http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55939
--- Comment #20 from joseph at codesourcery dot com <joseph at codesourcery dot com> 2013-01-30 21:11:31 UTC --- On Tue, 29 Jan 2013, jakub at gcc dot gnu.org wrote: > Perhaps -fexcess-precision=standard might fix this too (and be less > expensive). Note that -fexcess-precision=standard is not fully implemented for m68k: the back-end patterns claiming to carry out SFmode/DFmode operations, that actually do XFmode arithmetic, haven't been disabled for -fexcess-precision=standard as I did for x86 (along with some related fixes for conversions to SFmode/DFmode). While the disabling of SFmode / DFmode operations is just for safety - if the architecture-independent parts of GCC are working correctly, it shouldn't matter whether they are enabled or not because there will be no arithmetic in those modes in the GIMPLE anyway - I don't know if m68k needs similar fixes to conversion operations.
