--- Comment #3 from UroŇ° Bizjak <ubizjak at gmail dot com> ---
(In reply to David Binderman from comment #0)
> Created attachment 39831 [details]
> C source code after creduce
> The attached C code, when compiled by gcc trunk dated 20161018,
> and compiler flags -O3 -march=native, does this:

BTW: Please note that -march=native gets replaced with true -march=... and a
bunch of -mABI options by the compiler driver. 

You can see options, passed by the driver, by adding -### to the compiler
flags. Please report -march=... that is determined by the driver. Usually, this
is enough to reproduce the bug, for some unusual targets (e.g. emulators)
please also report other -m... options. 

> The processor has this in /proc/cpuinfo

This info is useless and redundant when true -march= is reported.

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