In class Function replace current code field with current instruction field, that way we save one l…

runtime/vm/stub_code_mips.cc

 // 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.
 
 #include "vm/globals.h"
 #if defined(TARGET_ARCH_MIPS)
 
 #include "vm/assembler.h"
 #include "vm/code_generator.h"
 #include "vm/compiler.h"
@@ skipping 652 matching lines @@
 
   __ CallRuntime(kMegamorphicCacheMissHandlerRuntimeEntry, 3);
 
   __ lw(T0, Address(SP, 3 * kWordSize));  // Get result function.
   __ lw(S4, Address(SP, 4 * kWordSize));  // Restore argument descriptor.
   __ lw(S5, Address(SP, 5 * kWordSize));  // Restore IC data.
   __ addiu(SP, SP, Immediate(6 * kWordSize));
 
   __ LeaveStubFrame();
 
-  __ lw(T2, FieldAddress(T0, Function::code_offset()));
-  __ lw(T2, FieldAddress(T2, Code::instructions_offset()));
+  __ lw(T2, FieldAddress(T0, Function::instructions_offset()));
   __ AddImmediate(T2, Instructions::HeaderSize() - kHeapObjectTag);
   __ jr(T2);
 }
 
 
 // Called for inline allocation of arrays.
 // Input parameters:
 //   RA: return address.
 //   A1: Array length as Smi (must be preserved).
 //   A0: array element type (either NULL or an instantiated type).
@@ skipping 878 matching lines @@
   __ bgez(T5, &call_target_function);  // No overflow.
   __ delay_slot()->sw(T4, Address(T0, count_offset));
 
   __ LoadImmediate(T1, Smi::RawValue(Smi::kMaxValue));
   __ sw(T1, Address(T0, count_offset));
 
   __ Bind(&call_target_function);
   // T0 <- T3: Target function.
   __ mov(T0, T3);
   Label is_compiled;
-  __ lw(T4, FieldAddress(T0, Function::code_offset()));
-  __ lw(T4, FieldAddress(T4, Code::instructions_offset()));
+  __ lw(T4, FieldAddress(T0, Function::instructions_offset()));
   __ AddImmediate(T4, Instructions::HeaderSize() - kHeapObjectTag);
   __ jr(T4);
 
   // Instance in T3, return its class-id in T3 as Smi.
   __ Bind(&get_class_id_as_smi);
   Label not_smi;
   // Test if Smi -> load Smi class for comparison.
   __ andi(CMPRES1, T3, Immediate(kSmiTagMask));
   __ bne(CMPRES1, ZR, &not_smi);
   __ jr(RA);
@@ skipping 123 matching lines @@
   __ LoadImmediate(T1, Smi::RawValue(Smi::kMaxValue));
   __ sw(T1, Address(T0, count_offset));
 
   __ Bind(&increment_done);
 
   // Load arguments descriptor into S4.
   __ lw(S4,  FieldAddress(S5, ICData::arguments_descriptor_offset()));
 
   // Get function and call it, if possible.
   __ lw(T0, Address(T0, target_offset));
-  __ lw(T4, FieldAddress(T0, Function::code_offset()));
+  __ lw(T4, FieldAddress(T0, Function::instructions_offset()));
 
-  // T4: target code.
-  __ lw(T4, FieldAddress(T4, Code::instructions_offset()));
+  // T4: target instructions.
   __ AddImmediate(T4, Instructions::HeaderSize() - kHeapObjectTag);
   __ jr(T4);
 }
 
 
 void StubCode::GenerateTwoArgsUnoptimizedStaticCallStub(Assembler* assembler) {
   GenerateUsageCounterIncrement(assembler, T0);
   GenerateNArgsCheckInlineCacheStub(
       assembler, 2, kStaticCallMissHandlerTwoArgsRuntimeEntry);
 }
 
 
 // Stub for compiling a function and jumping to the compiled code.
 // S5: IC-Data (for methods).
 // S4: Arguments descriptor.
 // T0: Function.
 void StubCode::GenerateLazyCompileStub(Assembler* assembler) {
   __ EnterStubFrame();
   __ addiu(SP, SP, Immediate(-3 * kWordSize));
   __ sw(S5, Address(SP, 2 * kWordSize));  // Preserve IC data object.
   __ sw(S4, Address(SP, 1 * kWordSize));  // Preserve args descriptor array.
   __ sw(T0, Address(SP, 0 * kWordSize));  // Pass function.
   __ CallRuntime(kCompileFunctionRuntimeEntry, 1);
   __ lw(T0, Address(SP, 0 * kWordSize));  // Restore function.
   __ lw(S4, Address(SP, 1 * kWordSize));  // Restore args descriptor array.
   __ lw(S5, Address(SP, 2 * kWordSize));  // Restore IC data array.
   __ addiu(SP, SP, Immediate(3 * kWordSize));
   __ LeaveStubFrame();
 
-  __ lw(T2, FieldAddress(T0, Function::code_offset()));
-  __ lw(T2, FieldAddress(T2, Code::instructions_offset()));
+  __ lw(T2, FieldAddress(T0, Function::instructions_offset()));
   __ AddImmediate(T2, Instructions::HeaderSize() - kHeapObjectTag);
   __ jr(T2);
 }
 
 
 void StubCode::GenerateBreakpointRuntimeStub(Assembler* assembler) {
   __ Comment("BreakpointRuntime stub");
   __ EnterStubFrame();
   __ addiu(SP, SP, Immediate(-3 * kWordSize));
   __ sw(S5, Address(SP, 2 * kWordSize));
@@ skipping 333 matching lines @@
   const Register right = T0;
   __ lw(left, Address(SP, 1 * kWordSize));
   __ lw(right, Address(SP, 0 * kWordSize));
   GenerateIdenticalWithNumberCheckStub(assembler, left, right, temp1, temp2);
   __ Ret();
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_MIPS