speculative : add grammar support #4848

Job	Run time
macOS-latest-cmake	3m 4s
macOS-latest-make	3m 2s
ubuntu-focal-make	3m 1s
ubuntu-latest-cmake	2m 11s
ubuntu-latest-cmake-mpi (mpich)	2m 2s
ubuntu-latest-cmake-mpi (libopenmpi-dev)	2m 29s
ubuntu-latest-cmake-sanitizer (ADDRESS, Debug)	2m 2s
ubuntu-latest-cmake-sanitizer (ADDRESS, Release)	3m 56s
ubuntu-latest-cmake-sanitizer (THREAD, Debug)	1m 48s
ubuntu-latest-cmake-sanitizer (THREAD, Release)	2m 10s
ubuntu-latest-cmake-sanitizer (UNDEFINED, Debug)	2m 2s
ubuntu-latest-cmake-sanitizer (UNDEFINED, Release)	5m 11s
windows-latest-cmake (noavx, -DLLAMA_BUILD_SERVER=ON -DLLAMA_AVX=OFF -DLLAMA_AVX2=OFF -DLLAMA_FMA...	2m 53s
windows-latest-cmake (avx2, -DLLAMA_BUILD_SERVER=ON)	3m 43s
windows-latest-cmake (avx, -DLLAMA_BUILD_SERVER=ON -DLLAMA_AVX2=OFF)	1m 54s
windows-latest-cmake (avx512, -DLLAMA_BUILD_SERVER=ON -DLLAMA_AVX512=ON -DBUILD_SHARED_LIBS=ON)	3m 14s
windows-latest-cmake (clblast, -DLLAMA_BUILD_SERVER=ON -DLLAMA_CLBLAST=ON -DCMAKE_PREFIX_PATH="$e...	3m 32s
windows-latest-cmake (openblas, -DLLAMA_BUILD_SERVER=ON -DLLAMA_BLAS=ON -DLLAMA_BLAS_VENDOR=OpenB...	3m 28s
windows-latest-cmake-cublas (12.1.0, cublas)	31m 49s
windows-latest-cmake-cublas (11.7.1, cublas)	42m 51s
release	0s
	2h 6m 22s

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