https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96711
--- Comment #9 from Steve Kargl <sgk at troutmask dot apl.washington.edu> --- On Wed, Aug 19, 2020 at 09:36:32PM +0000, anlauf at gcc dot gnu.org wrote: > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96711 > > --- Comment #8 from anlauf at gcc dot gnu.org --- > A very quick hack seems to solve the issue for me. For some reason the > final fold_convert seems to create a problem. Does anybody know why? > It there a shorter solution? > > diff --git a/gcc/fortran/trans-intrinsic.c b/gcc/fortran/trans-intrinsic.c > index 2483f016d8e..deb3030b75d 100644 > --- a/gcc/fortran/trans-intrinsic.c > +++ b/gcc/fortran/trans-intrinsic.c > @@ -395,11 +395,26 @@ build_round_expr (tree arg, tree restype) > fn = builtin_decl_for_precision (BUILT_IN_LROUND, argprec); > else if (resprec <= LONG_LONG_TYPE_SIZE) > fn = builtin_decl_for_precision (BUILT_IN_LLROUND, argprec); > + else if (resprec >= argprec && resprec == 128) > + { > + /* Search for a real kind suitable as temporary for conversion. */ > + int kind = -1; > + for (int i = 0; kind < 0 && gfc_real_kinds[i].kind != 0; i++) > + if (gfc_real_kinds[i].mode_precision >= resprec) > + kind = gfc_real_kinds[i].kind; > + if (kind < 0) > + gfc_internal_error ("Could not find real kind with at least %d bits", > + resprec); > + arg = fold_convert (gfc_float128_type_node, arg); > + fn = gfc_builtin_decl_for_float_kind (BUILT_IN_ROUND, kind); > + } > else > gcc_unreachable (); > > - return fold_convert (restype, build_call_expr_loc (input_location, > - fn, 1, arg)); > + return convert (restype, build_call_expr_loc (input_location, > + fn, 1, arg)); > + /* return fold_convert (restype, build_call_expr_loc (input_location, */ > + /* fn, 1, arg)); */ > } I tried an even uglier hack, and also got stumped by GIMPLE. Jakub can probably shed some light on how to handle quad precision and GIMPLE.
