implement the null function for the Mips32 subzero compiler

src/IceTargetLoweringMIPS32.h

Index: src/IceTargetLoweringMIPS32.h
diff --git a/src/IceTargetLoweringMIPS32.h b/src/IceTargetLoweringMIPS32.h
index cb583b553d9df1257be46f7e3f528dad3ca59d3f..821d027bab48e1c23db14cdf0d623509ba26ce69 100644
--- a/src/IceTargetLoweringMIPS32.h
+++ b/src/IceTargetLoweringMIPS32.h
@@ -56,19 +56,23 @@ public:
 
   const char *getConstantPrefix() const final { return ""; }
   void emit(const ConstantUndef *C) const final {
-    llvm::report_fatal_error("Not yet implemented");
+    llvm::report_fatal_error("Not yet implemented: constantundef");
   }
   void emit(const ConstantInteger32 *C) const final {
-    llvm::report_fatal_error("Not yet implemented");
+    llvm::report_fatal_error("Not yet implemented: constantinteger32");
   }
   void emit(const ConstantInteger64 *C) const final {
-    llvm::report_fatal_error("Not yet implemented");
+    llvm::report_fatal_error("Not yet implemented: constantinteger64");
   }
   void emit(const ConstantFloat *C) const final {
-    llvm::report_fatal_error("Not yet implemented");
+    llvm::report_fatal_error("Not yet implemented: constantfloat");
   }
   void emit(const ConstantDouble *C) const final {
-    llvm::report_fatal_error("Not yet implemented");
+    llvm::report_fatal_error("Not yet implemented: constantdouble");
+  }
+
+  void _ret(Variable *LR, Variable *Src0 = nullptr) {

[jvoung (off chromium), 2015/06/12 19:39:13]

LR -> RA

+    Context.insert(InstMIPS32Ret::create(Func, LR, Src0));
   }
 
   void lowerArguments() override;