[refactoring] Split CodeAssemblerState out of CodeAssembler

src/builtins/builtins-math.cc

 // Copyright 2016 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/builtins/builtins.h"
 #include "src/builtins/builtins-utils.h"
 
 #include "src/code-factory.h"
 
 namespace v8 {
 namespace internal {
 
 // -----------------------------------------------------------------------------
 // ES6 section 20.2.2 Function Properties of the Math Object
 
 // ES6 section - 20.2.2.1 Math.abs ( x )
-void Builtins::Generate_MathAbs(CodeStubAssembler* assembler) {
+void Builtins::Generate_MathAbs(compiler::CodeAssemblerState* state) {
   typedef CodeStubAssembler::Label Label;
   typedef compiler::Node Node;
   typedef CodeStubAssembler::Variable Variable;
+  CodeStubAssembler assembler(state);
 
-  Node* context = assembler->Parameter(4);
+  Node* context = assembler.Parameter(4);
 
   // We might need to loop once for ToNumber conversion.
-  Variable var_x(assembler, MachineRepresentation::kTagged);
-  Label loop(assembler, &var_x);
-  var_x.Bind(assembler->Parameter(1));
-  assembler->Goto(&loop);
-  assembler->Bind(&loop);
+  Variable var_x(&assembler, MachineRepresentation::kTagged);
+  Label loop(&assembler, &var_x);
+  var_x.Bind(assembler.Parameter(1));
+  assembler.Goto(&loop);
+  assembler.Bind(&loop);
   {
     // Load the current {x} value.
     Node* x = var_x.value();
 
     // Check if {x} is a Smi or a HeapObject.
-    Label if_xissmi(assembler), if_xisnotsmi(assembler);
-    assembler->Branch(assembler->TaggedIsSmi(x), &if_xissmi, &if_xisnotsmi);
+    Label if_xissmi(&assembler), if_xisnotsmi(&assembler);
+    assembler.Branch(assembler.TaggedIsSmi(x), &if_xissmi, &if_xisnotsmi);
 
-    assembler->Bind(&if_xissmi);
+    assembler.Bind(&if_xissmi);
     {
       // Check if {x} is already positive.
-      Label if_xispositive(assembler), if_xisnotpositive(assembler);
-      assembler->BranchIfSmiLessThanOrEqual(
-          assembler->SmiConstant(Smi::FromInt(0)), x, &if_xispositive,
+      Label if_xispositive(&assembler), if_xisnotpositive(&assembler);
+      assembler.BranchIfSmiLessThanOrEqual(
+          assembler.SmiConstant(Smi::FromInt(0)), x, &if_xispositive,
           &if_xisnotpositive);
 
-      assembler->Bind(&if_xispositive);
+      assembler.Bind(&if_xispositive);
       {
         // Just return the input {x}.
-        assembler->Return(x);
+        assembler.Return(x);
       }
 
-      assembler->Bind(&if_xisnotpositive);
+      assembler.Bind(&if_xisnotpositive);
       {
         // Try to negate the {x} value.
-        Node* pair = assembler->IntPtrSubWithOverflow(
-            assembler->IntPtrConstant(0), assembler->BitcastTaggedToWord(x));
-        Node* overflow = assembler->Projection(1, pair);
-        Label if_overflow(assembler, Label::kDeferred),
-            if_notoverflow(assembler);
-        assembler->Branch(overflow, &if_overflow, &if_notoverflow);
+        Node* pair = assembler.IntPtrSubWithOverflow(
+            assembler.IntPtrConstant(0), assembler.BitcastTaggedToWord(x));
+        Node* overflow = assembler.Projection(1, pair);
+        Label if_overflow(&assembler, Label::kDeferred),
+            if_notoverflow(&assembler);
+        assembler.Branch(overflow, &if_overflow, &if_notoverflow);
 
-        assembler->Bind(&if_notoverflow);
+        assembler.Bind(&if_notoverflow);
         {
           // There is a Smi representation for negated {x}.
-          Node* result = assembler->Projection(0, pair);
-          result = assembler->BitcastWordToTagged(result);
-          assembler->Return(result);
+          Node* result = assembler.Projection(0, pair);
+          result = assembler.BitcastWordToTagged(result);
+          assembler.Return(result);
         }
 
