Initial Mips support, here we go! =)

- Modifications from the last patch included
  (issues pointed by Evan Cheng are now fixed).
- Added more MipsI instructions.
- Added more patterns to match branch instructions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37461 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 43 insertions, 0 deletions

diff --git a/lib/Target/Mips/MipsSubtarget.h b/lib/Target/Mips/MipsSubtarget.h
new file mode 100644
index 0000000000..7ec61ca95b
--- /dev/null
+++ b/lib/Target/Mips/MipsSubtarget.h
@@ -0,0 +1,43 @@
+//=====-- MipsSubtarget.h - Define Subtarget for the Mips -----*- C++ -*--====//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file was developed by Bruno Cardoso Lopes and is distributed under the 
+// University of Illinois Open Source License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file declares the Mips specific subclass of TargetSubtarget.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef MIPSSUBTARGET_H
+#define MIPSSUBTARGET_H
+
+#include "llvm/Target/TargetSubtarget.h"
+#include "llvm/Target/TargetMachine.h"
+
+#include <string>
+
+namespace llvm {
+class Module;
+
+class MipsSubtarget : public TargetSubtarget {
+protected:
+  bool isR3000;
+public:
+  /// This constructor initializes the data members to match that
+  /// of the specified module.
+  ///
+  MipsSubtarget(const TargetMachine &TM, const Module &M, 
+                const std::string &FS);
+  
+  /// ParseSubtargetFeatures - Parses features string setting specified 
+  /// subtarget options.  Definition of function is auto generated by tblgen.
+  void ParseSubtargetFeatures(const std::string &FS, const std::string &CPU);
+
+  bool IsR3000() const { return isR3000; }
+};
+} // End llvm namespace
+
+#endif