Merge pull request #5407 from nakagawa-fj/feature/gemm_divide_rate_fo… #5974

Job	Run time
neoverse_build	7m 45s
msys2 (CLANG64, int64, Release)	31m 16s
msys2 (UCRT64, int64, Release)	46m 27s
msys2 (UCRT64, int32, Release)	45m 36s
msys2 (CLANG64, int32, Release)	31m 11s
build (ubuntu-latest, gfortran, cmake)	46m 23s
msys2 (UCRT64, int32, None, mingw-w64-ucrt-x86_64, fc)	41m 26s
build (macos-latest, gfortran, cmake)	25m 59s
msys2 (MINGW32, int32, Release)	40m 57s
build (ubuntu-latest, flang, make)	9m 17s
build (ubuntu-latest, flang, cmake)	19m 36s
build (macos-latest, gfortran, make)	6m 47s
build (ubuntu-latest, gfortran, make)	21m 40s
cross_build (riscv64, riscv64-linux-gnu, TARGET=RISCV64_GENERIC)	3m 58s
cross_build (alpha, alpha-linux-gnu, TARGET=EV4)	3m 32s
cross_build (mipsel, mipsel-linux-gnu, TARGET=MIPS1004K)	4m 19s
cross_build (mips64el, mips64el-linux-gnuabi64, DYNAMIC_ARCH=1 TARGET=GENERIC)	4m 32s
	6h 30m 41s

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