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[PATCH] Preserve even more alais info with IVOPTs
- From: Richard Guenther <rguenther at suse dot de>
- To: gcc-patches at gcc dot gnu dot org
- Date: Mon, 5 Jul 2010 18:05:14 +0200 (CEST)
- Subject: [PATCH] Preserve even more alais info with IVOPTs
Bootstrapped and tested on x86_64-unknown-linux-gnu, committed.
Richard.
2010-07-05 Richard Guenther <rguenther@suse.de>
* tree-ssa-loop-ivopts.c (rewrite_use_nonlinear_expr): Copy
alias info.
Index: gcc/tree-ssa-loop-ivopts.c
===================================================================
--- gcc/tree-ssa-loop-ivopts.c (revision 161840)
+++ gcc/tree-ssa-loop-ivopts.c (working copy)
@@ -5486,8 +5486,12 @@ rewrite_use_nonlinear_expr (struct ivopt
to still. */
&& (get_gimple_rhs_num_ops (TREE_CODE (comp))
>= gimple_num_ops (gsi_stmt (bsi)))))
- comp = force_gimple_operand_gsi (&bsi, comp, false, SSA_NAME_VAR (tgt),
- true, GSI_SAME_STMT);
+ {
+ comp = force_gimple_operand_gsi (&bsi, comp, true, NULL_TREE,
+ true, GSI_SAME_STMT);
+ if (POINTER_TYPE_P (TREE_TYPE (tgt)))
+ duplicate_ssa_name_ptr_info (comp, SSA_NAME_PTR_INFO (tgt));
+ }
if (gimple_code (use->stmt) == GIMPLE_PHI)
{