[SYCL][CUDA][HIP][libclc] Rename libclc NonUniform binops to KHR extensions

[steffenlarsen]

#5705 changed the use of NonUniform group binary operators to the KHR extension operators. These changes rename the implementation of these in libclc for both amdgcn and PTX to the new naming.

[JackAKirk]

LGTM I've just noticed that in both files __CLC_SUBGROUP_COLLECTIVE is using IMul/FMul rather than IMulKHR/FMulKHR. Perhaps it would be good to change this here too?

[steffenlarsen]

LGTM I've just noticed that in both files __CLC_SUBGROUP_COLLECTIVE is using IMul/FMul rather than IMulKHR/FMulKHR. Perhaps it would be good to change this here too?

I am not actually sure why this distinction is here, as the logical operators use the same name for subgroup collectives. I don't mind changing it, though I wonder if there is a reason for the different approach.

[JackAKirk]

LGTM I've just noticed that in both files __CLC_SUBGROUP_COLLECTIVE is using IMul/FMul rather than IMulKHR/FMulKHR. Perhaps it would be good to change this here too?

I am not actually sure why this distinction is here, as the logical operators use the same name for subgroup collectives. I don't mind changing it, though I wonder if there is a reason for the different approach.

Yes I don't know either, I don't see a reason for it being different.