Revert of [WIP][turbofan] Instruction scheduler for Turbofan.

src/compiler/ppc/code-generator-ppc.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/compiler/code-generator.h"
 
 #include "src/ast/scopes.h"
 #include "src/compiler/code-generator-impl.h"
 #include "src/compiler/gap-resolver.h"
 #include "src/compiler/node-matchers.h"
@@ skipping 737 matching lines @@
       break;
     case kArchLookupSwitch:
       AssembleArchLookupSwitch(instr);
       DCHECK_EQ(LeaveRC, i.OutputRCBit());
       break;
     case kArchTableSwitch:
       AssembleArchTableSwitch(instr);
       DCHECK_EQ(LeaveRC, i.OutputRCBit());
       break;
     case kArchNop:
-    case kArchThrowTerminator:
       // don't emit code for nops.
       DCHECK_EQ(LeaveRC, i.OutputRCBit());
       break;
     case kArchDeoptimize: {
       int deopt_state_id =
           BuildTranslation(instr, -1, 0, OutputFrameStateCombine::Ignore());
       Deoptimizer::BailoutType bailout_type =
           Deoptimizer::BailoutType(MiscField::decode(instr->opcode()));
       AssembleDeoptimizerCall(deopt_state_id, bailout_type);
       break;
@@ skipping 1037 matching lines @@
       padding_size -= v8::internal::Assembler::kInstrSize;
     }
   }
 }
 
 #undef __
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8