PPC: [builtins] Migrate Math.log to TurboFan.

src/compiler/ppc/instruction-scheduler-ppc.cc

 // Copyright 2015 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/instruction-scheduler.h"
 
 namespace v8 {
 namespace internal {
 namespace compiler {
 
@@ skipping 41 matching lines @@
     case kPPC_Div32:
     case kPPC_Div64:
     case kPPC_DivU32:
     case kPPC_DivU64:
     case kPPC_DivDouble:
     case kPPC_Mod32:
     case kPPC_Mod64:
     case kPPC_ModU32:
     case kPPC_ModU64:
     case kPPC_ModDouble:
+    case kPPC_LogDouble:
     case kPPC_Neg:
     case kPPC_NegDouble:
     case kPPC_SqrtDouble:
     case kPPC_FloorDouble:
     case kPPC_CeilDouble:
     case kPPC_TruncateDouble:
     case kPPC_RoundDouble:
     case kPPC_MaxDouble:
     case kPPC_MinDouble:
     case kPPC_AbsDouble:
@@ skipping 71 matching lines @@
 
 
 int InstructionScheduler::GetInstructionLatency(const Instruction* instr) {
   // TODO(all): Add instruction cost modeling.
   return 1;
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8