[OpenACC] Update OpenACC macro, remove override macro

As we are now Sema-complete for OpenACC 3.4 (and thus have a conforming
implementation, in all modes), we can now set the _OPENACC macro
correctly.

Additionally, we remove the temporary 'override' functionality, which
was intended to allow people to experiment with this. We aren't having a
deprecation period as OpenACC support is still considered experimental.

2 files changed, 4 insertions, 20 deletions

diff --git a/clang/lib/Frontend/CompilerInvocation.cpp b/clang/lib/Frontend/CompilerInvocation.cpp
index 6ab36d86..3a36250 100644
--- a/clang/lib/Frontend/CompilerInvocation.cpp
+++ b/clang/lib/Frontend/CompilerInvocation.cpp
@@ -3913,12 +3913,8 @@ void CompilerInvocationBase::GenerateLangArgs(const LangOptions &Opts,
   if (Opts.OpenMPCUDAMode)
     GenerateArg(Consumer, OPT_fopenmp_cuda_mode);
 
-  if (Opts.OpenACC) {
+  if (Opts.OpenACC)
     GenerateArg(Consumer, OPT_fopenacc);
-    if (!Opts.OpenACCMacroOverride.empty())
-      GenerateArg(Consumer, OPT_openacc_macro_override,
-                  Opts.OpenACCMacroOverride);
-  }
 
   // The arguments used to set Optimize, OptimizeSize and NoInlineDefine are
   // generated from CodeGenOptions.
@@ -4424,13 +4420,9 @@ bool CompilerInvocation::ParseLangArgs(LangOptions &Opts, ArgList &Args,
                         Args.hasArg(options::OPT_fopenmp_cuda_mode);
 
   // OpenACC Configuration.
-  if (Args.hasArg(options::OPT_fopenacc)) {
+  if (Args.hasArg(options::OPT_fopenacc))
     Opts.OpenACC = true;
 
-    if (Arg *A = Args.getLastArg(options::OPT_openacc_macro_override))
-      Opts.OpenACCMacroOverride = A->getValue();
-  }
-
   if (Arg *A = Args.getLastArg(OPT_ffp_contract)) {
     StringRef Val = A->getValue();
     if (Val == "fast")
diff --git a/clang/lib/Frontend/InitPreprocessor.cpp b/clang/lib/Frontend/InitPreprocessor.cpp
index 38b2e0c..382ccd6 100644
--- a/clang/lib/Frontend/InitPreprocessor.cpp
+++ b/clang/lib/Frontend/InitPreprocessor.cpp
@@ -639,16 +639,8 @@ static void InitializeStandardPredefinedMacros(const TargetInfo &TI,
     }
   }
 
-  if (LangOpts.OpenACC) {
-    // FIXME: When we have full support for OpenACC, we should set this to the
-    // version we support. Until then, set as '1' by default, but provide a
-    // temporary mechanism for users to override this so real-world examples can
-    // be tested against.
-    if (!LangOpts.OpenACCMacroOverride.empty())
-      Builder.defineMacro("_OPENACC", LangOpts.OpenACCMacroOverride);
-    else
-      Builder.defineMacro("_OPENACC", "1");
-  }
+  if (LangOpts.OpenACC)
+    Builder.defineMacro("_OPENACC", "202506");
 }
 
 /// Initialize the predefined C++ language feature test macros defined in