-        assembler->Bind(&if_overflow);
+        assembler.Bind(&if_overflow);
         {
-          Node* result = assembler->NumberConstant(0.0 - Smi::kMinValue);
-          assembler->Return(result);
+          Node* result = assembler.NumberConstant(0.0 - Smi::kMinValue);
+          assembler.Return(result);
         }
       }
     }
 
-    assembler->Bind(&if_xisnotsmi);
+    assembler.Bind(&if_xisnotsmi);
     {
       // Check if {x} is a HeapNumber.
-      Label if_xisheapnumber(assembler),
-          if_xisnotheapnumber(assembler, Label::kDeferred);
-      assembler->Branch(
-          assembler->WordEqual(assembler->LoadMap(x),
-                               assembler->HeapNumberMapConstant()),
-          &if_xisheapnumber, &if_xisnotheapnumber);
+      Label if_xisheapnumber(&assembler),
+          if_xisnotheapnumber(&assembler, Label::kDeferred);
+      assembler.Branch(assembler.WordEqual(assembler.LoadMap(x),
+                                           assembler.HeapNumberMapConstant()),
+                       &if_xisheapnumber, &if_xisnotheapnumber);
 
-      assembler->Bind(&if_xisheapnumber);
+      assembler.Bind(&if_xisheapnumber);
       {
-        Node* x_value = assembler->LoadHeapNumberValue(x);
-        Node* value = assembler->Float64Abs(x_value);
-        Node* result = assembler->AllocateHeapNumberWithValue(value);
-        assembler->Return(result);
+        Node* x_value = assembler.LoadHeapNumberValue(x);
+        Node* value = assembler.Float64Abs(x_value);
+        Node* result = assembler.AllocateHeapNumberWithValue(value);
+        assembler.Return(result);
       }
 
-      assembler->Bind(&if_xisnotheapnumber);
+      assembler.Bind(&if_xisnotheapnumber);
       {
         // Need to convert {x} to a Number first.
-        Callable callable =
-            CodeFactory::NonNumberToNumber(assembler->isolate());
-        var_x.Bind(assembler->CallStub(callable, context, x));
-        assembler->Goto(&loop);
+        Callable callable = CodeFactory::NonNumberToNumber(assembler.isolate());
+        var_x.Bind(assembler.CallStub(callable, context, x));
+        assembler.Goto(&loop);
       }
     }
   }
 }
 
 namespace {
 
 void Generate_MathRoundingOperation(
     CodeStubAssembler* assembler,
     compiler::Node* (CodeStubAssembler::*float64op)(compiler::Node*)) {
@@ skipping 62 matching lines @@
   Node* context = assembler->Parameter(4);
   Node* x_value = assembler->TruncateTaggedToFloat64(context, x);
   Node* value = (assembler->*float64op)(x_value);
   Node* result = assembler->AllocateHeapNumberWithValue(value);
   assembler->Return(result);
 }
 
 }  // namespace
 
 // ES6 section 20.2.2.2 Math.acos ( x )
-void Builtins::Generate_MathAcos(CodeStubAssembler* assembler) {
-  Generate_MathUnaryOperation(assembler, &CodeStubAssembler::Float64Acos);
+void Builtins::Generate_MathAcos(compiler::CodeAssemblerState* state) {
+  CodeStubAssembler assembler(state);
+  Generate_MathUnaryOperation(&assembler, &CodeStubAssembler::Float64Acos);
 }
 
 // ES6 section 20.2.2.3 Math.acosh ( x )
-void Builtins::Generate_MathAcosh(CodeStubAssembler* assembler) {
-  Generate_MathUnaryOperation(assembler, &CodeStubAssembler::Float64Acosh);
+void Builtins::Generate_MathAcosh(compiler::CodeAssemblerState* state) {
+  CodeStubAssembler assembler(state);
+  Generate_MathUnaryOperation(&assembler, &CodeStubAssembler::Float64Acosh);
 }
 
 // ES6 section 20.2.2.4 Math.asin ( x )
-void Builtins::Generate_MathAsin(CodeStubAssembler* assembler) {
-  Generate_MathUnaryOperation(assembler, &CodeStubAssembler::Float64Asin);
+void Builtins::Generate_MathAsin(compiler::CodeAssemblerState* state) {
+  CodeStubAssembler assembler(state);
+  Generate_MathUnaryOperation(&assembler, &CodeStubAssembler::Float64Asin);
 }
 
