------- Additional Comments From steven at gcc dot gnu dot org 2005-04-10
17:52 -------
My RTL-fu is way below par, so perhaps this doesn't make sense at all, but...
It seems that emit_move_insn must always produce valid move insns. So it
should check that an immediate is a valid PIC operand if -fPIC. In this case
I'd say LEGITIMATE_CONSTANT_P is the wrong target macro to use. So you would
have this instead:
Index: expr.c
===================================================================
RCS file: /cvs/gcc/gcc/gcc/expr.c,v
retrieving revision 1.783
diff -u -3 -p -r1.783 expr.c
--- expr.c 30 Mar 2005 21:34:23 -0000 1.783
+++ expr.c 10 Apr 2005 17:51:01 -0000
@@ -3093,7 +3093,8 @@ emit_move_insn (rtx x, rtx y)
y_cst = y;
- if (!LEGITIMATE_CONSTANT_P (y))
+ if ((!flag_pic && !LEGITIMATE_CONSTANT_P (y))
+ || (flag_pic && !LEGITIMATE_PIC_OPERAND_P (y)))
{
y = force_const_mem (mode, y);
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20928
