From d75bf346f34db4486eb2deb95d16b9a1bae05752 Mon Sep 17 00:00:00 2001
From: Bill Currie <bill@taniwha.org>
Date: Wed, 23 Aug 2023 08:38:48 +0900
Subject: [PATCH] [qfcc] Support multivec expressions for dot

They don't normally survive to the block-dot stage, but being able to
see the graphs when debugging.
---
 tools/qfcc/source/dot_expr.c | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/tools/qfcc/source/dot_expr.c b/tools/qfcc/source/dot_expr.c
index 5b8b5b0c2..695c99b2f 100644
--- a/tools/qfcc/source/dot_expr.c
+++ b/tools/qfcc/source/dot_expr.c
@@ -605,6 +605,24 @@ print_extend (dstring_t *dstr, expr_t *e, int level, int id, expr_t *next)
 			   extend.extend, e->line);
 }
 
+static void
+print_multivec (dstring_t *dstr, expr_t *e, int level, int id, expr_t *next)
+{
+	int         indent = level * 2 + 2;
+	ex_multivec_t multivec = e->e.multivec;
+
+	for (auto c = multivec.components; c; c = c->next) {
+		_print_expr (dstr, c, level, id, next);
+		dasprintf (dstr, "%*se_%p -> \"e_%p\";\n", indent, "", e, c);
+	}
+
+	dstring_t  *typestr = dstring_newstr();
+	print_type_str (typestr, e->e.multivec.type);
+	dasprintf (dstr, "%*se_%p [label=\"multivec %s\\n%d\"];\n", indent, "", e,
+			   typestr->str, e->line);
+	dstring_delete (typestr);
+}
+
 static void
 _print_expr (dstring_t *dstr, expr_t *e, int level, int id, expr_t *next)
 {
@@ -637,6 +655,7 @@ _print_expr (dstring_t *dstr, expr_t *e, int level, int id, expr_t *next)
 		[ex_horizontal] = print_horizontal,
 		[ex_swizzle] = print_swizzle,
 		[ex_extend] = print_extend,
+		[ex_multivec] = print_multivec,
 	};
 	int         indent = level * 2 + 2;