By Tom Wilson and Julie Zhu LONDON/HONG KONG (Reuters) -World shares gained on Tuesday as investors weighed up the extent to which the Omicron coronavirus variant would hit economies around the world, with the dollar softening as appetite for riskier assets made a cautious return. The broader Euro STOXX 600 rose as much as 1.1%. German DAX’s added 0.8%, with London’s FTSE climbing 0.9%. Semiconductor and chip stocks grabbed the limelight, with ASML Holding, ASM International, and STMicroelectronics all up around 2% after a positive trading update from U.S. chipmaker Micron Technology. “It’s a …

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