static rtx expand_builtin_mathfn_2 (tree, rtx, rtx);
static rtx expand_builtin_mathfn_3 (tree, rtx, rtx);
static rtx expand_builtin_args_info (tree);
-static rtx expand_builtin_next_arg (tree);
+static rtx expand_builtin_next_arg (void);
static rtx expand_builtin_va_start (tree);
static rtx expand_builtin_va_end (tree);
static rtx expand_builtin_va_copy (tree);
static rtx expand_builtin_strcmp (tree, rtx, enum machine_mode);
static rtx expand_builtin_strncmp (tree, rtx, enum machine_mode);
static rtx builtin_memcpy_read_str (void *, HOST_WIDE_INT, enum machine_mode);
-static rtx expand_builtin_strcat (tree, rtx, enum machine_mode);
+static rtx expand_builtin_strcat (tree, tree, rtx, enum machine_mode);
static rtx expand_builtin_strncat (tree, rtx, enum machine_mode);
static rtx expand_builtin_strspn (tree, rtx, enum machine_mode);
static rtx expand_builtin_strcspn (tree, rtx, enum machine_mode);
static rtx expand_builtin_memcpy (tree, rtx, enum machine_mode);
-static rtx expand_builtin_mempcpy (tree, rtx, enum machine_mode, int);
+static rtx expand_builtin_mempcpy (tree, tree, rtx, enum machine_mode, int);
static rtx expand_builtin_memmove (tree, tree, rtx, enum machine_mode);
static rtx expand_builtin_bcopy (tree, tree);
static rtx expand_builtin_strcpy (tree, rtx, enum machine_mode);
static tree fold_builtin_round (tree);
static tree fold_builtin_bitop (tree);
static tree fold_builtin_memcpy (tree);
-static tree fold_builtin_mempcpy (tree);
+static tree fold_builtin_mempcpy (tree, tree, int);
static tree fold_builtin_memmove (tree, tree);
static tree fold_builtin_strchr (tree);
static tree fold_builtin_memcmp (tree);
static tree fold_builtin_strncat (tree);
static tree fold_builtin_strspn (tree);
static tree fold_builtin_strcspn (tree);
-static void fold_builtin_next_arg (tree);
static tree fold_builtin_sprintf (tree, int);
times to get the address of either a higher stack frame, or a return
address located within it (depending on FNDECL_CODE). */
-rtx
+static rtx
expand_builtin_return_addr (enum built_in_function fndecl_code, int count,
rtx tem)
{
scheme in the compiler and will only work in the method used by
them. */
-void
+static void
expand_builtin_longjmp (rtx buf_addr, rtx value)
{
rtx fp, lab, stack, insn, last;
longer copying around a value that we don't care about. */
gcc_assert (value == const1_rtx);
- current_function_calls_longjmp = 1;
-
last = get_last_insn ();
#ifdef HAVE_builtin_longjmp
if (HAVE_builtin_longjmp)
/* Argument 1 (read/write flag) must be a compile-time constant int. */
if (TREE_CODE (arg1) != INTEGER_CST)
{
- error ("second arg to %<__builtin_prefetch%> must be a constant");
+ error ("second argument to %<__builtin_prefetch%> must be a constant");
arg1 = integer_zero_node;
}
op1 = expand_expr (arg1, NULL_RTX, VOIDmode, 0);
/* Argument 1 must be either zero or one. */
if (INTVAL (op1) != 0 && INTVAL (op1) != 1)
{
- warning ("invalid second arg to __builtin_prefetch; using zero");
+ warning ("invalid second argument to %<__builtin_prefetch%>;"
