From ece5619fece003e030bbf55b13f9285b4cc0e260 Mon Sep 17 00:00:00 2001
From: qinsoon <qinsoon@gmail.com>
Date: Fri, 3 Nov 2017 13:25:36 +1100
Subject: [PATCH] set COPY_WEIGHT to 0

---
 src/compiler/backend/reg_alloc/graph_coloring/liveness.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/compiler/backend/reg_alloc/graph_coloring/liveness.rs b/src/compiler/backend/reg_alloc/graph_coloring/liveness.rs
index 1c3a561e..8ef294e6 100644
--- a/src/compiler/backend/reg_alloc/graph_coloring/liveness.rs
+++ b/src/compiler/backend/reg_alloc/graph_coloring/liveness.rs
@@ -165,7 +165,7 @@ impl InterferenceGraph {
     fn spillcost_heuristic(ty: NodeType, loop_depth: usize) -> f32 {
         const DEF_WEIGHT: f32 = 1f32;
         const USE_WEIGHT: f32 = 1f32;
-        const COPY_WEIGHT: f32 = 2f32;
+        const COPY_WEIGHT: f32 = 0f32;
 
         let loop_depth = loop_depth as i32;
 
-- 
2.21.0