https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64442
Manuel López-Ibáñez changed:
What|Removed |Added
CC||manu at gcc dot gnu.org
--- Commen
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64442
Colin Pitrat changed:
What|Removed |Added
Status|UNCONFIRMED |RESOLVED
Resolution|---
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64442
--- Comment #3 from Mikael Pettersson ---
See PR323 and https://gcc.gnu.org/bugs/#known
You could experiment with -ffloat-store, -mpc64, or -msse2 (if your CPU
supports SSE2, which it should if it isn't ancient).
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64442
--- Comment #2 from Colin Pitrat ---
Yes I'm building on i686.
But I thought -O1 and -O2 were safe optimization that weren't supposed to
change the behaviour.
Moreover, I'm surprised that providing the list of -f flags -O1 is supposed to
enable
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64442
--- Comment #1 from Mikael Pettersson ---
Are you compiling on 32-bit x86? I can reproduce on m68k, but not on x86_64
(even with -m32) or on ARMv5. I suspect you're seeing the effects of excess
precision of the x87 FPU (much like the m68k FPU).
