codeb: minimale 'IF expr THEN statseq END' implementierung

[uebersetzerbau-ss10.git] / codeb / code.bfe

diff --git a/codeb/code.bfe b/codeb/code.bfe
index 61fc793000db40eba620edcae396c3c3768f1a1e..3847d7a1e1c838ee069dfb3c00da24fd0b66d3fe 100644 (file)
--- a/codeb/code.bfe
+++ b/codeb/code.bfe
@@ -175,12 +175,13 @@ void gen_subspecial(struct treenode *bnode, short e)
 %}
 
 %start begin
-%term O_RET=1 O_NULL=2 O_SUB=3 O_MUL=4 O_OR=5 O_LESS=6 O_EQ=7 O_ID=8 O_ADD=9 O_NUM=10 O_FIELD=11 O_MTWO=12 O_MFOUR=13 O_MEIGHT=14 O_MONE=15 O_ASSIGN=16
+%term O_RET=1 O_NULL=2 O_SUB=3 O_MUL=4 O_OR=5 O_LESS=6 O_EQ=7 O_ID=8 O_ADD=9 O_NUM=10 O_FIELD=11 O_MTWO=12 O_MFOUR=13 O_MEIGHT=14 O_MONE=15 O_ASSIGN=16 O_IF=17
 
 %%
 
 begin: ret # 0 # printf("\n");
 begin: assign # 0 #
+begin: ifstat # 0 #
 
 assign: O_ASSIGN(O_ID, expr) # 1 # KIDREG2PARM(0); printf("\tmovq %%%s, %%%s\n", BN_REG, KID_REG(0));
 assign: O_ASSIGN(O_ID, O_ID) # 1 # KIDREG2PARM(0); KIDREG2PARM(1); printf("\tmovq %%%s, %%%s\n", KID_REG(1), KID_REG(0));
@@ -191,6 +192,8 @@ ret: O_RET(retexpr) # 2 # printf("\t//o_ret(expr)\n"); move(BN_REG, "rax"); func
 retexpr: O_ID # 1 # printf("\t//retexpr\n"); if(bnode->param_index > -1) move(param_reg(bnode->param_index), BN_REG);
 retexpr: expr
 
+ifstat: O_IF(expr) # 0 #
+
 expr: O_ID # 0 #
 expr: imm # 1 # moveimm(BN_VAL, BN_REG);