 // ES6 section 20.2.2.5 Math.asinh ( x )
-void Builtins::Generate_MathAsinh(CodeStubAssembler* assembler) {
-  Generate_MathUnaryOperation(assembler, &CodeStubAssembler::Float64Asinh);
+void Builtins::Generate_MathAsinh(compiler::CodeAssemblerState* state) {
+  CodeStubAssembler assembler(state);
+  Generate_MathUnaryOperation(&assembler, &CodeStubAssembler::Float64Asinh);
 }
 
 // ES6 section 20.2.2.6 Math.atan ( x )
-void Builtins::Generate_MathAtan(CodeStubAssembler* assembler) {
-  Generate_MathUnaryOperation(assembler, &CodeStubAssembler::Float64Atan);
+void Builtins::Generate_MathAtan(compiler::CodeAssemblerState* state) {
+  CodeStubAssembler assembler(state);
+  Generate_MathUnaryOperation(&assembler, &CodeStubAssembler::Float64Atan);
 }
 
 // ES6 section 20.2.2.7 Math.atanh ( x )
-void Builtins::Generate_MathAtanh(CodeStubAssembler* assembler) {
-  Generate_MathUnaryOperation(assembler, &CodeStubAssembler::Float64Atanh);
+void Builtins::Generate_MathAtanh(compiler::CodeAssemblerState* state) {
+  CodeStubAssembler assembler(state);
+  Generate_MathUnaryOperation(&assembler, &CodeStubAssembler::Float64Atanh);
 }
 
 // ES6 section 20.2.2.8 Math.atan2 ( y, x )
-void Builtins::Generate_MathAtan2(CodeStubAssembler* assembler) {
+void Builtins::Generate_MathAtan2(compiler::CodeAssemblerState* state) {
   using compiler::Node;
+  CodeStubAssembler assembler(state);
 
-  Node* y = assembler->Parameter(1);
-  Node* x = assembler->Parameter(2);
-  Node* context = assembler->Parameter(5);
-  Node* y_value = assembler->TruncateTaggedToFloat64(context, y);
-  Node* x_value = assembler->TruncateTaggedToFloat64(context, x);
-  Node* value = assembler->Float64Atan2(y_value, x_value);
-  Node* result = assembler->AllocateHeapNumberWithValue(value);
-  assembler->Return(result);
+  Node* y = assembler.Parameter(1);
+  Node* x = assembler.Parameter(2);
+  Node* context = assembler.Parameter(5);
+  Node* y_value = assembler.TruncateTaggedToFloat64(context, y);
+  Node* x_value = assembler.TruncateTaggedToFloat64(context, x);
+  Node* value = assembler.Float64Atan2(y_value, x_value);
+  Node* result = assembler.AllocateHeapNumberWithValue(value);
+  assembler.Return(result);
 }
 
 // ES6 section 20.2.2.10 Math.ceil ( x )
-void Builtins::Generate_MathCeil(CodeStubAssembler* assembler) {
-  Generate_MathRoundingOperation(assembler, &CodeStubAssembler::Float64Ceil);
+void Builtins::Generate_MathCeil(compiler::CodeAssemblerState* state) {
+  CodeStubAssembler assembler(state);
+  Generate_MathRoundingOperation(&assembler, &CodeStubAssembler::Float64Ceil);
 }
 
 // ES6 section 20.2.2.9 Math.cbrt ( x )
-void Builtins::Generate_MathCbrt(CodeStubAssembler* assembler) {
-  Generate_MathUnaryOperation(assembler, &CodeStubAssembler::Float64Cbrt);
+void Builtins::Generate_MathCbrt(compiler::CodeAssemblerState* state) {
+  CodeStubAssembler assembler(state);
+  Generate_MathUnaryOperation(&assembler, &CodeStubAssembler::Float64Cbrt);
 }
 
 // ES6 section 20.2.2.11 Math.clz32 ( x )
-void Builtins::Generate_MathClz32(CodeStubAssembler* assembler) {
+void Builtins::Generate_MathClz32(compiler::CodeAssemblerState* state) {
   typedef CodeStubAssembler::Label Label;
   typedef compiler::Node Node;
   typedef CodeStubAssembler::Variable Variable;
+  CodeStubAssembler assembler(state);
 
-  Node* context = assembler->Parameter(4);
+  Node* context = assembler.Parameter(4);
 
