[Clang][Sema] Fix invalid cast when validating SVE types within CheckVariableDeclarationType.

Fixes llvm#62087

Differential Revision: https://reviews.llvm.org/D148919

(cherry picked from commit 2bb7e00)

Author: paulwalker-arm

clang/lib/Sema/SemaDecl.cpp

@@ -8693,7 +8693,7 @@ void Sema::CheckVariableDeclarationType(VarDecl *NewVD) {
   }
 
   // Check that SVE types are only used in functions with SVE available.
-  if (T->isSVESizelessBuiltinType() && CurContext->isFunctionOrMethod()) {
+  if (T->isSVESizelessBuiltinType() && isa<FunctionDecl>(CurContext)) {
     const FunctionDecl *FD = cast<FunctionDecl>(CurContext);
     llvm::StringMap<bool> CallerFeatureMap;
     Context.getFunctionFeatureMap(CallerFeatureMap, FD);

clang/test/SemaOpenMP/arm-sve-acle-types.cpp

@@ -0,0 +1,11 @@
+// RUN: %clang_cc1 -fopenmp -fsyntax-only -triple aarch64-arm-none-eabi -target-feature +sve -verify %s
+// expected-no-diagnostics
+
+__SVBool_t foo(int);
+
+void test() {
+#pragma omp parallel
+  {
+    __SVBool_t pg = foo(1);
+  }
+}