[Bug tree-optimization/71691] [6/7 Regression] wrong code at -O3 in both 32-bit and 64-bit modes on x86_64-linux-gnu (Floating point exception)

[aldyh at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71691

Aldy Hernandez <aldyh at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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             Status|WAITING                     |NEW

--- Comment #20 from Aldy Hernandez <aldyh at gcc dot gnu.org> ---
A short recap for anyone wanting to tackle this:

Jeff had an initial patch here:
https://gcc.gnu.org/ml/gcc-patches/2016-08/msg01359.html

Then I proposed an on-demand approach here:
https://gcc.gnu.org/ml/gcc-patches/2016-12/msg01481.html

...which continued onto various suggestions through here:
https://gcc.gnu.org/ml/gcc-patches/2017-01/msg00104.html