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re PR middle-end/44824 (internal compiler error: verify_stmts failed) 

2010-07-14  Richard Guenther  <rguenther@suse.de>

	PR tree-optimization/44824
	* tree-ssa-forwprop.c (forward_propagate_addr_expr_1): Use
	is_gimple_mem_ref_addr.
	(tree_ssa_forward_propagate_single_use_vars): Do not propagate
	non-decl_address_invariant_p addresses.

From-SVN: r162177
This commit is contained in:
Richard Guenther 2010-07-14 12:19:16 +00:00 committed by Richard Biener
parent b1c8622e95
commit bf9899d44b
2 changed files with 14 additions and 5 deletions
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8
gcc/ChangeLog
View File

@ -1,3 +1,11 @@
2010-07-14 Richard Guenther <rguenther@suse.de>
PR tree-optimization/44824
* tree-ssa-forwprop.c (forward_propagate_addr_expr_1): Use
is_gimple_mem_ref_addr.
(tree_ssa_forward_propagate_single_use_vars): Do not propagate
non-decl_address_invariant_p addresses.
2010-07-14 Bernd Schmidt <bernds@codesourcery.com>
* reload.c (find_reloads): Revert code to penalize small register

11
gcc/tree-ssa-forwprop.c
View File

@ -804,9 +804,7 @@ forward_propagate_addr_expr_1 (tree name, tree def_rhs,
fold_convert (ptr_type_node,
gimple_assign_rhs2 (use_stmt)));
if (TREE_CODE (new_def_rhs) == MEM_REF
&& TREE_CODE (TREE_OPERAND (new_def_rhs, 0)) == ADDR_EXPR
&& !DECL_P (TREE_OPERAND (TREE_OPERAND (new_def_rhs, 0), 0))
&& !CONSTANT_CLASS_P (TREE_OPERAND (TREE_OPERAND (new_def_rhs, 0), 0)))
&& !is_gimple_mem_ref_addr (TREE_OPERAND (new_def_rhs, 0)))
return false;
new_def_rhs = build_fold_addr_expr_with_type (new_def_rhs,
TREE_TYPE (rhs));
@ -1398,8 +1396,11 @@ tree_ssa_forward_propagate_single_use_vars (void)
&& TREE_CODE (rhs) == ADDR_EXPR
&& POINTER_TYPE_P (TREE_TYPE (lhs))))
{
STRIP_NOPS (rhs);
if (!stmt_references_abnormal_ssa_name (stmt)
tree base = get_base_address (TREE_OPERAND (rhs, 0));
if ((!base
|| !DECL_P (base)
|| decl_address_invariant_p (base))
&& !stmt_references_abnormal_ssa_name (stmt)
&& forward_propagate_addr_expr (lhs, rhs))
{
release_defs (stmt);