From cfca06d7963fa0909f90483b42a6d7d194d01e08 Mon Sep 17 00:00:00 2001
From: Dimitry Andric <dim@FreeBSD.org>
Date: Sun, 26 Jul 2020 19:36:28 +0000
Subject: Vendor import of llvm-project master 2e10b7a39b9, the last commit
 before the llvmorg-12-init tag, from which release/11.x was branched.

---
 llvm/lib/Analysis/MemoryLocation.cpp | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

(limited to 'llvm/lib/Analysis/MemoryLocation.cpp')

diff --git a/llvm/lib/Analysis/MemoryLocation.cpp b/llvm/lib/Analysis/MemoryLocation.cpp
index 103cdea148e5..4c31d6786ed8 100644
--- a/llvm/lib/Analysis/MemoryLocation.cpp
+++ b/llvm/lib/Analysis/MemoryLocation.cpp
@@ -83,6 +83,23 @@ MemoryLocation MemoryLocation::get(const AtomicRMWInst *RMWI) {
                         AATags);
 }
 
+Optional<MemoryLocation> MemoryLocation::getOrNone(const Instruction *Inst) {
+  switch (Inst->getOpcode()) {
+  case Instruction::Load:
+    return get(cast<LoadInst>(Inst));
+  case Instruction::Store:
+    return get(cast<StoreInst>(Inst));
+  case Instruction::VAArg:
+    return get(cast<VAArgInst>(Inst));
+  case Instruction::AtomicCmpXchg:
+    return get(cast<AtomicCmpXchgInst>(Inst));
+  case Instruction::AtomicRMW:
+    return get(cast<AtomicRMWInst>(Inst));
+  default:
+    return None;
+  }
+}
+
 MemoryLocation MemoryLocation::getForSource(const MemTransferInst *MTI) {
   return getForSource(cast<AnyMemTransferInst>(MTI));
 }
-- 
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