Implement array-length instruction.

Change-Id: I722af27990fc5d179857e886d00dab11b2cd4ca8
diff --git a/src/compiler_llvm/method_compiler.h b/src/compiler_llvm/method_compiler.h
index edde6ff..a1f1802 100644
--- a/src/compiler_llvm/method_compiler.h
+++ b/src/compiler_llvm/method_compiler.h
@@ -294,10 +294,15 @@
                                              llvm::Value* rhs,
                                              FPArithmKind arithm);
 
+  llvm::Value* EmitLoadArrayLength(llvm::Value* array);
+
   void EmitGuard_DivZeroException(uint32_t dex_pc,
                                   llvm::Value* denominator,
                                   JType op_jty);
 
+  void EmitGuard_NullPointerException(uint32_t dex_pc,
+                                      llvm::Value* object);
+
   RegCategory GetInferredRegCategory(uint32_t dex_pc, uint16_t reg);