codea: super mega opt auch fuer konstante

diff --git a/codea/code.bfe b/codea/code.bfe
index f51ccc2d76c0f79ca2a0f969eee524066ac99a4b..84d8db4c3f0feaf58c925e29fdbb1818876aab61 100644 (file)
--- a/codea/code.bfe
+++ b/codea/code.bfe
@@ -149,13 +149,17 @@ void gen_lea(struct treenode *bnode, short e)
        }
 }
 
-void gen_subspecial(struct treenode *bnode)
+void gen_subspecial(struct treenode *bnode, short e)
 {
        /* tritt z.b. bei snafu_05.0 auf */
-       printf("\t//gen_subspecial\n");
-       KIDREG2ID(0);
+       printf("\t//gen_subspecial(%i)\n", e);
+       if (!e)
+               KIDREG2ID(0);
        KIDKIDREG2PARM(1,0);
-       printf("\tsubq %%%s, %%%s\n", KIDKID_REG(1,0), BN_REG);
+       if(e)
+               printf("\tsubq $%d, %%%s\n", KIDKID_VAL(1,0), BN_REG);
+       else
+               printf("\tsubq %%%s, %%%s\n", KIDKID_REG(1,0), BN_REG);
        printf("\taddq %%%s, %%%s\n", KIDKID_REG(1,1), BN_REG);
 }
 
@@ -181,7 +185,8 @@ 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_SUB(O_ID,expr)) # 2 # gen_subspecial(bnode, 0);
+expr: O_SUB(expr,O_SUB(imm,expr)) # 2 # gen_subspecial(bnode, 1);
 
 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);