On Fri, May 26, 2017 at 11:52 AM, Marc Glisse <marc.gli...@inria.fr> wrote: > Hello, > > coming back to https://gcc.gnu.org/ml/gcc-patches/2014-02/msg01378.html , > Richard wanted a complete set of fenv functions instead of just the 2 I was > interested in. However, most functions in fenv.h handle a struch fenv_t or > fexcept_t, which makes them inconvenient to handle as builtins.
We do have stdio functions having FILE * arguments. There's 'fileptr_type_node' (pointer to incomplete struct) to handle that. I suppose rth was looking for sth similar for fenv_t * and fexcept_t *. I guess it's hard to implement a dependency scheme other than "memory" without seeing the full set of functions. > Similarly, I > don't see div as a builtin in that file, only FILE* has special code, but > that doesn't seem worth the trouble here. So I am only declaring the 5 > "simple" functions, with minimal properties: leaf, nothrow, and for > fegetround pure (glibc already declares it that way). We can then discuss > the safety of future optimizations on a case by case basis. +DEF_C99_BUILTIN (BUILT_IN_FERAISEEXCEPT, "feraiseexcept", BT_FN_INT_INT, ATTR_NOTHROW_LEAF_LIST) I think feraiseexcept shouldn't be nothrow? But it may be pure? Likewise fetestexcept may be pure? Thanks, Richard. > 2017-05-29 Marc Glisse <marc.gli...@inria.fr> > > * builtins.def (BUILT_IN_FECLEAREXCEPT, BUILT_IN_FEGETROUND, > BUILT_IN_FERAISEEXCEPT, BUILT_IN_FESETROUND, > BUILT_IN_FETESTEXCEPT): New builtins. > > -- > Marc Glisse
