[regexp] Move RegExp.prototype[@@search] to TF

src/code-stub-assembler.h

Index: src/code-stub-assembler.h
diff --git a/src/code-stub-assembler.h b/src/code-stub-assembler.h
index 1ed5615c4205604bb05b801db870e6d60c4514cf..b1da873a2899c680f7a90709d13d307d27121683 100644
--- a/src/code-stub-assembler.h
+++ b/src/code-stub-assembler.h
@@ -579,6 +579,8 @@ class V8_EXPORT_PRIVATE CodeStubAssembler : public compiler::CodeAssembler {
                                    int base_allocation_size,
                                    compiler::Node* allocation_site);
 
+  compiler::Node* TryTaggedToFloat64(compiler::Node* value,
+                                     Label* if_valueisnotnumber);
   compiler::Node* TruncateTaggedToFloat64(compiler::Node* context,
                                           compiler::Node* value);
   compiler::Node* TruncateTaggedToWord32(compiler::Node* context,
@@ -1100,6 +1102,14 @@ class V8_EXPORT_PRIVATE CodeStubAssembler : public compiler::CodeAssembler {
   compiler::Node* StrictEqual(ResultMode mode, compiler::Node* lhs,
                               compiler::Node* rhs, compiler::Node* context);
 
+  // ECMA#sec-samevalue
+  // Similar to StrictEqual except that NaNs are treated as equal and minus zero
+  // differs from positive zero.
+  // Unlike Equal and StrictEqual, returns a value suitable for use in Branch
+  // instructions, e.g. Branch(SameValue(...), &label).
+  compiler::Node* SameValue(compiler::Node* lhs, compiler::Node* rhs,
+                            compiler::Node* context);
+
   compiler::Node* HasProperty(
       compiler::Node* object, compiler::Node* key, compiler::Node* context,
       Runtime::FunctionId fallback_runtime_function_id = Runtime::kHasProperty);