   // Shared entry point for the clz32 operation.
-  Variable var_clz32_x(assembler, MachineRepresentation::kWord32);
-  Label do_clz32(assembler);
+  Variable var_clz32_x(&assembler, MachineRepresentation::kWord32);
+  Label do_clz32(&assembler);
 
   // We might need to loop once for ToNumber conversion.
-  Variable var_x(assembler, MachineRepresentation::kTagged);
-  Label loop(assembler, &var_x);
-  var_x.Bind(assembler->Parameter(1));
-  assembler->Goto(&loop);
-  assembler->Bind(&loop);
+  Variable var_x(&assembler, MachineRepresentation::kTagged);
+  Label loop(&assembler, &var_x);
+  var_x.Bind(assembler.Parameter(1));
+  assembler.Goto(&loop);
+  assembler.Bind(&loop);
   {
     // Load the current {x} value.
     Node* x = var_x.value();
 
     // Check if {x} is a Smi or a HeapObject.
-    Label if_xissmi(assembler), if_xisnotsmi(assembler);
-    assembler->Branch(assembler->TaggedIsSmi(x), &if_xissmi, &if_xisnotsmi);
+    Label if_xissmi(&assembler), if_xisnotsmi(&assembler);
+    assembler.Branch(assembler.TaggedIsSmi(x), &if_xissmi, &if_xisnotsmi);
 
-    assembler->Bind(&if_xissmi);
+    assembler.Bind(&if_xissmi);
     {
-      var_clz32_x.Bind(assembler->SmiToWord32(x));
-      assembler->Goto(&do_clz32);
+      var_clz32_x.Bind(assembler.SmiToWord32(x));
+      assembler.Goto(&do_clz32);
     }
 
-    assembler->Bind(&if_xisnotsmi);
+    assembler.Bind(&if_xisnotsmi);
     {
       // Check if {x} is a HeapNumber.
-      Label if_xisheapnumber(assembler),
-          if_xisnotheapnumber(assembler, Label::kDeferred);
-      assembler->Branch(
-          assembler->WordEqual(assembler->LoadMap(x),
-                               assembler->HeapNumberMapConstant()),
-          &if_xisheapnumber, &if_xisnotheapnumber);
+      Label if_xisheapnumber(&assembler),
+          if_xisnotheapnumber(&assembler, Label::kDeferred);
+      assembler.Branch(assembler.WordEqual(assembler.LoadMap(x),
+                                           assembler.HeapNumberMapConstant()),
+                       &if_xisheapnumber, &if_xisnotheapnumber);
 
-      assembler->Bind(&if_xisheapnumber);
+      assembler.Bind(&if_xisheapnumber);
       {
-        var_clz32_x.Bind(assembler->TruncateHeapNumberValueToWord32(x));
-        assembler->Goto(&do_clz32);
+        var_clz32_x.Bind(assembler.TruncateHeapNumberValueToWord32(x));
+        assembler.Goto(&do_clz32);
       }
 
-      assembler->Bind(&if_xisnotheapnumber);
+      assembler.Bind(&if_xisnotheapnumber);
       {
         // Need to convert {x} to a Number first.
-        Callable callable =
-            CodeFactory::NonNumberToNumber(assembler->isolate());
-        var_x.Bind(assembler->CallStub(callable, context, x));
-        assembler->Goto(&loop);
+        Callable callable = CodeFactory::NonNumberToNumber(assembler.isolate());
+        var_x.Bind(assembler.CallStub(callable, context, x));
+        assembler.Goto(&loop);
       }
     }
   }
 
-  assembler->Bind(&do_clz32);
+  assembler.Bind(&do_clz32);
   {
     Node* x_value = var_clz32_x.value();
-    Node* value = assembler->Word32Clz(x_value);
-    Node* result = assembler->ChangeInt32ToTagged(value);
-    assembler->Return(result);
+    Node* value = assembler.Word32Clz(x_value);
+    Node* result = assembler.ChangeInt32ToTagged(value);
+    assembler.Return(result);
   }
 }
 
 // ES6 section 20.2.2.12 Math.cos ( x )
-void Builtins::Generate_MathCos(CodeStubAssembler* assembler) {
-  Generate_MathUnaryOperation(assembler, &CodeStubAssembler::Float64Cos);
+void Builtins::Generate_MathCos(compiler::CodeAssemblerState* state) {
+  CodeStubAssembler assembler(state);
+  Generate_MathUnaryOperation(&assembler, &CodeStubAssembler::Float64Cos);
 }
 
