From 05f120431dd840009c37f96209dae75ab6cd6327 Mon Sep 17 00:00:00 2001
From: Quentin Carbonneaux <quentin.carbonneaux@yale.edu>
Date: Sun, 25 Oct 2015 21:17:24 -0400
Subject: [PATCH] this test optimization is sometimes incorrect

---
 lisc/emit.c | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/lisc/emit.c b/lisc/emit.c
index 8fbaa05..8e69780 100644
--- a/lisc/emit.c
+++ b/lisc/emit.c
@@ -326,11 +326,6 @@ eins(Ins i, Fn *fn, FILE *f)
 		emitf(fn, f, "idiv%w %R", i.wide, i.arg[0]);
 		break;
 	case OXCmp:
-		if (isreg(i.arg[1]) && req(i.arg[0], CON_Z)) {
-			emitf(fn, f, "test%w %R, %R",
-				i.wide, i.arg[1], i.arg[1]);
-			break;
-		}
 		emitf(fn, f, "cmp%w %R, %R", i.wide, i.arg[0], i.arg[1]);
 		break;
 	case OXTest: