diff --git a/clang/lib/Sema/SemaChecking.cpp b/clang/lib/Sema/SemaChecking.cpp
--- a/clang/lib/Sema/SemaChecking.cpp
+++ b/clang/lib/Sema/SemaChecking.cpp
@@ -7303,7 +7303,8 @@
 
     if ((ExpectedType->isVoidPointerType() && !ArgType->isPointerType()) ||
         (!ExpectedType->isVoidPointerType() &&
-           ArgType.getCanonicalType() != ExpectedType))
+         (!ArgType.isRestrictQualified() &&
+          ArgType.getCanonicalType() != ExpectedType)))
       return Diag(Arg->getBeginLoc(), diag::err_typecheck_convert_incompatible)
              << ArgType << ExpectedType << 1 << 0 << 0;
 
diff --git a/clang/test/Sema/ppc-pair-mma-types.c b/clang/test/Sema/ppc-pair-mma-types.c
--- a/clang/test/Sema/ppc-pair-mma-types.c
+++ b/clang/test/Sema/ppc-pair-mma-types.c
@@ -333,3 +333,8 @@
   __vector_pair vp = __builtin_vsx_lxvp(ll, v); // expected-error {{passing '__vector int' (vector of 4 'int' values) to parameter of incompatible type 'const __vector_pair *'}}
   __builtin_vsx_stxvp(vp, ll, s);               // expected-error {{passing 'unsigned short' to parameter of incompatible type 'const __vector_pair *'}}
 }
+
+void testRestrictQualifiedPointer(__vector_quad *__restrict acc) {
+  vector float arr[4];
+  __builtin_mma_disassemble_acc((void*)arr, acc);
+}