/* Default target hook functions.
- Copyright (C) 2003, 2004, 2005 Free Software Foundation, Inc.
+ Copyright (C) 2003, 2004, 2005, 2007 Free Software Foundation, Inc.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
-Software Foundation; either version 2, or (at your option) any later
+Software Foundation; either version 3, or (at your option) any later
version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
for more details.
You should have received a copy of the GNU General Public License
-along with GCC; see the file COPYING. If not, write to the Free
-Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
-02110-1301, USA. */
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
/* The migration of target macros to target hooks works as follows:
#include "tm_p.h"
#include "target-def.h"
#include "ggc.h"
+#include "hard-reg-set.h"
+#include "reload.h"
+#include "optabs.h"
+#include "recog.h"
void
#endif
}
+int
+default_unspec_may_trap_p (const_rtx x, unsigned flags)
+{
+ int i;
+
+ if (GET_CODE (x) == UNSPEC_VOLATILE
+ /* Any floating arithmetic may trap. */
+ || (SCALAR_FLOAT_MODE_P (GET_MODE (x))
+ && flag_trapping_math))
+ return 1;
+
+ for (i = 0; i < XVECLEN (x, 0); ++i)
+ {
+ if (may_trap_p_1 (XVECEXP (x, 0, i), flags))
+ return 1;
+ }
+
+ return 0;
+}
+
enum machine_mode
default_cc_modes_compatible (enum machine_mode m1, enum machine_mode m2)
{
}
bool
-default_return_in_memory (tree type,
- tree fntype ATTRIBUTE_UNUSED)
+default_return_in_memory (const_tree type,
+ const_tree fntype ATTRIBUTE_UNUSED)
{
#ifndef RETURN_IN_MEMORY
return (TYPE_MODE (type) == BLKmode);
return word_mode;
}
+enum machine_mode
+default_libgcc_cmp_return_mode (void)
+{
+ return word_mode;
+}
+
+enum machine_mode
+default_libgcc_shift_count_mode (void)
+{
+ return word_mode;
+}
+
/* The default implementation of TARGET_SHIFT_TRUNCATION_MASK. */
unsigned HOST_WIDE_INT
return SHIFT_COUNT_TRUNCATED ? GET_MODE_BITSIZE (mode) - 1 : 0;
}
+/* The default implementation of TARGET_MIN_DIVISIONS_FOR_RECIP_MUL. */
+
+unsigned int
+default_min_divisions_for_recip_mul (enum machine_mode mode ATTRIBUTE_UNUSED)
+{
+ return have_insn_for (DIV, mode) ? 3 : 2;
+}
+
+/* The default implementation of TARGET_MODE_REP_EXTENDED. */
+
+int
+default_mode_rep_extended (enum machine_mode mode ATTRIBUTE_UNUSED,
+ enum machine_mode mode_rep ATTRIBUTE_UNUSED)
+{
+ return UNKNOWN;
+}
+
/* Generic hook that takes a CUMULATIVE_ARGS pointer and returns true. */
bool
return true;
}
+/* Return machine mode for non-standard suffix
+ or VOIDmode if non-standard suffixes are unsupported. */
+enum machine_mode
+default_mode_for_suffix (char suffix ATTRIBUTE_UNUSED)
+{
+ return VOIDmode;
+}
/* The generic C++ ABI specifies this is a 64-bit value. */
tree
bool
hook_pass_by_reference_must_pass_in_stack (CUMULATIVE_ARGS *c ATTRIBUTE_UNUSED,
- enum machine_mode mode ATTRIBUTE_UNUSED, tree type ATTRIBUTE_UNUSED,
+ enum machine_mode mode ATTRIBUTE_UNUSED, const_tree type ATTRIBUTE_UNUSED,
bool named_arg ATTRIBUTE_UNUSED)
{
return targetm.calls.must_pass_in_stack (mode, type);
bool
hook_callee_copies_named (CUMULATIVE_ARGS *ca ATTRIBUTE_UNUSED,
enum machine_mode mode ATTRIBUTE_UNUSED,
- tree type ATTRIBUTE_UNUSED, bool named)
+ const_tree type ATTRIBUTE_UNUSED, bool named)
{
return named;
}
return true;
return false;
+ case MODE_DECIMAL_FLOAT:
+ case MODE_FRACT:
+ case MODE_UFRACT:
+ case MODE_ACCUM:
+ case MODE_UACCUM:
+ return false;
+
default:
gcc_unreachable ();
}
}
+/* True if the target supports decimal floating point. */
+
+bool
+default_decimal_float_supported_p (void)
+{
+ return ENABLE_DECIMAL_FLOAT;
+}
+
+/* True if the target supports fixed-point arithmetic. */
+
+bool
+default_fixed_point_supported_p (void)
+{
+ return ENABLE_FIXED_POINT;
+}
+
/* NULL if INSN insn is valid within a low-overhead loop, otherwise returns
an error message.
