From 7ab83427af0f77b59941ceba41d509d7d097b065 Mon Sep 17 00:00:00 2001
From: Dimitry Andric <dim@FreeBSD.org>
Date: Sat, 10 Jun 2017 13:44:06 +0000
Subject: Vendor import of llvm trunk r305145:
 https://llvm.org/svn/llvm-project/llvm/trunk@305145

---
 lib/CodeGen/VirtRegMap.cpp | 11 +++++++++++
 1 file changed, 11 insertions(+)

(limited to 'lib/CodeGen/VirtRegMap.cpp')

diff --git a/lib/CodeGen/VirtRegMap.cpp b/lib/CodeGen/VirtRegMap.cpp
index d10ca1a7ff91..124c2790f68c 100644
--- a/lib/CodeGen/VirtRegMap.cpp
+++ b/lib/CodeGen/VirtRegMap.cpp
@@ -72,6 +72,17 @@ void VirtRegMap::grow() {
   Virt2SplitMap.resize(NumRegs);
 }
 
+void VirtRegMap::assignVirt2Phys(unsigned virtReg, MCPhysReg physReg) {
+  assert(TargetRegisterInfo::isVirtualRegister(virtReg) &&
+         TargetRegisterInfo::isPhysicalRegister(physReg));
+  assert(Virt2PhysMap[virtReg] == NO_PHYS_REG &&
+         "attempt to assign physical register to already mapped "
+         "virtual register");
+  assert(!getRegInfo().isReserved(physReg) &&
+         "Attempt to map virtReg to a reserved physReg");
+  Virt2PhysMap[virtReg] = physReg;
+}
+
 unsigned VirtRegMap::createSpillSlot(const TargetRegisterClass *RC) {
   unsigned Size = TRI->getSpillSize(*RC);
   unsigned Align = TRI->getSpillAlignment(*RC);
-- 
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