+ " using zero");
op1 = const0_rtx;
}
/* Argument 2 (locality) must be a compile-time constant int. */
if (TREE_CODE (arg2) != INTEGER_CST)
{
- error ("third arg to %<__builtin_prefetch%> must be a constant");
+ error ("third argument to %<__builtin_prefetch%> must be a constant");
arg2 = integer_zero_node;
}
op2 = expand_expr (arg2, NULL_RTX, VOIDmode, 0);
/* Argument 2 must be 0, 1, 2, or 3. */
if (INTVAL (op2) < 0 || INTVAL (op2) > 3)
{
- warning ("invalid third arg to __builtin_prefetch; using zero");
+ warning ("invalid third argument to %<__builtin_prefetch%>; using zero");
op2 = const0_rtx;
}
case QUAL_UNION_TYPE: return union_type_class;
case ARRAY_TYPE: return (TYPE_STRING_FLAG (type)
? string_type_class : array_type_class);
- case SET_TYPE: return set_type_class;
case FILE_TYPE: return file_type_class;
case LANG_TYPE: return lang_type_class;
default: return no_type_class;
narg = builtin_save_expr (arg);
if (narg != arg)
{
+ arg = narg;
arglist = build_tree_list (NULL_TREE, arg);
exp = build_function_call_expr (fndecl, arglist);
}
narg = builtin_save_expr (arg1);
if (narg != arg1)
{
+ arg1 = narg;
temp = build_tree_list (NULL_TREE, narg);
stable = false;
}
narg = builtin_save_expr (arg0);
if (narg != arg0)
{
+ arg0 = narg;
arglist = tree_cons (NULL_TREE, narg, temp);
stable = false;
}
narg = save_expr (arg);
if (narg != arg)
{
+ arg = narg;
arglist = build_tree_list (NULL_TREE, arg);
exp = build_function_call_expr (fndecl, arglist);
}
stpcpy. */
static rtx
-expand_builtin_mempcpy (tree arglist, rtx target, enum machine_mode mode,
+expand_builtin_mempcpy (tree arglist, tree type, rtx target, enum machine_mode mode,
int endp)
{
if (!validate_arglist (arglist,
unsigned int dest_align
= get_pointer_alignment (dest, BIGGEST_ALIGNMENT);
rtx dest_mem, src_mem, len_rtx;
+ tree result = fold_builtin_mempcpy (arglist, type, endp);
- /* If DEST is not a pointer type, call the normal function. */
- if (dest_align == 0)
+ if (result)
+ return expand_expr (result, target, mode, EXPAND_NORMAL);
+
+ /* If either SRC or DEST is not a pointer type, don't do this
+ operation in-line. */
+ if (dest_align == 0 || src_align == 0)
return 0;
- /* If SRC and DEST are the same (and not volatile), do nothing. */
- if (operand_equal_p (src, dest, 0))
- {
- tree expr;
-
- if (endp == 0)
- {
- /* Evaluate and ignore LEN in case it has side-effects. */
- expand_expr (len, const0_rtx, VOIDmode, EXPAND_NORMAL);
- return expand_expr (dest, target, mode, EXPAND_NORMAL);
- }
-
- if (endp == 2)
- len = fold (build2 (MINUS_EXPR, TREE_TYPE (len), len,
- integer_one_node));
- len = fold_convert (TREE_TYPE (dest), len);
- expr = fold (build2 (PLUS_EXPR, TREE_TYPE (dest), dest, len));
- return expand_expr (expr, target, mode, EXPAND_NORMAL);
- }
-
/* If LEN is not constant, call the normal function. */
if (! host_integerp (len, 1))
return 0;
- /* If the LEN parameter is zero, return DEST. */
- if (tree_low_cst (len, 1) == 0)
- {
- /* Evaluate and ignore SRC in case it has side-effects. */
