c: Add __builtin_stdc_* builtins

As discussed in the
https://sourceware.org/pipermail/libc-alpha/2023-November/152756.html
thread, including e.g.
https://sourceware.org/pipermail/libc-alpha/2023-November/152795.html
patch, while one can use the new __builtin_{clz,ctz,popcount}g builtins
to implement the stdbit.h type-generic macros, there are certain problems
with that implementation if those macros must be usable outside of
function bodies (e.g. int a = sizeof (stdc_bit_floor (0ULL));), must not
evaluate their arguments multiple times and especially for deep stdc_*
macro nesting don't expand the argument more than once.  Plus ideally are
usable in constant expressions for all the types if they have constant
arguments.  The above second URL satisfies it all but the last two (the
last one satisfies for many of them).  While we could get away with just
adding __biultin_stdc_bit_{ceil,floor,width} which are complicated and
2 further extensions (some way to say that __builtin_c{l,t}zg should
imply bit precision of the first argument for the second argument without
using __builtin_popcountg ((__typeof (x)) -1) in there because that
causes another expansion of the macro argument and say __builtin_bit_complement
type-generic builtin which would be like (__typeof (x)) ~(x)), it was decided
we want to implement builtins for all the stdc type-generic macros.
As we are close to running out of 8-bit enum rid (when adding the 14 new
RID_* we have 7 too many), this patch implements those 14 keywords using
a single RID_BUILTIN_STDC and simply in the rare case this is being
parsed check values of 1-2 characters from the builtin names to see which
one it is.

2023-11-23  Jakub Jelinek  <jakub@redhat.com>

gcc/
	* doc/extend.texi (__builtin_stdc_bit_ceil, __builtin_stdc_bit_floor,
	__builtin_stdc_bit_width, __builtin_stdc_count_ones,
	__builtin_stdc_count_zeros, __builtin_stdc_first_leading_one,
	__builtin_stdc_first_leading_zero, __builtin_stdc_first_trailing_one,
	__builtin_stdc_first_trailing_zero, __builtin_stdc_has_single_bit,
	__builtin_stdc_leading_ones, __builtin_stdc_leading_zeros,
	__builtin_stdc_trailing_ones, __builtin_stdc_trailing_zeros): Document.
gcc/c-family/
	* c-common.h (enum rid): Add RID_BUILTIN_STDC: New.
	* c-common.cc (c_common_reswords): Add __builtin_stdc_bit_ceil,
	__builtin_stdc_bit_floor, __builtin_stdc_bit_width,
	__builtin_stdc_count_ones, __builtin_stdc_count_zeros,
	__builtin_stdc_first_leading_one, __builtin_stdc_first_leading_zero,
	__builtin_stdc_first_trailing_one, __builtin_stdc_first_trailing_zero,
	__builtin_stdc_has_single_bit, __builtin_stdc_leading_ones,
	__builtin_stdc_leading_zeros, __builtin_stdc_trailing_ones and
	__builtin_stdc_trailing_zeros.  Move __builtin_assoc_barrier
	alphabetically earlier.
gcc/c/
	* c-parser.cc (c_parser_postfix_expression): Handle RID_BUILTIN_STDC.
	* c-decl.cc (names_builtin_p): Likewise.
gcc/testsuite/
	* gcc.dg/builtin-stdc-bit-1.c: New test.
	* gcc.dg/builtin-stdc-bit-2.c: New test.

7 files changed, 1508 insertions, 6 deletions

diff --git a/gcc/c-family/c-common.cc b/gcc/c-family/c-common.cc
index 0ea0c4f..fc898b4 100644
--- a/gcc/c-family/c-common.cc
+++ b/gcc/c-family/c-common.cc
@@ -380,6 +380,7 @@ const struct c_common_resword c_common_reswords[] =
   { "__attribute__",	RID_ATTRIBUTE,	0 },
   { "__auto_type",	RID_AUTO_TYPE,	D_CONLY },
   { "__builtin_addressof", RID_ADDRESSOF, D_CXXONLY },
+  { "__builtin_assoc_barrier", RID_BUILTIN_ASSOC_BARRIER, 0 },
   { "__builtin_bit_cast", RID_BUILTIN_BIT_CAST, D_CXXONLY },
   { "__builtin_call_with_static_chain",
     RID_BUILTIN_CALL_WITH_STATIC_CHAIN, D_CONLY },
@@ -388,9 +389,22 @@ const struct c_common_resword c_common_reswords[] =
   { "__builtin_convertvector", RID_BUILTIN_CONVERTVECTOR, 0 },
   { "__builtin_has_attribute", RID_BUILTIN_HAS_ATTRIBUTE, 0 },
   { "__builtin_launder", RID_BUILTIN_LAUNDER, D_CXXONLY },
-  { "__builtin_assoc_barrier", RID_BUILTIN_ASSOC_BARRIER, 0 },
   { "__builtin_shuffle", RID_BUILTIN_SHUFFLE, 0 },
   { "__builtin_shufflevector", RID_BUILTIN_SHUFFLEVECTOR, 0 },
+  { "__builtin_stdc_bit_ceil", RID_BUILTIN_STDC, D_CONLY },
+  { "__builtin_stdc_bit_floor", RID_BUILTIN_STDC, D_CONLY },
+  { "__builtin_stdc_bit_width", RID_BUILTIN_STDC, D_CONLY },
+  { "__builtin_stdc_count_ones", RID_BUILTIN_STDC, D_CONLY },
+  { "__builtin_stdc_count_zeros", RID_BUILTIN_STDC, D_CONLY },
+  { "__builtin_stdc_first_leading_one", RID_BUILTIN_STDC, D_CONLY },
+  { "__builtin_stdc_first_leading_zero", RID_BUILTIN_STDC, D_CONLY },
+  { "__builtin_stdc_first_trailing_one", RID_BUILTIN_STDC, D_CONLY },
+  { "__builtin_stdc_first_trailing_zero", RID_BUILTIN_STDC, D_CONLY },
+  { "__builtin_stdc_has_single_bit", RID_BUILTIN_STDC, D_CONLY },
+  { "__builtin_stdc_leading_ones", RID_BUILTIN_STDC, D_CONLY },
+  { "__builtin_stdc_leading_zeros", RID_BUILTIN_STDC, D_CONLY },
+  { "__builtin_stdc_trailing_ones", RID_BUILTIN_STDC, D_CONLY },
+  { "__builtin_stdc_trailing_zeros", RID_BUILTIN_STDC, D_CONLY },
   { "__builtin_tgmath", RID_BUILTIN_TGMATH, D_CONLY },
   { "__builtin_offsetof", RID_OFFSETOF, 0 },
   { "__builtin_types_compatible_p", RID_TYPES_COMPATIBLE_P, D_CONLY },
diff --git a/gcc/c-family/c-common.h b/gcc/c-family/c-common.h
index b57e83d..53ca67f 100644
--- a/gcc/c-family/c-common.h
+++ b/gcc/c-family/c-common.h
@@ -106,10 +106,10 @@ enum rid
   /* C extensions */
   RID_ASM,       RID_TYPEOF,   RID_TYPEOF_UNQUAL, RID_ALIGNOF,  RID_ATTRIBUTE,
   RID_VA_ARG,
-  RID_EXTENSION, RID_IMAGPART, RID_REALPART, RID_LABEL,      RID_CHOOSE_EXPR,
-  RID_TYPES_COMPATIBLE_P,      RID_BUILTIN_COMPLEX,	     RID_BUILTIN_SHUFFLE,
-  RID_BUILTIN_SHUFFLEVECTOR,   RID_BUILTIN_CONVERTVECTOR,   RID_BUILTIN_TGMATH,
-  RID_BUILTIN_HAS_ATTRIBUTE,   RID_BUILTIN_ASSOC_BARRIER,
+  RID_EXTENSION, RID_IMAGPART, RID_REALPART, RID_LABEL,    RID_CHOOSE_EXPR,
+  RID_TYPES_COMPATIBLE_P,      RID_BUILTIN_COMPLEX,	   RID_BUILTIN_SHUFFLE,
+  RID_BUILTIN_SHUFFLEVECTOR,   RID_BUILTIN_CONVERTVECTOR,  RID_BUILTIN_TGMATH,
+  RID_BUILTIN_HAS_ATTRIBUTE,   RID_BUILTIN_ASSOC_BARRIER,  RID_BUILTIN_STDC,
   RID_DFLOAT32, RID_DFLOAT64, RID_DFLOAT128,
 
   /* TS 18661-3 keywords, in the same sequence as the TI_* values.  */
diff --git a/gcc/c/c-decl.cc b/gcc/c/c-decl.cc
index 64d3a94..439a312 100644
--- a/gcc/c/c-decl.cc
+++ b/gcc/c/c-decl.cc
@@ -11370,11 +11370,12 @@ names_builtin_p (const char *name)
      functions.  */
   switch (C_RID_CODE (id))
     {
+    case RID_BUILTIN_ASSOC_BARRIER:
     case RID_BUILTIN_CONVERTVECTOR:
     case RID_BUILTIN_HAS_ATTRIBUTE:
     case RID_BUILTIN_SHUFFLE:
     case RID_BUILTIN_SHUFFLEVECTOR:
-    case RID_BUILTIN_ASSOC_BARRIER:
+    case RID_BUILTIN_STDC:
     case RID_CHOOSE_EXPR:
     case RID_OFFSETOF:
     case RID_TYPES_COMPATIBLE_P:
diff --git a/gcc/c/c-parser.cc b/gcc/c/c-parser.cc
index 703f957..371dd29 100644
--- a/gcc/c/c-parser.cc
+++ b/gcc/c/c-parser.cc
@@ -11743,6 +11743,297 @@ c_parser_postfix_expression (c_parser *parser)
 	    set_c_expr_source_range (&expr, start_loc, end_loc);
 	  }
 	  break;
+	case RID_BUILTIN_STDC:
+	  {
+	    vec<c_expr_t, va_gc> *cexpr_list;
+	    c_expr_t *arg_p;
+	    location_t close_paren_loc;
+	    enum c_builtin_stdc {
+	      C_BUILTIN_STDC_BIT_CEIL,
+	      C_BUILTIN_STDC_BIT_FLOOR,
+	      C_BUILTIN_STDC_BIT_WIDTH,
+	      C_BUILTIN_STDC_COUNT_ONES,
+	      C_BUILTIN_STDC_COUNT_ZEROS,
+	      C_BUILTIN_STDC_FIRST_LEADING_ONE,
+	      C_BUILTIN_STDC_FIRST_LEADING_ZERO,
+	      C_BUILTIN_STDC_FIRST_TRAILING_ONE,
+	      C_BUILTIN_STDC_FIRST_TRAILING_ZERO,
+	      C_BUILTIN_STDC_HAS_SINGLE_BIT,
+	      C_BUILTIN_STDC_LEADING_ONES,
+	      C_BUILTIN_STDC_LEADING_ZEROS,
+	      C_BUILTIN_STDC_TRAILING_ONES,
+	      C_BUILTIN_STDC_TRAILING_ZEROS,
+	      C_BUILTIN_STDC_MAX
+	    } stdc_rid = C_BUILTIN_STDC_MAX;
+	    const char *name
+	      = IDENTIFIER_POINTER (c_parser_peek_token (parser)->value);
+	    switch (name[sizeof ("__builtin_stdc_") - 1])
+	      {
+	      case 'b':
+		switch (name[sizeof ("__builtin_stdc_bit_") - 1])
+		  {
+		  case 'c':
+		    stdc_rid = C_BUILTIN_STDC_BIT_CEIL;
+		    break;
+		  case 'f':
+		    stdc_rid = C_BUILTIN_STDC_BIT_FLOOR;
+		    break;
+		  default:
+		    stdc_rid = C_BUILTIN_STDC_BIT_WIDTH;
+		    break;
+		  }
+		break;
+	      case 'c':
+		if (name[sizeof ("__builtin_stdc_count_") - 1] == 'o')
+		  stdc_rid = C_BUILTIN_STDC_COUNT_ONES;
+		else
+		  stdc_rid = C_BUILTIN_STDC_COUNT_ZEROS;
+		break;
+	      case 'f':
+		switch (name[sizeof ("__builtin_stdc_first_trailing_") - 1])
+		  {
+		  case 'n':
+		    stdc_rid = C_BUILTIN_STDC_FIRST_LEADING_ONE;
+		    break;
+		  case 'e':
+		    stdc_rid = C_BUILTIN_STDC_FIRST_LEADING_ZERO;
+		    break;
+		  case 'o':
+		    stdc_rid = C_BUILTIN_STDC_FIRST_TRAILING_ONE;
+		    break;
+		  default:
+		    stdc_rid = C_BUILTIN_STDC_FIRST_TRAILING_ZERO;
+		    break;
+		  }
+		break;
+	      case 'h':
+		stdc_rid = C_BUILTIN_STDC_HAS_SINGLE_BIT;
+		break;
+	      case 'l':
+		if (name[sizeof ("__builtin_stdc_leading_") - 1] == 'o')
+		  stdc_rid = C_BUILTIN_STDC_LEADING_ONES;
+		else
+		  stdc_rid = C_BUILTIN_STDC_LEADING_ZEROS;
+		break;
+	      case 't':
+		if (name[sizeof ("__builtin_stdc_trailing_") - 1] == 'o')
+		  stdc_rid = C_BUILTIN_STDC_TRAILING_ONES;
+		else
+		  stdc_rid = C_BUILTIN_STDC_TRAILING_ZEROS;
+		break;
+	      }
