AVX512 C4 vpmaddubsw bit GEMM use uint4 in low bits #27

Job	Run time
build-and-test / cmake-linux-aarch64	13m 0s
build-and-test / cmake-linux-armhf	10m 44s
build-and-test / cmake-linux-local	13m 43s
build-and-test / cmake-linux-riscv64	7m 41s
build-and-test / cmake-android (build-android-arm64.sh)	11m 13s
build-and-test / cmake-android (build-android-armv7.sh)	10m 37s
build-and-test / cmake-ios-arm64	4m 57s
build-and-test / cmake-android (build-android-x86.sh)	12m 0s
build-and-test / cmake-linux-riscv64-rvv	7m 49s
build-and-test / cmake-macos-arm64	10m 6s
build-and-test / cmake-windows-arm64	9m 49s
build-and-test / cmake-windows-x86	11m 7s
build-and-test / cmake-windows-x64	10m 54s
build-and-test / bazel-linux-aarch64	10m 49s
build-and-test / bazel-linux-x86_64	9m 55s
build-and-test / cmake-ios-x86_64	7m 26s
build-and-test / bazel-linux-x86_64-gcc-9	5m 21s
	2h 47m 11s

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