/* Default target hook functions.
- Copyright (C) 2003-2017 Free Software Foundation, Inc.
+ Copyright (C) 2003-2019 Free Software Foundation, Inc.
This file is part of GCC.
#include "predict.h"
#include "params.h"
#include "real.h"
-
+#include "langhooks.h"
+#include "sbitmap.h"
bool
default_legitimate_address_p (machine_mode mode ATTRIBUTE_UNUSED,
}
bool
-default_legitimize_address_displacement (rtx *disp ATTRIBUTE_UNUSED,
- rtx *offset ATTRIBUTE_UNUSED,
- machine_mode mode ATTRIBUTE_UNUSED)
+default_legitimize_address_displacement (rtx *, rtx *, poly_int64,
+ machine_mode)
{
return false;
}
+bool
+default_const_not_ok_for_debug_p (rtx x)
+{
+ if (GET_CODE (x) == UNSPEC)
+ return true;
+ return false;
+}
+
rtx
default_expand_builtin_saveregs (void)
{
unsigned HOST_WIDE_INT
default_shift_truncation_mask (machine_mode mode)
{
- return SHIFT_COUNT_TRUNCATED ? GET_MODE_BITSIZE (mode) - 1 : 0;
+ return SHIFT_COUNT_TRUNCATED ? GET_MODE_UNIT_BITSIZE (mode) - 1 : 0;
}
/* The default implementation of TARGET_MIN_DIVISIONS_FOR_RECIP_MUL. */
return get_identifier (stripped);
}
+/* The default implementation of TARGET_TRANSLATE_MODE_ATTRIBUTE. */
+
+machine_mode
+default_translate_mode_attribute (machine_mode mode)
+{
+ return mode;
+}
+
/* True if MODE is valid for the target. By "valid", we mean able to
be manipulated in non-trivial ways. In particular, this means all
the arithmetic is supported.
return opt_scalar_float_mode ();
}
+/* Define this to return true if the _Floatn and _Floatnx built-in functions
+ should implicitly enable the built-in function without the __builtin_ prefix
+ in addition to the normal built-in function with the __builtin_ prefix. The
+ default is to only enable built-in functions without the __builtin_ prefix
+ for the GNU C langauge. The argument FUNC is the enum builtin_in_function
+ id of the function to be enabled. */
+
+bool
+default_floatn_builtin_p (int func ATTRIBUTE_UNUSED)
+{
+ static bool first_time_p = true;
+ static bool c_or_objective_c;
+
+ if (first_time_p)
+ {
+ first_time_p = false;
+ c_or_objective_c = lang_GNU_C () || lang_GNU_OBJC ();
+ }
+
+ return c_or_objective_c;
+}
+
/* Make some target macros useable by target-independent code. */
bool
targhook_words_big_endian (void)
return 3;
case vec_construct:
- return TYPE_VECTOR_SUBPARTS (vectype) - 1;
+ return estimated_poly_value (TYPE_VECTOR_SUBPARTS (vectype)) - 1;
default:
gcc_unreachable ();
return 0;
}
+void
+hook_void_CUMULATIVE_ARGS_tree (cumulative_args_t ca ATTRIBUTE_UNUSED,
+ tree ATTRIBUTE_UNUSED)
+{
+}
+
void
default_function_arg_advance (cumulative_args_t ca ATTRIBUTE_UNUSED,
machine_mode mode ATTRIBUTE_UNUSED,
gcc_unreachable ();
}
+/* Default implementation of TARGET_FUNCTION_ARG_OFFSET. */
+
+HOST_WIDE_INT
+default_function_arg_offset (machine_mode, const_tree)
+{
+ return 0;
+}
+
/* Default implementation of TARGET_FUNCTION_ARG_PADDING: usually pad
upward, but pad short args downward on big-endian machines. */
size = int_size_in_bytes (type);
}
else
- size = GET_MODE_SIZE (mode);
+ /* Targets with variable-sized modes must override this hook
+ and handle variable-sized modes explicitly. */
+ size = GET_MODE_SIZE (mode).to_constant ();
if (size < (PARM_BOUNDARY / BITS_PER_UNIT))
return PAD_DOWNWARD;
const_rtx fun ATTRIBUTE_UNUSED)
{
#ifdef LIBCALL_VALUE
- return LIBCALL_VALUE (mode);
+ return LIBCALL_VALUE (MACRO_MODE (mode));
#else
gcc_unreachable ();
#endif
sorry ("nested function trampolines not supported on this target");
}
-int
-default_return_pops_args (tree fundecl ATTRIBUTE_UNUSED,
- tree funtype ATTRIBUTE_UNUSED,
- int size ATTRIBUTE_UNUSED)
+poly_int64
+default_return_pops_args (tree, tree, poly_int64)
{
return 0;
}
}
#ifdef SECONDARY_INPUT_RELOAD_CLASS
if (in_p)
