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I'm afraid I don't know how to tweak a testcase >> to properly deal with that. Perhaps (like iirc was suggested elsewhere) >> -mno-avx512f, but honestly this approach feels clumsy to me. Cc-ing >> Hongtao, who I think suggested that approach elsewhere. >> >>> FAIL: gcc.target/i386/pr53652-1.c scan-assembler-times pandn[ \\t] 2 > There're a false dependence when using pternlog for andnot(and other > newly added) pattern, i'm working on a patch to avoid that(PR110438). > Let me handle the test case. Of course I'm happy to see you handle the testcase, but if you don't mind I'm curious towards the connection you see between that false dependency issue and the adjustments missing in this (and other) testcase(s). Jan