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horzstride
2016 Aug 22
4
How to describe the RegisterInfo?
...pairs of L/H.
r10: L H L H L H L H
r11: L H L H L H L H
below two instructions will extract the low 32bit and high 32bit part.
mov(8 | M0) r12.0<1>, r10.0<8,4,2>:D
mov(8 | M0) r13.0<1>, r10.1<8,4,2>:D
(The format of a register region is RegNum.regSubNum<vertStride, width,
horzStride>:type)
(Note the regSubNum is measured in units of the register type here.)
then r12/r13 contains the result vector components.
You can refer below link for more details on Intel GPU assembly and
register usage:
https://software.intel.com/en-us/articles/introduction-to-gen-assembly
I notice th...