[clang] [clang] remove unused frontend flag -fretain_subst_template_type_parm_type_ast_nodes (PR #134177)

[Matheus Izvekov via cfe-commits]

https://github.com/mizvekov created https://github.com/llvm/llvm-project/pull/134177

This is a follow-up to #132748, where we deferred the flag removal in order to ease transition for external users.

The plan is to merge this in the nearish future, in two weeks or so is my best guess.

>From 4526115a6afbd5bb78b7ee11b9ff8c9f137fcdab Mon Sep 17 00:00:00 2001
From: Matheus Izvekov <mizvekov at gmail.com>
Date: Wed, 2 Apr 2025 17:47:17 -0300
Subject: [PATCH] [clang] remove unused frontend flag
 -fretain_subst_template_type_parm_type_ast_nodes

This is a folow-up to #132748, where we deferred the flag removal
in order to ease transition for external users.
---
 clang/include/clang/Basic/LangOptions.def | 1 -
 clang/include/clang/Driver/Options.td     | 6 ------
 2 files changed, 7 deletions(-)

diff --git a/clang/include/clang/Basic/LangOptions.def b/clang/include/clang/Basic/LangOptions.def
index 3879cc7942877..930c1c06d1a76 100644
--- a/clang/include/clang/Basic/LangOptions.def
+++ b/clang/include/clang/Basic/LangOptions.def
@@ -161,7 +161,6 @@ LANGOPT(Coroutines        , 1, 0, "C++20 coroutines")
 LANGOPT(CoroAlignedAllocation, 1, 0, "prefer Aligned Allocation according to P2014 Option 2")
 LANGOPT(DllExportInlines  , 1, 1, "dllexported classes dllexport inline methods")
 LANGOPT(ExperimentalLibrary, 1, 0, "enable unstable and experimental library features")
-LANGOPT(RetainSubstTemplateTypeParmTypeAstNodes, 1, 0, "retain SubstTemplateTypeParmType nodes in the AST's representation of alias template specializations")
 
 LANGOPT(PointerAuthIntrinsics, 1, 0, "pointer authentication intrinsics")
 LANGOPT(PointerAuthCalls  , 1, 0, "function pointer authentication")
diff --git a/clang/include/clang/Driver/Options.td b/clang/include/clang/Driver/Options.td
index e69b804de63b5..f8b59d5c6e4aa 100644
--- a/clang/include/clang/Driver/Options.td
+++ b/clang/include/clang/Driver/Options.td
@@ -3508,12 +3508,6 @@ defm application_extension : BoolFOption<"application-extension",
   PosFlag<SetTrue, [], [ClangOption, CC1Option],
           "Restrict code to those available for App Extensions">,
   NegFlag<SetFalse>>;
-defm retain_subst_template_type_parm_type_ast_nodes : BoolFOption<"retain-subst-template-type-parm-type-ast-nodes",
-  LangOpts<"RetainSubstTemplateTypeParmTypeAstNodes">, DefaultFalse,
-  PosFlag<SetTrue, [], [CC1Option], "Enable">,
-  NegFlag<SetFalse, [], [], "Disable">,
-  BothFlags<[], [], " retain SubstTemplateTypeParmType nodes in the AST's representation"
-  " of alias template specializations">>;
 defm sized_deallocation : BoolFOption<"sized-deallocation",
   LangOpts<"SizedDeallocation">, Default<cpp14.KeyPath>,
   PosFlag<SetTrue, [], [], "Enable C++14 sized global deallocation functions">,