Co-authored-by: Sugar-Baby <87747602+Sugar-Baby@users.noreply.github.com>
Co-authored-by: AtomAlpaca <66774326+AtomAlpaca@users.noreply.github.com>

* fix 1d 2d cstep

* fix ranged cstep

* add int8 definitions
* packing vulkan int8/int32, quantize vulkan
* vulkan dequantize
* requantize vulkan

* fix pyncnn build

vkimagemat was originally used as a mat storage in the hope of improving performance on old adreno gpus, but in fact it is slower than the cpu in most cases and is no longer suitable for the latest adreno architecture and large shapes

* fix sub mat cstep
* fix embed
* rnn/lstm/gru int8 test without rounding diversity

Co-authored-by: mmyyy22 <mmyyy22@users.noreply.github.com>
Co-authored-by: nihui <nihuini@tencent.com>

* skip dynamic tensor index

* handle clone oom

* check image fp16

* cmake check compiler test cannot be optimized out
* drop requant pack4

* restrict one dim quantize scale size

* sse2 requantize pack8

* remove dequantize pack8 test, seems to be useless

* skip round problem
* sde on ubuntu24

* zfh zvfh xtheadvector infra
* dispatch for rvv and xtheadvector
* dispatch for non-vector zfh
* port xtheadvector recp rsqrt trunc
* general rvv gemm
* c906 and c910 ci
* old tuple code clean
* update riscv64 ci
* update build doc
* drop old th1520 toolchain

* only supports hann, hamming and all-one window
* inverse spectrogram does not support length parameter
* spectrogram always returns torch.view_as_real(out) as ncnn does not support complex typed mat yet
* inverse spectrogram always accepts torch.view_as_complex(in) as ncnn does not support complex typed mat yet

* x86 vulkan fallback
* comment about bf16s

* quantize gemm

* write gemm quantize scales

* update doc

* less openmp args

* x86 riscv fallback

* skip gemm vulkan int8

* fix noint8 test, fix arm bf16 test

* enable vfpv4 on neon build only

* fix gemm vulkan without C

* fp16 pack8 output

* enable elempack=8 only for asimdhp+

* tiled gemm int8 test

* opt arm64 tiles, fix asimdhp dispatch

* fix potential fp16s bf16s conflicts on armv7 vfpv4

* but prefer fp16 on armv8.2

* update swiftshader

* skip vs2017 swiftshader

* test mha oom