Replace std::vector<> usage in ipa-fnsummary.c with GCC's vec<>.

gcc/ChangeLog:

	* ipa-fnsummary.c (evaluate_conditions_for_known_args): Use vec<>
	instead of std::vector<>.
	(evaluate_properties_for_edge): Same.
	(ipa_fn_summary_t::duplicate): Same.
	(estimate_ipcp_clone_size_and_time): Same.
	* vec.h (<T, A, vl_embed>::embedded_size): Change vec_embedded
	type to contain a char[].

1 files changed, 4 insertions, 1 deletions

diff --git a/gcc/vec.h b/gcc/vec.h
index 3ad99b8..db48e97 100644
--- a/gcc/vec.h
+++ b/gcc/vec.h
@@ -1281,7 +1281,10 @@ template<typename T, typename A>
 inline size_t
 vec<T, A, vl_embed>::embedded_size (unsigned alloc)
 {
-  typedef vec<T, A, vl_embed> vec_embedded;
+  struct alignas (T) U { char data[sizeof (T)]; };
+  typedef vec<U, A, vl_embed> vec_embedded;
+  static_assert (sizeof (vec_embedded) == sizeof(vec), "");
+  static_assert (alignof (vec_embedded) == alignof(vec), "");
   return offsetof (vec_embedded, m_vecdata) + alloc * sizeof (T);
 }