these cases. */
const char *
-default_invalid_within_doloop (rtx insn)
+default_invalid_within_doloop (const_rtx insn)
{
if (CALL_P (insn))
return "Function call in loop.";
return NULL;
}
+/* Mapping of builtin functions to vectorized variants. */
+
+tree
+default_builtin_vectorized_function (enum built_in_function fn ATTRIBUTE_UNUSED,
+ tree type_out ATTRIBUTE_UNUSED,
+ tree type_in ATTRIBUTE_UNUSED)
+{
+ return NULL_TREE;
+}
+
+/* Vectorized conversion. */
+
+tree
+default_builtin_vectorized_conversion (enum tree_code code ATTRIBUTE_UNUSED,
+ tree type ATTRIBUTE_UNUSED)
+{
+ return NULL_TREE;
+}
+
+/* Reciprocal. */
+
+tree
+default_builtin_reciprocal (enum built_in_function fn ATTRIBUTE_UNUSED,
+ bool md_fn ATTRIBUTE_UNUSED,
+ bool sqrt ATTRIBUTE_UNUSED)
+{
+ return NULL_TREE;
+}
+
bool
hook_bool_CUMULATIVE_ARGS_mode_tree_bool_false (
CUMULATIVE_ARGS *ca ATTRIBUTE_UNUSED,
enum machine_mode mode ATTRIBUTE_UNUSED,
- tree type ATTRIBUTE_UNUSED, bool named ATTRIBUTE_UNUSED)
+ const_tree type ATTRIBUTE_UNUSED, bool named ATTRIBUTE_UNUSED)
{
return false;
}
hook_bool_CUMULATIVE_ARGS_mode_tree_bool_true (
CUMULATIVE_ARGS *ca ATTRIBUTE_UNUSED,
enum machine_mode mode ATTRIBUTE_UNUSED,
- tree type ATTRIBUTE_UNUSED, bool named ATTRIBUTE_UNUSED)
+ const_tree type ATTRIBUTE_UNUSED, bool named ATTRIBUTE_UNUSED)
{
return true;
}
return 0;
}
+void
+hook_void_bitmap (bitmap regs ATTRIBUTE_UNUSED)
+{
+}
+
const char *
hook_invalid_arg_for_unprototyped_fn (
- tree typelist ATTRIBUTE_UNUSED,
- tree funcdecl ATTRIBUTE_UNUSED,
- tree val ATTRIBUTE_UNUSED)
+ const_tree typelist ATTRIBUTE_UNUSED,
+ const_tree funcdecl ATTRIBUTE_UNUSED,
+ const_tree val ATTRIBUTE_UNUSED)
{
return NULL;
}
TREE_NOTHROW (t) = 1;
DECL_ARTIFICIAL (t) = 1;
DECL_IGNORED_P (t) = 1;
+ DECL_VISIBILITY (t) = VISIBILITY_DEFAULT;
+ DECL_VISIBILITY_SPECIFIED (t) = 1;
stack_chk_fail_decl = t;
}
- return build_function_call_expr (t, NULL_TREE);
+ return build_call_expr (t, 0);
}
tree
stack_chk_fail_decl = t;
}
- return build_function_call_expr (t, NULL_TREE);
+ return build_call_expr (t, 0);
+#endif
+}
+
+bool
+hook_bool_const_rtx_commutative_p (const_rtx x,
+ int outer_code ATTRIBUTE_UNUSED)
+{
+ return COMMUTATIVE_P (x);
+}
+
+rtx
+default_function_value (const_tree ret_type ATTRIBUTE_UNUSED,
+ const_tree fn_decl_or_type,
+ bool outgoing ATTRIBUTE_UNUSED)
+{
+ /* The old interface doesn't handle receiving the function type. */
+ if (fn_decl_or_type
+ && !DECL_P (fn_decl_or_type))
+ fn_decl_or_type = NULL;
+
+#ifdef FUNCTION_OUTGOING_VALUE
+ if (outgoing)
+ return FUNCTION_OUTGOING_VALUE (ret_type, fn_decl_or_type);
+#endif
+
+#ifdef FUNCTION_VALUE
+ return FUNCTION_VALUE (ret_type, fn_decl_or_type);
+#else
+ return NULL_RTX;
+#endif
+}
+
+rtx
+default_internal_arg_pointer (void)
+{
+ /* If the reg that the virtual arg pointer will be translated into is
+ not a fixed reg or is the stack pointer, make a copy of the virtual
+ arg pointer, and address parms via the copy. The frame pointer is
+ considered fixed even though it is not marked as such. */
+ if ((ARG_POINTER_REGNUM == STACK_POINTER_REGNUM
+ || ! (fixed_regs[ARG_POINTER_REGNUM]
+ || ARG_POINTER_REGNUM == FRAME_POINTER_REGNUM)))
+ return copy_to_reg (virtual_incoming_args_rtx);
+ else
+ return virtual_incoming_args_rtx;
+}
+
+enum reg_class
+default_secondary_reload (bool in_p ATTRIBUTE_UNUSED, rtx x ATTRIBUTE_UNUSED,
