Fix left shift overflows the capacity of 'unsigned int' warnings. #2870

Job	Run time
Ubuntu GCC	18s
Ubuntu 20.04 GCC	12s
Ubuntu GCC OSB	15s
Ubuntu GCC Compat No Opt	7s
Ubuntu GCC ARM SF	26s
Ubuntu GCC ARM SF Compat No Opt	33s
Ubuntu GCC ARM HF	32s
Ubuntu GCC ARM HF No ACLE	29s
Ubuntu GCC ARM HF No NEON	34s
Ubuntu GCC ARM HF Compat No Opt	37s
Ubuntu GCC AARCH64	32s
Ubuntu GCC AARCH64 No ACLE	27s
Ubuntu GCC AARCH64 No NEON	28s
Ubuntu GCC AARCH64 Compat No Opt	27s
Ubuntu GCC MIPS	27s
Ubuntu GCC MIPS64	27s
Ubuntu GCC PPC	37s
Ubuntu GCC PPC No Power8	27s
Ubuntu GCC PPC64	1m 32s
Ubuntu GCC PPC64LE	29s
Ubuntu GCC S390X	23s
Ubuntu GCC S390X No vectorized CRC32	27s
Ubuntu GCC S390X DFLTCC	25s
Ubuntu GCC S390X DFLTCC Compat	27s
Ubuntu Emscripten WASM32	43s
macOS GCC Symbol Prefix	59s
macOS GCC Symbol Prefix (ARM64)	34s
macOS GCC Symbol Prefix & Compat	1m 6s
macOS GCC Symbol Prefix & Compat (ARM64)	38s
macOS GCC	1m 0s
macOS GCC (ARM64)	31s
	17m 9s

Provide feedback