From bd5a7904566a0d8bad2eeeb231eaca2e9e0f9775 Mon Sep 17 00:00:00 2001
From: Bill Currie <bill@taniwha.org>
Date: Fri, 16 Nov 2012 20:12:13 +0900
Subject: [PATCH] Support statement labels in dags.

While the code is broken in places, switch.r generates code again.
---
 tools/qfcc/include/expr.h |  1 +
 tools/qfcc/source/dags.c  | 10 +++++++++-
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/tools/qfcc/include/expr.h b/tools/qfcc/include/expr.h
index 805af9784..ff70d40f4 100644
--- a/tools/qfcc/include/expr.h
+++ b/tools/qfcc/include/expr.h
@@ -75,6 +75,7 @@ typedef struct ex_label_s {
 	struct sblock_s *dest;		///< the location of this label if known
 	const char *name;			///< the name of this label
 	int         used;			///< label is used as a target
+	struct daglabel_s *daglabel;
 } ex_label_t;
 
 typedef struct {
diff --git a/tools/qfcc/source/dags.c b/tools/qfcc/source/dags.c
index 6f99c0171..083be6385 100644
--- a/tools/qfcc/source/dags.c
+++ b/tools/qfcc/source/dags.c
@@ -71,6 +71,8 @@ flush_daglabels (void)
 				op->o.tempop.daglabel = 0;
 			else if (op->op_type == op_value || op->op_type == op_pointer)
 				op->o.value->daglabel = 0;
+			else if (op->op_type == op_label)
+				op->o.label->daglabel = 0;
 			else
 				internal_error (0, "unexpected operand type");
 		}
@@ -154,8 +156,14 @@ operand_label (operand_t *op)
 		label = new_label ();
 		label->op = op;
 		val->daglabel = label;
+	} else if (op->op_type == op_label) {
+		if (op->o.label->daglabel)
+			return op->o.label->daglabel;
+		label = new_label ();
+		label->op = op;
+		op->o.label->daglabel = label;
 	} else {
-		//internal_error (0, "unexpected operand type: %d", op->op_type);
+		internal_error (0, "unexpected operand type: %d", op->op_type);
 	}
 	return label;
 }