 // ES6 section 20.2.2.13 Math.cosh ( x )
-void Builtins::Generate_MathCosh(CodeStubAssembler* assembler) {
-  Generate_MathUnaryOperation(assembler, &CodeStubAssembler::Float64Cosh);
+void Builtins::Generate_MathCosh(compiler::CodeAssemblerState* state) {
+  CodeStubAssembler assembler(state);
+  Generate_MathUnaryOperation(&assembler, &CodeStubAssembler::Float64Cosh);
 }
 
 // ES6 section 20.2.2.14 Math.exp ( x )
-void Builtins::Generate_MathExp(CodeStubAssembler* assembler) {
-  Generate_MathUnaryOperation(assembler, &CodeStubAssembler::Float64Exp);
+void Builtins::Generate_MathExp(compiler::CodeAssemblerState* state) {
+  CodeStubAssembler assembler(state);
+  Generate_MathUnaryOperation(&assembler, &CodeStubAssembler::Float64Exp);
 }
 
 // ES6 section 20.2.2.15 Math.expm1 ( x )
-void Builtins::Generate_MathExpm1(CodeStubAssembler* assembler) {
-  Generate_MathUnaryOperation(assembler, &CodeStubAssembler::Float64Expm1);
+void Builtins::Generate_MathExpm1(compiler::CodeAssemblerState* state) {
+  CodeStubAssembler assembler(state);
+  Generate_MathUnaryOperation(&assembler, &CodeStubAssembler::Float64Expm1);
 }
 
 // ES6 section 20.2.2.16 Math.floor ( x )
-void Builtins::Generate_MathFloor(CodeStubAssembler* assembler) {
-  Generate_MathRoundingOperation(assembler, &CodeStubAssembler::Float64Floor);
+void Builtins::Generate_MathFloor(compiler::CodeAssemblerState* state) {
+  CodeStubAssembler assembler(state);
+  Generate_MathRoundingOperation(&assembler, &CodeStubAssembler::Float64Floor);
 }
 
 // ES6 section 20.2.2.17 Math.fround ( x )
-void Builtins::Generate_MathFround(CodeStubAssembler* assembler) {
+void Builtins::Generate_MathFround(compiler::CodeAssemblerState* state) {
   using compiler::Node;
+  CodeStubAssembler assembler(state);
 
-  Node* x = assembler->Parameter(1);
-  Node* context = assembler->Parameter(4);
-  Node* x_value = assembler->TruncateTaggedToFloat64(context, x);
-  Node* value32 = assembler->TruncateFloat64ToFloat32(x_value);
-  Node* value = assembler->ChangeFloat32ToFloat64(value32);
-  Node* result = assembler->AllocateHeapNumberWithValue(value);
-  assembler->Return(result);
+  Node* x = assembler.Parameter(1);
+  Node* context = assembler.Parameter(4);
+  Node* x_value = assembler.TruncateTaggedToFloat64(context, x);
+  Node* value32 = assembler.TruncateFloat64ToFloat32(x_value);
+  Node* value = assembler.ChangeFloat32ToFloat64(value32);
+  Node* result = assembler.AllocateHeapNumberWithValue(value);
+  assembler.Return(result);
 }
 
 // ES6 section 20.2.2.18 Math.hypot ( value1, value2, ...values )
 BUILTIN(MathHypot) {
   HandleScope scope(isolate);
   int const length = args.length() - 1;
   if (length == 0) return Smi::kZero;
   DCHECK_LT(0, length);
   double max = 0;
   bool one_arg_is_nan = false;
@@ skipping 35 matching lines @@
     double summand = n * n - compensation;
     double preliminary = sum + summand;
     compensation = (preliminary - sum) - summand;
     sum = preliminary;
   }
 
   return *isolate->factory()->NewNumber(std::sqrt(sum) * max);
 }
 
 // ES6 section 20.2.2.19 Math.imul ( x, y )
-void Builtins::Generate_MathImul(CodeStubAssembler* assembler) {
+void Builtins::Generate_MathImul(compiler::CodeAssemblerState* state) {
   using compiler::Node;
+  CodeStubAssembler assembler(state);
 