- expand_expr (src, const0_rtx, VOIDmode, EXPAND_NORMAL);
- return expand_expr (dest, target, mode, EXPAND_NORMAL);
- }
-
- /* If either SRC is not a pointer type, don't do this
- operation in-line. */
- if (src_align == 0)
- return 0;
-
len_rtx = expand_expr (len, NULL_RTX, VOIDmode, 0);
src_str = c_getstr (src);
tree result = fold_builtin_memmove (arglist, type);
if (result)
- expand_expr (result, target, mode, EXPAND_NORMAL);
+ return expand_expr (result, target, mode, EXPAND_NORMAL);
/* If DEST is not a pointer type, call the normal function. */
if (dest_align == 0)
it is ok to use memcpy as well. */
if (integer_onep (len))
{
- rtx ret = expand_builtin_mempcpy (arglist, target, mode,
+ rtx ret = expand_builtin_mempcpy (arglist, type, target, mode,
/*endp=*/0);
if (ret)
return ret;
narglist = build_tree_list (NULL_TREE, lenp1);
narglist = tree_cons (NULL_TREE, src, narglist);
narglist = tree_cons (NULL_TREE, dst, narglist);
- ret = expand_builtin_mempcpy (narglist, target, mode, /*endp=*/2);
+ ret = expand_builtin_mempcpy (narglist, TREE_TYPE (exp),
+ target, mode, /*endp=*/2);
if (ret)
return ret;
otherwise try to get the result in TARGET, if convenient. */
static rtx
-expand_builtin_strcat (tree arglist, rtx target, enum machine_mode mode)
+expand_builtin_strcat (tree arglist, tree type, rtx target, enum machine_mode mode)
{
if (!validate_arglist (arglist, POINTER_TYPE, POINTER_TYPE, VOID_TYPE))
return 0;
pass in a target of zero, it should never actually be
used. If this was successful return the original
dst, not the result of mempcpy. */
- if (expand_builtin_mempcpy (arglist, /*target=*/0, mode, /*endp=*/0))
+ if (expand_builtin_mempcpy (arglist, type, /*target=*/0, mode, /*endp=*/0))
return expand_expr (dst, target, mode, EXPAND_NORMAL);
else
return 0;
return const0_rtx;
}
-/* Expand ARGLIST, from a call to __builtin_next_arg. */
+/* Expand a call to __builtin_next_arg. */
static rtx
-expand_builtin_next_arg (tree arglist)
+expand_builtin_next_arg (void)
{
- tree fntype = TREE_TYPE (current_function_decl);
-
- if (TYPE_ARG_TYPES (fntype) == 0
- || (TREE_VALUE (tree_last (TYPE_ARG_TYPES (fntype)))
- == void_type_node))
- {
- error ("%<va_start%> used in function with fixed args");
- return const0_rtx;
- }
-
- if (arglist)
- {
- tree last_parm = tree_last (DECL_ARGUMENTS (current_function_decl));
- tree arg = TREE_VALUE (arglist);
-
- /* Strip off all nops for the sake of the comparison. This
- is not quite the same as STRIP_NOPS. It does more.
- We must also strip off INDIRECT_EXPR for C++ reference
- parameters. */
- while (TREE_CODE (arg) == NOP_EXPR
- || TREE_CODE (arg) == CONVERT_EXPR
- || TREE_CODE (arg) == NON_LVALUE_EXPR
- || TREE_CODE (arg) == INDIRECT_REF)
- arg = TREE_OPERAND (arg, 0);
- if (arg != last_parm)
- warning ("second parameter of %<va_start%> not last named argument");
- }
- else
- /* Evidently an out of date version of <stdarg.h>; can't validate
- va_start's second argument, but can still work as intended. */
- warning ("%<__builtin_next_arg%> called without an argument");