+	    gcc_checking_assert (stdc_rid != C_BUILTIN_STDC_MAX);
+
+	    c_parser_consume_token (parser);
+	    if (!c_parser_get_builtin_args (parser, name,
+					    &cexpr_list, false,
+					    &close_paren_loc))
+	      {
+		expr.set_error ();
+		break;
+	      }
+
+	    if (vec_safe_length (cexpr_list) != 1)
+	      {
+		error_at (loc, "wrong number of arguments to %qs", name);
+		expr.set_error ();
+		break;
+	      }
+
+	    arg_p = &(*cexpr_list)[0];
+	    *arg_p = convert_lvalue_to_rvalue (loc, *arg_p, true, true);
+	    if (!INTEGRAL_TYPE_P (TREE_TYPE (arg_p->value)))
+	      {
+		error_at (loc, "%qs operand not an integral type", name);
+		expr.set_error ();
+		break;
+	      }
+	    tree arg = arg_p->value;
+	    tree type = TYPE_MAIN_VARIANT (TREE_TYPE (arg));
+	    /* Expand:
+	       __builtin_stdc_leading_zeros (arg) as
+		 (unsigned int) __builtin_clzg (arg, prec)
+	       __builtin_stdc_leading_ones (arg) as
+		 (unsigned int) __builtin_clzg ((type) ~arg, prec)
+	       __builtin_stdc_trailing_zeros (arg) as
+		 (unsigned int) __builtin_ctzg (arg, prec)
+	       __builtin_stdc_trailing_ones (arg) as
+		 (unsigned int) __builtin_ctzg ((type) ~arg, prec)
+	       __builtin_stdc_first_leading_zero (arg) as
+		 __builtin_clzg ((type) ~arg, -1) + 1U
+	       __builtin_stdc_first_leading_one (arg) as
+		 __builtin_clzg (arg, -1) + 1U
+	       __builtin_stdc_first_trailing_zero (arg) as
+		 __builtin_ctzg ((type) ~arg, -1) + 1U
+	       __builtin_stdc_first_trailing_one (arg) as
+		 __builtin_ctzg (arg, -1) + 1U
+	       __builtin_stdc_count_zeros (arg) as
+		 (unsigned int) __builtin_popcountg ((type) ~arg)
+	       __builtin_stdc_count_ones (arg) as
+		 (unsigned int) __builtin_popcountg (arg)
+	       __builtin_stdc_has_single_bit (arg) as
+		 (_Bool) (__builtin_popcountg (arg) == 1)
+	       __builtin_stdc_bit_width (arg) as
+		 (unsigned int) (prec - __builtin_clzg (arg, prec))
+	       __builtin_stdc_bit_floor (arg) as
+		 arg == 0 ? (type) 0
+			  : (type) 1 << (prec - 1 - __builtin_clzg (arg))
+	       __builtin_stdc_bit_ceil (arg) as
+		 arg <= 1 ? (type) 1
+			  : (type) 2 << (prec - 1 - __builtin_clzg (arg - 1))
+	       without evaluating arg multiple times, type being
+	       __typeof (arg) and prec __builtin_popcountg ((type) ~0)).  */
+	    int prec = TYPE_PRECISION (type);
+	    tree barg1 = arg;
+	    switch (stdc_rid)
+	      {
+	      case C_BUILTIN_STDC_BIT_CEIL:
+		arg = save_expr (arg);
+		barg1 = build2_loc (loc, PLUS_EXPR, type, arg,
+				    build_int_cst (type, -1));
+		break;
+	      case C_BUILTIN_STDC_BIT_FLOOR:
+		barg1 = arg = save_expr (arg);
+		break;
+	      case C_BUILTIN_STDC_COUNT_ZEROS:
+	      case C_BUILTIN_STDC_FIRST_LEADING_ZERO:
+	      case C_BUILTIN_STDC_FIRST_TRAILING_ZERO:
+	      case C_BUILTIN_STDC_LEADING_ONES:
+	      case C_BUILTIN_STDC_TRAILING_ONES:
+		barg1 = build1_loc (loc, BIT_NOT_EXPR, type, arg);
+		break;
+	      default:
+		break;
+	      }
+	    tree barg2 = NULL_TREE;
+	    switch (stdc_rid)
+	      {
+	      case C_BUILTIN_STDC_BIT_WIDTH:
+	      case C_BUILTIN_STDC_LEADING_ONES:
+	      case C_BUILTIN_STDC_LEADING_ZEROS:
+	      case C_BUILTIN_STDC_TRAILING_ONES:
+	      case C_BUILTIN_STDC_TRAILING_ZEROS:
+		barg2 = build_int_cst (integer_type_node, prec);
+		break;
+	      case C_BUILTIN_STDC_FIRST_LEADING_ONE:
+	      case C_BUILTIN_STDC_FIRST_LEADING_ZERO:
+	      case C_BUILTIN_STDC_FIRST_TRAILING_ONE:
+	      case C_BUILTIN_STDC_FIRST_TRAILING_ZERO:
+		barg2 = integer_minus_one_node;
+		break;
+	      default:
+		break;
+	      }
+	    tree fndecl = NULL_TREE;
+	    switch (stdc_rid)
+	      {
+	      case C_BUILTIN_STDC_BIT_CEIL:
+	      case C_BUILTIN_STDC_BIT_FLOOR:
+	      case C_BUILTIN_STDC_BIT_WIDTH:
+	      case C_BUILTIN_STDC_FIRST_LEADING_ONE:
+	      case C_BUILTIN_STDC_FIRST_LEADING_ZERO:
+	      case C_BUILTIN_STDC_LEADING_ONES:
+	      case C_BUILTIN_STDC_LEADING_ZEROS:
+		fndecl = builtin_decl_explicit (BUILT_IN_CLZG);
+		break;
+	      case C_BUILTIN_STDC_FIRST_TRAILING_ONE:
+	      case C_BUILTIN_STDC_FIRST_TRAILING_ZERO:
+	      case C_BUILTIN_STDC_TRAILING_ONES:
+	      case C_BUILTIN_STDC_TRAILING_ZEROS:
+		fndecl = builtin_decl_explicit (BUILT_IN_CTZG);
+		break;
+	      case C_BUILTIN_STDC_COUNT_ONES:
+	      case C_BUILTIN_STDC_COUNT_ZEROS:
+	      case C_BUILTIN_STDC_HAS_SINGLE_BIT:
+		fndecl = builtin_decl_explicit (BUILT_IN_POPCOUNTG);
+		break;
+	      default:
+		gcc_unreachable ();
+	      }
+	    /* Construct a call to __builtin_{clz,ctz,popcount}g.  */
+	    int nargs = barg2 != NULL_TREE ? 2 : 1;
+	    vec<tree, va_gc> *args;
+	    vec_alloc (args, nargs);
+	    vec<tree, va_gc> *origtypes;
+	    vec_alloc (origtypes, nargs);
+	    auto_vec<location_t> arg_loc (nargs);
+	    args->quick_push (barg1);
+	    arg_loc.quick_push (arg_p->get_location ());
+	    origtypes->quick_push (arg_p->original_type);
+	    if (nargs == 2)
+	      {
+		args->quick_push (barg2);
+		arg_loc.quick_push (loc);
+		origtypes->quick_push (integer_type_node);
+	      }
+	    expr.value = c_build_function_call_vec (loc, arg_loc, fndecl,
+						    args, origtypes);
+	    set_c_expr_source_range (&expr, loc, close_paren_loc);
+	    if (expr.value == error_mark_node)
+	      break;
+	    switch (stdc_rid)
+	      {
+	      case C_BUILTIN_STDC_BIT_CEIL:
+	      case C_BUILTIN_STDC_BIT_FLOOR:
+		--prec;
+		/* FALLTHRU */
+	      case C_BUILTIN_STDC_BIT_WIDTH:
+		expr.value = build2_loc (loc, MINUS_EXPR, integer_type_node,
+					 build_int_cst (integer_type_node,
+							prec), expr.value);
+		break;
+	      case C_BUILTIN_STDC_FIRST_LEADING_ONE:
+	      case C_BUILTIN_STDC_FIRST_LEADING_ZERO:
+	      case C_BUILTIN_STDC_FIRST_TRAILING_ONE:
+	      case C_BUILTIN_STDC_FIRST_TRAILING_ZERO:
+		expr.value = build2_loc (loc, PLUS_EXPR, integer_type_node,
+					 expr.value, integer_one_node);
+		break;
+	      case C_BUILTIN_STDC_HAS_SINGLE_BIT:
+		expr.value = build2_loc (loc, EQ_EXPR, boolean_type_node,
+					 expr.value, integer_one_node);
+		break;
+	      default:
+		break;
+	      }
+
+	    if (stdc_rid != C_BUILTIN_STDC_BIT_CEIL
+		&& stdc_rid != C_BUILTIN_STDC_BIT_FLOOR)
+	      {
+		if (stdc_rid != C_BUILTIN_STDC_HAS_SINGLE_BIT)
+		  expr.value = fold_convert_loc (loc, unsigned_type_node,
+						 expr.value);
+		break;
+	      }
+	    /* For __builtin_stdc_bit_ceil (0U) or __builtin_stdc_bit_ceil (1U)
+	       or __builtin_stdc_bit_floor (0U) avoid bogus -Wshift-count-*
+	       warnings.  The LSHIFT_EXPR is in dead code in that case.  */
+	    if (integer_zerop (arg)
+		|| (stdc_rid == C_BUILTIN_STDC_BIT_CEIL && integer_onep (arg)))
+	      expr.value = build_int_cst (type, 0);
+	    else
+	      expr.value
+		= build2_loc (loc, LSHIFT_EXPR, type,
+			      build_int_cst (type,
+					     (stdc_rid
+					      == C_BUILTIN_STDC_BIT_CEIL
+					      ? 2 : 1)), expr.value);
+	    if (stdc_rid == C_BUILTIN_STDC_BIT_CEIL)
+	      expr.value = build3_loc (loc, COND_EXPR, type,
+				       build2_loc (loc, LE_EXPR,
+						   boolean_type_node, arg,
+						   build_int_cst (type, 1)),
+				       build_int_cst (type, 1),
+				       expr.value);
+	    else
+	      expr.value = build3_loc (loc, COND_EXPR, type,
+				       build2_loc (loc, EQ_EXPR,
+						   boolean_type_node, arg,
+						   build_int_cst (type, 0)),
+				       build_int_cst (type, 0),
+				       expr.value);
+	    break;
+	  }
 	case RID_AT_SELECTOR:
 	  {
 	    gcc_assert (c_dialect_objc ());
diff --git a/gcc/doc/extend.texi b/gcc/doc/extend.texi
index 9474e93..6dbe2a9 100644
--- a/gcc/doc/extend.texi
+++ b/gcc/doc/extend.texi
@@ -15075,6 +15075,125 @@ unsigned integer (standard, extended or bit-precise).  No integral argument
 promotions are performed on the argument.
 @enddefbuiltin
 
+@defbuiltin{@var{type} __builtin_stdc_bit_ceil (@var{type} @var{arg})}
+The @code{__builtin_stdc_bit_ceil} function is available only
+in C.  It is type-generic, the argument can be any unsigned integer
+(standard, extended or bit-precise).  No integral argument promotions are
+performed on the argument.  It is equivalent to
+@code{@var{arg} <= 1 ? (@var{type}) 1
+: (@var{type}) 2 << (@var{prec} - 1 - __builtin_clzg ((@var{type}) (@var{arg} - 1)))}
+where @var{prec} is bit width of @var{type}, except that side-effects
+in @var{arg} are evaluated just once.
+@enddefbuiltin
+
+@defbuiltin{@var{type} __builtin_stdc_bit_floor (@var{type} @var{arg})}
+The @code{__builtin_stdc_bit_floor} function is available only
+in C.  It is type-generic, the argument can be any unsigned integer
+(standard, extended or bit-precise).  No integral argument promotions are
+performed on the argument.  It is equivalent to
+@code{@var{arg} == 0 ? (@var{type}) 0
+: (@var{type}) 1 << (@var{prec} - 1 - __builtin_clzg (@var{arg}))}
+where @var{prec} is bit width of @var{type}, except that side-effects
+in @var{arg} are evaluated just once.
+@enddefbuiltin
+
+@defbuiltin{unsigned int __builtin_stdc_bit_width (@var{type} @var{arg})}
+The @code{__builtin_stdc_bit_width} function is available only
+in C.  It is type-generic, the argument can be any unsigned integer
+(standard, extended or bit-precise).  No integral argument promotions are
+performed on the argument.  It is equivalent to
+@code{(unsigned int) (@var{prec} - __builtin_clzg (@var{arg}, @var{prec}))}
+where @var{prec} is bit width of @var{type}.
