From: Götz Lindenmaier <goetz@ipd.info.uni-karlsruhe.de>
Date: Sun, 22 May 2005 15:17:35 +0000 (+0000)
Subject: bugfix and additional case for optimization.
X-Git-Url: http://nsz.repo.hu/git/?a=commitdiff_plain;h=adf42c90252cbcea388dd45d5f840a5459d9446d;p=libfirm

bugfix and additional case for optimization.
May we skip casts when checking for exception after alloc?  I think so.

[r5868]
---

diff --git a/ir/opt/ldstopt.c b/ir/opt/ldstopt.c
index 663ff5fd3..5bf3c9442 100644
--- a/ir/opt/ldstopt.c
+++ b/ir/opt/ldstopt.c
@@ -381,7 +381,8 @@ static int optimize_load(ir_node *load)
         }
       }
     }
-    else if (get_irn_op(ptr) == op_Alloc) {
+    else if ((get_irn_op(skip_Proj(ptr)) == op_Alloc) ||
+	     ((get_irn_op(ptr) == op_Cast) && (get_irn_op(skip_Proj(get_Cast_op(ptr))) == op_Alloc))) {
       /* simple case: a direct load after an Alloc. Firm Alloc throw
        * an exception in case of out-of-memory. So, there is no way for an
        * exception in this load.