MIPS: Use JIC/JIALC offset when possible

src/builtins/mips/builtins-mips.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #if V8_TARGET_ARCH_MIPS
 
 #include "src/codegen.h"
 #include "src/debug/debug.h"
 #include "src/deoptimizer.h"
 #include "src/full-codegen/full-codegen.h"
@@ skipping 510 matching lines @@
     __ SmiTag(a0);
     __ Push(a0, a1, a3, a1);
 
     __ CallRuntime(function_id, 1);
 
     // Restore target function and new target.
     __ Pop(a0, a1, a3);
     __ SmiUntag(a0);
   }
 
-  __ Addu(at, v0, Operand(Code::kHeaderSize - kHeapObjectTag));
-  __ Jump(at);
+  if (IsMipsArchVariant(kMips32r6)) {
+    __ Jump(v0, Code::kHeaderSize - kHeapObjectTag);

[ivica.bogosavljevic, 2016/12/05 10:48:47]

Common routine

+  } else {
+    __ Addu(at, v0, Operand(Code::kHeaderSize - kHeapObjectTag));
+    __ Jump(at);
+  }
 }
 
 void Builtins::Generate_InOptimizationQueue(MacroAssembler* masm) {
   // Checking whether the queued function is ready for install is optional,
   // since we come across interrupts and stack checks elsewhere.  However,
   // not checking may delay installing ready functions, and always checking
   // would be quite expensive.  A good compromise is to first check against
   // stack limit as a cue for an interrupt signal.
   Label ok;
   __ LoadRoot(t0, Heap::kStackLimitRootIndex);
@@ skipping 2401 matching lines @@
     __ break_(0xCC);
   }
 }
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_MIPS