+@enddefbuiltin
+
+@defbuiltin{unsigned int __builtin_stdc_count_ones (@var{type} @var{arg})}
+The @code{__builtin_stdc_count_ones} function is available only
+in C.  It is type-generic, the argument can be any unsigned integer
+(standard, extended or bit-precise).  No integral argument promotions are
+performed on the argument.  It is equivalent to
+@code{(unsigned int) __builtin_popcountg (@var{arg})}
+@enddefbuiltin
+
+@defbuiltin{unsigned int __builtin_stdc_count_zeros (@var{type} @var{arg})}
+The @code{__builtin_stdc_count_zeros} function is available only
+in C.  It is type-generic, the argument can be any unsigned integer
+(standard, extended or bit-precise).  No integral argument promotions are
+performed on the argument.  It is equivalent to
+@code{(unsigned int) __builtin_popcountg ((@var{type}) ~@var{arg})}
+@enddefbuiltin
+
+@defbuiltin{unsigned int __builtin_stdc_first_leading_one (@var{type} @var{arg})}
+The @code{__builtin_stdc_first_leading_one} function is available only
+in C.  It is type-generic, the argument can be any unsigned integer
+(standard, extended or bit-precise).  No integral argument promotions are
+performed on the argument.  It is equivalent to
+@code{__builtin_clzg (@var{arg}, -1) + 1U}
+@enddefbuiltin
+
+@defbuiltin{unsigned int __builtin_stdc_first_leading_zero (@var{type} @var{arg})}
+The @code{__builtin_stdc_first_leading_zero} function is available only
+in C.  It is type-generic, the argument can be any unsigned integer
+(standard, extended or bit-precise).  No integral argument promotions are
+performed on the argument.  It is equivalent to
+@code{__builtin_clzg ((@var{type}) ~@var{arg}, -1) + 1U}
+@enddefbuiltin
+
+@defbuiltin{unsigned int __builtin_stdc_first_trailing_one (@var{type} @var{arg})}
+The @code{__builtin_stdc_first_trailing_one} function is available only
+in C.  It is type-generic, the argument can be any unsigned integer
+(standard, extended or bit-precise).  No integral argument promotions are
+performed on the argument.  It is equivalent to
+@code{__builtin_ctzg (@var{arg}, -1) + 1U}
+@enddefbuiltin
+
+@defbuiltin{unsigned int __builtin_stdc_first_trailing_zero (@var{type} @var{arg})}
+The @code{__builtin_stdc_first_trailing_zero} function is available only
+in C.  It is type-generic, the argument can be any unsigned integer
+(standard, extended or bit-precise).  No integral argument promotions are
+performed on the argument.  It is equivalent to
+@code{__builtin_ctzg ((@var{type}) ~@var{arg}, -1) + 1U}
+@enddefbuiltin
+
+@defbuiltin{unsigned int __builtin_stdc_has_single_bit (@var{type} @var{arg})}
+The @code{__builtin_stdc_has_single_bit} function is available only
+in C.  It is type-generic, the argument can be any unsigned integer
+(standard, extended or bit-precise).  No integral argument promotions are
+performed on the argument.  It is equivalent to
+@code{(_Bool) (__builtin_popcountg (@var{arg}) == 1)}
+@enddefbuiltin
+
+@defbuiltin{unsigned int __builtin_stdc_leading_ones (@var{type} @var{arg})}
+The @code{__builtin_stdc_leading_ones} function is available only
+in C.  It is type-generic, the argument can be any unsigned integer
+(standard, extended or bit-precise).  No integral argument promotions are
+performed on the argument.  It is equivalent to
+@code{(unsigned int) __builtin_clzg ((@var{type}) ~@var{arg}, @var{prec})}
+@enddefbuiltin
+
+@defbuiltin{unsigned int __builtin_stdc_leading_zeros (@var{type} @var{arg})}
+The @code{__builtin_stdc_leading_zeros} function is available only
+in C.  It is type-generic, the argument can be any unsigned integer
+(standard, extended or bit-precise).  No integral argument promotions are
+performed on the argument.  It is equivalent to
+@code{(unsigned int) __builtin_clzg (@var{arg}, @var{prec})}
+@enddefbuiltin
+
+@defbuiltin{unsigned int __builtin_stdc_trailing_ones (@var{type} @var{arg})}
+The @code{__builtin_stdc_trailing_ones} function is available only
+in C.  It is type-generic, the argument can be any unsigned integer
+(standard, extended or bit-precise).  No integral argument promotions are
+performed on the argument.  It is equivalent to
+@code{(unsigned int) __builtin_ctzg ((@var{type}) ~@var{arg}, @var{prec})}
+@enddefbuiltin
+
+@defbuiltin{unsigned int __builtin_stdc_trailing_zeros (@var{type} @var{arg})}
+The @code{__builtin_stdc_trailing_zeros} function is available only
+in C.  It is type-generic, the argument can be any unsigned integer
+(standard, extended or bit-precise).  No integral argument promotions are
+performed on the argument.  It is equivalent to
+@code{(unsigned int) __builtin_ctzg (@var{arg}, @var{prec})}
+@enddefbuiltin
+
 @defbuiltin{double __builtin_powi (double, int)}
 @defbuiltinx{float __builtin_powif (float, int)}
 @defbuiltinx{{long double} __builtin_powil (long double, int)}
diff --git a/gcc/testsuite/gcc.dg/builtin-stdc-bit-1.c b/gcc/testsuite/gcc.dg/builtin-stdc-bit-1.c
new file mode 100644
index 0000000..6ba95ad
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/builtin-stdc-bit-1.c
@@ -0,0 +1,927 @@
+/* { dg-do run } */
+/* { dg-options "-std=c11" } */
+
+unsigned int
+leading_zeros (unsigned char a, unsigned short b, unsigned int c,
+	       unsigned long d, unsigned long long e)
+{
+  return (__builtin_stdc_leading_zeros (a)
+	  + __builtin_stdc_leading_zeros (b)
+	  + __builtin_stdc_leading_zeros (c)
+	  + __builtin_stdc_leading_zeros (d)
+	  + __builtin_stdc_leading_zeros (e));
+}
+
+unsigned int
+leading_ones (unsigned char a, unsigned short b, unsigned int c,
+	      unsigned long d, unsigned long long e)
+{
+  return (__builtin_stdc_leading_ones (a)
+	  + __builtin_stdc_leading_ones (b)
+	  + __builtin_stdc_leading_ones (c)
+	  + __builtin_stdc_leading_ones (d)
+	  + __builtin_stdc_leading_ones (e));
+}
+
+unsigned int
+trailing_zeros (unsigned char a, unsigned short b, unsigned int c,
+		unsigned long d, unsigned long long e)
+{
+  return (__builtin_stdc_trailing_zeros (a)
+	  + __builtin_stdc_trailing_zeros (b)
+	  + __builtin_stdc_trailing_zeros (c)
+	  + __builtin_stdc_trailing_zeros (d)
+	  + __builtin_stdc_trailing_zeros (e));
+}
+
+unsigned int
+trailing_ones (unsigned char a, unsigned short b, unsigned int c,
+	       unsigned long d, unsigned long long e)
+{
+  return (__builtin_stdc_trailing_ones (a)
+	  + __builtin_stdc_trailing_ones (b)
+	  + __builtin_stdc_trailing_ones (c)
+	  + __builtin_stdc_trailing_ones (d)
+	  + __builtin_stdc_trailing_ones (e));
+}
+
+unsigned int
+first_leading_zero (unsigned char a, unsigned short b, unsigned int c,
+		    unsigned long d, unsigned long long e)
+{
+  return (__builtin_stdc_first_leading_zero (a)
+	  + __builtin_stdc_first_leading_zero (b)
+	  + __builtin_stdc_first_leading_zero (c)
+	  + __builtin_stdc_first_leading_zero (d)
+	  + __builtin_stdc_first_leading_zero (e));
+}
+
+unsigned int
+first_leading_one (unsigned char a, unsigned short b, unsigned int c,
+		   unsigned long d, unsigned long long e)
+{
+  return (__builtin_stdc_first_leading_one (a)
+	  + __builtin_stdc_first_leading_one (b)
+	  + __builtin_stdc_first_leading_one (c)
+	  + __builtin_stdc_first_leading_one (d)
+	  + __builtin_stdc_first_leading_one (e));
+}
+
+unsigned int
+first_trailing_zero (unsigned char a, unsigned short b, unsigned int c,
+		     unsigned long d, unsigned long long e)
+{
+  return (__builtin_stdc_first_trailing_zero (a)
+	  + __builtin_stdc_first_trailing_zero (b)
+	  + __builtin_stdc_first_trailing_zero (c)
+	  + __builtin_stdc_first_trailing_zero (d)
+	  + __builtin_stdc_first_trailing_zero (e));
+}
+
+unsigned int
+first_trailing_one (unsigned char a, unsigned short b, unsigned int c,
+		    unsigned long d, unsigned long long e)
+{
+  return (__builtin_stdc_first_trailing_one (a)
+	  + __builtin_stdc_first_trailing_one (b)
+	  + __builtin_stdc_first_trailing_one (c)
+	  + __builtin_stdc_first_trailing_one (d)
+	  + __builtin_stdc_first_trailing_one (e));
+}
+
+unsigned int
+count_zeros (unsigned char a, unsigned short b, unsigned int c,
+	     unsigned long d, unsigned long long e)
+{
+  return (__builtin_stdc_count_zeros (a)
+	  + __builtin_stdc_count_zeros (b)
+	  + __builtin_stdc_count_zeros (c)
+	  + __builtin_stdc_count_zeros (d)
+	  + __builtin_stdc_count_zeros (e));
+}
+
+unsigned int
+count_ones (unsigned char a, unsigned short b, unsigned int c,
+	    unsigned long d, unsigned long long e)
+{
+  return (__builtin_stdc_count_ones (a)
+	  + __builtin_stdc_count_ones (b)
+	  + __builtin_stdc_count_ones (c)
+	  + __builtin_stdc_count_ones (d)
+	  + __builtin_stdc_count_ones (e));
+}
+
+unsigned int
+has_single_bit (unsigned char a, unsigned short b, unsigned int c,
+		unsigned long d, unsigned long long e)
+{
+  return (__builtin_stdc_has_single_bit (a)
+	  || __builtin_stdc_has_single_bit (b)
+	  || __builtin_stdc_has_single_bit (c)
+	  || __builtin_stdc_has_single_bit (d)
+	  || __builtin_stdc_has_single_bit (e));
+}
+
+unsigned int
+bit_width (unsigned char a, unsigned short b, unsigned int c,
+	   unsigned long d, unsigned long long e)
+{
+  return (__builtin_stdc_bit_width (a)
+	  + __builtin_stdc_bit_width (b)
+	  + __builtin_stdc_bit_width (c)
+	  + __builtin_stdc_bit_width (d)
+	  + __builtin_stdc_bit_width (e));
+}
+
+unsigned long long
+bit_floor (unsigned char a, unsigned short b, unsigned int c,
+	   unsigned long d, unsigned long long e)
+{
+  return (__builtin_stdc_bit_floor (a)
+	  + __builtin_stdc_bit_floor (b)
+	  + __builtin_stdc_bit_floor (c)
+	  + __builtin_stdc_bit_floor (d)
+	  + __builtin_stdc_bit_floor (e));
+}
+
+unsigned long long
+bit_ceil (unsigned char a, unsigned short b, unsigned int c,
+	  unsigned long d, unsigned long long e)
+{
+  return (__builtin_stdc_bit_ceil (a)
+	  + __builtin_stdc_bit_ceil (b)
+	  + __builtin_stdc_bit_ceil (c)
+	  + __builtin_stdc_bit_ceil (d)
+	  + __builtin_stdc_bit_ceil (e));
+}
+
+#define expr_has_type(e, t) _Generic (e, default : 0, t : 1)
+
+int
+main ()
+{
+  if (__builtin_stdc_leading_zeros ((unsigned char) 0) != __CHAR_BIT__
+      || !expr_has_type (__builtin_stdc_leading_zeros ((unsigned char) 0), unsigned int)
+      || __builtin_stdc_leading_zeros ((unsigned short) 0) != __SIZEOF_SHORT__ * __CHAR_BIT__
+      || !expr_has_type (__builtin_stdc_leading_zeros ((unsigned short) 0), unsigned int)
+      || __builtin_stdc_leading_zeros (0U) != __SIZEOF_INT__ * __CHAR_BIT__
+      || !expr_has_type (__builtin_stdc_leading_zeros (0U), unsigned int)
+      || __builtin_stdc_leading_zeros (0UL) != __SIZEOF_LONG__ * __CHAR_BIT__
+      || !expr_has_type (__builtin_stdc_leading_zeros (0UL), unsigned int)
+      || __builtin_stdc_leading_zeros (0ULL) != __SIZEOF_LONG_LONG__ * __CHAR_BIT__
+      || !expr_has_type (__builtin_stdc_leading_zeros (0ULL), unsigned int))
+    __builtin_abort ();
+  if (__builtin_stdc_leading_zeros ((unsigned char) ~0U) != 0
+      || __builtin_stdc_leading_zeros ((unsigned short) ~0U) != 0
+      || __builtin_stdc_leading_zeros (~0U) != 0
+      || __builtin_stdc_leading_zeros (~0UL) != 0
+      || __builtin_stdc_leading_zeros (~0ULL) != 0)
+    __builtin_abort ();
+  if (__builtin_stdc_leading_zeros ((unsigned char) 3) != __CHAR_BIT__ - 2
+      || __builtin_stdc_leading_zeros ((unsigned short) 9) != __SIZEOF_SHORT__ * __CHAR_BIT__ - 4
+      || __builtin_stdc_leading_zeros (34U) != __SIZEOF_INT__ * __CHAR_BIT__ - 6
+      || __builtin_stdc_leading_zeros (130UL) != __SIZEOF_LONG__ * __CHAR_BIT__ - 8
+      || __builtin_stdc_leading_zeros (512ULL) != __SIZEOF_LONG_LONG__ * __CHAR_BIT__ - 10)
+    __builtin_abort ();
+  if (__builtin_stdc_leading_ones ((unsigned char) 0) != 0
+      || !expr_has_type (__builtin_stdc_leading_ones ((unsigned char) 0), unsigned int)
+      || __builtin_stdc_leading_ones ((unsigned short) 0) != 0
+      || !expr_has_type (__builtin_stdc_leading_ones ((unsigned short) 0), unsigned int)
+      || __builtin_stdc_leading_ones (0U) != 0
+      || !expr_has_type (__builtin_stdc_leading_ones (0U), unsigned int)
+      || __builtin_stdc_leading_ones (0UL) != 0
+      || !expr_has_type (__builtin_stdc_leading_ones (0UL), unsigned int)
+      || __builtin_stdc_leading_ones (0ULL) != 0
+      || !expr_has_type (__builtin_stdc_leading_ones (0ULL), unsigned int))
+    __builtin_abort ();
+  if (__builtin_stdc_leading_ones ((unsigned char) ~0U) != __CHAR_BIT__
+      || __builtin_stdc_leading_ones ((unsigned short) ~0U) != __SIZEOF_SHORT__ * __CHAR_BIT__
+      || __builtin_stdc_leading_ones (~0U) != __SIZEOF_INT__ * __CHAR_BIT__
+      || __builtin_stdc_leading_ones (~0UL) != __SIZEOF_LONG__ * __CHAR_BIT__
