PPC: [builtins] Migrate Math.log to 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 419 matching lines @@
     __ PrepareCallCFunction(0, 2, kScratchReg);                               \
     __ MovToFloatParameters(i.InputDoubleRegister(0),                         \
                             i.InputDoubleRegister(1));                        \
     __ CallCFunction(ExternalReference::mod_two_doubles_operation(isolate()), \
                      0, 2);                                                   \
     __ MovFromFloatResult(i.OutputDoubleRegister());                          \
     DCHECK_EQ(LeaveRC, i.OutputRCBit());                                      \
   } while (0)
 
 
+#define ASSEMBLE_FLOAT_LOG()                                                  \
+  do {                                                                        \
+    FrameScope scope(masm(), StackFrame::MANUAL);                             \
+    __ PrepareCallCFunction(0, 1, kScratchReg);                               \
+    __ MovToFloatParameter(i.InputDoubleRegister(0));                        \
+    __ CallCFunction(ExternalReference::math_log_double_function(isolate()),  \
+                     0, 1);                                                   \
+    __ MovFromFloatResult(i.OutputDoubleRegister());                          \
+    DCHECK_EQ(LeaveRC, i.OutputRCBit());                                      \
+  } while (0)
+
 #define ASSEMBLE_FLOAT_MAX(scratch_reg)                                       \
   do {                                                                        \
     __ fsub(scratch_reg, i.InputDoubleRegister(0), i.InputDoubleRegister(1)); \
     __ fsel(i.OutputDoubleRegister(), scratch_reg, i.InputDoubleRegister(0),  \
             i.InputDoubleRegister(1));                                        \
   } while (0)
 
 
 #define ASSEMBLE_FLOAT_MIN(scratch_reg)                                       \
   do {                                                                        \
@@ skipping 772 matching lines @@
 #if V8_TARGET_ARCH_PPC64
     case kPPC_ModU64:
       ASSEMBLE_MODULO(divdu, mulld);
       break;
 #endif
     case kPPC_ModDouble:
       // TODO(bmeurer): We should really get rid of this special instruction,
       // and generate a CallAddress instruction instead.
       ASSEMBLE_FLOAT_MODULO();
       break;
+    case kPPC_LogDouble:
+      // TODO(bmeurer): We should really get rid of this special instruction,
+      // and generate a CallAddress instruction instead.
+      ASSEMBLE_FLOAT_LOG();
+      break;
     case kPPC_Neg:
       __ neg(i.OutputRegister(), i.InputRegister(0), LeaveOE, i.OutputRCBit());
       break;
     case kPPC_MaxDouble:
       ASSEMBLE_FLOAT_MAX(kScratchDoubleReg);
       break;
     case kPPC_MinDouble:
       ASSEMBLE_FLOAT_MIN(kScratchDoubleReg);
       break;
     case kPPC_AbsDouble:
@@ skipping 872 matching lines @@
       padding_size -= v8::internal::Assembler::kInstrSize;
     }
   }
 }
 
 #undef __
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8