/* Data structure definitions for a generic GCC target.
- Copyright (C) 2001-2013 Free Software Foundation, Inc.
+ Copyright (C) 2001-2021 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
#ifndef GCC_TARGET_H
#define GCC_TARGET_H
-#include "insn-modes.h"
#include "insn-codes.h"
-#include "double-int.h"
+#include "tm.h"
+#include "hard-reg-set.h"
-#ifdef ENABLE_CHECKING
+#if CHECKING_P
-typedef struct { void *magic; void *p; } cumulative_args_t;
+struct cumulative_args_t { void *magic; void *p; };
-#else /* !ENABLE_CHECKING */
+#else /* !CHECKING_P */
/* When using a GCC build compiler, we could use
__attribute__((transparent_union)) to get cumulative_args_t function
arguments passed like scalars where the ABI would mandate a less
efficient way of argument passing otherwise. However, that would come
- at the cost of less type-safe !ENABLE_CHECKING compilation. */
+ at the cost of less type-safe !CHECKING_P compilation. */
-typedef union { void *p; } cumulative_args_t;
+union cumulative_args_t { void *p; };
-#endif /* !ENABLE_CHECKING */
+#endif /* !CHECKING_P */
-/* Types used by the record_gcc_switches() target function. */
-typedef enum
+/* Types of memory operation understood by the "by_pieces" infrastructure.
+ Used by the TARGET_USE_BY_PIECES_INFRASTRUCTURE_P target hook and
+ internally by the functions in expr.c. */
+
+enum by_pieces_operation
{
- SWITCH_TYPE_PASSED, /* A switch passed on the command line. */
- SWITCH_TYPE_ENABLED, /* An option that is currently enabled. */
- SWITCH_TYPE_DESCRIPTIVE, /* Descriptive text, not a switch or option. */
- SWITCH_TYPE_LINE_START, /* Please emit any necessary text at the start of a line. */
- SWITCH_TYPE_LINE_END /* Please emit a line terminator. */
-}
-print_switch_type;
+ CLEAR_BY_PIECES,
+ MOVE_BY_PIECES,
+ SET_BY_PIECES,
+ STORE_BY_PIECES,
+ COMPARE_BY_PIECES
+};
-typedef int (* print_switch_fn_type) (print_switch_type, const char *);
+extern unsigned HOST_WIDE_INT by_pieces_ninsns (unsigned HOST_WIDE_INT,
+ unsigned int,
+ unsigned int,
+ by_pieces_operation);
/* An example implementation for ELF targets. Defined in varasm.c */
-extern int elf_record_gcc_switches (print_switch_type type, const char *);
+extern void elf_record_gcc_switches (const char *);
/* Some places still assume that all pointer or address modes are the
standard Pmode and ptr_mode. These optimizations become invalid if
we disable such optimizations on such targets, using this function. */
extern bool target_default_pointer_address_modes_p (void);
+/* For hooks which use the MOVE_RATIO macro, this gives the legacy default
+ behavior. */
+extern unsigned int get_move_ratio (bool);
+
struct stdarg_info;
struct spec_info_def;
struct hard_reg_set_container;
+struct cgraph_node;
+struct cgraph_simd_clone;
/* The struct used by the secondary_reload target hook. */
-typedef struct secondary_reload_info
+struct secondary_reload_info
{
/* icode is actually an enum insn_code, but we don't want to force every
file that includes target.h to include optabs.h . */
compatibility hook. */
struct secondary_reload_info *prev_sri;
int t_icode; /* Actually an enum insn_code - see above. */
-} secondary_reload_info;
+};
/* This is defined in sched-int.h . */
struct _dep;
struct ddg;
/* This is defined in cfgloop.h . */
-struct loop;
+class loop;
+
+/* This is defined in ifcvt.h. */
+struct noce_if_info;
/* This is defined in tree-ssa-alias.h. */
-struct ao_ref_s;
+class ao_ref;
/* This is defined in tree-vectorizer.h. */
-struct _stmt_vec_info;
+class _stmt_vec_info;
+
+/* This is defined in calls.h. */
+class function_arg_info;
+
+/* This is defined in function-abi.h. */
+class predefined_function_abi;
/* These are defined in tree-vect-stmts.c. */
-extern tree stmt_vectype (struct _stmt_vec_info *);
-extern bool stmt_in_inner_loop_p (struct _stmt_vec_info *);