+      || __builtin_stdc_leading_ones (~0ULL) != __SIZEOF_LONG_LONG__ * __CHAR_BIT__)
+    __builtin_abort ();
+  if (__builtin_stdc_leading_ones ((unsigned char) ~3) != __CHAR_BIT__ - 2
+      || __builtin_stdc_leading_ones ((unsigned short) ~9) != __SIZEOF_SHORT__ * __CHAR_BIT__ - 4
+      || __builtin_stdc_leading_ones (~34U) != __SIZEOF_INT__ * __CHAR_BIT__ - 6
+      || __builtin_stdc_leading_ones (~130UL) != __SIZEOF_LONG__ * __CHAR_BIT__ - 8
+      || __builtin_stdc_leading_ones (~512ULL) != __SIZEOF_LONG_LONG__ * __CHAR_BIT__ - 10)
+    __builtin_abort ();
+  if (__builtin_stdc_trailing_zeros ((unsigned char) 0) != __CHAR_BIT__
+      || !expr_has_type (__builtin_stdc_trailing_zeros ((unsigned char) 0), unsigned int)
+      || __builtin_stdc_trailing_zeros ((unsigned short) 0) != __SIZEOF_SHORT__ * __CHAR_BIT__
+      || !expr_has_type (__builtin_stdc_trailing_zeros ((unsigned short) 0), unsigned int)
+      || __builtin_stdc_trailing_zeros (0U) != __SIZEOF_INT__ * __CHAR_BIT__
+      || !expr_has_type (__builtin_stdc_trailing_zeros (0U), unsigned int)
+      || __builtin_stdc_trailing_zeros (0UL) != __SIZEOF_LONG__ * __CHAR_BIT__
+      || !expr_has_type (__builtin_stdc_trailing_zeros (0UL), unsigned int)
+      || __builtin_stdc_trailing_zeros (0ULL) != __SIZEOF_LONG_LONG__ * __CHAR_BIT__
+      || !expr_has_type (__builtin_stdc_trailing_zeros (0ULL), unsigned int))
+    __builtin_abort ();
+  if (__builtin_stdc_trailing_zeros ((unsigned char) ~0U) != 0
+      || __builtin_stdc_trailing_zeros ((unsigned short) ~0U) != 0
+      || __builtin_stdc_trailing_zeros (~0U) != 0
+      || __builtin_stdc_trailing_zeros (~0UL) != 0
+      || __builtin_stdc_trailing_zeros (~0ULL) != 0)
+    __builtin_abort ();
+  if (__builtin_stdc_trailing_zeros ((unsigned char) 2) != 1
+      || __builtin_stdc_trailing_zeros ((unsigned short) 24) != 3
+      || __builtin_stdc_trailing_zeros (32U) != 5
+      || __builtin_stdc_trailing_zeros (128UL) != 7
+      || __builtin_stdc_trailing_zeros (512ULL) != 9)
+    __builtin_abort ();
+  if (__builtin_stdc_trailing_ones ((unsigned char) 0) != 0
+      || !expr_has_type (__builtin_stdc_trailing_ones ((unsigned char) 0), unsigned int)
+      || __builtin_stdc_trailing_ones ((unsigned short) 0) != 0
+      || !expr_has_type (__builtin_stdc_trailing_ones ((unsigned short) 0), unsigned int)
+      || __builtin_stdc_trailing_ones (0U) != 0
+      || !expr_has_type (__builtin_stdc_trailing_ones (0U), unsigned int)
+      || __builtin_stdc_trailing_ones (0UL) != 0
+      || !expr_has_type (__builtin_stdc_trailing_ones (0UL), unsigned int)
+      || __builtin_stdc_trailing_ones (0ULL) != 0
+      || !expr_has_type (__builtin_stdc_trailing_ones (0ULL), unsigned int))
+    __builtin_abort ();
+  if (__builtin_stdc_trailing_ones ((unsigned char) ~0U) != __CHAR_BIT__
+      || __builtin_stdc_trailing_ones ((unsigned short) ~0U) != __SIZEOF_SHORT__ * __CHAR_BIT__
+      || __builtin_stdc_trailing_ones (~0U) != __SIZEOF_INT__ * __CHAR_BIT__
+      || __builtin_stdc_trailing_ones (~0UL) != __SIZEOF_LONG__ * __CHAR_BIT__
+      || __builtin_stdc_trailing_ones (~0ULL) != __SIZEOF_LONG_LONG__ * __CHAR_BIT__)
+    __builtin_abort ();
+  if (__builtin_stdc_trailing_ones ((unsigned char) 5) != 1
+      || __builtin_stdc_trailing_ones ((unsigned short) 15) != 4
+      || __builtin_stdc_trailing_ones (127U) != 7
+      || __builtin_stdc_trailing_ones (511UL) != 9
+      || __builtin_stdc_trailing_ones (~0ULL >> 2) != __SIZEOF_LONG_LONG__ * __CHAR_BIT__ - 2)
+    __builtin_abort ();
+  if (__builtin_stdc_first_leading_zero ((unsigned char) 0) != 1
+      || !expr_has_type (__builtin_stdc_first_leading_zero ((unsigned char) 0), unsigned int)
+      || __builtin_stdc_first_leading_zero ((unsigned short) 0) != 1
+      || !expr_has_type (__builtin_stdc_first_leading_zero ((unsigned short) 0), unsigned int)
+      || __builtin_stdc_first_leading_zero (0U) != 1
+      || !expr_has_type (__builtin_stdc_first_leading_zero (0U), unsigned int)
+      || __builtin_stdc_first_leading_zero (0UL) != 1
+      || !expr_has_type (__builtin_stdc_first_leading_zero (0UL), unsigned int)
+      || __builtin_stdc_first_leading_zero (0ULL) != 1
+      || !expr_has_type (__builtin_stdc_first_leading_zero (0ULL), unsigned int))
+    __builtin_abort ();
+  if (__builtin_stdc_first_leading_zero ((unsigned char) ~0U) != 0
+      || __builtin_stdc_first_leading_zero ((unsigned short) ~0U) != 0
+      || __builtin_stdc_first_leading_zero (~0U) != 0
+      || __builtin_stdc_first_leading_zero (~0UL) != 0
+      || __builtin_stdc_first_leading_zero (~0ULL) != 0)
+    __builtin_abort ();
+  if (__builtin_stdc_first_leading_zero ((unsigned char) ~3U) != __CHAR_BIT__ - 1
+      || __builtin_stdc_first_leading_zero ((unsigned short) ~15U) != __SIZEOF_SHORT__ * __CHAR_BIT__ - 3
+      || __builtin_stdc_first_leading_zero (~63U) != __SIZEOF_INT__ * __CHAR_BIT__ - 5
+      || __builtin_stdc_first_leading_zero (~255UL) != __SIZEOF_LONG__ * __CHAR_BIT__ - 7
+      || __builtin_stdc_first_leading_zero (~1023ULL) != __SIZEOF_LONG_LONG__ * __CHAR_BIT__ - 9)
+    __builtin_abort ();
+  if (__builtin_stdc_first_leading_one ((unsigned char) 0) != 0
+      || !expr_has_type (__builtin_stdc_first_leading_one ((unsigned char) 0), unsigned int)
+      || __builtin_stdc_first_leading_one ((unsigned short) 0) != 0
+      || !expr_has_type (__builtin_stdc_first_leading_one ((unsigned short) 0), unsigned int)
+      || __builtin_stdc_first_leading_one (0U) != 0
+      || !expr_has_type (__builtin_stdc_first_leading_one (0U), unsigned int)
+      || __builtin_stdc_first_leading_one (0UL) != 0
+      || !expr_has_type (__builtin_stdc_first_leading_one (0UL), unsigned int)
+      || __builtin_stdc_first_leading_one (0ULL) != 0
+      || !expr_has_type (__builtin_stdc_first_leading_one (0ULL), unsigned int))
+    __builtin_abort ();
+  if (__builtin_stdc_first_leading_one ((unsigned char) ~0U) != 1
+      || __builtin_stdc_first_leading_one ((unsigned short) ~0U) != 1
+      || __builtin_stdc_first_leading_one (~0U) != 1
+      || __builtin_stdc_first_leading_one (~0UL) != 1
+      || __builtin_stdc_first_leading_one (~0ULL) != 1)
+    __builtin_abort ();
+  if (__builtin_stdc_first_leading_one ((unsigned char) 3) != __CHAR_BIT__ - 1
+      || __builtin_stdc_first_leading_one ((unsigned short) 9) != __SIZEOF_SHORT__ * __CHAR_BIT__ - 3
+      || __builtin_stdc_first_leading_one (34U) != __SIZEOF_INT__ * __CHAR_BIT__ - 5
+      || __builtin_stdc_first_leading_one (130UL) != __SIZEOF_LONG__ * __CHAR_BIT__ - 7
+      || __builtin_stdc_first_leading_one (512ULL) != __SIZEOF_LONG_LONG__ * __CHAR_BIT__ - 9)
+    __builtin_abort ();
+  if (__builtin_stdc_first_trailing_zero ((unsigned char) 0) != 1
+      || !expr_has_type (__builtin_stdc_first_trailing_zero ((unsigned char) 0), unsigned int)
+      || __builtin_stdc_first_trailing_zero ((unsigned short) 0) != 1
+      || !expr_has_type (__builtin_stdc_first_trailing_zero ((unsigned short) 0), unsigned int)
+      || __builtin_stdc_first_trailing_zero (0U) != 1
+      || !expr_has_type (__builtin_stdc_first_trailing_zero (0U), unsigned int)
+      || __builtin_stdc_first_trailing_zero (0UL) != 1
+      || !expr_has_type (__builtin_stdc_first_trailing_zero (0UL), unsigned int)
+      || __builtin_stdc_first_trailing_zero (0ULL) != 1
+      || !expr_has_type (__builtin_stdc_first_trailing_zero (0ULL), unsigned int))
+    __builtin_abort ();
+  if (__builtin_stdc_first_trailing_zero ((unsigned char) ~0U) != 0
+      || __builtin_stdc_first_trailing_zero ((unsigned short) ~0U) != 0
+      || __builtin_stdc_first_trailing_zero (~0U) != 0
+      || __builtin_stdc_first_trailing_zero (~0UL) != 0
+      || __builtin_stdc_first_trailing_zero (~0ULL) != 0)
+    __builtin_abort ();
+  if (__builtin_stdc_first_trailing_zero ((unsigned char) 2) != 1
+      || __builtin_stdc_first_trailing_zero ((unsigned short) 15) != 5
+      || __builtin_stdc_first_trailing_zero (63U) != 7
+      || __builtin_stdc_first_trailing_zero (128UL) != 1
+      || __builtin_stdc_first_trailing_zero (511ULL) != 10)
+    __builtin_abort ();
+  if (__builtin_stdc_first_trailing_one ((unsigned char) 0) != 0
+      || !expr_has_type (__builtin_stdc_first_trailing_one ((unsigned char) 0), unsigned int)
+      || __builtin_stdc_first_trailing_one ((unsigned short) 0) != 0
+      || !expr_has_type (__builtin_stdc_first_trailing_one ((unsigned short) 0), unsigned int)
+      || __builtin_stdc_first_trailing_one (0U) != 0
+      || !expr_has_type (__builtin_stdc_first_trailing_one (0U), unsigned int)
+      || __builtin_stdc_first_trailing_one (0UL) != 0
+      || !expr_has_type (__builtin_stdc_first_trailing_one (0UL), unsigned int)
+      || __builtin_stdc_first_trailing_one (0ULL) != 0
+      || !expr_has_type (__builtin_stdc_first_trailing_one (0ULL), unsigned int))
+    __builtin_abort ();
+  if (__builtin_stdc_first_trailing_one ((unsigned char) ~0U) != 1
+      || __builtin_stdc_first_trailing_one ((unsigned short) ~0U) != 1
+      || __builtin_stdc_first_trailing_one (~0U) != 1
+      || __builtin_stdc_first_trailing_one (~0UL) != 1
+      || __builtin_stdc_first_trailing_one (~0ULL) != 1)
+    __builtin_abort ();
+  if (__builtin_stdc_first_trailing_one ((unsigned char) 4) != 3
+      || __builtin_stdc_first_trailing_one ((unsigned short) 96) != 6
+      || __builtin_stdc_first_trailing_one (127U) != 1
+      || __builtin_stdc_first_trailing_one (511UL) != 1
+      || __builtin_stdc_first_trailing_one (~0ULL << 12) != 13)
+    __builtin_abort ();
+  if (__builtin_stdc_count_zeros ((unsigned char) 0) != __CHAR_BIT__
+      || !expr_has_type (__builtin_stdc_count_zeros ((unsigned char) 0), unsigned int)
+      || __builtin_stdc_count_zeros ((unsigned short) 0) != __SIZEOF_SHORT__ * __CHAR_BIT__
+      || !expr_has_type (__builtin_stdc_count_zeros ((unsigned short) 0), unsigned int)
+      || __builtin_stdc_count_zeros (0U) != __SIZEOF_INT__ * __CHAR_BIT__
+      || !expr_has_type (__builtin_stdc_count_zeros (0U), unsigned int)
+      || __builtin_stdc_count_zeros (0UL) != __SIZEOF_LONG__ * __CHAR_BIT__
+      || !expr_has_type (__builtin_stdc_count_zeros (0UL), unsigned int)
+      || __builtin_stdc_count_zeros (0ULL) != __SIZEOF_LONG_LONG__ * __CHAR_BIT__
+      || !expr_has_type (__builtin_stdc_count_zeros (0ULL), unsigned int))
+    __builtin_abort ();
+  if (__builtin_stdc_count_zeros ((unsigned char) ~0U) != 0
+      || __builtin_stdc_count_zeros ((unsigned short) ~0U) != 0
+      || __builtin_stdc_count_zeros (~0U) != 0
+      || __builtin_stdc_count_zeros (~0UL) != 0
+      || __builtin_stdc_count_zeros (~0ULL) != 0)
+    __builtin_abort ();
+  if (__builtin_stdc_count_zeros ((unsigned char) 1U) != __CHAR_BIT__ - 1
+      || __builtin_stdc_count_zeros ((unsigned short) 42) != __SIZEOF_SHORT__ * __CHAR_BIT__ - 3
+      || __builtin_stdc_count_zeros (291U) != __SIZEOF_INT__ * __CHAR_BIT__ - 4
+      || __builtin_stdc_count_zeros (~1315UL) != 5
+      || __builtin_stdc_count_zeros (3363ULL) != __SIZEOF_LONG_LONG__ * __CHAR_BIT__ - 6)
+    __builtin_abort ();
+  if (__builtin_stdc_count_ones ((unsigned char) 0) != 0
+      || !expr_has_type (__builtin_stdc_count_ones ((unsigned char) 0), unsigned int)
+      || __builtin_stdc_count_ones ((unsigned short) 0) != 0
+      || !expr_has_type (__builtin_stdc_count_ones ((unsigned short) 0), unsigned int)
+      || __builtin_stdc_count_ones (0U) != 0
+      || !expr_has_type (__builtin_stdc_count_ones (0U), unsigned int)
+      || __builtin_stdc_count_ones (0UL) != 0
+      || !expr_has_type (__builtin_stdc_count_ones (0UL), unsigned int)
+      || __builtin_stdc_count_ones (0ULL) != 0
+      || !expr_has_type (__builtin_stdc_count_ones (0ULL), unsigned int))
+    __builtin_abort ();
+  if (__builtin_stdc_count_ones ((unsigned char) ~0U) != __CHAR_BIT__
+      || __builtin_stdc_count_ones ((unsigned short) ~0U) != __SIZEOF_SHORT__ * __CHAR_BIT__
+      || __builtin_stdc_count_ones (~0U) != __SIZEOF_INT__ * __CHAR_BIT__
+      || __builtin_stdc_count_ones (~0UL) != __SIZEOF_LONG__ * __CHAR_BIT__
+      || __builtin_stdc_count_ones (~0ULL) != __SIZEOF_LONG_LONG__ * __CHAR_BIT__)
+    __builtin_abort ();
+  if (__builtin_stdc_count_ones ((unsigned char) ~1U) != __CHAR_BIT__ - 1
+      || __builtin_stdc_count_ones ((unsigned short) ~42) != __SIZEOF_SHORT__ * __CHAR_BIT__ - 3
+      || __builtin_stdc_count_ones (~291U) != __SIZEOF_INT__ * __CHAR_BIT__ - 4