-
+ /* Checking arguments is already done in fold_builtin_next_arg
+ that must be called before this function. */
return expand_binop (Pmode, add_optab,
current_function_internal_arg_pointer,
current_function_arg_offset_rtx,
chain = TREE_CHAIN (arglist);
- if (TREE_CHAIN (chain))
- error ("too many arguments to function %<va_start%>");
+ if (!chain)
+ {
+ error ("too few arguments to function %<va_start%>");
+ return const0_rtx;
+ }
- fold_builtin_next_arg (chain);
+ if (fold_builtin_next_arg (chain))
+ return const0_rtx;
- nextarg = expand_builtin_next_arg (chain);
+ nextarg = expand_builtin_next_arg ();
valist = stabilize_va_list (TREE_VALUE (arglist), 1);
#ifdef EXPAND_BUILTIN_VA_START
else if (! host_integerp (TREE_VALUE (arglist), 1))
{
if (DECL_FUNCTION_CODE (fndecl) == BUILT_IN_FRAME_ADDRESS)
- error ("invalid arg to %<__builtin_frame_address%>");
+ error ("invalid argument to %<__builtin_frame_address%>");
else
- error ("invalid arg to %<__builtin_return_address%>");
+ error ("invalid argument to %<__builtin_return_address%>");
return const0_rtx;
}
else
if (tem == NULL)
{
if (DECL_FUNCTION_CODE (fndecl) == BUILT_IN_FRAME_ADDRESS)
- warning ("unsupported arg to %<__builtin_frame_address%>");
+ warning ("unsupported argument to %<__builtin_frame_address%>");
else
- warning ("unsupported arg to %<__builtin_return_address%>");
+ warning ("unsupported argument to %<__builtin_return_address%>");
return const0_rtx;
}
if (TREE_CODE (c) != INTEGER_CST)
{
- error ("second arg to %<__builtin_expect%> must be a constant");
+ error ("second argument to %<__builtin_expect%> must be a constant");
c = integer_zero_node;
}
return ret;
}
-void
+static void
expand_builtin_trap (void)
{
#ifdef HAVE_trap
/* Return the address of the first anonymous stack arg. */
case BUILT_IN_NEXT_ARG:
- fold_builtin_next_arg (arglist);
- return expand_builtin_next_arg (arglist);
+ if (fold_builtin_next_arg (arglist))
+ return const0_rtx;
+ return expand_builtin_next_arg ();
case BUILT_IN_CLASSIFY_TYPE:
return expand_builtin_classify_type (arglist);
break;
case BUILT_IN_STRCAT:
- target = expand_builtin_strcat (arglist, target, mode);
+ target = expand_builtin_strcat (arglist, TREE_TYPE (exp), target, mode);
if (target)
return target;
break;
break;
case BUILT_IN_MEMPCPY:
- target = expand_builtin_mempcpy (arglist, target, mode, /*endp=*/ 1);
+ target = expand_builtin_mempcpy (arglist, TREE_TYPE (exp), target, mode, /*endp=*/ 1);
if (target)
return target;
break;
if (value != const1_rtx)
{
- error ("__builtin_longjmp second argument must be 1");
+ error ("%<__builtin_longjmp%> second argument must be 1");
return const0_rtx;
}
{
REAL_VALUE_TYPE real;
+ /* __builtin_inff is intended to be usable to define INFINITY on all
+ targets. If an infinity is not available, INFINITY expands "to a
+ positive constant of type float that overflows at translation
+ time", footnote "In this case, using INFINITY will violate the
+ constraint in 6.4.4 and thus require a diagnostic." (C99 7.12#4).
