[mips][mips64r6] Add experimental support for MIPS32r6 and MIPS64r6

Summary:
Adds MIPS32r6/MIPS64r6 and checks the compatibility requirements for these
processors.

I've also included comments to describe removed and re-encoded instructions,
along with placeholder def's for the new instructions but there are no
functional changes to codegen at this point.

Reviewers: jkolek, vmedic

Reviewed By: vmedic

Differential Revision: http://reviews.llvm.org/D3622

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@208399 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 7 insertions, 2 deletions

diff --git a/lib/Target/Mips/MipsSubtarget.h b/lib/Target/Mips/MipsSubtarget.h
index 7aa2904969..0976ffb3f7 100644
--- a/lib/Target/Mips/MipsSubtarget.h
+++ b/lib/Target/Mips/MipsSubtarget.h
@@ -37,8 +37,10 @@ public:
   };
 
 protected:
-  enum MipsArchEnum { Mips1, Mips2, Mips32, Mips32r2, Mips3, Mips4, Mips5,
-                      Mips64, Mips64r2 };
+  enum MipsArchEnum {
+    Mips1, Mips2, Mips32, Mips32r2, Mips32r6, Mips3, Mips4, Mips5, Mips64,
+    Mips64r2, Mips64r6
+  };
 
   // Mips architecture version
   MipsArchEnum MipsArchVersion;
@@ -156,8 +158,11 @@ public:
   bool hasMips32() const { return MipsArchVersion >= Mips32; }
   bool hasMips32r2() const { return MipsArchVersion == Mips32r2 ||
                                    MipsArchVersion == Mips64r2; }
+  bool hasMips32r6() const { return MipsArchVersion == Mips32r6 ||
+                                   MipsArchVersion == Mips64r6; }
   bool hasMips64() const { return MipsArchVersion >= Mips64; }
   bool hasMips64r2() const { return MipsArchVersion == Mips64r2; }
+  bool hasMips64r6() const { return MipsArchVersion == Mips64r6; }
 
   bool hasCnMips() const { return HasCnMips; }