+      || __builtin_stdc_count_ones (1315UL) != 5
+      || __builtin_stdc_count_ones (~3363ULL) != __SIZEOF_LONG_LONG__ * __CHAR_BIT__ - 6)
+    __builtin_abort ();
+  if (__builtin_stdc_has_single_bit ((unsigned char) 0)
+      || !expr_has_type (__builtin_stdc_has_single_bit ((unsigned char) 0), _Bool)
+      || __builtin_stdc_has_single_bit ((unsigned short) 0)
+      || !expr_has_type (__builtin_stdc_has_single_bit ((unsigned short) 0), _Bool)
+      || __builtin_stdc_has_single_bit (0U)
+      || !expr_has_type (__builtin_stdc_has_single_bit (0U), _Bool)
+      || __builtin_stdc_has_single_bit (0UL)
+      || !expr_has_type (__builtin_stdc_has_single_bit (0UL), _Bool)
+      || __builtin_stdc_has_single_bit (0ULL)
+      || !expr_has_type (__builtin_stdc_has_single_bit (0ULL), _Bool))
+    __builtin_abort ();
+  if (!__builtin_stdc_has_single_bit ((unsigned char) 2)
+      || !__builtin_stdc_has_single_bit ((unsigned short) 8)
+      || !__builtin_stdc_has_single_bit (32U)
+      || !__builtin_stdc_has_single_bit (128UL)
+      || !__builtin_stdc_has_single_bit (512ULL))
+    __builtin_abort ();
+  if (__builtin_stdc_has_single_bit ((unsigned char) 7)
+      || __builtin_stdc_has_single_bit ((unsigned short) 96)
+      || __builtin_stdc_has_single_bit (513U)
+      || __builtin_stdc_has_single_bit (1022UL)
+      || __builtin_stdc_has_single_bit (12ULL))
+    __builtin_abort ();
+  if (__builtin_stdc_bit_width ((unsigned char) 0) != 0
+      || !expr_has_type (__builtin_stdc_bit_width ((unsigned char) 0), unsigned int)
+      || __builtin_stdc_bit_width ((unsigned short) 0) != 0
+      || !expr_has_type (__builtin_stdc_bit_width ((unsigned short) 0), unsigned int)
+      || __builtin_stdc_bit_width (0U) != 0
+      || !expr_has_type (__builtin_stdc_bit_width (0U), unsigned int)
+      || __builtin_stdc_bit_width (0UL) != 0
+      || !expr_has_type (__builtin_stdc_bit_width (0UL), unsigned int)
+      || __builtin_stdc_bit_width (0ULL) != 0
+      || !expr_has_type (__builtin_stdc_bit_width (0ULL), unsigned int))
+    __builtin_abort ();
+  if (__builtin_stdc_bit_width ((unsigned char) ~0U) != __CHAR_BIT__
+      || __builtin_stdc_bit_width ((unsigned short) ~0U) != __SIZEOF_SHORT__ * __CHAR_BIT__
+      || __builtin_stdc_bit_width (~0U) != __SIZEOF_INT__ * __CHAR_BIT__
+      || __builtin_stdc_bit_width (~0UL) != __SIZEOF_LONG__ * __CHAR_BIT__
+      || __builtin_stdc_bit_width (~0ULL) != __SIZEOF_LONG_LONG__ * __CHAR_BIT__)
+    __builtin_abort ();
+  if (__builtin_stdc_bit_width ((unsigned char) ((unsigned char) ~0U >> 1)) != __CHAR_BIT__ - 1
+      || __builtin_stdc_bit_width ((unsigned char) 6) != 3
+      || __builtin_stdc_bit_width ((unsigned short) 12U) != 4
+      || __builtin_stdc_bit_width ((unsigned short) ((unsigned short) ~0U >> 5)) != __SIZEOF_SHORT__ * __CHAR_BIT__ - 5
+      || __builtin_stdc_bit_width (137U) != 8
+      || __builtin_stdc_bit_width (269U) != 9
+      || __builtin_stdc_bit_width (39UL) != 6
+      || __builtin_stdc_bit_width (~0UL >> 2) != __SIZEOF_LONG__ * __CHAR_BIT__ - 2
+      || __builtin_stdc_bit_width (1023ULL) != 10
+      || __builtin_stdc_bit_width (1024ULL) != 11)
+    __builtin_abort ();
+  if (__builtin_stdc_bit_floor ((unsigned char) 0) != 0
+      || !expr_has_type (__builtin_stdc_bit_floor ((unsigned char) 0), unsigned char)
+      || __builtin_stdc_bit_floor ((unsigned short) 0) != 0
+      || !expr_has_type (__builtin_stdc_bit_floor ((unsigned short) 0), unsigned short)
+      || __builtin_stdc_bit_floor (0U) != 0U
+      || !expr_has_type (__builtin_stdc_bit_floor (0U), unsigned int)
+      || __builtin_stdc_bit_floor (0UL) != 0UL
+      || !expr_has_type (__builtin_stdc_bit_floor (0UL), unsigned long)
+      || __builtin_stdc_bit_floor (0ULL) != 0ULL
+      || !expr_has_type (__builtin_stdc_bit_floor (0ULL), unsigned long long))
+    __builtin_abort ();
+  if (__builtin_stdc_bit_floor ((unsigned char) ~0U) != (1U << (__CHAR_BIT__ - 1))
+      || __builtin_stdc_bit_floor ((unsigned short) ~0U) != (1U << (__SIZEOF_SHORT__ * __CHAR_BIT__ - 1))
+      || __builtin_stdc_bit_floor (~0U) != (1U << (__SIZEOF_INT__ * __CHAR_BIT__ - 1))
+      || __builtin_stdc_bit_floor (~0UL) != (1UL << (__SIZEOF_LONG__ * __CHAR_BIT__ - 1))
+      || __builtin_stdc_bit_floor (~0ULL) != (1ULL << (__SIZEOF_LONG_LONG__ * __CHAR_BIT__ - 1)))
+    __builtin_abort ();
+  if (__builtin_stdc_bit_floor ((unsigned char) 4) != 4
+      || __builtin_stdc_bit_floor ((unsigned char) 7) != 4
+      || __builtin_stdc_bit_floor ((unsigned short) 8U) != 8
+      || __builtin_stdc_bit_floor ((unsigned short) 31U) != 16
+      || __builtin_stdc_bit_floor (137U) != 128U
+      || __builtin_stdc_bit_floor (269U) != 256U
+      || __builtin_stdc_bit_floor (511UL) != 256UL
+      || __builtin_stdc_bit_floor (512UL) != 512UL
+      || __builtin_stdc_bit_floor (513UL) != 512ULL
+      || __builtin_stdc_bit_floor (1024ULL) != 1024ULL)
+    __builtin_abort ();
+  if (__builtin_stdc_bit_ceil ((unsigned char) 0) != 1
+      || !expr_has_type (__builtin_stdc_bit_ceil ((unsigned char) 0), unsigned char)
+      || __builtin_stdc_bit_ceil ((unsigned short) 0) != 1
+      || !expr_has_type (__builtin_stdc_bit_ceil ((unsigned short) 0), unsigned short)
+      || __builtin_stdc_bit_ceil (0U) != 1U
+      || !expr_has_type (__builtin_stdc_bit_ceil (0U), unsigned int)
+      || __builtin_stdc_bit_ceil (0UL) != 1UL
+      || !expr_has_type (__builtin_stdc_bit_ceil (0UL), unsigned long)
+      || __builtin_stdc_bit_ceil (0ULL) != 1ULL
+      || !expr_has_type (__builtin_stdc_bit_ceil (0ULL), unsigned long long))
+    __builtin_abort ();
+  if (__builtin_stdc_bit_ceil ((unsigned char) ~0U) != 0
+      || __builtin_stdc_bit_ceil ((unsigned short) ~0U) != 0
+      || __builtin_stdc_bit_ceil (~0U) != 0U
+      || __builtin_stdc_bit_ceil (~0UL) != 0UL
+      || __builtin_stdc_bit_ceil (~0ULL) != 0ULL)
+    __builtin_abort ();
+  if (__builtin_stdc_bit_ceil ((unsigned char) ((unsigned char) ~0U >> 1)) != (1U << (__CHAR_BIT__ - 1))
+      || __builtin_stdc_bit_ceil ((unsigned char) ((unsigned char) ~0U >> 1)) != (1U << (__CHAR_BIT__ - 1))
+      || __builtin_stdc_bit_ceil ((unsigned short) ((unsigned short) ~0U >> 1)) != (1U << (__SIZEOF_SHORT__ * __CHAR_BIT__ - 1))
+      || __builtin_stdc_bit_ceil ((unsigned short) ((unsigned short) ~0U >> 1)) != (1U << (__SIZEOF_SHORT__ * __CHAR_BIT__ - 1))
+      || __builtin_stdc_bit_ceil (~0U >> 1) != (1U << (__SIZEOF_INT__ * __CHAR_BIT__ - 1))
+      || __builtin_stdc_bit_ceil (1U << (__SIZEOF_INT__ * __CHAR_BIT__ - 1)) != (1U << (__SIZEOF_INT__ * __CHAR_BIT__ - 1))
+      || __builtin_stdc_bit_ceil (~0UL >> 1) != (1UL << (__SIZEOF_LONG__ * __CHAR_BIT__ - 1))
+      || __builtin_stdc_bit_ceil (~0UL >> 1) != (1UL << (__SIZEOF_LONG__ * __CHAR_BIT__ - 1))
+      || __builtin_stdc_bit_ceil (1ULL << (__SIZEOF_LONG_LONG__ * __CHAR_BIT__ - 1)) != (1ULL << (__SIZEOF_LONG_LONG__ * __CHAR_BIT__ - 1))
+      || __builtin_stdc_bit_ceil (~0ULL >> 1) != (1ULL << (__SIZEOF_LONG_LONG__ * __CHAR_BIT__ - 1)))
+    __builtin_abort ();
+  if (__builtin_stdc_bit_ceil ((unsigned char) 1) != 1
+      || __builtin_stdc_bit_ceil ((unsigned char) 2) != 2
+      || __builtin_stdc_bit_ceil ((unsigned short) 3U) != 4
+      || __builtin_stdc_bit_ceil ((unsigned short) 4U) != 4
+      || __builtin_stdc_bit_ceil (5U) != 8U
+      || __builtin_stdc_bit_ceil (269U) != 512U
+      || __builtin_stdc_bit_ceil (511UL) != 512UL
+      || __builtin_stdc_bit_ceil (512UL) != 512UL
+      || __builtin_stdc_bit_ceil (513ULL) != 1024ULL
+      || __builtin_stdc_bit_ceil (1025ULL) != 2048ULL)
+    __builtin_abort ();
+#ifdef __SIZEOF_INT128__
+  if (__builtin_stdc_leading_zeros ((unsigned __int128) 0) != __SIZEOF_INT128__ * __CHAR_BIT__
+      || !expr_has_type (__builtin_stdc_leading_zeros ((unsigned __int128) 0), unsigned int)
+      || __builtin_stdc_leading_zeros (~(unsigned __int128) 0) != 0)
+    __builtin_abort ();
+  if (__builtin_stdc_leading_ones ((unsigned __int128) 0) != 0
+      || !expr_has_type (__builtin_stdc_leading_ones ((unsigned __int128) 0), unsigned int)
+      || __builtin_stdc_leading_ones (~(unsigned __int128) 0) != __SIZEOF_INT128__ * __CHAR_BIT__)
+    __builtin_abort ();
+  if (__builtin_stdc_trailing_zeros ((unsigned __int128) 0) != __SIZEOF_INT128__ * __CHAR_BIT__
+      || !expr_has_type (__builtin_stdc_trailing_zeros ((unsigned __int128) 0), unsigned int)
+      || __builtin_stdc_trailing_zeros (~(unsigned __int128) 0) != 0)
+    __builtin_abort ();
+  if (__builtin_stdc_trailing_ones ((unsigned __int128) 0) != 0
+      || !expr_has_type (__builtin_stdc_trailing_ones ((unsigned __int128) 0), unsigned int)
+      || __builtin_stdc_trailing_ones (~(unsigned __int128) 0) != __SIZEOF_INT128__ * __CHAR_BIT__)
+    __builtin_abort ();
+  if (__builtin_stdc_first_leading_zero ((unsigned __int128) 0) != 1
+      || !expr_has_type (__builtin_stdc_first_leading_zero ((unsigned __int128) 0), unsigned int)
+      || __builtin_stdc_first_leading_zero (~(unsigned __int128) 0) != 0)
+    __builtin_abort ();
+  if (__builtin_stdc_first_leading_one ((unsigned __int128) 0) != 0
+      || !expr_has_type (__builtin_stdc_first_leading_one ((unsigned __int128) 0), unsigned int)
+      || __builtin_stdc_first_leading_one (~(unsigned __int128) 0) != 1)
+    __builtin_abort ();
+  if (__builtin_stdc_first_trailing_zero ((unsigned __int128) 0) != 1
+      || !expr_has_type (__builtin_stdc_first_trailing_zero ((unsigned __int128) 0), unsigned int)
+      || __builtin_stdc_first_trailing_zero (~(unsigned __int128) 0) != 0)
+    __builtin_abort ();
+  if (__builtin_stdc_first_trailing_one ((unsigned __int128) 0) != 0
+      || !expr_has_type (__builtin_stdc_first_trailing_one ((unsigned __int128) 0), unsigned int)
+      || __builtin_stdc_first_trailing_one (~(unsigned __int128) 0) != 1)
+    __builtin_abort ();
+  if (__builtin_stdc_count_zeros ((unsigned __int128) 0) != __SIZEOF_INT128__ * __CHAR_BIT__
+      || !expr_has_type (__builtin_stdc_count_zeros ((unsigned __int128) 0), unsigned int)
+      || __builtin_stdc_count_zeros (~(unsigned __int128) 0) != 0)
+    __builtin_abort ();
+  if (__builtin_stdc_count_ones ((unsigned __int128) 0) != 0
+      || !expr_has_type (__builtin_stdc_count_ones ((unsigned __int128) 0), unsigned int)
+      || __builtin_stdc_count_ones (~(unsigned __int128) 0) != __SIZEOF_INT128__ * __CHAR_BIT__)
+    __builtin_abort ();
+  if (__builtin_stdc_has_single_bit ((unsigned __int128) 0)
+      || !expr_has_type (__builtin_stdc_has_single_bit ((unsigned __int128) 0), _Bool)
+      || __builtin_stdc_has_single_bit (~(unsigned __int128) 0))
+    __builtin_abort ();
+  if (__builtin_stdc_bit_width ((unsigned __int128) 0) != 0
+      || !expr_has_type (__builtin_stdc_bit_width ((unsigned __int128) 0), unsigned int)
+      || __builtin_stdc_bit_width (~(unsigned __int128) 0) != __SIZEOF_INT128__ * __CHAR_BIT__)
+    __builtin_abort ();
+  if (__builtin_stdc_bit_floor ((unsigned __int128) 0) != 0
+      || !expr_has_type (__builtin_stdc_bit_floor ((unsigned __int128) 0), unsigned __int128)
+      || __builtin_stdc_bit_floor (~(unsigned __int128) 0) != ((unsigned __int128) 1) << (__SIZEOF_INT128__ * __CHAR_BIT__ - 1))
+    __builtin_abort ();
+  if (__builtin_stdc_bit_ceil ((unsigned __int128) 0) != 1
+      || !expr_has_type (__builtin_stdc_bit_ceil ((unsigned __int128) 0), unsigned __int128)
+      || __builtin_stdc_bit_ceil ((unsigned __int128) 1) != 1
+      || __builtin_stdc_bit_ceil ((~(unsigned __int128) 0) >> 1) != ((unsigned __int128) 1) << (__SIZEOF_INT128__ * __CHAR_BIT__ - 1)
+      || __builtin_stdc_bit_ceil (~(unsigned __int128) 0) != 0)
+    __builtin_abort ();
+#endif
+#if __has_builtin (__builtin_stdc_leading_zeros) != 1
+#error __builtin_stdc_leading_zeros not implemented
+#endif
+#if __has_builtin (__builtin_stdc_leading_ones) != 1
+#error __builtin_stdc_leading_ones not implemented
+#endif
+#if __has_builtin (__builtin_stdc_trailing_zeros) != 1
+#error __builtin_stdc_trailing_zeros not implemented
+#endif
+#if __has_builtin (__builtin_stdc_trailing_ones) != 1
+#error __builtin_stdc_trailing_ones not implemented
+#endif
+#if __has_builtin (__builtin_stdc_first_leading_zero) != 1
+#error __builtin_stdc_first_leading_zero not implemented
+#endif
+#if __has_builtin (__builtin_stdc_first_leading_one) != 1
+#error __builtin_stdc_first_leading_one not implemented
+#endif
+#if __has_builtin (__builtin_stdc_first_trailing_zero) != 1
+#error __builtin_stdc_first_trailing_zero not implemented
+#endif
