[turbofan] Add initial support for SOFT deopts.

src/compiler/mips64/code-generator-mips64.cc

 // Copyright 2014 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/ast/scopes.h"
 #include "src/compiler/code-generator.h"
 #include "src/compiler/code-generator-impl.h"
 #include "src/compiler/gap-resolver.h"
 #include "src/compiler/node-matchers.h"
 #include "src/compiler/osr.h"
@@ skipping 569 matching lines @@
       break;
     case kArchTableSwitch:
       AssembleArchTableSwitch(instr);
       break;
     case kArchNop:
       // don't emit code for nops.
       break;
     case kArchDeoptimize: {
       int deopt_state_id =
           BuildTranslation(instr, -1, 0, OutputFrameStateCombine::Ignore());
-      AssembleDeoptimizerCall(deopt_state_id, Deoptimizer::EAGER);
+      Deoptimizer::BailoutType bailout_type =
+          Deoptimizer::BailoutType(MiscField::decode(instr->opcode()));
+      AssembleDeoptimizerCall(deopt_state_id, bailout_type);
       break;
     }
     case kArchRet:
       AssembleReturn();
       break;
     case kArchStackPointer:
       __ mov(i.OutputRegister(), sp);
       break;
     case kArchFramePointer:
       __ mov(i.OutputRegister(), fp);
@@ skipping 1245 matching lines @@
       padding_size -= v8::internal::Assembler::kInstrSize;
     }
   }
 }
 
 #undef __
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8