add support for the sparcv9-*-* target triple to turn on
64-bit sparc codegen.  Patch by Nathan Keynes!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95293 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/Sparc/SparcSubtarget.h b/lib/Target/Sparc/SparcSubtarget.h
index 4377034..cec0ab4 100644
--- a/lib/Target/Sparc/SparcSubtarget.h
+++ b/lib/Target/Sparc/SparcSubtarget.h
@@ -23,8 +23,10 @@
   bool IsV9;
   bool V8DeprecatedInsts;
   bool IsVIS;
+  bool Is64Bit;
+  
 public:
-  SparcSubtarget(const std::string &TT, const std::string &FS);
+  SparcSubtarget(const std::string &TT, const std::string &FS, bool is64bit);
 
   bool isV9() const { return IsV9; }
   bool isVIS() const { return IsVIS; }
@@ -34,7 +36,17 @@
   /// subtarget options.  Definition of function is auto generated by tblgen.
   std::string ParseSubtargetFeatures(const std::string &FS,
                                      const std::string &CPU);
-
+  
+  bool is64Bit() const { return Is64Bit; }
+  std::string getDataLayout() const {
+    const char *p;
+    if (is64Bit()) {
+      p = "E-p:64:64:64-i64:64:64-f64:64:64-f128:128:128-n32:64";
+    } else {
+      p = "E-p:32:32:32-i64:64:64-f64:64:64-f128:64:64-n32";
+    }
+    return std::string(p);
+  }
 };
 
 } // end namespace llvm