[CSA][cleanup] TNodify builtins regexp gen

Bug: v8:6949, v8:9396
Change-Id: I035a00f61077e49377c9cd39ae1b216a80c98e6b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1803615Reviewed-by: Dan Elphick <delphick@chromium.org>
Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63848}

src/builtins/builtins-regexp-gen.h

@@ -139,17 +139,17 @@ class RegExpBuiltinsAssembler : public CodeStubAssembler {
 
   // Performs fast path checks on the given object itself, but omits prototype
   // checks.
-  Node* IsFastRegExpNoPrototype(SloppyTNode<Context> context,
-                                SloppyTNode<Object> object);
-  Node* IsFastRegExpNoPrototype(SloppyTNode<Context> context,
-                                SloppyTNode<Object> object,
-                                SloppyTNode<Map> map);
+  TNode<BoolT> IsFastRegExpNoPrototype(TNode<Context> context,
+                                       TNode<Object> object);
+  TNode<BoolT> IsFastRegExpNoPrototype(TNode<Context> context,
+                                       TNode<Object> object, TNode<Map> map);
 
   // For debugging only. Uses a slow GetProperty call to fetch object.exec.
   TNode<BoolT> IsFastRegExpWithOriginalExec(TNode<Context> context,
                                             TNode<JSRegExp> object);
 
-  void BranchIfFastRegExpResult(Node* const context, Node* const object,
+  void BranchIfFastRegExpResult(const TNode<Context> context,
+                                const TNode<Object> object,
                                 Label* if_isunmodified, Label* if_ismodified);
 
   TNode<String> FlagsGetter(TNode<Context> context, TNode<Object> regexp,
@@ -167,10 +167,14 @@ class RegExpBuiltinsAssembler : public CodeStubAssembler {
   TNode<BoolT> FlagGetter(TNode<Context> context, TNode<Object> regexp,
                           JSRegExp::Flag flag, bool is_fastpath);
 
-  Node* RegExpInitialize(Node* const context, Node* const regexp,
-                         Node* const maybe_pattern, Node* const maybe_flags);
+  TNode<Object> RegExpInitialize(const TNode<Context> context,
+                                 const TNode<JSRegExp> regexp,
+                                 const TNode<Object> maybe_pattern,
+                                 const TNode<Object> maybe_flags);
 
-  TNode<Object> RegExpExec(TNode<Context> context, Node* regexp, Node* string);
+  TNode<Object> RegExpExec(TNode<Context> context,
+                           TNode<JSReceiver> maybe_regexp,
+                           TNode<String> string);
 
   TNode<Number> AdvanceStringIndex(SloppyTNode<String> string,
                                    SloppyTNode<Number> index,

src/builtins/regexp.tq

@@ -22,7 +22,7 @@ namespace regexp {
     BranchIfFastRegExp_Permissive(o) otherwise return true, return false;
   }
 
-  extern macro RegExpBuiltinsAssembler::RegExpExec(Context, JSAny, JSAny):
+  extern macro RegExpBuiltinsAssembler::RegExpExec(Context, JSReceiver, String):
       JSAny;
 
   extern macro