remove unused fields if_then_rules and if_else_rules from struct if_node_contents

backendC/CleanCompilerSources/backend.c

@@ -1709,10 +1709,8 @@ BEGuardNode (BENodeP cond, BENodeDefP thenNodeDefs, BEStrictNodeIdP thenStricts,
 	thenElseInfo = ConvertAllocType (struct if_node_contents);
 
 	thenElseInfo->if_then_node_defs			= thenNodeDefs;
-	thenElseInfo->if_then_rules				= NIL;
 	thenElseInfo->if_then_strict_node_ids	= thenStricts;
 	thenElseInfo->if_else_node_defs			= elseNodeDefs;
-	thenElseInfo->if_else_rules				= NIL;
 	thenElseInfo->if_else_strict_node_ids	= elseStricts;
 
 	node	= ConvertAllocType (NodeS);

backendC/CleanCompilerSources/buildtree.c

@@ -249,10 +249,8 @@ NewIfNode (void)
 	node->node_contents.contents_if=then_else_info;
 
 	then_else_info->if_then_node_defs		= NIL;
-	then_else_info->if_then_rules			= NIL;
 	then_else_info->if_then_strict_node_ids	= NIL;
 	then_else_info->if_else_node_defs		= NIL;
-	then_else_info->if_else_rules			= NIL;
 	then_else_info->if_else_strict_node_ids = NIL;
 
 	node->node_line=-1;

backendC/CleanCompilerSources/optimisations.c

@@ -410,9 +410,6 @@ static Node copy_root_node (Node old)
 		old_then_else_info = old->node_contents.contents_if;
 		new->node_contents.contents_if = new_then_else_info;
 
-		new_then_else_info->if_then_rules = NULL;
-		new_then_else_info->if_else_rules = NULL;
-
 		old_arg=old->node_arguments;
 
 		new_arg = CompAllocType (ArgS);
@@ -737,9 +734,6 @@ static Node copy_node (Node old,Bool lhs)
 		old_then_else_info = old->node_contents.contents_if;
 		new->node_contents.contents_if = new_then_else_info;
 
-		new_then_else_info->if_then_rules = NULL;
-		new_then_else_info->if_else_rules = NULL;
-
 		old_arg=old->node_arguments;
 
 		new_arg = CompAllocType (ArgS);

backendC/CleanCompilerSources/syntaxtr.t

@@ -306,13 +306,11 @@ STRUCT (strict_node_id,StrictNodeId){
 
 STRUCT (if_node_contents,IfNodeContents){
 	NodeDefs		if_then_node_defs;
-	ImpRules		if_then_rules;
 	union {
 		StrictNodeIdP					u_strict_node_ids;
 		struct node_id_ref_count_list *	u_node_id_ref_counts;
 	} if_then_u;
 	NodeDefs		if_else_node_defs;
-	ImpRules		if_else_rules;
 	union {
 		StrictNodeIdP					u_strict_node_ids;
 		struct node_id_ref_count_list *	u_node_id_ref_counts;
@@ -409,10 +407,8 @@ STRUCT (node,Node){
 #endif
 
 #define node_then_node_defs			node_contents.contents_if->if_then_node_defs
-#define node_then_rules				node_contents.contents_if->if_then_rules
 #define node_then_strict_node_ids	node_contents.contents_if->if_then_strict_node_ids
 #define node_else_node_defs			node_contents.contents_if->if_else_node_defs
-#define node_else_rules				node_contents.contents_if->if_else_rules
 #define node_else_strict_node_ids	node_contents.contents_if->if_else_strict_node_ids
 #define node_if_scope				node_contents.contents_if->if_local_scope