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2019 Sep 27
4
Dealing with boolean values in GlobalISel
Hi, I’ve been thinking about what the strategy to use for boolean values in GlobalISel. There are a few semantic and mechanical issues I’ve encountered. For background, on AMDGPU, there are two kinds of bool/s1 values. Contextually, a real boolean value will either be a 1-bit scalar condition (in a non-allocatable physical condition register, which will need to...