MIPS64: Use the Lsa() and Dlsa() macro/r6 instructions in existing code.

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 255 matching lines @@
   }
   __ pop(a0);  // Restore deoptimizer object (class Deoptimizer).
 
   // Replace the current (input) frame with the output frames.
   Label outer_push_loop, inner_push_loop,
       outer_loop_header, inner_loop_header;
   // Outer loop state: a4 = current "FrameDescription** output_",
   // a1 = one past the last FrameDescription**.
   __ lw(a1, MemOperand(a0, Deoptimizer::output_count_offset()));
   __ ld(a4, MemOperand(a0, Deoptimizer::output_offset()));  // a4 is output_.
-  __ dsll(a1, a1, kPointerSizeLog2);  // Count to offset.
-  __ daddu(a1, a4, a1);  // a1 = one past the last FrameDescription**.
+  __ Dlsa(a1, a4, a1, kPointerSizeLog2);
   __ BranchShort(&outer_loop_header);
   __ bind(&outer_push_loop);
   // Inner loop state: a2 = current FrameDescription*, a3 = loop index.
   __ ld(a2, MemOperand(a4, 0));  // output_[ix]
   __ ld(a3, MemOperand(a2, FrameDescription::frame_size_offset()));
   __ BranchShort(&inner_loop_header);
   __ bind(&inner_push_loop);
   __ Dsubu(a3, a3, Operand(sizeof(uint64_t)));
   __ Daddu(a6, a2, Operand(a3));
   __ ld(a7, MemOperand(a6, FrameDescription::frame_content_offset()));
@@ skipping 122 matching lines @@
   // No embedded constant pool support.
   UNREACHABLE();
 }
 
 
 #undef __
 
 
 }  // namespace internal
 }  // namespace v8