llvm/llvm-project
在 GitHub 查看[InstCombiner] foldIntrinsicIsFPClass - incorrect submasking of FPClassTest masks
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#189,949 创建于 2026年4月1日
floating-pointgood first issuellvm:instcombine
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描述
As mentioned here when creating the DAG equivalent: https://github.com/llvm/llvm-project/pull/189944#discussion_r3021637130
We shouldn't be looking for equality, we should be testing that they are a subset of the known classes: