[issue32616] Significant performance problems with Python 2.7 built with clang 3.x or 4.x

[Ned Deily]

Ned Deily <nad at python.org> added the comment:

Can anyone explain what the difference is between 2.7 and 3.6, i.e. why there is the performance regression for 2.7 but not for 3.6 using the same compiler instance?  It would be better to understand and solve that problem rather than trying to special case compiler versions.

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue32616>
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