Enables more VM tests for SIMMIPS.

runtime/vm/assembler_mips.h

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef VM_ASSEMBLER_MIPS_H_
 #define VM_ASSEMBLER_MIPS_H_
 
 #ifndef VM_ASSEMBLER_H_
 #error Do not include assembler_mips.h directly; use assembler.h instead.
 #endif
@@ skipping 140 matching lines @@
         in_delay_slot_(false),
         comments_() { }
   ~Assembler() { }
 
   void PopRegister(Register r) { Pop(r); }
 
   void Bind(Label* label);
 
   // Misc. functionality
   int CodeSize() const { return buffer_.Size(); }
-  int prologue_offset() const { return -1; }
+  int prologue_offset() const { return prologue_offset_; }
   const ZoneGrowableArray<int>& GetPointerOffsets() const {
     return buffer_.pointer_offsets();
   }
   const GrowableObjectArray& object_pool() const { return object_pool_; }
   void FinalizeInstructions(const MemoryRegion& region) {
     buffer_.FinalizeInstructions(region);
   }
 
   // Set up a stub frame so that the stack traversal code can easily identify
   // a stub frame.
@@ skipping 26 matching lines @@
   void Unimplemented(const char* message);
   void Untested(const char* message);
   void Unreachable(const char* message);
 
   static void InitializeMemoryWithBreakpoints(uword data, int length);
 
   void Comment(const char* format, ...) PRINTF_ATTRIBUTE(2, 3);
 
   const Code::Comments& GetCodeComments() const;
 
-  static const char* RegisterName(Register reg) {
-    UNIMPLEMENTED();
-    return NULL;
-  }
+  static const char* RegisterName(Register reg);
 
-  static const char* FpuRegisterName(FpuRegister reg) {
-    UNIMPLEMENTED();
-    return NULL;
+  static const char* FpuRegisterName(FpuRegister reg);
+
+  void SetPrologueOffset() {
+    if (prologue_offset_ == -1) {
+      prologue_offset_ = CodeSize();
+    }
   }
 
   // A utility to be able to assemble an instruction into the delay slot.
   Assembler* delay_slot() {
     ASSERT(delay_slot_available_);
     ASSERT(buffer_.Load<int32_t>(buffer_.GetPosition() - sizeof(int32_t)) ==
         Instr::kNopInstruction);
     buffer_.Remit<int32_t>();
     delay_slot_available_ = false;
     in_delay_slot_ = true;
@@ skipping 583 matching lines @@
     const int32_t ival = bit_cast<int32_t, float>(value);
     if (ival == 0) {
       mtc1(ZR, rd);
     } else {
       LoadImmediate(TMP1, ival);
       mtc1(TMP1, rd);
     }
   }
 
   void AddImmediate(Register rd, Register rs, int32_t value) {
-    if (value == 0) return;
+    if ((value == 0) && (rd == rs)) return;
+    // If value is 0, we still want to move rs to rd if they aren't the same.
     if (Utils::IsInt(kImmBits, value)) {
       addiu(rd, rs, Immediate(value));
     } else {
       LoadImmediate(TMP1, value);
       addu(rd, rs, TMP1);
     }
   }
 
   void AddImmediate(Register rd, int32_t value) {
     AddImmediate(rd, rd, value);
@@ skipping 355 matching lines @@
                                   Register value,
                                   Label* no_update);
 
   DISALLOW_ALLOCATION();
   DISALLOW_COPY_AND_ASSIGN(Assembler);
 };
 
 }  // namespace dart
 
 #endif  // VM_ASSEMBLER_MIPS_H_