- rclass = SECONDARY_INPUT_RELOAD_CLASS (reload_class, reload_mode, x);
+ rclass = SECONDARY_INPUT_RELOAD_CLASS (reload_class,
+ MACRO_MODE (reload_mode), x);
#endif
#ifdef SECONDARY_OUTPUT_RELOAD_CLASS
if (! in_p)
- rclass = SECONDARY_OUTPUT_RELOAD_CLASS (reload_class, reload_mode, x);
+ rclass = SECONDARY_OUTPUT_RELOAD_CLASS (reload_class,
+ MACRO_MODE (reload_mode), x);
#endif
if (rclass != NO_REGS)
{
return rclass;
}
+/* The default implementation of TARGET_SECONDARY_MEMORY_NEEDED_MODE. */
+
+machine_mode
+default_secondary_memory_needed_mode (machine_mode mode)
+{
+ if (!targetm.lra_p ()
+ && known_lt (GET_MODE_BITSIZE (mode), BITS_PER_WORD)
+ && INTEGRAL_MODE_P (mode))
+ return mode_for_size (BITS_PER_WORD, GET_MODE_CLASS (mode), 0).require ();
+ return mode;
+}
+
/* By default, if flag_pic is true, then neither local nor global relocs
should be placed in readonly memory. */
return flag_pic ? 3 : 0;
}
+/* By default, address diff vectors are generated
+for jump tables when flag_pic is true. */
+
+bool
+default_generate_pic_addr_diff_vec (void)
+{
+ return flag_pic;
+}
+
/* By default, do no modification. */
tree default_mangle_decl_assembler_name (tree decl ATTRIBUTE_UNUSED,
tree id)
return id;
}
+/* The default implementation of TARGET_STATIC_RTX_ALIGNMENT. */
+
+HOST_WIDE_INT
+default_static_rtx_alignment (machine_mode mode)
+{
+ return GET_MODE_ALIGNMENT (mode);
+}
+
+/* The default implementation of TARGET_CONSTANT_ALIGNMENT. */
+
+HOST_WIDE_INT
+default_constant_alignment (const_tree, HOST_WIDE_INT align)
+{
+ return align;
+}
+
+/* An implementation of TARGET_CONSTANT_ALIGNMENT that aligns strings
+ to at least BITS_PER_WORD but otherwise makes no changes. */
+
+HOST_WIDE_INT
+constant_alignment_word_strings (const_tree exp, HOST_WIDE_INT align)
+{
+ if (TREE_CODE (exp) == STRING_CST)
+ return MAX (align, BITS_PER_WORD);
+ return align;
+}
+
/* Default to natural alignment for vector types. */
HOST_WIDE_INT
default_vector_alignment (const_tree type)
return align;
}
+/* The default implementation of
+ TARGET_VECTORIZE_PREFERRED_VECTOR_ALIGNMENT. */
+
+poly_uint64
+default_preferred_vector_alignment (const_tree type)
+{
+ return TYPE_ALIGN (type);
+}
+
/* By default assume vectors of element TYPE require a multiple of the natural
alignment of TYPE. TYPE is naturally aligned if IS_PACKED is false. */
bool
return word_mode;
}
+/* By default do not split reductions further. */
+
+machine_mode
+default_split_reduction (machine_mode mode)
+{
+ return mode;
+}
+
/* By default only the size derived from the preferred vector mode
is tried. */
-unsigned int
-default_autovectorize_vector_sizes (void)
+void
+default_autovectorize_vector_sizes (vector_sizes *)
{
- return 0;
}
-/* By defaults a vector of integers is used as a mask. */
+/* By default a vector of integers is used as a mask. */
opt_machine_mode
-default_get_mask_mode (unsigned nunits, unsigned vector_size)
+default_get_mask_mode (poly_uint64 nunits, poly_uint64 vector_size)
{
- unsigned elem_size = vector_size / nunits;
+ unsigned int elem_size = vector_element_size (vector_size, nunits);
scalar_int_mode elem_mode
= smallest_int_mode_for_size (elem_size * BITS_PER_UNIT);
machine_mode vector_mode;
- gcc_assert (elem_size * nunits == vector_size);
+ gcc_assert (known_eq (elem_size * nunits, vector_size));
if (mode_for_vector (elem_mode, nunits).exists (&vector_mode)
&& VECTOR_MODE_P (vector_mode)
return opt_machine_mode ();
}
+/* By default consider masked stores to be expensive. */
+
+bool
+default_empty_mask_is_expensive (unsigned ifn)
+{
+ return ifn == IFN_MASK_STORE;
+}
+
/* By default, the cost model accumulates three separate costs (prologue,
loop body, and epilogue) for a vectorized loop or block. So allocate an
