Fix lowprecision build after #4014 #10773

Job	Run time
Conformance Build AVX3	1m 9s
Conformance Build AVX2	54s
Conformance Build SSE4	58s
Conformance Build SSSE3	1m 15s
Warmup caches	1m 11s
Conformance Build EMU128	54s
Conformance Build SCALAR	1m 20s
Conformance Build SCALAR_ASAN	1m 19s
Conformance Test main_level5 on AVX3	1m 30s
Conformance Test main_level5 on AVX2	1m 22s
Conformance Test main_level5 on SSE4	1m 30s
Conformance Test main_level5 on SSSE3	1m 35s
Conformance Test main_level5 on EMU128	1m 27s
Conformance Test main_level5 on SCALAR	1m 30s
Conformance Test main_level5 on SCALAR_ASAN	2m 0s
Conformance Test main_level10 on AVX3	1m 39s
Conformance Test main_level10 on AVX2	1m 28s
Conformance Test main_level10 on SSE4	1m 33s
Conformance Test main_level10 on SSSE3	1m 39s
Conformance Test main_level10 on EMU128	1m 37s
Conformance Test main_level10 on SCALAR	1m 24s
Conformance Test main_level10 on SCALAR_ASAN	1m 54s
	31m 8s

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