1 files changed, 45 insertions, 0 deletions
diff --git a/llvm/lib/Target/WebAssembly/WebAssemblyDebugValueManager.cpp b/llvm/lib/Target/WebAssembly/WebAssemblyDebugValueManager.cpp
new file mode 100644
index 0000000000000..579377c9a5d75
--- /dev/null
+++ b/llvm/lib/Target/WebAssembly/WebAssemblyDebugValueManager.cpp
@@ -0,0 +1,45 @@
+//===-- WebAssemblyDebugValueManager.cpp - WebAssembly DebugValue Manager -===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+///
+/// \file
+/// This file implements the manager for MachineInstr DebugValues.
+///
+//===----------------------------------------------------------------------===//
+
+#include "WebAssemblyDebugValueManager.h"
+#include "WebAssemblyMachineFunctionInfo.h"
+#include "llvm/CodeGen/MachineInstr.h"
+
+using namespace llvm;
+
+WebAssemblyDebugValueManager::WebAssemblyDebugValueManager(
+    MachineInstr *Instr) {
+  Instr->collectDebugValues(DbgValues);
+}
+
+void WebAssemblyDebugValueManager::move(MachineInstr *Insert) {
+  MachineBasicBlock *MBB = Insert->getParent();
+  for (MachineInstr *DBI : reverse(DbgValues))
+    MBB->splice(Insert, DBI->getParent(), DBI);
+}
+
+void WebAssemblyDebugValueManager::updateReg(unsigned Reg) {
+  for (auto *DBI : DbgValues)
+    DBI->getOperand(0).setReg(Reg);
+}
+
+void WebAssemblyDebugValueManager::clone(MachineInstr *Insert,
+                                         unsigned NewReg) {
+  MachineBasicBlock *MBB = Insert->getParent();
+  MachineFunction *MF = MBB->getParent();
+  for (MachineInstr *DBI : reverse(DbgValues)) {
+    MachineInstr *Clone = MF->CloneMachineInstr(DBI);
+    Clone->getOperand(0).setReg(NewReg);
+    MBB->insert(Insert, Clone);
+  }
+}