+#if __has_builtin (__builtin_stdc_first_trailing_one) != 1
+#error __builtin_stdc_first_trailing_one not implemented
+#endif
+#if __has_builtin (__builtin_stdc_count_zeros) != 1
+#error __builtin_stdc_count_zeros not implemented
+#endif
+#if __has_builtin (__builtin_stdc_count_ones) != 1
+#error __builtin_stdc_count_ones not implemented
+#endif
+#if __has_builtin (__builtin_stdc_has_single_bit) != 1
+#error __builtin_stdc_single_bit not implemented
+#endif
+#if __has_builtin (__builtin_stdc_bit_width) != 1
+#error __builtin_stdc_bit_width not implemented
+#endif
+#if __has_builtin (__builtin_stdc_bit_floor) != 1
+#error __builtin_stdc_bit_floor not implemented
+#endif
+#if __has_builtin (__builtin_stdc_bit_ceil) != 1
+#error __builtin_stdc_bit_ceil not implemented
+#endif
+  unsigned char a = 0;
+  if (__builtin_stdc_bit_width (a++) != 0 || a != 1)
+    __builtin_abort ();
+  unsigned long long b = 0;
+  if (__builtin_stdc_bit_width (b++) != 0 || b != 1)
+    __builtin_abort ();
+  if (__builtin_stdc_bit_floor (a++) != 1 || a != 2)
+    __builtin_abort ();
+  if (__builtin_stdc_bit_floor (b++) != 1 || b != 2)
+    __builtin_abort ();
+  if (__builtin_stdc_bit_ceil (a++) != 2 || a != 3)
+    __builtin_abort ();
+  if (__builtin_stdc_bit_ceil (b++) != 2 || b != 3)
+    __builtin_abort ();
+  if (__builtin_stdc_leading_zeros (a++) != __CHAR_BIT__ - 2 || a != 4)
+    __builtin_abort ();
+  if (__builtin_stdc_leading_zeros (b++) != __SIZEOF_LONG_LONG__ * __CHAR_BIT__ - 2 || b != 4)
+    __builtin_abort ();
+  if (__builtin_stdc_leading_ones (a++) != 0 || a != 5)
+    __builtin_abort ();
+  if (__builtin_stdc_leading_ones (b++) != 0 || b != 5)
+    __builtin_abort ();
+  if (__builtin_stdc_trailing_zeros (a++) != 0 || a != 6)
+    __builtin_abort ();
+  if (__builtin_stdc_trailing_zeros (b++) != 0 || b != 6)
+    __builtin_abort ();
+  if (__builtin_stdc_trailing_ones (a++) != 0 || a != 7)
+    __builtin_abort ();
+  if (__builtin_stdc_trailing_ones (b++) != 0 || b != 7)
+    __builtin_abort ();
+  if (__builtin_stdc_first_leading_zero (a++) != 1 || a != 8)
+    __builtin_abort ();
+  if (__builtin_stdc_first_leading_zero (b++) != 1 || b != 8)
+    __builtin_abort ();
+  if (__builtin_stdc_first_leading_one (a++) != __CHAR_BIT__ - 3 || a != 9)
+    __builtin_abort ();
+  if (__builtin_stdc_first_leading_one (b++) != __SIZEOF_LONG_LONG__ * __CHAR_BIT__ - 3 || b != 9)
+    __builtin_abort ();
+  if (__builtin_stdc_first_trailing_zero (a++) != 2 || a != 10)
+    __builtin_abort ();
+  if (__builtin_stdc_first_trailing_zero (b++) != 2 || b != 10)
+    __builtin_abort ();
+  if (__builtin_stdc_first_trailing_one (a++) != 2 || a != 11)
+    __builtin_abort ();
+  if (__builtin_stdc_first_trailing_one (b++) != 2 || b != 11)
+    __builtin_abort ();
+  if (__builtin_stdc_count_zeros (a++) != __CHAR_BIT__ - 3 || a != 12)
+    __builtin_abort ();
+  if (__builtin_stdc_count_zeros (b++) != __SIZEOF_LONG_LONG__ * __CHAR_BIT__ - 3 || b != 12)
+    __builtin_abort ();
+  if (__builtin_stdc_count_ones (a++) != 2 || a != 13)
+    __builtin_abort ();
+  if (__builtin_stdc_count_ones (b++) != 2 || b != 13)
+    __builtin_abort ();
+  if (__builtin_stdc_has_single_bit (a++) || a != 14)
+    __builtin_abort ();
+  if (__builtin_stdc_has_single_bit (b++) || b != 14)
+    __builtin_abort ();
+#if __BITINT_MAXWIDTH__ >= 64
+  if (__builtin_stdc_leading_zeros (0uwb) != 1
+      || !expr_has_type (__builtin_stdc_leading_zeros (0uwb), unsigned int)
+      || __builtin_stdc_leading_zeros (1uwb) != 0
+      || !expr_has_type (__builtin_stdc_leading_zeros (1uwb), unsigned int))
+    __builtin_abort ();
+  if (__builtin_stdc_leading_ones (0uwb) != 0
+      || !expr_has_type (__builtin_stdc_leading_ones (0uwb), unsigned int)
+      || __builtin_stdc_leading_ones (1uwb) != 1
+      || !expr_has_type (__builtin_stdc_leading_ones (1uwb), unsigned int))
+    __builtin_abort ();
+  if (__builtin_stdc_trailing_zeros (0uwb) != 1
+      || !expr_has_type (__builtin_stdc_trailing_zeros (0uwb), unsigned int)
+      || __builtin_stdc_trailing_zeros (1uwb) != 0
+      || !expr_has_type (__builtin_stdc_trailing_zeros (1uwb), unsigned int))
+    __builtin_abort ();
+  if (__builtin_stdc_trailing_ones (0uwb) != 0
+      || !expr_has_type (__builtin_stdc_trailing_ones (0uwb), unsigned int)
+      || __builtin_stdc_trailing_ones (1uwb) != 1
+      || !expr_has_type (__builtin_stdc_trailing_ones (1uwb), unsigned int))
+    __builtin_abort ();
+  if (__builtin_stdc_first_leading_zero (0uwb) != 1
+      || !expr_has_type (__builtin_stdc_first_leading_zero (0uwb), unsigned int)
+      || __builtin_stdc_first_leading_zero (1uwb) != 0
+      || !expr_has_type (__builtin_stdc_first_leading_zero (1uwb), unsigned int))
+    __builtin_abort ();
+  if (__builtin_stdc_first_leading_one (0uwb) != 0
+      || !expr_has_type (__builtin_stdc_first_leading_one (0uwb), unsigned int)
+      || __builtin_stdc_first_leading_one (1uwb) != 1
+      || !expr_has_type (__builtin_stdc_first_leading_one (1uwb), unsigned int))
+    __builtin_abort ();
+  if (__builtin_stdc_first_trailing_zero (0uwb) != 1
+      || !expr_has_type (__builtin_stdc_first_trailing_zero (0uwb), unsigned int)
+      || __builtin_stdc_first_trailing_zero (1uwb) != 0
+      || !expr_has_type (__builtin_stdc_first_trailing_zero (1uwb), unsigned int))
+    __builtin_abort ();
+  if (__builtin_stdc_first_trailing_one (0uwb) != 0
+      || !expr_has_type (__builtin_stdc_first_trailing_one (0uwb), unsigned int)
+      || __builtin_stdc_first_trailing_one (1uwb) != 1
+      || !expr_has_type (__builtin_stdc_first_trailing_one (1uwb), unsigned int))
+    __builtin_abort ();
+  if (__builtin_stdc_count_zeros (0uwb) != 1
+      || !expr_has_type (__builtin_stdc_count_zeros (0uwb), unsigned int)
+      || __builtin_stdc_count_zeros (1uwb) != 0
+      || !expr_has_type (__builtin_stdc_count_zeros (1uwb), unsigned int))
+    __builtin_abort ();
+  if (__builtin_stdc_count_ones (0uwb) != 0
+      || !expr_has_type (__builtin_stdc_count_ones (0uwb), unsigned int)
+      || __builtin_stdc_count_ones (1uwb) != 1
+      || !expr_has_type (__builtin_stdc_count_ones (1uwb), unsigned int))
+    __builtin_abort ();
+  if (__builtin_stdc_has_single_bit (0uwb)
+      || !expr_has_type (__builtin_stdc_has_single_bit (0uwb), _Bool)
+      || !__builtin_stdc_has_single_bit (1uwb)
+      || !expr_has_type (__builtin_stdc_has_single_bit (1uwb), _Bool))
+    __builtin_abort ();
+  if (__builtin_stdc_bit_width (0uwb) != 0
+      || !expr_has_type (__builtin_stdc_bit_width (0uwb), unsigned int)
+      || __builtin_stdc_bit_width (1uwb) != 1
+      || !expr_has_type (__builtin_stdc_bit_width (1uwb), unsigned int))
+    __builtin_abort ();
+  if (__builtin_stdc_bit_floor (0uwb) != 0
+      || !expr_has_type (__builtin_stdc_bit_floor (0uwb), unsigned _BitInt(1))
+      || __builtin_stdc_bit_floor (1uwb) != 1
+      || !expr_has_type (__builtin_stdc_bit_floor (1uwb), unsigned _BitInt(1)))
+    __builtin_abort ();
+  if (__builtin_stdc_bit_ceil (0uwb) != 1
+      || !expr_has_type (__builtin_stdc_bit_ceil (0uwb), unsigned _BitInt(1))
+      || __builtin_stdc_bit_ceil (1uwb) != 1
+      || !expr_has_type (__builtin_stdc_bit_ceil (1uwb), unsigned _BitInt(1)))
+    __builtin_abort ();
+  unsigned _BitInt(1) c = 0;
+  if (__builtin_stdc_bit_floor (c++) != 0 || c != 1)
+    __builtin_abort ();
+  if (__builtin_stdc_bit_floor (c++) != 1 || c != 0)
+    __builtin_abort ();
+  if (__builtin_stdc_bit_ceil (c++) != 1 || c != 1)
+    __builtin_abort ();
+  if (__builtin_stdc_bit_ceil (c++) != 1 || c != 0)
+    __builtin_abort ();
+#endif
+#if __BITINT_MAXWIDTH__ >= 512
+  if (__builtin_stdc_leading_zeros ((unsigned _BitInt(512)) 0) != 512
+      || !expr_has_type (__builtin_stdc_leading_zeros ((unsigned _BitInt(512)) 0), unsigned int)
+      || __builtin_stdc_leading_zeros ((unsigned _BitInt(373)) 0) != 373
+      || !expr_has_type (__builtin_stdc_leading_zeros ((unsigned _BitInt(373)) 0), unsigned int))
+    __builtin_abort ();
+  if (__builtin_stdc_leading_zeros (~(unsigned _BitInt(512)) 0) != 0
+      || __builtin_stdc_leading_zeros (~(unsigned _BitInt(373)) 0) != 0)
+    __builtin_abort ();
+  if (__builtin_stdc_leading_zeros ((unsigned _BitInt(512)) 275) != 512 - 9
+      || __builtin_stdc_leading_zeros ((unsigned _BitInt(373)) 512) != 373 - 10)
+    __builtin_abort ();
+  if (__builtin_stdc_leading_ones ((unsigned _BitInt(512)) 0) != 0
+      || !expr_has_type (__builtin_stdc_leading_ones ((unsigned _BitInt(512)) 0), unsigned int)
+      || __builtin_stdc_leading_ones ((unsigned _BitInt(373)) 0) != 0
+      || !expr_has_type (__builtin_stdc_leading_ones ((unsigned _BitInt(373)) 0), unsigned int))
+    __builtin_abort ();
+  if (__builtin_stdc_leading_ones (~(unsigned _BitInt(512)) 0) != 512
+      || __builtin_stdc_leading_ones (~(unsigned _BitInt(373)) 0) != 373)
+    __builtin_abort ();
+  if (__builtin_stdc_leading_ones (~(unsigned _BitInt(512)) 275) != 512 - 9
+      || __builtin_stdc_leading_ones (~(unsigned _BitInt(373)) 512) != 373 - 10)
+    __builtin_abort ();
+  if (__builtin_stdc_trailing_zeros ((unsigned _BitInt(512)) 0) != 512
+      || !expr_has_type (__builtin_stdc_trailing_zeros ((unsigned _BitInt(512)) 0), unsigned int)
+      || __builtin_stdc_trailing_zeros ((unsigned _BitInt(373)) 0) != 373
+      || !expr_has_type (__builtin_stdc_trailing_zeros ((unsigned _BitInt(373)) 0), unsigned int))
+    __builtin_abort ();
+  if (__builtin_stdc_trailing_zeros (~(unsigned _BitInt(512)) 0) != 0
+      || __builtin_stdc_trailing_zeros (~(unsigned _BitInt(373)) 0) != 0)
+    __builtin_abort ();
+  if (__builtin_stdc_trailing_zeros ((unsigned _BitInt(512)) 256) != 8
+      || __builtin_stdc_trailing_zeros ((unsigned _BitInt(373)) 512) != 9)
+    __builtin_abort ();
+  if (__builtin_stdc_trailing_ones ((unsigned _BitInt(512)) 0) != 0
+      || !expr_has_type (__builtin_stdc_trailing_ones ((unsigned _BitInt(512)) 0), unsigned int)
+      || __builtin_stdc_trailing_ones ((unsigned _BitInt(373)) 0) != 0
+      || !expr_has_type (__builtin_stdc_trailing_ones ((unsigned _BitInt(373)) 0), unsigned int))
+    __builtin_abort ();
+  if (__builtin_stdc_trailing_ones (~(unsigned _BitInt(512)) 0) != 512
+      || __builtin_stdc_trailing_ones (~(unsigned _BitInt(373)) 0) != 373)
+    __builtin_abort ();
+  if (__builtin_stdc_trailing_ones ((unsigned _BitInt(512)) 255) != 8
+      || __builtin_stdc_trailing_ones ((~(unsigned _BitInt(373)) 0) >> 2) != 373 - 2)
+    __builtin_abort ();
+  if (__builtin_stdc_first_leading_zero ((unsigned _BitInt(512)) 0) != 1
+      || !expr_has_type (__builtin_stdc_first_leading_zero ((unsigned _BitInt(512)) 0), unsigned int)
+      || __builtin_stdc_first_leading_zero ((unsigned _BitInt(373)) 0) != 1
+      || !expr_has_type (__builtin_stdc_first_leading_zero ((unsigned _BitInt(373)) 0), unsigned int))
+    __builtin_abort ();
+  if (__builtin_stdc_first_leading_zero (~(unsigned _BitInt(512)) 0) != 0
+      || __builtin_stdc_first_leading_zero (~(unsigned _BitInt(373)) 0) != 0)
+    __builtin_abort ();
+  if (__builtin_stdc_first_leading_zero (~(unsigned _BitInt(512)) 511) != 512 - 8
+      || __builtin_stdc_first_leading_zero (~(unsigned _BitInt(373)) 1023) != 373 - 9)
+    __builtin_abort ();
+  if (__builtin_stdc_first_leading_one ((unsigned _BitInt(512)) 0) != 0
+      || !expr_has_type (__builtin_stdc_first_leading_one ((unsigned _BitInt(512)) 0), unsigned int)
+      || __builtin_stdc_first_leading_one ((unsigned _BitInt(373)) 0) != 0
+      || !expr_has_type (__builtin_stdc_first_leading_one ((unsigned _BitInt(373)) 0), unsigned int))
+    __builtin_abort ();
+  if (__builtin_stdc_first_leading_one (~(unsigned _BitInt(512)) 0) != 1
+      || __builtin_stdc_first_leading_one (~(unsigned _BitInt(373)) 0) != 1)
+    __builtin_abort ();
+  if (__builtin_stdc_first_leading_one ((unsigned _BitInt(512)) 275) != 512 - 8
+      || __builtin_stdc_first_leading_one ((unsigned _BitInt(373)) 512) != 373 - 9)
+    __builtin_abort ();
+  if (__builtin_stdc_first_trailing_zero ((unsigned _BitInt(512)) 0) != 1
+      || !expr_has_type (__builtin_stdc_first_trailing_zero ((unsigned _BitInt(512)) 0), unsigned int)
+      || __builtin_stdc_first_trailing_zero ((unsigned _BitInt(373)) 0) != 1
+      || !expr_has_type (__builtin_stdc_first_trailing_zero ((unsigned _BitInt(373)) 0), unsigned int))
+    __builtin_abort ();
+  if (__builtin_stdc_first_trailing_zero (~(unsigned _BitInt(512)) 0) != 0
