X-Git-Url: http://wien.tomnetworks.com/gitweb/?a=blobdiff_plain;f=codea%2Fcode.bfe;h=6184569f7b35716cc94dddc8211854275171cfa0;hb=a22dd19b88fd2fd2b377c005abd1cad02a24ca60;hp=14cde11d6ab5ce0108f0a7807a2d1c5488e69c78;hpb=ea73a166fb0973b8fd44c320769b9844de11e78e;p=uebersetzerbau-ss10.git

diff --git a/codea/code.bfe b/codea/code.bfe
index 14cde11..6184569 100644
--- a/codea/code.bfe
+++ b/codea/code.bfe
@@ -149,6 +149,16 @@ void gen_lea(struct treenode *bnode, short e)
 	}
 }
 
+void gen_subspecial(struct treenode *bnode)
+{
+	/* tritt z.b. bei snafu_05.0 auf */
+	printf("\t//gen_subspecial\n");
+	KIDREG2ID(0);
+	KIDKIDREG2PARM(1,0);
+	printf("\tsubq %%%s, %%%s\n", KIDKID_REG(1,0), BN_REG);
+	printf("\taddq %%%s, %%%s\n", KIDKID_REG(1,1), BN_REG);
+}
+
 %}
 
 %start begin
@@ -171,6 +181,8 @@ expr: O_SUB(expr,imm)    # 2 # gen_e_imm(bnode, "subq");
 expr: O_SUB(imm,expr)  # 2 # gen_imm_eno(bnode, "subq");
 expr: O_SUB(imm,O_FIELD(expr)) # 2 # gen_imm_field(bnode);
 
+expr: O_SUB(expr,O_SUB(O_ID,expr)) # 2 # gen_subspecial(bnode);
+
 expr: O_SUB(expr,O_MUL(O_MONE,expr)) # 1 # gen_lea(bnode,0);
 expr: O_SUB(expr,O_MUL(O_MTWO,expr)) # 1 # gen_lea(bnode,0);
 expr: O_SUB(expr,O_MUL(O_MFOUR,expr)) # 1 # gen_lea(bnode,0);