-  Node* x = assembler->Parameter(1);
-  Node* y = assembler->Parameter(2);
-  Node* context = assembler->Parameter(5);
-  Node* x_value = assembler->TruncateTaggedToWord32(context, x);
-  Node* y_value = assembler->TruncateTaggedToWord32(context, y);
-  Node* value = assembler->Int32Mul(x_value, y_value);
-  Node* result = assembler->ChangeInt32ToTagged(value);
-  assembler->Return(result);
+  Node* x = assembler.Parameter(1);
+  Node* y = assembler.Parameter(2);
+  Node* context = assembler.Parameter(5);
+  Node* x_value = assembler.TruncateTaggedToWord32(context, x);
+  Node* y_value = assembler.TruncateTaggedToWord32(context, y);
+  Node* value = assembler.Int32Mul(x_value, y_value);
+  Node* result = assembler.ChangeInt32ToTagged(value);
+  assembler.Return(result);
 }
 
 // ES6 section 20.2.2.20 Math.log ( x )
-void Builtins::Generate_MathLog(CodeStubAssembler* assembler) {
-  Generate_MathUnaryOperation(assembler, &CodeStubAssembler::Float64Log);
+void Builtins::Generate_MathLog(compiler::CodeAssemblerState* state) {
+  CodeStubAssembler assembler(state);
+  Generate_MathUnaryOperation(&assembler, &CodeStubAssembler::Float64Log);
 }
 
 // ES6 section 20.2.2.21 Math.log1p ( x )
-void Builtins::Generate_MathLog1p(CodeStubAssembler* assembler) {
-  Generate_MathUnaryOperation(assembler, &CodeStubAssembler::Float64Log1p);
+void Builtins::Generate_MathLog1p(compiler::CodeAssemblerState* state) {
+  CodeStubAssembler assembler(state);
+  Generate_MathUnaryOperation(&assembler, &CodeStubAssembler::Float64Log1p);
 }
 
 // ES6 section 20.2.2.22 Math.log10 ( x )
-void Builtins::Generate_MathLog10(CodeStubAssembler* assembler) {
-  Generate_MathUnaryOperation(assembler, &CodeStubAssembler::Float64Log10);
+void Builtins::Generate_MathLog10(compiler::CodeAssemblerState* state) {
+  CodeStubAssembler assembler(state);
+  Generate_MathUnaryOperation(&assembler, &CodeStubAssembler::Float64Log10);
 }
 
 // ES6 section 20.2.2.23 Math.log2 ( x )
-void Builtins::Generate_MathLog2(CodeStubAssembler* assembler) {
-  Generate_MathUnaryOperation(assembler, &CodeStubAssembler::Float64Log2);
+void Builtins::Generate_MathLog2(compiler::CodeAssemblerState* state) {
+  CodeStubAssembler assembler(state);
+  Generate_MathUnaryOperation(&assembler, &CodeStubAssembler::Float64Log2);
 }
 
 // ES6 section 20.2.2.26 Math.pow ( x, y )
-void Builtins::Generate_MathPow(CodeStubAssembler* assembler) {
+void Builtins::Generate_MathPow(compiler::CodeAssemblerState* state) {
   using compiler::Node;
+  CodeStubAssembler assembler(state);
 
-  Node* x = assembler->Parameter(1);
-  Node* y = assembler->Parameter(2);
-  Node* context = assembler->Parameter(5);
-  Node* x_value = assembler->TruncateTaggedToFloat64(context, x);
-  Node* y_value = assembler->TruncateTaggedToFloat64(context, y);
-  Node* value = assembler->Float64Pow(x_value, y_value);
-  Node* result = assembler->ChangeFloat64ToTagged(value);
-  assembler->Return(result);
+  Node* x = assembler.Parameter(1);
+  Node* y = assembler.Parameter(2);
+  Node* context = assembler.Parameter(5);
+  Node* x_value = assembler.TruncateTaggedToFloat64(context, x);
+  Node* y_value = assembler.TruncateTaggedToFloat64(context, y);
+  Node* value = assembler.Float64Pow(x_value, y_value);
+  Node* result = assembler.ChangeFloat64ToTagged(value);
+  assembler.Return(result);
 }
 
 // ES6 section 20.2.2.27 Math.random ( )
-void Builtins::Generate_MathRandom(CodeStubAssembler* assembler) {
+void Builtins::Generate_MathRandom(compiler::CodeAssemblerState* state) {
   using compiler::Node;
+  CodeStubAssembler assembler(state);
 
-  Node* context = assembler->Parameter(3);
-  Node* native_context = assembler->LoadNativeContext(context);
+  Node* context = assembler.Parameter(3);
+  Node* native_context = assembler.LoadNativeContext(context);
 