+      || __builtin_stdc_first_trailing_zero (~(unsigned _BitInt(373)) 0) != 0)
+    __builtin_abort ();
+  if (__builtin_stdc_first_trailing_zero ((unsigned _BitInt(512)) 255) != 9
+      || __builtin_stdc_first_trailing_zero ((unsigned _BitInt(373)) 511) != 10)
+    __builtin_abort ();
+  if (__builtin_stdc_first_trailing_one ((unsigned _BitInt(512)) 0) != 0
+      || !expr_has_type (__builtin_stdc_first_trailing_one ((unsigned _BitInt(512)) 0), unsigned int)
+      || __builtin_stdc_first_trailing_one ((unsigned _BitInt(373)) 0) != 0
+      || !expr_has_type (__builtin_stdc_first_trailing_one ((unsigned _BitInt(373)) 0), unsigned int))
+    __builtin_abort ();
+  if (__builtin_stdc_first_trailing_one (~(unsigned _BitInt(512)) 0) != 1
+      || __builtin_stdc_first_trailing_one (~(unsigned _BitInt(373)) 0) != 1)
+    __builtin_abort ();
+  if (__builtin_stdc_first_trailing_one (((unsigned _BitInt(512)) 255) << 175) != 176
+      || __builtin_stdc_first_trailing_one ((~(unsigned _BitInt(373)) 0) << 311) != 312)
+    __builtin_abort ();
+  if (__builtin_stdc_count_zeros ((unsigned _BitInt(512)) 0) != 512
+      || !expr_has_type (__builtin_stdc_count_zeros ((unsigned _BitInt(512)) 0), unsigned int)
+      || __builtin_stdc_count_zeros ((unsigned _BitInt(373)) 0) != 373
+      || !expr_has_type (__builtin_stdc_count_zeros ((unsigned _BitInt(373)) 0), unsigned int))
+    __builtin_abort ();
+  if (__builtin_stdc_count_zeros (~(unsigned _BitInt(512)) 0) != 0
+      || __builtin_stdc_count_zeros (~(unsigned _BitInt(373)) 0) != 0)
+    __builtin_abort ();
+  if (__builtin_stdc_count_zeros ((unsigned _BitInt(512)) 1315) != 512 - 5
+      || __builtin_stdc_count_zeros ((unsigned _BitInt(373)) 3363) != 373 - 6)
+    __builtin_abort ();
+  if (__builtin_stdc_count_ones ((unsigned _BitInt(512)) 0) != 0
+      || !expr_has_type (__builtin_stdc_count_ones ((unsigned _BitInt(512)) 0), unsigned int)
+      || __builtin_stdc_count_ones ((unsigned _BitInt(373)) 0) != 0
+      || !expr_has_type (__builtin_stdc_count_ones ((unsigned _BitInt(373)) 0), unsigned int))
+    __builtin_abort ();
+  if (__builtin_stdc_count_ones (~(unsigned _BitInt(512)) 0) != 512
+      || __builtin_stdc_count_ones (~(unsigned _BitInt(373)) 0) != 373)
+    __builtin_abort ();
+  if (__builtin_stdc_count_ones (~(unsigned _BitInt(512)) 1315) != 512 - 5
+      || __builtin_stdc_count_ones (~(unsigned _BitInt(373)) 3363) != 373 - 6)
+    __builtin_abort ();
+  if (__builtin_stdc_has_single_bit ((unsigned _BitInt(512)) 0)
+      || !expr_has_type (__builtin_stdc_has_single_bit ((unsigned _BitInt(512)) 0), _Bool)
+      || __builtin_stdc_has_single_bit ((unsigned _BitInt(373)) 0)
+      || !expr_has_type (__builtin_stdc_has_single_bit ((unsigned _BitInt(373)) 0), _Bool))
+    __builtin_abort ();
+  if (__builtin_stdc_has_single_bit (~(unsigned _BitInt(512)) 0)
+      || __builtin_stdc_has_single_bit (~(unsigned _BitInt(373)) 0))
+    __builtin_abort ();
+  if (__builtin_stdc_has_single_bit (((unsigned _BitInt(512)) 1022) << 279)
+      || __builtin_stdc_has_single_bit (((unsigned _BitInt(373)) 12) << 305))
+    __builtin_abort ();
+  if (__builtin_stdc_bit_width ((unsigned _BitInt(512)) 0) != 0
+      || !expr_has_type (__builtin_stdc_bit_width ((unsigned _BitInt(512)) 0), unsigned int)
+      || __builtin_stdc_bit_width ((unsigned _BitInt(373)) 0) != 0
+      || !expr_has_type (__builtin_stdc_bit_width ((unsigned _BitInt(373)) 0), unsigned int))
+    __builtin_abort ();
+  if (__builtin_stdc_bit_width (~(unsigned _BitInt(512)) 0) != 512
+      || __builtin_stdc_bit_width (~(unsigned _BitInt(373)) 0) != 373)
+    __builtin_abort ();
+  if (__builtin_stdc_bit_width (((unsigned _BitInt(512)) 1023) << 405) != 405 + 10
+      || __builtin_stdc_bit_width (((unsigned _BitInt(373)) 1024) << 242) != 242 + 11)
+    __builtin_abort ();
+  if (__builtin_stdc_bit_floor ((unsigned _BitInt(512)) 0) != 0
+      || !expr_has_type (__builtin_stdc_bit_floor ((unsigned _BitInt(512)) 0), unsigned _BitInt(512))
+      || __builtin_stdc_bit_floor ((unsigned _BitInt(373)) 0) != 0
+      || !expr_has_type (__builtin_stdc_bit_floor ((unsigned _BitInt(373)) 0), unsigned _BitInt(373)))
+    __builtin_abort ();
+  if (__builtin_stdc_bit_floor (~(unsigned _BitInt(512)) 0) != ((unsigned _BitInt(512)) 1) << (512 - 1)
+      || __builtin_stdc_bit_floor (~(unsigned _BitInt(373)) 0) != ((unsigned _BitInt(373)) 1) << (373 - 1))
+    __builtin_abort ();
+  if (__builtin_stdc_bit_floor (((unsigned _BitInt(512)) 511) << 405) != (((unsigned _BitInt(512)) 256) << 405)
+      || __builtin_stdc_bit_floor (((unsigned _BitInt(373)) 512) << 242) != (((unsigned _BitInt(512)) 512) << 242))
+    __builtin_abort ();
+  if (__builtin_stdc_bit_ceil ((unsigned _BitInt(512)) 0) != 1
+      || !expr_has_type (__builtin_stdc_bit_ceil ((unsigned _BitInt(512)) 0), unsigned _BitInt(512))
+      || __builtin_stdc_bit_ceil ((unsigned _BitInt(373)) 0) != 1
+      || !expr_has_type (__builtin_stdc_bit_ceil ((unsigned _BitInt(373)) 0), unsigned _BitInt(373)))
+    __builtin_abort ();
+  if (__builtin_stdc_bit_ceil (~(unsigned _BitInt(512)) 0) != 0
+      || __builtin_stdc_bit_ceil (~(unsigned _BitInt(373)) 0) != 0)
+    __builtin_abort ();
+  if (__builtin_stdc_bit_ceil (((unsigned _BitInt(512)) 1) << (512 - 1)) != ((unsigned _BitInt(512)) 1) << (512 - 1)
+      || __builtin_stdc_bit_ceil ((~(unsigned _BitInt(373)) 0) >> 1) != ((unsigned _BitInt(373)) 1) << (373 - 1))
+    __builtin_abort ();
+  if (__builtin_stdc_bit_ceil (((unsigned _BitInt(512)) 512) << 405) != (((unsigned _BitInt(512)) 512) << 405)
+      || __builtin_stdc_bit_ceil (((unsigned _BitInt(373)) 513) << 242) != (((unsigned _BitInt(512)) 1024) << 242))
+    __builtin_abort ();
+  if (__builtin_stdc_bit_floor ((unsigned _BitInt(__BITINT_MAXWIDTH__)) 0) != 0)
+    __builtin_abort ();
+  if (__builtin_stdc_bit_floor (~(unsigned _BitInt(__BITINT_MAXWIDTH__)) 0) != ((unsigned _BitInt(__BITINT_MAXWIDTH__)) 1) << (__BITINT_MAXWIDTH__ - 1))
+    __builtin_abort ();
+  if (__builtin_stdc_bit_floor (((unsigned _BitInt(__BITINT_MAXWIDTH__)) 511) << 405) != (((unsigned _BitInt(__BITINT_MAXWIDTH__)) 256) << 405)
+      || __builtin_stdc_bit_floor (((unsigned _BitInt(__BITINT_MAXWIDTH__)) 512) << 405) != (((unsigned _BitInt(__BITINT_MAXWIDTH__)) 512) << 405))
+    __builtin_abort ();
+  if (__builtin_stdc_bit_ceil ((unsigned _BitInt(__BITINT_MAXWIDTH__)) 0) != 1)
+    __builtin_abort ();
+  if (__builtin_stdc_bit_ceil (~(unsigned _BitInt(__BITINT_MAXWIDTH__)) 0) != 0)
+    __builtin_abort ();
+  if (__builtin_stdc_bit_ceil (((unsigned _BitInt(__BITINT_MAXWIDTH__)) 1) << (__BITINT_MAXWIDTH__ - 1)) != ((unsigned _BitInt(__BITINT_MAXWIDTH__)) 1) << (__BITINT_MAXWIDTH__ - 1))
+    __builtin_abort ();
+  if (__builtin_stdc_bit_ceil (((unsigned _BitInt(__BITINT_MAXWIDTH__)) 512) << 405) != (((unsigned _BitInt(__BITINT_MAXWIDTH__)) 512) << 405)
+      || __builtin_stdc_bit_ceil (((unsigned _BitInt(__BITINT_MAXWIDTH__)) 513) << 405) != (((unsigned _BitInt(__BITINT_MAXWIDTH__)) 1024) << 405))
+    __builtin_abort ();
+#endif
+}
diff --git a/gcc/testsuite/gcc.dg/builtin-stdc-bit-2.c b/gcc/testsuite/gcc.dg/builtin-stdc-bit-2.c
new file mode 100644
index 0000000..1997753
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/builtin-stdc-bit-2.c
@@ -0,0 +1,150 @@
+/* { dg-do compile } */
+/* { dg-options "" } */
+
+void
+foo (void)
+{
+  typedef int V __attribute__ ((vector_size (4 * sizeof (int))));
+  struct S { int s; };
+  enum E { E0, E1 };
+  __builtin_stdc_leading_zeros (0.0f);	/* { dg-error "'__builtin_stdc_leading_zeros' operand not an integral type" } */
+  __builtin_stdc_leading_zeros (0.0);	/* { dg-error "'__builtin_stdc_leading_zeros' operand not an integral type" } */
+  __builtin_stdc_leading_zeros (0.0L);	/* { dg-error "'__builtin_stdc_leading_zeros' operand not an integral type" } */
+  __builtin_stdc_leading_zeros ((V) {});	/* { dg-error "'__builtin_stdc_leading_zeros' operand not an integral type" } */
+  __builtin_stdc_leading_zeros ((struct S) { 0 });	/* { dg-error "'__builtin_stdc_leading_zeros' operand not an integral type" } */
+  __builtin_stdc_leading_zeros ();		/* { dg-error "wrong number of arguments to '__builtin_stdc_leading_zeros'" } */
+  __builtin_stdc_leading_zeros (0U, 0U);	/* { dg-error "wrong number of arguments to '__builtin_stdc_leading_zeros'" } */
+  __builtin_stdc_leading_zeros ((_Bool) 0);	/* { dg-error "argument 1 in call to function '__builtin_clzg' has boolean type" } */
+  __builtin_stdc_leading_zeros ((enum E) E0);	/* { dg-error "argument 1 in call to function '__builtin_clzg' has enumerated type" } */
+  __builtin_stdc_leading_zeros (0);		/* { dg-error "argument 1 in call to function '__builtin_clzg' has signed type" } */
+  __builtin_stdc_leading_ones (0.0f);	/* { dg-error "'__builtin_stdc_leading_ones' operand not an integral type" } */
+  __builtin_stdc_leading_ones (0.0);	/* { dg-error "'__builtin_stdc_leading_ones' operand not an integral type" } */
+  __builtin_stdc_leading_ones (0.0L);	/* { dg-error "'__builtin_stdc_leading_ones' operand not an integral type" } */
+  __builtin_stdc_leading_ones ((V) {});	/* { dg-error "'__builtin_stdc_leading_ones' operand not an integral type" } */
+  __builtin_stdc_leading_ones ((struct S) { 0 });	/* { dg-error "'__builtin_stdc_leading_ones' operand not an integral type" } */
+  __builtin_stdc_leading_ones ();		/* { dg-error "wrong number of arguments to '__builtin_stdc_leading_ones'" } */
+  __builtin_stdc_leading_ones (0U, 0U);	/* { dg-error "wrong number of arguments to '__builtin_stdc_leading_ones'" } */
+  __builtin_stdc_leading_ones ((_Bool) 0);	/* { dg-error "argument 1 in call to function '__builtin_clzg' has boolean type" } */
+  __builtin_stdc_leading_ones ((enum E) E0);	/* { dg-error "argument 1 in call to function '__builtin_clzg' has enumerated type" } */
+  __builtin_stdc_leading_ones (0);		/* { dg-error "argument 1 in call to function '__builtin_clzg' has signed type" } */
+  __builtin_stdc_trailing_zeros (0.0f);	/* { dg-error "'__builtin_stdc_trailing_zeros' operand not an integral type" } */
+  __builtin_stdc_trailing_zeros (0.0);	/* { dg-error "'__builtin_stdc_trailing_zeros' operand not an integral type" } */
+  __builtin_stdc_trailing_zeros (0.0L);	/* { dg-error "'__builtin_stdc_trailing_zeros' operand not an integral type" } */
+  __builtin_stdc_trailing_zeros ((V) {});	/* { dg-error "'__builtin_stdc_trailing_zeros' operand not an integral type" } */
+  __builtin_stdc_trailing_zeros ((struct S) { 0 });	/* { dg-error "'__builtin_stdc_trailing_zeros' operand not an integral type" } */
+  __builtin_stdc_trailing_zeros ();		/* { dg-error "wrong number of arguments to '__builtin_stdc_trailing_zeros'" } */
+  __builtin_stdc_trailing_zeros (0U, 0U);	/* { dg-error "wrong number of arguments to '__builtin_stdc_trailing_zeros'" } */
+  __builtin_stdc_trailing_zeros ((_Bool) 0);	/* { dg-error "argument 1 in call to function '__builtin_ctzg' has boolean type" } */
+  __builtin_stdc_trailing_zeros ((enum E) E0);	/* { dg-error "argument 1 in call to function '__builtin_ctzg' has enumerated type" } */
+  __builtin_stdc_trailing_zeros (0);		/* { dg-error "argument 1 in call to function '__builtin_ctzg' has signed type" } */
+  __builtin_stdc_trailing_ones (0.0f);	/* { dg-error "'__builtin_stdc_trailing_ones' operand not an integral type" } */
+  __builtin_stdc_trailing_ones (0.0);	/* { dg-error "'__builtin_stdc_trailing_ones' operand not an integral type" } */
+  __builtin_stdc_trailing_ones (0.0L);	/* { dg-error "'__builtin_stdc_trailing_ones' operand not an integral type" } */
+  __builtin_stdc_trailing_ones ((V) {});	/* { dg-error "'__builtin_stdc_trailing_ones' operand not an integral type" } */
+  __builtin_stdc_trailing_ones ((struct S) { 0 });	/* { dg-error "'__builtin_stdc_trailing_ones' operand not an integral type" } */
+  __builtin_stdc_trailing_ones ();		/* { dg-error "wrong number of arguments to '__builtin_stdc_trailing_ones'" } */
+  __builtin_stdc_trailing_ones (0U, 0U);	/* { dg-error "wrong number of arguments to '__builtin_stdc_trailing_ones'" } */
+  __builtin_stdc_trailing_ones ((_Bool) 0);	/* { dg-error "argument 1 in call to function '__builtin_ctzg' has boolean type" } */
+  __builtin_stdc_trailing_ones ((enum E) E0);	/* { dg-error "argument 1 in call to function '__builtin_ctzg' has enumerated type" } */
+  __builtin_stdc_trailing_ones (0);		/* { dg-error "argument 1 in call to function '__builtin_ctzg' has signed type" } */