+ enum reg_class reload_class ATTRIBUTE_UNUSED,
+ enum machine_mode reload_mode ATTRIBUTE_UNUSED,
+ secondary_reload_info *sri)
+{
+ enum reg_class class = NO_REGS;
+
+ if (sri->prev_sri && sri->prev_sri->t_icode != CODE_FOR_nothing)
+ {
+ sri->icode = sri->prev_sri->t_icode;
+ return NO_REGS;
+ }
+#ifdef SECONDARY_INPUT_RELOAD_CLASS
+ if (in_p)
+ class = SECONDARY_INPUT_RELOAD_CLASS (reload_class, reload_mode, x);
+#endif
+#ifdef SECONDARY_OUTPUT_RELOAD_CLASS
+ if (! in_p)
+ class = SECONDARY_OUTPUT_RELOAD_CLASS (reload_class, reload_mode, x);
#endif
+ if (class != NO_REGS)
+ {
+ enum insn_code icode = (in_p ? reload_in_optab[(int) reload_mode]
+ : reload_out_optab[(int) reload_mode]);
+
+ if (icode != CODE_FOR_nothing
+ && insn_data[(int) icode].operand[in_p].predicate
+ && ! insn_data[(int) icode].operand[in_p].predicate (x, reload_mode))
+ icode = CODE_FOR_nothing;
+ else if (icode != CODE_FOR_nothing)
+ {
+ const char *insn_constraint, *scratch_constraint;
+ char insn_letter, scratch_letter;
+ enum reg_class insn_class, scratch_class;
+
+ gcc_assert (insn_data[(int) icode].n_operands == 3);
+ insn_constraint = insn_data[(int) icode].operand[!in_p].constraint;
+ if (!*insn_constraint)
+ insn_class = ALL_REGS;
+ else
+ {
+ if (in_p)
+ {
+ gcc_assert (*insn_constraint == '=');
+ insn_constraint++;
+ }
+ insn_letter = *insn_constraint;
+ insn_class
+ = (insn_letter == 'r' ? GENERAL_REGS
+ : REG_CLASS_FROM_CONSTRAINT ((unsigned char) insn_letter,
+ insn_constraint));
+ gcc_assert (insn_class != NO_REGS);
+ }
+
+ scratch_constraint = insn_data[(int) icode].operand[2].constraint;
+ /* The scratch register's constraint must start with "=&",
+ except for an input reload, where only "=" is necessary,
+ and where it might be beneficial to re-use registers from
+ the input. */
+ gcc_assert (scratch_constraint[0] == '='
+ && (in_p || scratch_constraint[1] == '&'));
+ scratch_constraint++;
+ if (*scratch_constraint == '&')
+ scratch_constraint++;
+ scratch_letter = *scratch_constraint;
+ scratch_class
+ = (scratch_letter == 'r' ? GENERAL_REGS
+ : REG_CLASS_FROM_CONSTRAINT ((unsigned char) scratch_letter,
+ scratch_constraint));
+
+ if (reg_class_subset_p (reload_class, insn_class))
+ {
+ gcc_assert (scratch_class == class);
+ class = NO_REGS;
+ }
+ else
+ class = insn_class;
+
+ }
+ if (class == NO_REGS)
+ sri->icode = icode;
+ else
+ sri->t_icode = icode;
+ }
+ return class;
+}
+
+bool
+default_handle_c_option (size_t code ATTRIBUTE_UNUSED,
+ const char *arg ATTRIBUTE_UNUSED,
+ int value ATTRIBUTE_UNUSED)
+{
+ return false;
+}
+
+/* By default, if flag_pic is true, then neither local nor global relocs
+ should be placed in readonly memory. */
+
+int
+default_reloc_rw_mask (void)
+{
+ return flag_pic ? 3 : 0;
+}
+
+/* By default, do no modification. */
+tree default_mangle_decl_assembler_name (tree decl ATTRIBUTE_UNUSED,
+ tree id)
+{
+ return id;
+}
+
+bool
+default_builtin_vector_alignment_reachable (const_tree type, bool is_packed)
+{
+ if (is_packed)
+ return false;
+
+ /* Assuming that types whose size is > pointer-size are not guaranteed to be
+ naturally aligned. */
+ if (tree_int_cst_compare (TYPE_SIZE (type), bitsize_int (POINTER_SIZE)) > 0)
+ return false;
+
+ /* Assuming that types whose size is <= pointer-size
+ are naturally aligned. */
+ return true;
}
#include "gt-targhooks.h"
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