From: Christoph Mallon <christoph.mallon@gmx.de>
Date: Sun, 12 Oct 2008 12:01:05 +0000 (+0000)
Subject: Do not generate IncMem/DecMem, when the target cpu does not like it.
X-Git-Url: http://nsz.repo.hu/git/?a=commitdiff_plain;h=d1da124296582cc3c7cbe9514c1e9c087d190ece;p=libfirm

Do not generate IncMem/DecMem, when the target cpu does not like it.

[r22799]
---

diff --git a/ir/be/ia32/ia32_transform.c b/ir/be/ia32/ia32_transform.c
index 3ad3e9d3a..97fc2643e 100644
--- a/ir/be/ia32/ia32_transform.c
+++ b/ir/be/ia32/ia32_transform.c
@@ -2153,14 +2153,14 @@ static ir_node *try_create_dest_am(ir_node *node)
 	case iro_Add:
 		op1      = get_Add_left(val);
 		op2      = get_Add_right(val);
-		if (is_Const_1(op2)) {
-			new_node = dest_am_unop(val, op1, mem, ptr, mode,
-			                        new_rd_ia32_IncMem);
-			break;
-		} else if (is_Const_Minus_1(op2)) {
-			new_node = dest_am_unop(val, op1, mem, ptr, mode,
-			                        new_rd_ia32_DecMem);
-			break;
+		if (ia32_cg_config.use_incdec) {
+			if (is_Const_1(op2)) {
+				new_node = dest_am_unop(val, op1, mem, ptr, mode, new_rd_ia32_IncMem);
+				break;
+			} else if (is_Const_Minus_1(op2)) {
+				new_node = dest_am_unop(val, op1, mem, ptr, mode, new_rd_ia32_DecMem);
+				break;
+			}
 		}
 		new_node = dest_am_binop(val, op1, op2, mem, ptr, mode,
 		                         new_rd_ia32_AddMem, new_rd_ia32_AddMem8Bit,