+ Thus we pedwarn to ensure this constraint violation is
+ diagnosed. */
if (!MODE_HAS_INFINITIES (TYPE_MODE (type)) && warn)
- warning ("target format does not support infinity");
+ pedwarn ("target format does not support infinity");
real_inf (&real);
return build_real (type, real);
NULL_TREE if no simplification can be made. */
static tree
-fold_builtin_mempcpy (tree exp)
+fold_builtin_mempcpy (tree arglist, tree type, int endp)
{
- tree arglist = TREE_OPERAND (exp, 1);
- tree dest, src, len;
-
- if (!validate_arglist (arglist,
- POINTER_TYPE, POINTER_TYPE, INTEGER_TYPE, VOID_TYPE))
- return 0;
+ if (validate_arglist (arglist,
+ POINTER_TYPE, POINTER_TYPE, INTEGER_TYPE, VOID_TYPE))
+ {
+ tree dest = TREE_VALUE (arglist);
+ tree src = TREE_VALUE (TREE_CHAIN (arglist));
+ tree len = TREE_VALUE (TREE_CHAIN (TREE_CHAIN (arglist)));
- dest = TREE_VALUE (arglist);
- src = TREE_VALUE (TREE_CHAIN (arglist));
- len = TREE_VALUE (TREE_CHAIN (TREE_CHAIN (arglist)));
+ /* If the LEN parameter is zero, return DEST. */
+ if (integer_zerop (len))
+ return omit_one_operand (type, dest, src);
- /* If the LEN parameter is zero, return DEST. */
- if (integer_zerop (len))
- return omit_one_operand (TREE_TYPE (exp), dest, src);
+ /* If SRC and DEST are the same (and not volatile), return DEST+LEN. */
+ if (operand_equal_p (src, dest, 0))
+ {
+ if (endp == 0)
+ return omit_one_operand (type, dest, len);
- /* If SRC and DEST are the same (and not volatile), return DEST+LEN. */
- if (operand_equal_p (src, dest, 0))
- {
- tree temp = fold_convert (TREE_TYPE (dest), len);
- temp = fold (build2 (PLUS_EXPR, TREE_TYPE (dest), dest, temp));
- return fold_convert (TREE_TYPE (exp), temp);
+ if (endp == 2)
+ len = fold (build2 (MINUS_EXPR, TREE_TYPE (len), len,
+ ssize_int (1)));
+
+ len = fold_convert (TREE_TYPE (dest), len);
+ len = fold (build2 (PLUS_EXPR, TREE_TYPE (dest), dest, len));
+ return fold_convert (type, len);
+ }
}
-
return 0;
}
tree type = TREE_TYPE (TREE_TYPE (fndecl));
enum tree_code code;
tree arg0, arg1;
+ tree type0, type1;
+ enum tree_code code0, code1;
+ tree cmp_type = NULL_TREE;
if (!validate_arglist (arglist, REAL_TYPE, REAL_TYPE, VOID_TYPE))
{
- enum tree_code code0, code1;
- tree type0, type1;
- tree cmp_type = 0;
-
/* Check that we have exactly two arguments. */
if (arglist == 0 || TREE_CHAIN (arglist) == 0)
{
IDENTIFIER_POINTER (DECL_NAME (fndecl)));
return error_mark_node;
}
-
- arg0 = TREE_VALUE (arglist);
- arg1 = TREE_VALUE (TREE_CHAIN (arglist));
-
- type0 = TREE_TYPE (arg0);
- type1 = TREE_TYPE (arg1);
-
- code0 = TREE_CODE (type0);
- code1 = TREE_CODE (type1);
-
- if (code0 == REAL_TYPE && code1 == REAL_TYPE)
- /* Choose the wider of two real types. */
- cmp_type = TYPE_PRECISION (type0) >= TYPE_PRECISION (type1)
- ? type0 : type1;
- else if (code0 == REAL_TYPE && code1 == INTEGER_TYPE)
- cmp_type = type0;
- else if (code0 == INTEGER_TYPE && code1 == REAL_TYPE)
- cmp_type = type1;
- else
- {
- error ("non-floating-point argument to function %qs",
- IDENTIFIER_POINTER (DECL_NAME (fndecl)));
- return error_mark_node;
- }
-
- arg0 = fold_convert (cmp_type, arg0);
- arg1 = fold_convert (cmp_type, arg1);
}
+
+ arg0 = TREE_VALUE (arglist);
+ arg1 = TREE_VALUE (TREE_CHAIN (arglist));
+
+ type0 = TREE_TYPE (arg0);
+ type1 = TREE_TYPE (arg1);
+
+ code0 = TREE_CODE (type0);
+ code1 = TREE_CODE (type1);
+
+ if (code0 == REAL_TYPE && code1 == REAL_TYPE)
+ /* Choose the wider of two real types. */
