strcmp optimization for riscv #98

Job	Run time
cache-maker	5s
minsize-linux (./.github/do-linux)	1h 56m 3s
cmake-linux (./.github/do-cmake-linux -DCMAKE_BUILD_TYPE=RelWithDebInfo)	9m 40s
minsize-linux (-Dio-float-exact=false -Dio-long-long=true -Dio-percent-b=true -Dio-long-double=tr...	1h 34m 37s
release-linux (./.github/do-linux)	1h 59m 28s
cmake-linux (./.github/do-cmake-linux -DCMAKE_BUILD_TYPE=MinSizeRel)	9m 27s
minsize-linux (-Dformat-default=integer -Dfreestanding=true -Dposix-io=false -Dnewlib-obsolete-ma...	1h 55m 17s
release-linux (-Dio-float-exact=false -Dio-long-long=true -Dio-percent-b=true -Dio-long-double=tr...	1h 38m 25s
cmake-linux (-D__IO_FLOAT=y -D_IO_FLOAT_EXACT=n -D_WANT_IO_LONG_LONG=y -D_MB_CAPABLE=y -D_WANT_IO...	10m 3s
minsize-linux (-Dtinystdio=false, ./.github/do-linux)	1h 9m 38s
cmake-linux (-D__IO_FLOAT=y -D_IO_FLOAT_EXACT=n -D_WANT_IO_LONG_LONG=y -D_MB_CAPABLE=y -D_WANT_IO...	9m 17s
release-linux (-Dformat-default=integer -Dfreestanding=true -Dposix-io=false -Dnewlib-obsolete-ma...	1h 54m 20s
minsize-linux (-Dtinystdio=false -Dnewlib-io-float=true -Dio-long-long=true -Dio-long-double=true...	54m 16s
release-linux (-Dtinystdio=false, ./.github/do-linux)	1h 17m 18s
release-linux (-Dtinystdio=false -Dnewlib-io-float=true -Dio-long-long=true -Dio-long-double=true...	56m 44s
	15h 54m 38s

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