[builtins] Introduce new TFC macro and auto-generate TFS descriptors

src/builtins/builtins-regexp-gen.cc

Index: src/builtins/builtins-regexp-gen.cc
diff --git a/src/builtins/builtins-regexp-gen.cc b/src/builtins/builtins-regexp-gen.cc
index 9e5c5cb0fd03d58e0f9308789deb043abc8a7c17..a16e734da5347e36c0397a9b6489ad647c9132f4 100644
--- a/src/builtins/builtins-regexp-gen.cc
+++ b/src/builtins/builtins-regexp-gen.cc
@@ -2170,7 +2170,7 @@ void RegExpBuiltinsAssembler::RegExpPrototypeSplitBody(Node* const context,
 
 // Helper that skips a few initial checks.
 TF_BUILTIN(RegExpSplit, RegExpBuiltinsAssembler) {
-  Node* const regexp = Parameter(Descriptor::kReceiver);
+  Node* const regexp = Parameter(Descriptor::kRegExp);
   Node* const string = Parameter(Descriptor::kString);
   Node* const maybe_limit = Parameter(Descriptor::kLimit);
   Node* const context = Parameter(Descriptor::kContext);
@@ -2550,7 +2550,7 @@ Node* RegExpBuiltinsAssembler::ReplaceSimpleStringFastPath(
 
 // Helper that skips a few initial checks.
 TF_BUILTIN(RegExpReplace, RegExpBuiltinsAssembler) {
-  Node* const regexp = Parameter(Descriptor::kReceiver);
+  Node* const regexp = Parameter(Descriptor::kRegExp);
   Node* const string = Parameter(Descriptor::kString);
   Node* const replace_value = Parameter(Descriptor::kReplaceValue);
   Node* const context = Parameter(Descriptor::kContext);