Revert "GH58368: Correct concept checking in a lambda defined in concept"

This reverts commit b7c922607c5ba93db8b893d4ba461052af8317b5.

This seems to cause some problems with some modules related things,
which makes me think I should have updated the version-major in
ast-bit-codes?  Going to revert to confirm this was a problem, then
change that and re-try a commit.

1 files changed, 1 insertions, 9 deletions

diff --git a/clang/lib/Sema/SemaLambda.cpp b/clang/lib/Sema/SemaLambda.cpp
index a22708d..2143b81 100644
--- a/clang/lib/Sema/SemaLambda.cpp
+++ b/clang/lib/Sema/SemaLambda.cpp
@@ -282,8 +282,7 @@ Sema::getCurrentMangleNumberContext(const DeclContext *DC) {
     DataMember,
     StaticDataMember,
     InlineVariable,
-    VariableTemplate,
-    Concept
+    VariableTemplate
   } Kind = Normal;
 
   // Default arguments of member function parameters that appear in a class
@@ -308,8 +307,6 @@ Sema::getCurrentMangleNumberContext(const DeclContext *DC) {
       }
     } else if (isa<FieldDecl>(ManglingContextDecl)) {
       Kind = DataMember;
-    } else if (isa<ImplicitConceptSpecializationDecl>(ManglingContextDecl)) {
-      Kind = Concept;
     }
   }
 
@@ -333,11 +330,6 @@ Sema::getCurrentMangleNumberContext(const DeclContext *DC) {
     return std::make_tuple(nullptr, nullptr);
   }
 
-  case Concept:
-    // Concept definitions aren't code generated and thus aren't mangled,
-    // however the ManglingContextDecl is important for the purposes of
-    // re-forming the template argument list of the lambda for constraint
-    // evaluation.
   case StaticDataMember:
     //  -- the initializers of nonspecialized static members of template classes
     if (!IsInNonspecializedTemplate)