array of three unsigned ints, set it to zero, and return its address. */
gcc_unreachable ();
}
+/* The defualt implementation of TARGET_HARD_REGNO_NREGS. */
+
+unsigned int
+default_hard_regno_nregs (unsigned int, machine_mode mode)
+{
+ /* Targets with variable-sized modes must provide their own definition
+ of this hook. */
+ return CEIL (GET_MODE_SIZE (mode).to_constant (), UNITS_PER_WORD);
+}
+
bool
default_hard_regno_scratch_ok (unsigned int regno ATTRIBUTE_UNUSED)
{
#ifndef MEMORY_MOVE_COST
return (4 + memory_move_secondary_cost (mode, (enum reg_class) rclass, in));
#else
- return MEMORY_MOVE_COST (mode, (enum reg_class) rclass, in);
+ return MEMORY_MOVE_COST (MACRO_MODE (mode), (enum reg_class) rclass, in);
#endif
}
#ifndef REGISTER_MOVE_COST
return 2;
#else
- return REGISTER_MOVE_COST (mode, (enum reg_class) from, (enum reg_class) to);
+ return REGISTER_MOVE_COST (MACRO_MODE (mode),
+ (enum reg_class) from, (enum reg_class) to);
#endif
}
return STRICT_ALIGNMENT;
}
+/* The default implementation of TARGET_ESTIMATED_POLY_VALUE. */
+
+HOST_WIDE_INT
+default_estimated_poly_value (poly_int64 x)
+{
+ return x.coeffs[0];
+}
+
/* For hooks which use the MOVE_RATIO macro, this gives the legacy default
behavior. SPEED_P is true if we are compiling for speed. */
char buf[256];
static int patch_area_number;
section *previous_section = in_section;
+ const char *asm_op = integer_asm_op (POINTER_SIZE_UNITS, false);
+ gcc_assert (asm_op != NULL);
patch_area_number++;
ASM_GENERATE_INTERNAL_LABEL (buf, "LPFE", patch_area_number);
switch_to_section (get_section ("__patchable_function_entries",
0, NULL));
- fputs (integer_asm_op (POINTER_SIZE_UNITS, false), file);
+ fputs (asm_op, file);
assemble_name_raw (file, buf);
fputc ('\n', file);
machine_mode mode ATTRIBUTE_UNUSED)
{
#ifdef CLASS_MAX_NREGS
- return (unsigned char) CLASS_MAX_NREGS ((enum reg_class) rclass, mode);
+ return (unsigned char) CLASS_MAX_NREGS ((enum reg_class) rclass,
+ MACRO_MODE (mode));
#else
- return ((GET_MODE_SIZE (mode) + UNITS_PER_WORD - 1) / UNITS_PER_WORD);
+ /* Targets with variable-sized modes must provide their own definition
+ of this hook. */
+ unsigned int size = GET_MODE_SIZE (mode).to_constant ();
+ return (size + UNITS_PER_WORD - 1) / UNITS_PER_WORD;
#endif
}
return UI_NONE;
}
+/* Targets that set NUM_POLY_INT_COEFFS to something greater than 1
+ must define this hook. */
+
+unsigned int
+default_dwarf_poly_indeterminate_value (unsigned int, unsigned int *, int *)
+{
+ gcc_unreachable ();
+}
+
/* Determine the correct mode for a Dwarf frame register that represents
register REGNO. */
{
machine_mode save_mode = reg_raw_mode[regno];
- if (targetm.hard_regno_call_part_clobbered (regno, save_mode))
+ if (targetm.hard_regno_call_part_clobbered (NULL, regno, save_mode))
save_mode = choose_hard_reg_mode (regno, 1, true);
return save_mode;
}
/* To be used by targets where reg_raw_mode doesn't return the right
mode for registers used in apply_builtin_return and apply_builtin_arg. */
-machine_mode
+fixed_size_mode
default_get_reg_raw_mode (int regno)
{
- return reg_raw_mode[regno];
+ /* Targets must override this hook if the underlying register is
+ variable-sized. */
+ return as_a <fixed_size_mode> (reg_raw_mode[regno]);
}
/* Return true if a leaf function should stay leaf even with profiling
if (indirect)
type = build_pointer_type (type);
+ if (targetm.calls.split_complex_arg
+ && TREE_CODE (type) == COMPLEX_TYPE
+ && targetm.calls.split_complex_arg (type))
+ {
+ tree real_part, imag_part;
+
+ real_part = std_gimplify_va_arg_expr (valist,
+ TREE_TYPE (type), pre_p, NULL);
+ real_part = get_initialized_tmp_var (real_part, pre_p, NULL);
+
+ imag_part = std_gimplify_va_arg_expr (unshare_expr (valist),