+extern tree stmt_vectype (class _stmt_vec_info *);
+extern bool stmt_in_inner_loop_p (class vec_info *, class _stmt_vec_info *);
/* Assembler instructions for creating various kinds of integer object. */
struct asm_int_op
{
const char *hi;
+ const char *psi;
const char *si;
+ const char *pdi;
const char *di;
+ const char *pti;
const char *ti;
};
scalar_store,
vector_stmt,
vector_load,
+ vector_gather_load,
unaligned_load,
unaligned_store,
vector_store,
+ vector_scatter_store,
vec_to_scalar,
scalar_to_vec,
cond_branch_not_taken,
vect_epilogue = 2
};
+class vec_perm_indices;
+
+/* The type to use for lists of vector sizes. */
+typedef vec<machine_mode> vector_modes;
+
+/* Same, but can be used to construct local lists that are
+ automatically freed. */
+typedef auto_vec<machine_mode, 8> auto_vector_modes;
+
+/* First argument of targetm.omp.device_kind_arch_isa. */
+enum omp_device_kind_arch_isa {
+ omp_device_kind,
+ omp_device_arch,
+ omp_device_isa
+};
+
+/* Flags returned by TARGET_VECTORIZE_AUTOVECTORIZE_VECTOR_MODES:
+
+ VECT_COMPARE_COSTS
+ Tells the loop vectorizer to try all the provided modes and
+ pick the one with the lowest cost. By default the vectorizer
+ will choose the first mode that works. */
+const unsigned int VECT_COMPARE_COSTS = 1U << 0;
+
+/* The contexts in which the use of a type T can be checked by
+ TARGET_VERIFY_TYPE_CONTEXT. */
+enum type_context_kind {
+ /* Directly measuring the size of T. */
+ TCTX_SIZEOF,
+
+ /* Directly measuring the alignment of T. */
+ TCTX_ALIGNOF,
+
+ /* Creating objects of type T with static storage duration. */
+ TCTX_STATIC_STORAGE,
+
+ /* Creating objects of type T with thread-local storage duration. */
+ TCTX_THREAD_STORAGE,
+
+ /* Creating a field of type T. */
+ TCTX_FIELD,
+
+ /* Creating an array with elements of type T. */
+ TCTX_ARRAY_ELEMENT,
+
+ /* Adding to or subtracting from a pointer to T, or computing the
+ difference between two pointers when one of them is a pointer to T. */
+ TCTX_POINTER_ARITH,
+
+ /* Dynamically allocating objects of type T. */
+ TCTX_ALLOCATION,
+
+ /* Dynamically deallocating objects of type T. */
+ TCTX_DEALLOCATION,
+
+ /* Throwing or catching an object of type T. */
+ TCTX_EXCEPTIONS,
+
+ /* Capturing objects of type T by value in a closure. */
+ TCTX_CAPTURE_BY_COPY
+};
+
+enum poly_value_estimate_kind
+{
+ POLY_VALUE_MIN,
+ POLY_VALUE_MAX,
+ POLY_VALUE_LIKELY
+};
+
+extern bool verify_type_context (location_t, type_context_kind, const_tree,
+ bool = false);
+
/* The target structure. This holds all the backend hooks. */
#define DEFHOOKPOD(NAME, DOC, TYPE, INIT) TYPE NAME;
#define DEFHOOK(NAME, DOC, TYPE, PARAMS, INIT) TYPE (* NAME) PARAMS;
extern struct gcc_target targetm;
+/* Return an estimate of the runtime value of X, for use in things
+ like cost calculations or profiling frequencies. Note that this
+ function should never be used in situations where the actual
+ runtime value is needed for correctness, since the function only
+ provides a rough guess. */
+
+static inline HOST_WIDE_INT
+estimated_poly_value (poly_int64 x,
+ poly_value_estimate_kind kind = POLY_VALUE_LIKELY)
+{
+ if (NUM_POLY_INT_COEFFS == 1)
+ return x.coeffs[0];
+ else
+ return targetm.estimated_poly_value (x, kind);
+}
+
#ifdef GCC_TM_H
#ifndef CUMULATIVE_ARGS_MAGIC
static inline CUMULATIVE_ARGS *
get_cumulative_args (cumulative_args_t arg)
{
-#ifdef ENABLE_CHECKING
+#if CHECKING_P
gcc_assert (arg.magic == CUMULATIVE_ARGS_MAGIC);
-#endif /* ENABLE_CHECKING */
+#endif /* CHECKING_P */
return (CUMULATIVE_ARGS *) arg.p;
}
{
cumulative_args_t ret;
-#ifdef ENABLE_CHECKING
+#if CHECKING_P
ret.magic = CUMULATIVE_ARGS_MAGIC;
-#endif /* ENABLE_CHECKING */
+#endif /* CHECKING_P */
ret.p = (void *) arg;
return ret;
}
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