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2010-09-22 Chung-Lin Tang <cltang@codesourcery.com>
Backport from mainline:
2010-09-22 Chung-Lin Tang <cltang@codesourcery.com>
gcc/
* postreload.c (move2add_note_store): Add reg_symbol_ref[] checks
to update conditions. Fix reg_mode[] check.
=== modified file 'gcc/postreload.c'
Index: gcc-4.5/gcc/postreload.c
===================================================================
--- gcc-4.5.orig/gcc/postreload.c
+++ gcc-4.5/gcc/postreload.c
@@ -2103,15 +2103,17 @@ move2add_note_store (rtx dst, const_rtx
&& (MODES_OK_FOR_MOVE2ADD
(dst_mode, reg_mode[REGNO (XEXP (src, 1))])))
{
- if (reg_base_reg[REGNO (XEXP (src, 1))] < 0)
+ if (reg_base_reg[REGNO (XEXP (src, 1))] < 0
+ && reg_symbol_ref[REGNO (XEXP (src, 1))] == NULL_RTX)
offset = reg_offset[REGNO (XEXP (src, 1))];
/* Maybe the first register is known to be a
constant. */
else if (reg_set_luid[REGNO (base_reg)]
> move2add_last_label_luid
&& (MODES_OK_FOR_MOVE2ADD
- (dst_mode, reg_mode[REGNO (XEXP (src, 1))]))
- && reg_base_reg[REGNO (base_reg)] < 0)
+ (dst_mode, reg_mode[REGNO (base_reg)]))
+ && reg_base_reg[REGNO (base_reg)] < 0
+ && reg_symbol_ref[REGNO (base_reg)] == NULL_RTX)
{
offset = reg_offset[REGNO (base_reg)];
base_reg = XEXP (src, 1);
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