Adding the MicroBlaze backend.

The MicroBlaze is a highly configurable 32-bit soft-microprocessor for
use on Xilinx FPGAs. For more information see:
http://www.xilinx.com/tools/microblaze.htm
http://en.wikipedia.org/wiki/MicroBlaze

The current LLVM MicroBlaze backend generates assembly which can be
compiled using the an appropriate binutils assembler.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96969 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 79 insertions, 0 deletions

diff --git a/lib/Target/MBlaze/MBlazeSubtarget.h b/lib/Target/MBlaze/MBlazeSubtarget.h
new file mode 100644
index 0000000000..bebb3f773e
--- /dev/null
+++ b/lib/Target/MBlaze/MBlazeSubtarget.h
@@ -0,0 +1,79 @@
+//=====-- MBlazeSubtarget.h - Define Subtarget for the MBlaze -*- C++ -*--====//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file declares the MBlaze specific subclass of TargetSubtarget.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef MBLAZESUBTARGET_H
+#define MBLAZESUBTARGET_H
+
+#include "llvm/Target/TargetSubtarget.h"
+#include "llvm/Target/TargetMachine.h"
+
+#include <string>
+
+namespace llvm {
+
+class MBlazeSubtarget : public TargetSubtarget {
+
+protected:
+
+  enum MBlazeArchEnum {
+    V400, V500, V600, V700, V710
+  };
+
+  // MBlaze architecture version
+  MBlazeArchEnum MBlazeArchVersion;
+
+  bool HasPipe3;
+  bool HasBarrel;
+  bool HasDiv;
+  bool HasMul;
+  bool HasFSL;
+  bool HasEFSL;
+  bool HasMSRSet;
+  bool HasException;
+  bool HasPatCmp;
+  bool HasFPU;
+  bool HasESR;
+  bool HasPVR;
+  bool HasMul64;
+  bool HasSqrt;
+  bool HasMMU;
+
+  InstrItineraryData InstrItins;
+
+public:
+
+  /// This constructor initializes the data members to match that
+  /// of the specified triple.
+  MBlazeSubtarget(const std::string &TT, const std::string &FS);
+
+  /// ParseSubtargetFeatures - Parses features string setting specified
+  /// subtarget options.  Definition of function is auto generated by tblgen.
+  std::string ParseSubtargetFeatures(const std::string &FS,
+                                     const std::string &CPU);
+
+  bool hasFPU()    const { return HasFPU; }
+  bool hasSqrt()   const { return HasSqrt; }
+  bool hasMul()    const { return HasMul; }
+  bool hasMul64()  const { return HasMul64; }
+  bool hasDiv()    const { return HasDiv; }
+  bool hasBarrel() const { return HasBarrel; }
+
+  bool isV400() const { return MBlazeArchVersion == V400; }
+  bool isV500() const { return MBlazeArchVersion == V500; }
+  bool isV600() const { return MBlazeArchVersion == V600; }
+  bool isV700() const { return MBlazeArchVersion == V700; }
+  bool isV710() const { return MBlazeArchVersion == V710; }
+};
+} // End llvm namespace
+
+#endif