   // Load cache index.
-  CodeStubAssembler::Variable smi_index(assembler,
+  CodeStubAssembler::Variable smi_index(&assembler,
                                         MachineRepresentation::kTagged);
-  smi_index.Bind(assembler->LoadContextElement(
+  smi_index.Bind(assembler.LoadContextElement(
       native_context, Context::MATH_RANDOM_INDEX_INDEX));
 
   // Cached random numbers are exhausted if index is 0. Go to slow path.
-  CodeStubAssembler::Label if_cached(assembler);
-  assembler->GotoIf(assembler->SmiAbove(smi_index.value(),
-                                        assembler->SmiConstant(Smi::kZero)),
-                    &if_cached);
+  CodeStubAssembler::Label if_cached(&assembler);
+  assembler.GotoIf(
+      assembler.SmiAbove(smi_index.value(), assembler.SmiConstant(Smi::kZero)),
+      &if_cached);
 
   // Cache exhausted, populate the cache. Return value is the new index.
   smi_index.Bind(
-      assembler->CallRuntime(Runtime::kGenerateRandomNumbers, context));
-  assembler->Goto(&if_cached);
+      assembler.CallRuntime(Runtime::kGenerateRandomNumbers, context));
+  assembler.Goto(&if_cached);
 
   // Compute next index by decrement.
-  assembler->Bind(&if_cached);
-  Node* new_smi_index = assembler->SmiSub(
-      smi_index.value(), assembler->SmiConstant(Smi::FromInt(1)));
-  assembler->StoreContextElement(
+  assembler.Bind(&if_cached);
+  Node* new_smi_index = assembler.SmiSub(
+      smi_index.value(), assembler.SmiConstant(Smi::FromInt(1)));
+  assembler.StoreContextElement(
       native_context, Context::MATH_RANDOM_INDEX_INDEX, new_smi_index);
 
   // Load and return next cached random number.
-  Node* array = assembler->LoadContextElement(native_context,
-                                              Context::MATH_RANDOM_CACHE_INDEX);
-  Node* random = assembler->LoadFixedDoubleArrayElement(
+  Node* array = assembler.LoadContextElement(native_context,
+                                             Context::MATH_RANDOM_CACHE_INDEX);
+  Node* random = assembler.LoadFixedDoubleArrayElement(
       array, new_smi_index, MachineType::Float64(), 0,
       CodeStubAssembler::SMI_PARAMETERS);
-  assembler->Return(assembler->AllocateHeapNumberWithValue(random));
+  assembler.Return(assembler.AllocateHeapNumberWithValue(random));
 }
 
 // ES6 section 20.2.2.28 Math.round ( x )
-void Builtins::Generate_MathRound(CodeStubAssembler* assembler) {
-  Generate_MathRoundingOperation(assembler, &CodeStubAssembler::Float64Round);
+void Builtins::Generate_MathRound(compiler::CodeAssemblerState* state) {
+  CodeStubAssembler assembler(state);
+  Generate_MathRoundingOperation(&assembler, &CodeStubAssembler::Float64Round);
 }
 
 // ES6 section 20.2.2.29 Math.sign ( x )
-void Builtins::Generate_MathSign(CodeStubAssembler* assembler) {
+void Builtins::Generate_MathSign(compiler::CodeAssemblerState* state) {
   typedef CodeStubAssembler::Label Label;
   using compiler::Node;
+  CodeStubAssembler assembler(state);
 
   // Convert the {x} value to a Number.
-  Node* x = assembler->Parameter(1);
-  Node* context = assembler->Parameter(4);
-  Node* x_value = assembler->TruncateTaggedToFloat64(context, x);
+  Node* x = assembler.Parameter(1);
+  Node* context = assembler.Parameter(4);
+  Node* x_value = assembler.TruncateTaggedToFloat64(context, x);
 
   // Return -1 if {x} is negative, 1 if {x} is positive, or {x} itself.
-  Label if_xisnegative(assembler), if_xispositive(assembler);
-  assembler->GotoIf(
-      assembler->Float64LessThan(x_value, assembler->Float64Constant(0.0)),
+  Label if_xisnegative(&assembler), if_xispositive(&assembler);
+  assembler.GotoIf(
+      assembler.Float64LessThan(x_value, assembler.Float64Constant(0.0)),
       &if_xisnegative);
-  assembler->GotoIf(
-      assembler->Float64LessThan(assembler->Float64Constant(0.0), x_value),
+  assembler.GotoIf(
+      assembler.Float64LessThan(assembler.Float64Constant(0.0), x_value),
       &if_xispositive);
-  assembler->Return(assembler->ChangeFloat64ToTagged(x_value));
+  assembler.Return(assembler.ChangeFloat64ToTagged(x_value));
 
