https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88931
H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target| |x86-64
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-01-21
Component|c |libgcc
CC| |ubizjak at gmail dot com
Depends on|34678 |
Ever confirmed|0 |1
Summary|Failed to convert int128 to |Wrong __floattisf and
|float/double with |__floattidf are selected in
|round=FE_UPWARD/FE_TOWARDZE |libgcc
|RO |
Target Milestone|--- |9.0
--- Comment #4 from H.J. Lu <hjl.tools at gmail dot com> ---
On x86-64, wrong __floattisf and __floattidf are selected in libgcc.
They should come from soft-fp, not in libgcc2.c as
FSTYPE
FUNC (DWtype u)
{
...
}
which has no rounding mode support.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=34678
[Bug 34678] Optimization generates incorrect code with -frounding-math option
(#pragma STDC FENV_ACCESS not implemented)
