[C23] Rename C2x -> C23; NFC

This does the rename for most internal uses of C2x, but does not rename
or reword diagnostics (those will be done in a follow-up).

I also updated standards references and citations to the final wording
in the standard.

1 files changed, 3 insertions, 3 deletions

diff --git a/clang/lib/Basic/LangOptions.cpp b/clang/lib/Basic/LangOptions.cpp
index b44c71f..a0adfbf 100644
--- a/clang/lib/Basic/LangOptions.cpp
+++ b/clang/lib/Basic/LangOptions.cpp
@@ -111,7 +111,7 @@ void LangOptions::setLangDefaults(LangOptions &Opts, Language Lang,
   Opts.C99 = Std.isC99();
   Opts.C11 = Std.isC11();
   Opts.C17 = Std.isC17();
-  Opts.C2x = Std.isC2x();
+  Opts.C23 = Std.isC23();
   Opts.CPlusPlus = Std.isCPlusPlus();
   Opts.CPlusPlus11 = Std.isCPlusPlus11();
   Opts.CPlusPlus14 = Std.isCPlusPlus14();
@@ -201,8 +201,8 @@ void LangOptions::setLangDefaults(LangOptions &Opts, Language Lang,
 
   Opts.RenderScript = Lang == Language::RenderScript;
 
-  // OpenCL, C++ and C2x have bool, true, false keywords.
-  Opts.Bool = Opts.OpenCL || Opts.CPlusPlus || Opts.C2x;
+  // OpenCL, C++ and C23 have bool, true, false keywords.
+  Opts.Bool = Opts.OpenCL || Opts.CPlusPlus || Opts.C23;
 
   // OpenCL and HLSL have half keyword
   Opts.Half = Opts.OpenCL || Opts.HLSL;