-  assembler->Bind(&if_xisnegative);
-  assembler->Return(assembler->SmiConstant(Smi::FromInt(-1)));
+  assembler.Bind(&if_xisnegative);
+  assembler.Return(assembler.SmiConstant(Smi::FromInt(-1)));
 
-  assembler->Bind(&if_xispositive);
-  assembler->Return(assembler->SmiConstant(Smi::FromInt(1)));
+  assembler.Bind(&if_xispositive);
+  assembler.Return(assembler.SmiConstant(Smi::FromInt(1)));
 }
 
 // ES6 section 20.2.2.30 Math.sin ( x )
-void Builtins::Generate_MathSin(CodeStubAssembler* assembler) {
-  Generate_MathUnaryOperation(assembler, &CodeStubAssembler::Float64Sin);
+void Builtins::Generate_MathSin(compiler::CodeAssemblerState* state) {
+  CodeStubAssembler assembler(state);
+  Generate_MathUnaryOperation(&assembler, &CodeStubAssembler::Float64Sin);
 }
 
 // ES6 section 20.2.2.31 Math.sinh ( x )
-void Builtins::Generate_MathSinh(CodeStubAssembler* assembler) {
-  Generate_MathUnaryOperation(assembler, &CodeStubAssembler::Float64Sinh);
+void Builtins::Generate_MathSinh(compiler::CodeAssemblerState* state) {
+  CodeStubAssembler assembler(state);
+  Generate_MathUnaryOperation(&assembler, &CodeStubAssembler::Float64Sinh);
 }
 
 // ES6 section 20.2.2.32 Math.sqrt ( x )
-void Builtins::Generate_MathSqrt(CodeStubAssembler* assembler) {
-  Generate_MathUnaryOperation(assembler, &CodeStubAssembler::Float64Sqrt);
+void Builtins::Generate_MathSqrt(compiler::CodeAssemblerState* state) {
+  CodeStubAssembler assembler(state);
+  Generate_MathUnaryOperation(&assembler, &CodeStubAssembler::Float64Sqrt);
 }
 
 // ES6 section 20.2.2.33 Math.tan ( x )
-void Builtins::Generate_MathTan(CodeStubAssembler* assembler) {
-  Generate_MathUnaryOperation(assembler, &CodeStubAssembler::Float64Tan);
+void Builtins::Generate_MathTan(compiler::CodeAssemblerState* state) {
+  CodeStubAssembler assembler(state);
+  Generate_MathUnaryOperation(&assembler, &CodeStubAssembler::Float64Tan);
 }
 
 // ES6 section 20.2.2.34 Math.tanh ( x )
-void Builtins::Generate_MathTanh(CodeStubAssembler* assembler) {
-  Generate_MathUnaryOperation(assembler, &CodeStubAssembler::Float64Tanh);
+void Builtins::Generate_MathTanh(compiler::CodeAssemblerState* state) {
+  CodeStubAssembler assembler(state);
+  Generate_MathUnaryOperation(&assembler, &CodeStubAssembler::Float64Tanh);
 }
 
 // ES6 section 20.2.2.35 Math.trunc ( x )
-void Builtins::Generate_MathTrunc(CodeStubAssembler* assembler) {
-  Generate_MathRoundingOperation(assembler, &CodeStubAssembler::Float64Trunc);
+void Builtins::Generate_MathTrunc(compiler::CodeAssemblerState* state) {
+  CodeStubAssembler assembler(state);
+  Generate_MathRoundingOperation(&assembler, &CodeStubAssembler::Float64Trunc);
 }
 
 void Builtins::Generate_MathMax(MacroAssembler* masm) {
   Generate_MathMaxMin(masm, MathMaxMinKind::kMax);
 }
 
 void Builtins::Generate_MathMin(MacroAssembler* masm) {
   Generate_MathMaxMin(masm, MathMaxMinKind::kMin);
 }
 
 }  // namespace internal
 }  // namespace v8