[WIP] x86 optimization for gemm int8 #2312

	name: linux-x64-cpu-gcc-sde
	on:
	push:
	branches: [master]
	paths:
	- '.github/workflows/linux-x64-cpu-gcc-sde.yml'
	- 'CMakeLists.txt'
	- 'cmake/**'
	- 'src/*'
	- 'src/layer/*'
	- 'src/layer/x86/**'
	- 'tests/**'
	- 'tools/**'
	- '!tools/pnnx/**'
	- 'examples/**'
	pull_request:
	branches: [master]
	paths:
	- '.github/workflows/linux-x64-cpu-gcc-sde.yml'
	- 'CMakeLists.txt'
	- 'cmake/**'
	- 'src/*'
	- 'src/layer/*'
	- 'src/layer/x86/**'
	- 'tests/**'
	- 'tools/**'
	- '!tools/pnnx/**'
	- 'examples/**'
	concurrency:
	group: linux-x64-cpu-gcc-sde-${{ github.ref }}
	cancel-in-progress: true
	permissions:
	contents: read

	jobs:
	linux-gcc-sde:
	runs-on: ubuntu-22.04
	steps:
	- uses: actions/checkout@v4
	- name: update
	run: sudo apt-get update
	- name: gcc12
	run: sudo apt-get install gcc-12 g++-12
	- name: Setup SDE binaries
	uses: petarpetrovt/setup-sde@v2.4
	- name: build-avx512-spr
	env:
	CC: gcc-12
	CXX: g++-12
	run: \|
	mkdir build-avx512-spr && cd build-avx512-spr
	cmake -DNCNN_BUILD_TESTS=ON ..
	cmake --build . -j $(nproc)
	- name: test-avx512-spr
	run: \|
	cd build-avx512-spr
	TESTS_EXECUTABLE_LOADER=$SDE_PATH/sde64 TESTS_EXECUTABLE_LOADER_ARGUMENTS="-spr;--" ctest --output-on-failure -j $(nproc)

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