From b9973f87c6e23062a8a921e8617d4625c355338d Mon Sep 17 00:00:00 2001
From: Djordje Todorovic <djordje.todorovic@rt-rk.com>
Date: Wed, 31 Jul 2019 16:51:28 +0000
Subject: Reland "[DwarfDebug] Dump call site debug info"

The build failure found after the rL365467 has been
resolved.

Differential Revision: https://reviews.llvm.org/D60716

llvm-svn: 367446
---
 llvm/lib/CodeGen/TargetRegisterInfo.cpp | 13 +++++++++++++
 1 file changed, 13 insertions(+)

(limited to 'llvm/lib/CodeGen/TargetRegisterInfo.cpp')

diff --git a/llvm/lib/CodeGen/TargetRegisterInfo.cpp b/llvm/lib/CodeGen/TargetRegisterInfo.cpp
index f1b2ecf3243..f081b02df56 100644
--- a/llvm/lib/CodeGen/TargetRegisterInfo.cpp
+++ b/llvm/lib/CodeGen/TargetRegisterInfo.cpp
@@ -433,6 +433,19 @@ TargetRegisterInfo::getRegAllocationHints(unsigned VirtReg,
   return false;
 }
 
+bool TargetRegisterInfo::isCalleeSavedPhysReg(
+    unsigned PhysReg, const MachineFunction &MF) const {
+  if (PhysReg == 0)
+    return false;
+  const uint32_t *callerPreservedRegs =
+      getCallPreservedMask(MF, MF.getFunction().getCallingConv());
+  if (callerPreservedRegs) {
+    assert(isPhysicalRegister(PhysReg) && "Expected physical register");
+    return (callerPreservedRegs[PhysReg / 32] >> PhysReg % 32) & 1;
+  }
+  return false;
+}
+
 bool TargetRegisterInfo::canRealignStack(const MachineFunction &MF) const {
   return !MF.getFunction().hasFnAttribute("no-realign-stack");
 }
-- 
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