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After doing a left shift by the number of bits returned by clz, only bits set to zero can be shifted out, so if the register was nonzero to start with (which is checked), it can't become zero here.
ef603481
After doing a left shift by the number of bits returned by clz, only bits set to zero can be shifted out, so if the register was nonzero to start with (which is checked), it can't become zero here.
VideoLAN code repository instance