https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93663
Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Component|target |middle-end
--- Comment #2 from Martin Sebor <msebor at gcc dot gnu.org> ---
Whoops, I got the ChangeLog for r274927 wrong. It's actually this:
Builtin function roundeven folding implementation
2019-08-26 Tejas Joshi <tejasjoshi9...@gmail.com>
* builtins.c (mathfn_built_in_2): Added CASE_MATHFN_FLOATN
for ROUNDEVEN.
* builtins.def: Added function definitions for roundeven function
variants.
* fold-const-call.c (fold_const_call_ss): Added case for roundeven
function call. Adjust condition for floor, ceil, trunc and round.
* fold-const.c (negate_mathfn_p): Added case for roundeven function.
(tree_call_nonnegative_warnv_p): Added case for roundeven function.
(integer_valued_real_call_p): Added case for roundeven function.
* real.c (is_even): New function. Returns true if real number is even,
otherwise returns false.
(is_halfway_below): New function. Returns true if real number is
halfway between two integers, else return false.
(real_roundeven): New function. Round real number to nearest integer,
rounding halfway cases towards even.
* real.h (real_value): Added descriptive comments. Added function
declaration for roundeven function.
* doc/extend.texi (Other Builtins): List roundeven variants among
functions which can be handled as builtins.
