fix bug; add more test cases

Author: c8ef

clang/lib/AST/ExprConstant.cpp

@@ -13148,6 +13148,7 @@ bool IntExprEvaluator::VisitBuiltinCallExpr(const CallExpr *E,
   case Builtin::BI__builtin_popcountl:
   case Builtin::BI__builtin_popcountll:
   case Builtin::BI__builtin_popcountg:
+  case Builtin::BI__builtin_elementwise_popcount:
   case Builtin::BI__popcnt16: // Microsoft variants of popcount
   case Builtin::BI__popcnt:
   case Builtin::BI__popcnt64: {

clang/test/Sema/constant_builtins_vector.cpp

@@ -802,3 +802,16 @@ static_assert(__builtin_reduce_add(__builtin_elementwise_popcount((vector4int){1
 static_assert(__builtin_reduce_add(__builtin_elementwise_popcount((vector4int){0, 0xF0F0, ~0, ~0xF0F0})) == 16 * sizeof(int));
 static_assert(__builtin_reduce_add(__builtin_elementwise_popcount((vector4long){1L, 2L, 3L, 4L})) == 5L);
 static_assert(__builtin_reduce_add(__builtin_elementwise_popcount((vector4long){0L, 0xF0F0L, ~0L, ~0xF0F0L})) == 16 * sizeof(long long));
+static_assert(__builtin_reduce_add(__builtin_elementwise_popcount((vector4uint){1U, 2U, 3U, 4U})) == 5U);
+static_assert(__builtin_reduce_add(__builtin_elementwise_popcount((vector4uint){0U, 0xF0F0U, ~0U, ~0xF0F0U})) == 16 * sizeof(int));
+static_assert(__builtin_reduce_add(__builtin_elementwise_popcount((vector4ulong){1UL, 2UL, 3UL, 4UL})) == 5L);
+static_assert(__builtin_reduce_add(__builtin_elementwise_popcount((vector4ulong){0UL, 0xF0F0UL, ~0UL, ~0xF0F0UL})) == 16 * sizeof(long long));
+static_assert(__builtin_elementwise_popcount(0) == 0);
+static_assert(__builtin_elementwise_popcount(0xF0F0) == 8);
+static_assert(__builtin_elementwise_popcount(~0) == 8 * sizeof(int));
+static_assert(__builtin_elementwise_popcount(0U) == 0);
+static_assert(__builtin_elementwise_popcount(0xF0F0U) == 8);
+static_assert(__builtin_elementwise_popcount(~0U) == 8 * sizeof(int));
+static_assert(__builtin_elementwise_popcount(0L) == 0);
+static_assert(__builtin_elementwise_popcount(0xF0F0L) == 8);
+static_assert(__builtin_elementwise_popcount(~0LL) == 8 * sizeof(long long));