[builtins] Migrate Math.log to TurboFan.

src/compiler/arm/code-generator-arm.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/arm/macro-assembler-arm.h"
 #include "src/ast/scopes.h"
 #include "src/compiler/code-generator-impl.h"
 #include "src/compiler/gap-resolver.h"
@@ skipping 975 matching lines @@
       __ PrepareCallCFunction(0, 2, kScratchReg);
       __ MovToFloatParameters(i.InputFloat64Register(0),
                               i.InputFloat64Register(1));
       __ CallCFunction(ExternalReference::mod_two_doubles_operation(isolate()),
                        0, 2);
       // Move the result in the double result register.
       __ MovFromFloatResult(i.OutputFloat64Register());
       DCHECK_EQ(LeaveCC, i.OutputSBit());
       break;
     }
+    case kArmVlogF64: {
+      // TODO(bmeurer): We should really get rid of this special instruction,
+      // and generate a CallAddress instruction instead.
+      FrameScope scope(masm(), StackFrame::MANUAL);
+      __ PrepareCallCFunction(0, 1, kScratchReg);
+      __ MovToFloatParameter(i.InputFloat64Register(0));
+      __ CallCFunction(ExternalReference::math_log_double_function(isolate()),
+                       0, 1);
+      // Move the result in the double result register.
+      __ MovFromFloatResult(i.OutputFloat64Register());
+      DCHECK_EQ(LeaveCC, i.OutputSBit());
+      break;
+    }
     case kArmVsqrtF64:
       __ vsqrt(i.OutputFloat64Register(), i.InputFloat64Register(0));
       break;
     case kArmVabsF64:
       __ vabs(i.OutputFloat64Register(), i.InputFloat64Register(0));
       break;
     case kArmVnegF64:
       __ vneg(i.OutputFloat64Register(), i.InputFloat64Register(0));
       break;
     case kArmVrintmF32:
@@ skipping 688 matching lines @@
       padding_size -= v8::internal::Assembler::kInstrSize;
     }
   }
 }
 
 #undef __
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8