MacDue wrote: > > Have you checked the flang driver? Is it not applicable there since errno > > is not used in Flang? > > We don't support the gfortran extension for checking errno in flang and I > can't see another way of checking it portably, so I wonder if we should just > have this flag on by default in flang in general? It shouldn't provide any > observable change and might increase performance as far as I can tell.
As far as I can tell from looking at the `flang` driver, it already defaults to the equivalent of `-fno-math-errno` (looks like there's no way to set `-fmath-errno` at all). That's corroborated by looking at the LLVM IR for a call to `sin` which uses the non-errno setting LLVM intrinsic by default: https://godbolt.org/z/dvTvP3vPr. https://github.com/llvm/llvm-project/pull/112580 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
