re PR rtl-optimization/42617 (TARGET_MEM_REF and plain INDIRECT_REFs are not handled by the RTL oracle)

2010-04-07  Richard Guenther  <rguenther@suse.de>

	PR middle-end/42617
	* expr.c (expand_expr_real_1): For TARGET_MEM_REFs with
	pointer bases build simple mem attributes to retain
	points-to information.

From-SVN: r158048
This commit is contained in:
Richard Guenther 2010-04-07 10:15:05 +00:00 committed by Richard Biener
parent 6addabbbe8
commit 83a416b095
2 changed files with 18 additions and 0 deletions

View File

@ -1,3 +1,10 @@
2010-04-07 Richard Guenther <rguenther@suse.de>
PR middle-end/42617
* expr.c (expand_expr_real_1): For TARGET_MEM_REFs with
pointer bases build simple mem attributes to retain
points-to information.
2010-04-07 Richard Guenther <rguenther@suse.de>
PR middle-end/42617

View File

@ -8730,6 +8730,7 @@ expand_expr_real_1 (tree exp, rtx target, enum machine_mode tmode,
{
addr_space_t as = TYPE_ADDR_SPACE (TREE_TYPE (exp));
struct mem_address addr;
tree base;
get_address_description (exp, &addr);
op0 = addr_for_mem_ref (&addr, as, true);
@ -8737,6 +8738,16 @@ expand_expr_real_1 (tree exp, rtx target, enum machine_mode tmode,
temp = gen_rtx_MEM (mode, op0);
set_mem_attributes (temp, TMR_ORIGINAL (exp), 0);
set_mem_addr_space (temp, as);
base = get_base_address (TMR_ORIGINAL (exp));
if (INDIRECT_REF_P (base)
&& TMR_BASE (exp)
&& TREE_CODE (TMR_BASE (exp)) == SSA_NAME
&& POINTER_TYPE_P (TREE_TYPE (TMR_BASE (exp))))
{
set_mem_expr (temp, build1 (INDIRECT_REF,
TREE_TYPE (exp), TMR_BASE (exp)));
set_mem_offset (temp, NULL_RTX);
}
}
return temp;