Comment by jimktrains2 | Hacker News Reader

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Comment by jimktrains2 | Hacker News Reader

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I thought TEST did a subtract, setting the appropriate flags and discarded the result?

You're probably thinking of the CMP instruction: https://www.aldeid.com/wiki/X86-assembly/Instructions/cmp

TEST does a boolean AND test: https://www.aldeid.com/wiki/X86-assembly/Instructions/test

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