+ TREE_TYPE (type), pre_p, NULL);
+ imag_part = get_initialized_tmp_var (imag_part, pre_p, NULL);
+
+ return build2 (COMPLEX_EXPR, type, real_part, imag_part);
+ }
+
align = PARM_BOUNDARY / BITS_PER_UNIT;
boundary = targetm.calls.function_arg_boundary (TYPE_MODE (type), type);
/* va_list pointer is aligned to PARM_BOUNDARY. If argument actually
requires greater alignment, we must perform dynamic alignment. */
if (boundary > align
+ && !TYPE_EMPTY_P (type)
&& !integer_zerop (TYPE_SIZE (type)))
{
t = build2 (MODIFY_EXPR, TREE_TYPE (valist), valist_tmp,
}
/* Compute the rounded size of the type. */
- type_size = size_in_bytes (type);
+ type_size = arg_size_in_bytes (type);
rounded_size = round_up (type_size, align);
/* Reduce rounded_size so it's sharable with the postqueue. */
return build_va_arg_indirect_ref (addr);
}
-tree
-default_chkp_bound_type (void)
-{
- tree res = make_node (POINTER_BOUNDS_TYPE);
- TYPE_PRECISION (res) = TYPE_PRECISION (size_type_node) * 2;
- TYPE_NAME (res) = get_identifier ("__bounds_type");
- SET_TYPE_MODE (res, targetm.chkp_bound_mode ());
- layout_type (res);
- return res;
-}
-
-machine_mode
-default_chkp_bound_mode (void)
-{
- return VOIDmode;
-}
-
-tree
-default_builtin_chkp_function (unsigned int fcode ATTRIBUTE_UNUSED)
-{
- return NULL_TREE;
-}
-
-rtx
-default_chkp_function_value_bounds (const_tree ret_type ATTRIBUTE_UNUSED,
- const_tree fn_decl_or_type ATTRIBUTE_UNUSED,
- bool outgoing ATTRIBUTE_UNUSED)
-{
- gcc_unreachable ();
-}
-
-tree
-default_chkp_make_bounds_constant (HOST_WIDE_INT lb ATTRIBUTE_UNUSED,
- HOST_WIDE_INT ub ATTRIBUTE_UNUSED)
-{
- return NULL_TREE;
-}
-
-int
-default_chkp_initialize_bounds (tree var ATTRIBUTE_UNUSED,
- tree lb ATTRIBUTE_UNUSED,
- tree ub ATTRIBUTE_UNUSED,
- tree *stmts ATTRIBUTE_UNUSED)
-{
- return 0;
-}
-
void
default_setup_incoming_vararg_bounds (cumulative_args_t ca ATTRIBUTE_UNUSED,
machine_mode mode ATTRIBUTE_UNUSED,
return FLT_EVAL_METHOD_PROMOTE_TO_FLOAT;
}
+/* Default implementation for
+ TARGET_STACK_CLASH_PROTECTION_ALLOCA_PROBE_RANGE. */
+HOST_WIDE_INT
+default_stack_clash_protection_alloca_probe_range (void)
+{
+ return 0;
+}
+
+/* The default implementation of TARGET_EARLY_REMAT_MODES. */
+
+void
+default_select_early_remat_modes (sbitmap)
+{
+}
+
+/* The default implementation of TARGET_PREFERRED_ELSE_VALUE. */
+
+tree
+default_preferred_else_value (unsigned, tree type, unsigned, tree *)
+{
+ return build_zero_cst (type);
+}
+
+/* Default implementation of TARGET_HAVE_SPECULATION_SAFE_VALUE. */
+bool
+default_have_speculation_safe_value (bool active ATTRIBUTE_UNUSED)
+{
+#ifdef HAVE_speculation_barrier
+ return active ? HAVE_speculation_barrier : true;
+#else
+ return false;
+#endif
+}
+/* Alternative implementation of TARGET_HAVE_SPECULATION_SAFE_VALUE
+ that can be used on targets that never have speculative execution. */
+bool
+speculation_safe_value_not_needed (bool active)
+{
+ return !active;
+}
+
+/* Default implementation of the speculation-safe-load builtin. This
+ implementation simply copies val to result and generates a
+ speculation_barrier insn, if such a pattern is defined. */
+rtx
+default_speculation_safe_value (machine_mode mode ATTRIBUTE_UNUSED,
+ rtx result, rtx val,
+ rtx failval ATTRIBUTE_UNUSED)
+{
+ emit_move_insn (result, val);
+
+#ifdef HAVE_speculation_barrier
+ /* Assume the target knows what it is doing: if it defines a
+ speculation barrier, but it is not enabled, then assume that one
+ isn't needed. */
+ if (HAVE_speculation_barrier)
+ emit_insn (gen_speculation_barrier ());
+#endif
+
+ return result;
+}
+
+void
+default_remove_extra_call_preserved_regs (rtx_insn *, HARD_REG_SET *)
+{
+}
+
#include "gt-targhooks.h"
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