static rtx expand_builtin_alloca (tree, rtx);
static rtx expand_builtin_unop (enum machine_mode, tree, rtx, rtx, optab);
static rtx expand_builtin_frame_address (tree, tree);
-static rtx expand_builtin_printf (tree, rtx, enum machine_mode, bool);
-static rtx expand_builtin_fprintf (tree, rtx, enum machine_mode, bool);
-static rtx expand_builtin_sprintf (tree, rtx, enum machine_mode);
static tree stabilize_va_list_loc (location_t, tree, int);
static rtx expand_builtin_expect (tree, rtx);
static tree fold_builtin_constant_p (tree);
return t;
}
-/* Expand EXP, a call to printf or printf_unlocked.
- Return NULL_RTX if a normal call should be emitted rather than transforming
- the function inline. If convenient, the result should be placed in
- TARGET with mode MODE. UNLOCKED indicates this is a printf_unlocked
- call. */
-static rtx
-expand_builtin_printf (tree exp, rtx target, enum machine_mode mode,
- bool unlocked)
-{
- /* If we're using an unlocked function, assume the other unlocked
- functions exist explicitly. */
- tree const fn_putchar = unlocked ? built_in_decls[BUILT_IN_PUTCHAR_UNLOCKED]
- : implicit_built_in_decls[BUILT_IN_PUTCHAR];
- tree const fn_puts = unlocked ? built_in_decls[BUILT_IN_PUTS_UNLOCKED]
- : implicit_built_in_decls[BUILT_IN_PUTS];
- const char *fmt_str;
- tree fn = 0;
- tree fmt, arg;
- int nargs = call_expr_nargs (exp);
-
- /* If the return value is used, don't do the transformation. */
- if (target != const0_rtx)
- return NULL_RTX;
-
- /* Verify the required arguments in the original call. */
- if (nargs == 0)
- return NULL_RTX;
- fmt = CALL_EXPR_ARG (exp, 0);
- if (! POINTER_TYPE_P (TREE_TYPE (fmt)))
- return NULL_RTX;
-
- /* Check whether the format is a literal string constant. */
- fmt_str = c_getstr (fmt);
- if (fmt_str == NULL)
- return NULL_RTX;
-
- if (!init_target_chars ())
- return NULL_RTX;
-
- /* If the format specifier was "%s\n", call __builtin_puts(arg). */
- if (strcmp (fmt_str, target_percent_s_newline) == 0)
- {
- if ((nargs != 2)
- || ! POINTER_TYPE_P (TREE_TYPE (CALL_EXPR_ARG (exp, 1))))
- return NULL_RTX;
- if (fn_puts)
- fn = build_call_nofold (fn_puts, 1, CALL_EXPR_ARG (exp, 1));
- }
- /* If the format specifier was "%c", call __builtin_putchar(arg). */
- else if (strcmp (fmt_str, target_percent_c) == 0)
- {
- if ((nargs != 2)
- || TREE_CODE (TREE_TYPE (CALL_EXPR_ARG (exp, 1))) != INTEGER_TYPE)
- return NULL_RTX;
- if (fn_putchar)
- fn = build_call_nofold (fn_putchar, 1, CALL_EXPR_ARG (exp, 1));
- }
- else
- {
- /* We can't handle anything else with % args or %% ... yet. */
- if (strchr (fmt_str, target_percent))
- return NULL_RTX;
-
- if (nargs > 1)
- return NULL_RTX;
-
- /* If the format specifier was "", printf does nothing. */
- if (fmt_str[0] == '\0')
- return const0_rtx;
- /* If the format specifier has length of 1, call putchar. */
- if (fmt_str[1] == '\0')
- {
- /* Given printf("c"), (where c is any one character,)
- convert "c"[0] to an int and pass that to the replacement
- function. */
- arg = build_int_cst (NULL_TREE, fmt_str[0]);
- if (fn_putchar)
- fn = build_call_nofold (fn_putchar, 1, arg);
- }
- else
- {
- /* If the format specifier was "string\n", call puts("string"). */
- size_t len = strlen (fmt_str);
- if ((unsigned char)fmt_str[len - 1] == target_newline)
- {
- /* Create a NUL-terminated string that's one char shorter
- than the original, stripping off the trailing '\n'. */
- char *newstr = XALLOCAVEC (char, len);
- memcpy (newstr, fmt_str, len - 1);
- newstr[len - 1] = 0;
- arg = build_string_literal (len, newstr);
- if (fn_puts)
- fn = build_call_nofold (fn_puts, 1, arg);
- }
- else
- /* We'd like to arrange to call fputs(string,stdout) here,
- but we need stdout and don't have a way to get it yet. */
- return NULL_RTX;
- }
- }
-
- if (!fn)
- return NULL_RTX;
- gcc_assert (TREE_CODE (fn) == CALL_EXPR);
- CALL_EXPR_TAILCALL (fn) = CALL_EXPR_TAILCALL (exp);
- return expand_expr (fn, target, mode, EXPAND_NORMAL);
-}
-
-/* Expand EXP, a call to fprintf or fprintf_unlocked.
