MIPS64: Eliminate ABI-dependent definitions.

src/mips64/deoptimizer-mips64.cc

 // Copyright 2011 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.
 
 #include "src/codegen.h"
 #include "src/deoptimizer.h"
 #include "src/full-codegen/full-codegen.h"
 #include "src/register-configuration.h"
 #include "src/safepoint-table.h"
 
@@ skipping 170 matching lines @@
 
   __ Dsubu(a4, fp, a4);
 
   // Allocate a new deoptimizer object.
   __ PrepareCallCFunction(6, a5);
   // Pass six arguments, according to O32 or n64 ABI. a0..a3 are same for both.
   __ li(a1, Operand(type()));  // bailout type,
   __ ld(a0, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset));
   // a2: bailout id already loaded.
   // a3: code address or 0 already loaded.
-  if (kMipsAbi == kN64) {
-    // a4: already has fp-to-sp delta.
-    __ li(a5, Operand(ExternalReference::isolate_address(isolate())));
-  } else {  // O32 abi.
-    // Pass four arguments in a0 to a3 and fifth & sixth arguments on stack.
-    __ sd(a4, CFunctionArgumentOperand(5));  // Fp-to-sp delta.
-    __ li(a5, Operand(ExternalReference::isolate_address(isolate())));
-    __ sd(a5, CFunctionArgumentOperand(6));  // Isolate.
-  }
+  // a4: already has fp-to-sp delta.
+  __ li(a5, Operand(ExternalReference::isolate_address(isolate())));
+
   // Call Deoptimizer::New().
   {
     AllowExternalCallThatCantCauseGC scope(masm());
     __ CallCFunction(ExternalReference::new_deoptimizer_function(isolate()), 6);
   }
 
   // Preserve "deoptimizer" object in register v0 and get the input
   // frame descriptor pointer to a1 (deoptimizer->input_);
   // Move deopt-obj to a0 for call to Deoptimizer::ComputeOutputFrames() below.
   __ mov(a0, v0);
@@ skipping 199 matching lines @@
   // No embedded constant pool support.
   UNREACHABLE();
 }
 
 
 #undef __
 
 
 }  // namespace internal
 }  // namespace v8