floating-pointgood first issuellvm:codegenllvm:optimizationsplatform:linux
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TargetLibraryInfo does not report exp10/exp10f/exp10l as available on Linux, disabling all special library call optimizations:
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.