describe the FPMR register and the FP8 types #273
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) - Add a description of the FPMR register. The FPMR register is used to control operations with FP8 operands. It is expected that this register may need to be set more than once per function, hence it is considered a temporary register (clobbered by function calls). - Add descriptions of the modal 8-bit floating point types: scalar, short-vector, and scalable vector. The respective parameter passing rules effectively state that values of these types are passed to and returned from functions in FP/vector registers, which reflects the typical and anticipated place of such values in instruction operands.
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Add a description of the FPMR register. The FPMR register
is used to control operations with FP8 operands. It is expected
that this register may need to be set more than once per
function, hence it is considered a temporary register
(clobbered by function calls).
Add descriptions of the modal 8-bit floating point types: scalar,
short-vector, and scalable vector. The respective parameter
passing rules effectively state that values of these types are
passed to and returned from functions in FP/vector registers, which
reflects the typical and anticipated place of such values in instruction
operands.