+  __builtin_stdc_first_leading_zero (0.0f);	/* { dg-error "'__builtin_stdc_first_leading_zero' operand not an integral type" } */
+  __builtin_stdc_first_leading_zero (0.0);	/* { dg-error "'__builtin_stdc_first_leading_zero' operand not an integral type" } */
+  __builtin_stdc_first_leading_zero (0.0L);	/* { dg-error "'__builtin_stdc_first_leading_zero' operand not an integral type" } */
+  __builtin_stdc_first_leading_zero ((V) {});	/* { dg-error "'__builtin_stdc_first_leading_zero' operand not an integral type" } */
+  __builtin_stdc_first_leading_zero ((struct S) { 0 });	/* { dg-error "'__builtin_stdc_first_leading_zero' operand not an integral type" } */
+  __builtin_stdc_first_leading_zero ();		/* { dg-error "wrong number of arguments to '__builtin_stdc_first_leading_zero'" } */
+  __builtin_stdc_first_leading_zero (0U, 0U);	/* { dg-error "wrong number of arguments to '__builtin_stdc_first_leading_zero'" } */
+  __builtin_stdc_first_leading_zero ((_Bool) 0);	/* { dg-error "argument 1 in call to function '__builtin_clzg' has boolean type" } */
+  __builtin_stdc_first_leading_zero ((enum E) E0);	/* { dg-error "argument 1 in call to function '__builtin_clzg' has enumerated type" } */
+  __builtin_stdc_first_leading_zero (0);		/* { dg-error "argument 1 in call to function '__builtin_clzg' has signed type" } */
+  __builtin_stdc_first_leading_one (0.0f);	/* { dg-error "'__builtin_stdc_first_leading_one' operand not an integral type" } */
+  __builtin_stdc_first_leading_one (0.0);	/* { dg-error "'__builtin_stdc_first_leading_one' operand not an integral type" } */
+  __builtin_stdc_first_leading_one (0.0L);	/* { dg-error "'__builtin_stdc_first_leading_one' operand not an integral type" } */
+  __builtin_stdc_first_leading_one ((V) {});	/* { dg-error "'__builtin_stdc_first_leading_one' operand not an integral type" } */
+  __builtin_stdc_first_leading_one ((struct S) { 0 });	/* { dg-error "'__builtin_stdc_first_leading_one' operand not an integral type" } */
+  __builtin_stdc_first_leading_one ();		/* { dg-error "wrong number of arguments to '__builtin_stdc_first_leading_one'" } */
+  __builtin_stdc_first_leading_one (0U, 0U);	/* { dg-error "wrong number of arguments to '__builtin_stdc_first_leading_one'" } */
+  __builtin_stdc_first_leading_one ((_Bool) 0);	/* { dg-error "argument 1 in call to function '__builtin_clzg' has boolean type" } */
+  __builtin_stdc_first_leading_one ((enum E) E0);	/* { dg-error "argument 1 in call to function '__builtin_clzg' has enumerated type" } */
+  __builtin_stdc_first_leading_one (0);		/* { dg-error "argument 1 in call to function '__builtin_clzg' has signed type" } */
+  __builtin_stdc_first_trailing_zero (0.0f);	/* { dg-error "'__builtin_stdc_first_trailing_zero' operand not an integral type" } */
+  __builtin_stdc_first_trailing_zero (0.0);	/* { dg-error "'__builtin_stdc_first_trailing_zero' operand not an integral type" } */
+  __builtin_stdc_first_trailing_zero (0.0L);	/* { dg-error "'__builtin_stdc_first_trailing_zero' operand not an integral type" } */
+  __builtin_stdc_first_trailing_zero ((V) {});	/* { dg-error "'__builtin_stdc_first_trailing_zero' operand not an integral type" } */
+  __builtin_stdc_first_trailing_zero ((struct S) { 0 });	/* { dg-error "'__builtin_stdc_first_trailing_zero' operand not an integral type" } */
+  __builtin_stdc_first_trailing_zero ();		/* { dg-error "wrong number of arguments to '__builtin_stdc_first_trailing_zero'" } */
+  __builtin_stdc_first_trailing_zero (0U, 0U);	/* { dg-error "wrong number of arguments to '__builtin_stdc_first_trailing_zero'" } */
+  __builtin_stdc_first_trailing_zero ((_Bool) 0);	/* { dg-error "argument 1 in call to function '__builtin_ctzg' has boolean type" } */
+  __builtin_stdc_first_trailing_zero ((enum E) E0);	/* { dg-error "argument 1 in call to function '__builtin_ctzg' has enumerated type" } */
+  __builtin_stdc_first_trailing_zero (0);		/* { dg-error "argument 1 in call to function '__builtin_ctzg' has signed type" } */
+  __builtin_stdc_first_trailing_one (0.0f);	/* { dg-error "'__builtin_stdc_first_trailing_one' operand not an integral type" } */
+  __builtin_stdc_first_trailing_one (0.0);	/* { dg-error "'__builtin_stdc_first_trailing_one' operand not an integral type" } */
+  __builtin_stdc_first_trailing_one (0.0L);	/* { dg-error "'__builtin_stdc_first_trailing_one' operand not an integral type" } */
+  __builtin_stdc_first_trailing_one ((V) {});	/* { dg-error "'__builtin_stdc_first_trailing_one' operand not an integral type" } */
+  __builtin_stdc_first_trailing_one ((struct S) { 0 });	/* { dg-error "'__builtin_stdc_first_trailing_one' operand not an integral type" } */
+  __builtin_stdc_first_trailing_one ();		/* { dg-error "wrong number of arguments to '__builtin_stdc_first_trailing_one'" } */
+  __builtin_stdc_first_trailing_one (0U, 0U);	/* { dg-error "wrong number of arguments to '__builtin_stdc_first_trailing_one'" } */
+  __builtin_stdc_first_trailing_one ((_Bool) 0);	/* { dg-error "argument 1 in call to function '__builtin_ctzg' has boolean type" } */
+  __builtin_stdc_first_trailing_one ((enum E) E0);	/* { dg-error "argument 1 in call to function '__builtin_ctzg' has enumerated type" } */
+  __builtin_stdc_first_trailing_one (0);		/* { dg-error "argument 1 in call to function '__builtin_ctzg' has signed type" } */
+  __builtin_stdc_count_zeros (0.0f);	/* { dg-error "'__builtin_stdc_count_zeros' operand not an integral type" } */
+  __builtin_stdc_count_zeros (0.0);	/* { dg-error "'__builtin_stdc_count_zeros' operand not an integral type" } */
+  __builtin_stdc_count_zeros (0.0L);	/* { dg-error "'__builtin_stdc_count_zeros' operand not an integral type" } */
+  __builtin_stdc_count_zeros ((V) {});	/* { dg-error "'__builtin_stdc_count_zeros' operand not an integral type" } */
+  __builtin_stdc_count_zeros ((struct S) { 0 });	/* { dg-error "'__builtin_stdc_count_zeros' operand not an integral type" } */
+  __builtin_stdc_count_zeros ();		/* { dg-error "wrong number of arguments to '__builtin_stdc_count_zeros'" } */
+  __builtin_stdc_count_zeros (0U, 0U);	/* { dg-error "wrong number of arguments to '__builtin_stdc_count_zeros'" } */
+  __builtin_stdc_count_zeros ((_Bool) 0);	/* { dg-error "argument 1 in call to function '__builtin_popcountg' has boolean type" } */
+  __builtin_stdc_count_zeros ((enum E) E0);	/* { dg-error "argument 1 in call to function '__builtin_popcountg' has enumerated type" } */
+  __builtin_stdc_count_zeros (0);		/* { dg-error "argument 1 in call to function '__builtin_popcountg' has signed type" } */
+  __builtin_stdc_count_ones (0.0f);	/* { dg-error "'__builtin_stdc_count_ones' operand not an integral type" } */
+  __builtin_stdc_count_ones (0.0);	/* { dg-error "'__builtin_stdc_count_ones' operand not an integral type" } */
+  __builtin_stdc_count_ones (0.0L);	/* { dg-error "'__builtin_stdc_count_ones' operand not an integral type" } */
+  __builtin_stdc_count_ones ((V) {});	/* { dg-error "'__builtin_stdc_count_ones' operand not an integral type" } */
+  __builtin_stdc_count_ones ((struct S) { 0 });	/* { dg-error "'__builtin_stdc_count_ones' operand not an integral type" } */
+  __builtin_stdc_count_ones ();		/* { dg-error "wrong number of arguments to '__builtin_stdc_count_ones'" } */
+  __builtin_stdc_count_ones (0U, 0U);	/* { dg-error "wrong number of arguments to '__builtin_stdc_count_ones'" } */
+  __builtin_stdc_count_ones ((_Bool) 0);	/* { dg-error "argument 1 in call to function '__builtin_popcountg' has boolean type" } */
+  __builtin_stdc_count_ones ((enum E) E0);	/* { dg-error "argument 1 in call to function '__builtin_popcountg' has enumerated type" } */
+  __builtin_stdc_count_ones (0);		/* { dg-error "argument 1 in call to function '__builtin_popcountg' has signed type" } */
+  __builtin_stdc_has_single_bit (0.0f);	/* { dg-error "'__builtin_stdc_has_single_bit' operand not an integral type" } */
+  __builtin_stdc_has_single_bit (0.0);	/* { dg-error "'__builtin_stdc_has_single_bit' operand not an integral type" } */
+  __builtin_stdc_has_single_bit (0.0L);	/* { dg-error "'__builtin_stdc_has_single_bit' operand not an integral type" } */
+  __builtin_stdc_has_single_bit ((V) {});	/* { dg-error "'__builtin_stdc_has_single_bit' operand not an integral type" } */
+  __builtin_stdc_has_single_bit ((struct S) { 0 });	/* { dg-error "'__builtin_stdc_has_single_bit' operand not an integral type" } */
+  __builtin_stdc_has_single_bit ();		/* { dg-error "wrong number of arguments to '__builtin_stdc_has_single_bit'" } */
+  __builtin_stdc_has_single_bit (0U, 0U);	/* { dg-error "wrong number of arguments to '__builtin_stdc_has_single_bit'" } */
+  __builtin_stdc_has_single_bit ((_Bool) 0);	/* { dg-error "argument 1 in call to function '__builtin_popcountg' has boolean type" } */
+  __builtin_stdc_has_single_bit ((enum E) E0);	/* { dg-error "argument 1 in call to function '__builtin_popcountg' has enumerated type" } */
+  __builtin_stdc_has_single_bit (0);		/* { dg-error "argument 1 in call to function '__builtin_popcountg' has signed type" } */
+  __builtin_stdc_bit_width (0.0f);	/* { dg-error "'__builtin_stdc_bit_width' operand not an integral type" } */
+  __builtin_stdc_bit_width (0.0);	/* { dg-error "'__builtin_stdc_bit_width' operand not an integral type" } */
+  __builtin_stdc_bit_width (0.0L);	/* { dg-error "'__builtin_stdc_bit_width' operand not an integral type" } */
+  __builtin_stdc_bit_width ((V) {});	/* { dg-error "'__builtin_stdc_bit_width' operand not an integral type" } */
+  __builtin_stdc_bit_width ((struct S) { 0 });	/* { dg-error "'__builtin_stdc_bit_width' operand not an integral type" } */
+  __builtin_stdc_bit_width ();		/* { dg-error "wrong number of arguments to '__builtin_stdc_bit_width'" } */
+  __builtin_stdc_bit_width (0U, 0U);	/* { dg-error "wrong number of arguments to '__builtin_stdc_bit_width'" } */
+  __builtin_stdc_bit_width ((_Bool) 0);	/* { dg-error "argument 1 in call to function '__builtin_clzg' has boolean type" } */
+  __builtin_stdc_bit_width ((enum E) E0);	/* { dg-error "argument 1 in call to function '__builtin_clzg' has enumerated type" } */
+  __builtin_stdc_bit_width (0);		/* { dg-error "argument 1 in call to function '__builtin_clzg' has signed type" } */
+  __builtin_stdc_bit_floor (0.0f);	/* { dg-error "'__builtin_stdc_bit_floor' operand not an integral type" } */
+  __builtin_stdc_bit_floor (0.0);	/* { dg-error "'__builtin_stdc_bit_floor' operand not an integral type" } */
+  __builtin_stdc_bit_floor (0.0L);	/* { dg-error "'__builtin_stdc_bit_floor' operand not an integral type" } */
+  __builtin_stdc_bit_floor ((V) {});	/* { dg-error "'__builtin_stdc_bit_floor' operand not an integral type" } */
+  __builtin_stdc_bit_floor ((struct S) { 0 });	/* { dg-error "'__builtin_stdc_bit_floor' operand not an integral type" } */
+  __builtin_stdc_bit_floor ();		/* { dg-error "wrong number of arguments to '__builtin_stdc_bit_floor'" } */
+  __builtin_stdc_bit_floor (0U, 0U);	/* { dg-error "wrong number of arguments to '__builtin_stdc_bit_floor'" } */
+  __builtin_stdc_bit_floor ((_Bool) 0);	/* { dg-error "argument 1 in call to function '__builtin_clzg' has boolean type" } */
+  __builtin_stdc_bit_floor ((enum E) E0);	/* { dg-error "argument 1 in call to function '__builtin_clzg' has enumerated type" } */
+  __builtin_stdc_bit_floor (0);		/* { dg-error "argument 1 in call to function '__builtin_clzg' has signed type" } */
+  __builtin_stdc_bit_ceil (0.0f);	/* { dg-error "'__builtin_stdc_bit_ceil' operand not an integral type" } */
+  __builtin_stdc_bit_ceil (0.0);	/* { dg-error "'__builtin_stdc_bit_ceil' operand not an integral type" } */
+  __builtin_stdc_bit_ceil (0.0L);	/* { dg-error "'__builtin_stdc_bit_ceil' operand not an integral type" } */
+  __builtin_stdc_bit_ceil ((V) {});	/* { dg-error "'__builtin_stdc_bit_ceil' operand not an integral type" } */
+  __builtin_stdc_bit_ceil ((struct S) { 0 });	/* { dg-error "'__builtin_stdc_bit_ceil' operand not an integral type" } */
+  __builtin_stdc_bit_ceil ();		/* { dg-error "wrong number of arguments to '__builtin_stdc_bit_ceil'" } */
+  __builtin_stdc_bit_ceil (0U, 0U);	/* { dg-error "wrong number of arguments to '__builtin_stdc_bit_ceil'" } */
+  __builtin_stdc_bit_ceil ((_Bool) 0);	/* { dg-error "argument 1 in call to function '__builtin_clzg' has boolean type" } */
+  __builtin_stdc_bit_ceil ((enum E) E0);	/* { dg-error "argument 1 in call to function '__builtin_clzg' has enumerated type" } */
+  __builtin_stdc_bit_ceil (0);		/* { dg-error "argument 1 in call to function '__builtin_clzg' has signed type" } */
+}