- Return NULL_RTX if a normal call should be emitted rather than transforming
- the function inline. If convenient, the result should be placed in
- TARGET with mode MODE. UNLOCKED indicates this is a fprintf_unlocked
- call. */
-static rtx
-expand_builtin_fprintf (tree exp, rtx target, enum machine_mode mode,
- bool unlocked)
-{
- /* If we're using an unlocked function, assume the other unlocked
- functions exist explicitly. */
- tree const fn_fputc = unlocked ? built_in_decls[BUILT_IN_FPUTC_UNLOCKED]
- : implicit_built_in_decls[BUILT_IN_FPUTC];
- tree const fn_fputs = unlocked ? built_in_decls[BUILT_IN_FPUTS_UNLOCKED]
- : implicit_built_in_decls[BUILT_IN_FPUTS];
- const char *fmt_str;
- tree fn = 0;
- tree fmt, fp, arg;
- int nargs = call_expr_nargs (exp);
-
- /* If the return value is used, don't do the transformation. */
- if (target != const0_rtx)
- return NULL_RTX;
-
- /* Verify the required arguments in the original call. */
- if (nargs < 2)
- return NULL_RTX;
- fp = CALL_EXPR_ARG (exp, 0);
- if (! POINTER_TYPE_P (TREE_TYPE (fp)))
- return NULL_RTX;
- fmt = CALL_EXPR_ARG (exp, 1);
- if (! POINTER_TYPE_P (TREE_TYPE (fmt)))
- return NULL_RTX;
-
- /* Check whether the format is a literal string constant. */
- fmt_str = c_getstr (fmt);
- if (fmt_str == NULL)
- return NULL_RTX;
-
- if (!init_target_chars ())
- return NULL_RTX;
-
- /* If the format specifier was "%s", call __builtin_fputs(arg,fp). */
- if (strcmp (fmt_str, target_percent_s) == 0)
- {
- if ((nargs != 3)
- || ! POINTER_TYPE_P (TREE_TYPE (CALL_EXPR_ARG (exp, 2))))
- return NULL_RTX;
- arg = CALL_EXPR_ARG (exp, 2);
- if (fn_fputs)
- fn = build_call_nofold (fn_fputs, 2, arg, fp);
- }
- /* If the format specifier was "%c", call __builtin_fputc(arg,fp). */
- else if (strcmp (fmt_str, target_percent_c) == 0)
- {
- if ((nargs != 3)
- || TREE_CODE (TREE_TYPE (CALL_EXPR_ARG (exp, 2))) != INTEGER_TYPE)
- return NULL_RTX;
- arg = CALL_EXPR_ARG (exp, 2);
- if (fn_fputc)
- fn = build_call_nofold (fn_fputc, 2, arg, fp);
- }
- else
- {
- /* We can't handle anything else with % args or %% ... yet. */
- if (strchr (fmt_str, target_percent))
- return NULL_RTX;
-
- if (nargs > 2)
- return NULL_RTX;
-
- /* If the format specifier was "", fprintf does nothing. */
- if (fmt_str[0] == '\0')
- {
- /* Evaluate and ignore FILE* argument for side-effects. */
- expand_expr (fp, const0_rtx, VOIDmode, EXPAND_NORMAL);
- return const0_rtx;
- }
-
- /* When "string" doesn't contain %, replace all cases of
- fprintf(stream,string) with fputs(string,stream). The fputs
- builtin will take care of special cases like length == 1. */
- if (fn_fputs)
- fn = build_call_nofold (fn_fputs, 2, fmt, fp);
- }
-
- if (!fn)
- return NULL_RTX;
- gcc_assert (TREE_CODE (fn) == CALL_EXPR);
- CALL_EXPR_TAILCALL (fn) = CALL_EXPR_TAILCALL (exp);
- return expand_expr (fn, target, mode, EXPAND_NORMAL);
-}
-
-/* Expand a call EXP to sprintf. Return NULL_RTX if
