On Thu, 10 Aug 2017, Jackson Woodruff wrote: > > We also change: > > > > x / (- y) -> (-x) / y > > > > Which requires -fno-trapping-math.
I don't see why that requires -fno-trapping-math. The exceptions should be identical from both variants, as should the result, as far as defined by C or IEEE 754 (it's possible it might affect the sign of a NaN result on some architectures, but only where that sign is unspecified in C and IEEE 754 terms, so such a change is OK). -- Joseph S. Myers jos...@codesourcery.com
