when we thought we could earlier, then we must always iterate through
the loop at least one more time.
x86 should bootstrap with -O9 -fomit-frame-pointer again.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@23552
138bc75d-0d04-0410-961f-
82ee72b054a4
+Sat Nov 7 00:54:55 1998 Jeffrey A Law (law@cygnus.com)
+
+ * reload1.c (reload): If we can not perform a particular elimination
+ when we thought we could earlier, then we must always iterate through
+ the loop at least one more time.
+
Fri Nov 6 19:37:33 1998 Richard Henderson <rth@cygnus.com>
* alpha.c (add_operand): Simplify the CONST_INT match.
{
spill_hard_reg (i, dumpfile, 1);
did_spill = 1;
+
+ /* Regardless of the state of spills, if we previously had
+ a register that we thought we could eliminate, but no can
+ not eliminate, we must run another pass.
+
+ Consider pseudos which have an entry in reg_equiv_* which
+ reference an eliminable register. We must make another pass
+ to update reg_equiv_* so that we do not substitute in the
+ old value from when we thought the elimination could be
+ performed. */
+ something_changed = 1;
}
}