- a normal call should be emitted rather than expanding the function
- inline. If convenient, the result should be placed in TARGET with
- mode MODE. */
-
-static rtx
-expand_builtin_sprintf (tree exp, rtx target, enum machine_mode mode)
-{
- tree dest, fmt;
- const char *fmt_str;
- int nargs = call_expr_nargs (exp);
-
- /* Verify the required arguments in the original call. */
- if (nargs < 2)
- return NULL_RTX;
- dest = CALL_EXPR_ARG (exp, 0);
- if (! POINTER_TYPE_P (TREE_TYPE (dest)))
- return NULL_RTX;
- fmt = CALL_EXPR_ARG (exp, 0);
- if (! POINTER_TYPE_P (TREE_TYPE (fmt)))
- return NULL_RTX;
-
- /* Check whether the format is a literal string constant. */
- fmt_str = c_getstr (fmt);
- if (fmt_str == NULL)
- return NULL_RTX;
-
- if (!init_target_chars ())
- return NULL_RTX;
-
- /* If the format doesn't contain % args or %%, use strcpy. */
- if (strchr (fmt_str, target_percent) == 0)
- {
- tree fn = implicit_built_in_decls[BUILT_IN_STRCPY];
- tree exp;
-
- if ((nargs > 2) || ! fn)
- return NULL_RTX;
- expand_expr (build_call_nofold (fn, 2, dest, fmt),
- const0_rtx, VOIDmode, EXPAND_NORMAL);
- if (target == const0_rtx)
- return const0_rtx;
- exp = build_int_cst (NULL_TREE, strlen (fmt_str));
- return expand_expr (exp, target, mode, EXPAND_NORMAL);
- }
- /* If the format is "%s", use strcpy if the result isn't used. */
- else if (strcmp (fmt_str, target_percent_s) == 0)
- {
- tree fn, arg, len;
- fn = implicit_built_in_decls[BUILT_IN_STRCPY];
-
- if (! fn)
- return NULL_RTX;
- if (nargs != 3)
- return NULL_RTX;
- arg = CALL_EXPR_ARG (exp, 2);
- if (! POINTER_TYPE_P (TREE_TYPE (arg)))
- return NULL_RTX;
-
- if (target != const0_rtx)
- {
- len = c_strlen (arg, 1);
- if (! len || TREE_CODE (len) != INTEGER_CST)
- return NULL_RTX;
- }
- else
- len = NULL_TREE;
-
- expand_expr (build_call_nofold (fn, 2, dest, arg),
- const0_rtx, VOIDmode, EXPAND_NORMAL);
-
- if (target == const0_rtx)
- return const0_rtx;
- return expand_expr (len, target, mode, EXPAND_NORMAL);
- }
-
- return NULL_RTX;
-}
-
/* Expand a call to either the entry or exit function profiler. */
static rtx
expand_builtin_unreachable ();
return const0_rtx;
- case BUILT_IN_PRINTF:
- target = expand_builtin_printf (exp, target, mode, false);
- if (target)
- return target;
- break;
-
- case BUILT_IN_PRINTF_UNLOCKED:
- target = expand_builtin_printf (exp, target, mode, true);
- if (target)
- return target;
- break;
-
- case BUILT_IN_FPRINTF:
- target = expand_builtin_fprintf (exp, target, mode, false);
- if (target)
- return target;
- break;
-
- case BUILT_IN_FPRINTF_UNLOCKED:
- target = expand_builtin_fprintf (exp, target, mode, true);
- if (target)
- return target;
- break;
-
- case BUILT_IN_SPRINTF:
- target = expand_builtin_sprintf (exp, target, mode);
- if (target)
- return target;
- break;
-
CASE_FLT_FN (BUILT_IN_SIGNBIT):
case BUILT_IN_SIGNBITD32:
case BUILT_IN_SIGNBITD64:
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