[GlobalISel] Add the skeleton of the RegBankSelect pass.

This pass is reponsible for assigning the generic virtual registers to register
banks.

llvm-svn: 265440

1 files changed, 32 insertions, 0 deletions

diff --git a/llvm/lib/CodeGen/GlobalISel/RegBankSelect.cpp b/llvm/lib/CodeGen/GlobalISel/RegBankSelect.cpp
new file mode 100644
index 00000000000..7f1e9d9a653
--- /dev/null
+++ b/llvm/lib/CodeGen/GlobalISel/RegBankSelect.cpp
@@ -0,0 +1,32 @@
+//===- llvm/CodeGen/GlobalISel/RegBankSelect.cpp - RegBankSelect -*- C++ -*-==//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+/// \file
+/// This file implements the RegBankSelect class.
+//===----------------------------------------------------------------------===//
+
+#include "llvm/CodeGen/GlobalISel/RegBankSelect.h"
+
+#define DEBUG_TYPE "regbankselect"
+
+using namespace llvm;
+
+char RegBankSelect::ID = 0;
+INITIALIZE_PASS(RegBankSelect, "regbankselect",
+                "Assign register bank of generic virtual registers",
+                false, false);
+
+RegBankSelect::RegBankSelect() : MachineFunctionPass(ID), RBI(nullptr) {
+  initializeRegBankSelectPass(*PassRegistry::getPassRegistry());
+}
+
+bool RegBankSelect::runOnMachineFunction(MachineFunction &MF) {
+  // Avoid unused field member warning.
+  (void)RBI;
+  return false;
+}