[Bug target/48139] __builtin_lrintf() becomes a library call, not an cvtss2si instruction

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48139

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |jakub at gcc dot gnu.org

--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-03-16 23:35:00 UTC ---
POSIX says:
These functions shall fail if:

Domain Error
The x argument is NaN or ±Inf, or the correct value is not representable as an
integer.

If  the  integer  expression  (math_errhandling  & MATH_ERRNO) is non-zero,
then errno shall be set to [EDOM]. If the integer
expression (math_errhandling & MATH_ERREXCEPT) is non-zero, then the invalid
floating-point exception shall be raised.

so we can't optimize it without -fno-math-errno.