PTX: MC-ize the PTX back-end (patch 1 of N)

Lay some groundwork for converting to MC-based asm printer. This is the first
of probably many patches to bring the back-end back up-to-date with all of the
recent MC changes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140697 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 33 insertions, 0 deletions

diff --git a/lib/Target/PTX/PTXMCInstLower.cpp b/lib/Target/PTX/PTXMCInstLower.cpp
new file mode 100644
index 0000000000..cc820803c9
--- /dev/null
+++ b/lib/Target/PTX/PTXMCInstLower.cpp
@@ -0,0 +1,33 @@
+//===-- PTXMCInstLower.cpp - Convert PTX MachineInstr to an MCInst --------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file contains code to lower PTX MachineInstrs to their corresponding
+// MCInst records.
+//
+//===----------------------------------------------------------------------===//
+
+#include "PTX.h"
+#include "PTXAsmPrinter.h"
+#include "llvm/Constants.h"
+#include "llvm/CodeGen/MachineBasicBlock.h"
+#include "llvm/MC/MCExpr.h"
+#include "llvm/MC/MCInst.h"
+#include "llvm/Target/Mangler.h"
+
+void llvm::LowerPTXMachineInstrToMCInst(const MachineInstr *MI, MCInst &OutMI,
+                                        PTXAsmPrinter &AP) {
+  OutMI.setOpcode(MI->getOpcode());
+  for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) {
+    const MachineOperand &MO = MI->getOperand(i);
+    MCOperand MCOp;
+    if (AP.lowerOperand(MO, MCOp))
+      OutMI.addOperand(MCOp);
+  }
+}
+