+ cmp_type = TYPE_PRECISION (type0) >= TYPE_PRECISION (type1)
+ ? type0 : type1;
+ else if (code0 == REAL_TYPE && code1 == INTEGER_TYPE)
+ cmp_type = type0;
+ else if (code0 == INTEGER_TYPE && code1 == REAL_TYPE)
+ cmp_type = type1;
else
{
- arg0 = TREE_VALUE (arglist);
- arg1 = TREE_VALUE (TREE_CHAIN (arglist));
+ error ("non-floating-point argument to function %qs",
+ IDENTIFIER_POINTER (DECL_NAME (fndecl)));
+ return error_mark_node;
}
+
+ arg0 = fold_convert (cmp_type, arg0);
+ arg1 = fold_convert (cmp_type, arg1);
if (unordered_code == UNORDERED_EXPR)
{
return fold_builtin_memcpy (exp);
case BUILT_IN_MEMPCPY:
- return fold_builtin_mempcpy (exp);
+ return fold_builtin_mempcpy (arglist, type, /*endp=*/1);
case BUILT_IN_MEMMOVE:
return fold_builtin_memmove (arglist, type);
return build_function_call_expr (fn, arglist);
}
-static void
+/* Fold the new_arg's arguments (ARGLIST). Returns true if there was an error
+ produced. False otherwise. This is done so that we don't output the error
+ or warning twice or three times. */
+bool
fold_builtin_next_arg (tree arglist)
{
tree fntype = TREE_TYPE (current_function_decl);
if (TYPE_ARG_TYPES (fntype) == 0
|| (TREE_VALUE (tree_last (TYPE_ARG_TYPES (fntype)))
== void_type_node))
- error ("%<va_start%> used in function with fixed args");
- else if (arglist)
+ {
+ error ("%<va_start%> used in function with fixed args");
+ return true;
+ }
+ else if (!arglist)
+ {
+ /* Evidently an out of date version of <stdarg.h>; can't validate
+ va_start's second argument, but can still work as intended. */
+ warning ("%<__builtin_next_arg%> called without an argument");
+ return true;
+ }
+ /* We use __builtin_va_start (ap, 0, 0) or __builtin_next_arg (0, 0)
+ when we checked the arguments and if needed issued a warning. */
+ else if (!TREE_CHAIN (arglist)
+ || !integer_zerop (TREE_VALUE (arglist))
+ || !integer_zerop (TREE_VALUE (TREE_CHAIN (arglist)))
+ || TREE_CHAIN (TREE_CHAIN (arglist)))
{
tree last_parm = tree_last (DECL_ARGUMENTS (current_function_decl));
tree arg = TREE_VALUE (arglist);
+ if (TREE_CHAIN (arglist))
+ {
+ error ("%<va_start%> used with too many arguments");
+ return true;
+ }
+
/* Strip off all nops for the sake of the comparison. This
is not quite the same as STRIP_NOPS. It does more.
We must also strip off INDIRECT_EXPR for C++ reference
|| TREE_CODE (arg) == INDIRECT_REF)
arg = TREE_OPERAND (arg, 0);
if (arg != last_parm)
- warning ("second parameter of %<va_start%> not last named argument");
- TREE_VALUE (arglist) = arg;
+ {
+ /* FIXME: Sometimes with the tree optimizers we can get the
+ not the last argument even though the user used the last
+ argument. We just warn and set the arg to be the last
+ argument so that we will get wrong-code because of
+ it. */
+ warning ("second parameter of %<va_start%> not last named argument");
+ }
+ /* We want to verify the second parameter just once before the tree
+ optimizers are run and then avoid keeping it in the tree,
+ as otherwise we could warn even for correct code like:
+ void foo (int i, ...)
+ { va_list ap; i++; va_start (ap, i); va_end (ap); } */
+ TREE_VALUE (arglist) = integer_zero_node;
+ TREE_CHAIN (arglist) = build_tree_list (NULL, integer_zero_node);
}
- else
- /* Evidently an out of date version of <stdarg.h>; can't validate
- va_start's second argument, but can still work as intended. */
- warning ("%<__builtin_next_arg%> called without an argument");
+ return false;
}
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