[PATCH] Handle MEM_REF with non-zero offset in expand_debug_expr
Jakub Jelinek
jakub@redhat.com
Thu Nov 4 22:39:00 GMT 2010
Hi!
Each of x86_64-linux and i686-linux bootstrap/regtests triggers
MEM_REF with non-zero offset more than 68000 times, so IMNSHO it
is worth to handle it.
Fixed thusly, bootstrapped/regtested it on x86_64-linux and i686-linux, ok
for trunk?
2010-11-04 Jakub Jelinek <jakub@redhat.com>
* cfgexpand.c (expand_debug_expr): Handle MEM_REF
with non-zero offset.
--- gcc/cfgexpand.c.jj 2010-11-04 20:12:19.000000000 +0100
+++ gcc/cfgexpand.c 2010-11-04 20:46:12.160386088 +0100
@@ -2552,15 +2552,20 @@ expand_debug_expr (tree exp)
}
case MEM_REF:
- /* ??? FIXME. */
- if (!integer_zerop (TREE_OPERAND (exp, 1)))
- return NULL;
- /* Fallthru. */
case INDIRECT_REF:
op0 = expand_debug_expr (TREE_OPERAND (exp, 0));
if (!op0)
return NULL;
+ if (TREE_CODE (exp) == MEM_REF)
+ {
+ op1 = expand_debug_expr (TREE_OPERAND (exp, 1));
+ if (!op1 || !CONST_INT_P (op1))
+ return NULL;
+
+ op0 = plus_constant (op0, INTVAL (op1));
+ }
+
if (POINTER_TYPE_P (TREE_TYPE (exp)))
as = TYPE_ADDR_SPACE (TREE_TYPE (TREE_TYPE (exp)));
else
Jakub
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