[builtins] Introduce proper Float64Atan and Float64Atan2 operators.

src/compiler/arm64/instruction-selector-arm64.cc

Index: src/compiler/arm64/instruction-selector-arm64.cc
diff --git a/src/compiler/arm64/instruction-selector-arm64.cc b/src/compiler/arm64/instruction-selector-arm64.cc
index 70830cd0b3b214f728ef73fdf6035bdea262b068..8a678263b8801145ee8ccca02e9f5c3005b7b862 100644
--- a/src/compiler/arm64/instruction-selector-arm64.cc
+++ b/src/compiler/arm64/instruction-selector-arm64.cc
@@ -1749,6 +1749,14 @@ void InstructionSelector::VisitFloat64Neg(Node* node) {
   VisitRR(this, kArm64Float64Neg, node);
 }
 
+void InstructionSelector::VisitFloat64Ieee754Binop(Node* node,
+                                                   InstructionCode opcode) {
+  Arm64OperandGenerator g(this);
+  Emit(opcode, g.DefineAsFixed(node, d0), g.UseFixed(node->InputAt(0), d0),
+       g.UseFixed(node->InputAt(1), d1))
+      ->MarkAsCall();
+}
+
 void InstructionSelector::VisitFloat64Ieee754Unop(Node* node,
                                                   InstructionCode opcode) {
   Arm64OperandGenerator g(this);