From e3b4c0e17698ea2ef13605b8d256c73b5abc38bb Mon Sep 17 00:00:00 2001
From: Dan Gohman <gohman@apple.com>
Date: Tue, 9 Sep 2008 18:25:28 +0000
Subject: [PATCH] Mark IMPLICIT_DEF as being rematerializable and
 cheap-as-a-move. It's already special-cased and treated as rematerializable
 within LiveIntervals; this allows it to be handled by other passes such as
 TwoAddressInstrctionPass.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55999 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Target/Target.td | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lib/Target/Target.td b/lib/Target/Target.td
index 8cc348d1779..e07529d708e 100644
--- a/lib/Target/Target.td
+++ b/lib/Target/Target.td
@@ -390,6 +390,8 @@ def IMPLICIT_DEF : Instruction {
   let AsmString = "";
   let Namespace = "TargetInstrInfo";
   let neverHasSideEffects = 1;
+  let isReMaterializable = 1;
+  let isAsCheapAsAMove = 1;
 }
 def SUBREG_TO_REG : Instruction {
   let OutOperandList = (ops unknown:$dst);
-- 
2.34.1