[AArch64][SME] Add diagnostics for SME attributes on lambda functions (#121777)

CheckFunctionDeclaration emits diagnostics if any SME attributes are used
by a function definition without the required +sme or +sme2 target features.
This patch moves these diagnostics to a new function in SemaARM and
also adds a call to this from ActOnStartOfLambdaDefinition.

1 files changed, 4 insertions, 0 deletions

diff --git a/clang/lib/Sema/SemaLambda.cpp b/clang/lib/Sema/SemaLambda.cpp
index f2c3a81..0c5467c 100644
--- a/clang/lib/Sema/SemaLambda.cpp
+++ b/clang/lib/Sema/SemaLambda.cpp
@@ -21,6 +21,7 @@
 #include "clang/Sema/Lookup.h"
 #include "clang/Sema/Scope.h"
 #include "clang/Sema/ScopeInfo.h"
+#include "clang/Sema/SemaARM.h"
 #include "clang/Sema/SemaCUDA.h"
 #include "clang/Sema/SemaInternal.h"
 #include "clang/Sema/SemaOpenMP.h"
@@ -1455,6 +1456,9 @@ void Sema::ActOnStartOfLambdaDefinition(LambdaIntroducer &Intro,
   // Attributes on the lambda apply to the method.
   ProcessDeclAttributes(CurScope, Method, ParamInfo);
 
+  if (Context.getTargetInfo().getTriple().isAArch64())
+    ARM().CheckSMEFunctionDefAttributes(Method);
+
   // CUDA lambdas get implicit host and device attributes.
   if (getLangOpts().CUDA)
     CUDA().SetLambdaAttrs(Method);