diff --git a/assembler/src/gram.y b/assembler/src/gram.y
index 47a8a473..31b2a3ac 100644
--- a/assembler/src/gram.y
+++ b/assembler/src/gram.y
@@ -296,6 +296,20 @@ specialinstruction: NOP
 		  bzero(&$$, sizeof($$));
 		  $$.header.opcode = $1;
 		}
+		| DO
+		{
+		  bzero(&$$, sizeof($$));
+		  $$.header.opcode = $1;
+		}
+		| ENDIF
+		{
+		  bzero(&$$, sizeof($$));
+		  $$.header.opcode = $1;
+		  $$.bits1.da1.src1_reg_file = BRW_IMMEDIATE_VALUE;
+		  $$.bits1.da1.src1_reg_type = BRW_REGISTER_TYPE_UD;
+		  $$.bits3.if_else.pop_count = 1;
+		}
+
 ;
 
 /* XXX! */