on opencl added note for pre SYCL Intel hardware

[alosslessdev]

Specify that it's for pre sycl hardware

[NeoZhangJianyu]

In OpenCL.md, the target hardware is Qualcomm GPU. No other GPUs in the scope and verified list, why you could say it supports Intel GPU?

I know OpenCL backend has supported some Intel GPU, but now you have removed it from the support list.

After you promise it, then update the doc. Instead of revert.

[savvadesogle]

I know OpenCL backend has supported some Intel GPU

C:\dev\llama_opencl\llama.cpp\build\bin\Release>llama-bench -m T:\models\lmstudio-community\gpt-oss-20b-GGUF\gpt-oss-20b-MXFP4.gguf -ngl 100 -fa 0,1
ggml_opencl: selected platform: 'Intel(R) OpenCL Graphics'

ggml_opencl: device: 'Intel(R) Arc(TM) A770 Graphics (OpenCL 3.0 NEO )'
ggml_opencl: OpenCL driver: 32.0.101.8136
ggml_opencl: vector subgroup broadcast support: false
ggml_opencl: device FP16 support: true
ggml_opencl: mem base addr align: 128
ggml_opencl: max mem alloc size: 4095 MB
ggml_opencl: device max workgroup size: 1024
ggml_opencl: SVM coarse grain buffer support: true
ggml_opencl: SVM fine grain buffer support: false
ggml_opencl: SVM fine grain system support: false
ggml_opencl: SVM atomics support: false
ggml_opencl: flattening quantized weights representation as struct of arrays (GGML_OPENCL_SOA_Q)
ggml_opencl: loading OpenCL kernels....................................................................
ggml_opencl: default device: 'Intel(R) Arc(TM) A770 Graphics (OpenCL 3.0 NEO )'

model	size	params	backend	ngl	fa	test	t/s
gpt-oss 20B MXFP4 MoE	11.27 GiB	20.91 B	OpenCL	100	0	pp512	294.04 + 1.05
gpt-oss 20B MXFP4 MoE	11.27 GiB	20.91 B	OpenCL	100	0	tg128	39.73 + 0.11
gpt-oss 20B MXFP4 MoE	11.27 GiB	20.91 B	OpenCL	100	1	pp512	290.66 + 0.49
gpt-oss 20B MXFP4 MoE	11.27 GiB	20.91 B	OpenCL	100	1	tg128	39.71 + 0.19

build: 4a4f7e6 (7409)

[NeoZhangJianyu]

Yes, I see.

I wonder why OpenCL.md mention to focus on Qualcomm Adreno GPU.
Will OpenCL backend include Intel GPU in it's scope?

I'm not the maintainer of OpenCL backend.
This comment is just a question.

[NeoZhangJianyu]

It's OK!
Provide more choice to Intel GPU users.