From 216532ac0a7b333e814cc86b7c91358db6a7e819 Mon Sep 17 00:00:00 2001
From: Chad Rosier <mcrosier@apple.com>
Date: Mon, 26 Nov 2012 23:14:37 +0000
Subject: [PATCH] Now that the X86 Maximal Stack Alignment Check pass has been
 removed (i.e., r168627), we no longer need to call the freezeReservedRegs()
 function a second time.  Previously, this pass was conservatively adding the
 FP to the set of reserved registers, requiring the second update to the
 reserved registers. rdar://12719844

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168630 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/CodeGen/RegAllocBase.cpp | 1 -
 1 file changed, 1 deletion(-)

diff --git a/lib/CodeGen/RegAllocBase.cpp b/lib/CodeGen/RegAllocBase.cpp
index 993dbc71ded..2b598e3a565 100644
--- a/lib/CodeGen/RegAllocBase.cpp
+++ b/lib/CodeGen/RegAllocBase.cpp
@@ -58,7 +58,6 @@ void RegAllocBase::init(VirtRegMap &vrm,
   VRM = &vrm;
   LIS = &lis;
   Matrix = &mat;
-  MRI->freezeReservedRegs(vrm.getMachineFunction());
   RegClassInfo.runOnMachineFunction(vrm.getMachineFunction());
 }