From: David Given <dg@cowlark.com>
Date: Thu, 15 Dec 2016 23:33:50 +0000 (+0100)
Subject: Actually, let's not split phis on entry just yet; because we split vregs one at
X-Git-Url: https://git.ndcode.org/public/gitweb.cgi?a=commitdiff_plain;h=597ca0ad67d6ee3e3386421189793fbda4704e12;p=ack.git

Actually, let's not split phis on entry just yet; because we split vregs one at
a time, splitting several in a row just causes half of them to interfere with
the other half, which doesn't really help.
---

diff --git a/mach/proto/mcg/pass_splitliveranges.c b/mach/proto/mcg/pass_splitliveranges.c
index b64ad5517..a37ca6daa 100644
--- a/mach/proto/mcg/pass_splitliveranges.c
+++ b/mach/proto/mcg/pass_splitliveranges.c
@@ -94,12 +94,6 @@ void pass_split_live_ranges(void)
     {
         current_bb = dominance.preorder.item[i];
 
-        for (j=0; j<current_bb->phis.count; j++)
-        {
-            struct vreg* vreg = current_bb->phis.item[j].left;
-            insert_move_after(0, vreg);
-        }
-
         for (j=0; j<current_bb->hops.count; j++)
         {
             struct hop* hop = current_bb->hops.item[j];