llvm/llvm-project

Enable exp10 libcall recognition on linux

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#64.677 aberto em 14 de ago. de 2023

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floating-pointgood first issuellvm:codegenllvm:optimizationsplatform:linux

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Description

TargetLibraryInfo does not report exp10/exp10f/exp10l as available on Linux, disabling all special library call optimizations:

https://github.com/llvm/llvm-project/blob/c0682840877a21960f4c21a97b5f497d4ccc82d5/llvm/lib/Analysis/TargetLibraryInfo.cpp#L550

The reason cited is these were buggy in glibc prior to version 2.18. Version 2.18 celebrated its 10th birthday this weekend, so I think it's alright to just drop this restriction.

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