From b26cf11a7b89c8c77d306a2ebeede00ed81486eb Mon Sep 17 00:00:00 2001
From: Quentin Colombet <qcolombet@apple.com>
Date: Fri, 10 Apr 2015 23:14:34 +0000
Subject: [PATCH] [AArch64] Strengthen the code for the prologue insertion. The
 spilled registers are pristine and thus, correctly handled by the register
 scavenger and so on, but the liveness information is strictly speaking wrong
 at this point. Fix that.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234664 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Target/AArch64/AArch64FrameLowering.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lib/Target/AArch64/AArch64FrameLowering.cpp b/lib/Target/AArch64/AArch64FrameLowering.cpp
index 01716c3cca5..bd2af161210 100644
--- a/lib/Target/AArch64/AArch64FrameLowering.cpp
+++ b/lib/Target/AArch64/AArch64FrameLowering.cpp
@@ -787,6 +787,8 @@ bool AArch64FrameLowering::spillCalleeSavedRegisters(
     if (StrOpc == AArch64::STPDpre || StrOpc == AArch64::STPXpre)
       MIB.addReg(AArch64::SP, RegState::Define);
 
+    MBB.addLiveIn(Reg1);
+    MBB.addLiveIn(Reg2);
     MIB.addReg(Reg2, getPrologueDeath(MF, Reg2))
         .addReg(Reg1, getPrologueDeath(MF, Reg1))
         .addReg(AArch64::SP)
-- 
2.40.0