------- Comment #1 from pinskia at gcc dot gnu dot org 2006-12-07 22:40 -------
This is at most a GNU binutils bug. Please file it with them at
http://sourceware.org/bugzilla/ .
Also IIRC fdivp's arguments are swapped in AT&T asm mode because of some
historical accident.
See the comment in i386.c:
/* The SystemV/386 SVR3.2 assembler, and probably all AT&T
derived assemblers, confusingly reverse the direction of
the operation for fsub{r} and fdiv{r} when the
destination register is not st(0). The Intel assembler
doesn't have this brain damage. Read !SYSV386_COMPAT to
figure out what the hardware really does. */
Also:
#ifndef SYSV386_COMPAT
/* Set to 1 for compatibility with brain-damaged assemblers. No-one
wants to fix the assemblers because that causes incompatibility
with gcc. No-one wants to fix gcc because that causes
incompatibility with assemblers... You can use the option of
-DSYSV386_COMPAT=0 if you recompile both gcc and gas this way. */
#define SYSV386_COMPAT 1
#endif
--
pinskia at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution| |INVALID
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30117
