[clang] [SYCL] change sycl version accrodnig to standard (PR #114790)

[via cfe-commits]

https://github.com/dklochkov-emb created https://github.com/llvm/llvm-project/pull/114790

Version of SYCL was changed according to the latest agreement:
The lower 2 digits are not formally specified, but we plan to use these to identify the month in which we submit the specification for ratification, which is similar to the C++ macro __cplusplus.

Since the SYCL 2020 specification was submitted for ratification in December of 2020, the macro's value is now 202012 for SYCL 2020.
see PR for details 
https://github.com/KhronosGroup/SYCL-Docs/pull/634

>From 962fcac610226d5bbd0ed84d7c3dc111d1bafa4f Mon Sep 17 00:00:00 2001
From: "Klochkov, Denis" <denis.klochkov at intel.com>
Date: Mon, 4 Nov 2024 04:58:30 -0800
Subject: [PATCH] [SYCL] change sycl version accrodnig to standard

---
 clang/lib/Frontend/InitPreprocessor.cpp | 2 +-
 clang/test/Preprocessor/sycl-macro.cpp  | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/clang/lib/Frontend/InitPreprocessor.cpp b/clang/lib/Frontend/InitPreprocessor.cpp
index 9a0fdb175ff29e..e9c7dc338380fd 100644
--- a/clang/lib/Frontend/InitPreprocessor.cpp
+++ b/clang/lib/Frontend/InitPreprocessor.cpp
@@ -587,7 +587,7 @@ static void InitializeStandardPredefinedMacros(const TargetInfo &TI,
     if (LangOpts.getSYCLVersion() == LangOptions::SYCL_2017)
       Builder.defineMacro("CL_SYCL_LANGUAGE_VERSION", "121");
     else if (LangOpts.getSYCLVersion() == LangOptions::SYCL_2020)
-      Builder.defineMacro("SYCL_LANGUAGE_VERSION", "202001");
+      Builder.defineMacro("SYCL_LANGUAGE_VERSION", "202012");
   }
 
   // Not "standard" per se, but available even with the -undef flag.
diff --git a/clang/test/Preprocessor/sycl-macro.cpp b/clang/test/Preprocessor/sycl-macro.cpp
index eecddaa09d1c33..a509086f99e413 100644
--- a/clang/test/Preprocessor/sycl-macro.cpp
+++ b/clang/test/Preprocessor/sycl-macro.cpp
@@ -10,5 +10,5 @@
 // CHECK-NOT:#define __SYCL_DEVICE_ONLY__ 1
 // CHECK-NOT:#define CL_SYCL_LANGUAGE_VERSION 121
 // CHECK-SYCL-STD:#define CL_SYCL_LANGUAGE_VERSION 121
-// CHECK-SYCL-STD-2020:#define SYCL_LANGUAGE_VERSION 202001
+// CHECK-SYCL-STD-2020:#define SYCL_LANGUAGE_VERSION 202012
 // CHECK-SYCL:#define __SYCL_DEVICE_ONLY__ 1