[issue24915] Profile Guided Optimization active by-default
Skip Montanaro
report at bugs.python.org
Sun Aug 23 15:19:50 CEST 2015
Skip Montanaro added the comment:
Is this supposed to work on Macs using Apple's version of gcc? I've got the latest version of Yosemite and XCode, and am getting these warnings when trying to build 2.7:
clang: warning: argument unused during compilation: '-fprofile-generate'
Should this be enabled using a configure check? Perhaps gcc/clang supports this but spells the feature differently. gcc --help tells me:
% gcc --help | egrep profile
-fprofile-instr-generate
-fprofile-instr-use=<value>
Use instrumentation data for profile-guided optimization
-fprofile-sample-use=<value>
Enable sample-based profile guided optimizations
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nosy: +skip.montanaro
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<http://bugs.python.org/issue24915>
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