From 3bb4f8a647e8d8c631fe128a0fca2d2bcacff7c7 Mon Sep 17 00:00:00 2001
From: Quentin Carbonneaux <quentin.carbonneaux@yale.edu>
Date: Tue, 12 Apr 2016 14:13:55 -0400
Subject: [PATCH] nicer agony message in isel

---
 isel.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/isel.c b/isel.c
index faf6fa8..2d4f5c5 100644
--- a/isel.c
+++ b/isel.c
@@ -333,7 +333,7 @@ Emit:
 			selcmp(i.arg, kc, fn);
 			break;
 		}
-		die("unknown instruction");
+		die("unknown instruction %s", opdesc[i.op].name);
 	}
 
 	while (i0 > curi && --i0) {