/* Register Transfer Language (RTL) definitions for GCC
Copyright (C) 1987, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
- 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
+ 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
Free Software Foundation, Inc.
This file is part of GCC.
rtx size; /* Size in bytes, as a CONST_INT. */
alias_set_type alias; /* Memory alias set. */
unsigned int align; /* Alignment of MEM in bits. */
+ unsigned char addrspace; /* Address space (0 for generic). */
} mem_attrs;
/* Structure used to describe the attributes of a REG in similar way as
In a CODE_LABEL, part of the two-bit alternate entry field. */
unsigned int jump : 1;
/* In a CODE_LABEL, part of the two-bit alternate entry field.
- 1 in a MEM if it cannot trap.
+ 1 in a MEM if it cannot trap.
1 in a CALL_INSN logically equivalent to
ECF_LOOPING_CONST_OR_PURE and DECL_LOOPING_CONST_OR_PURE_P. */
unsigned int call : 1;
/* 1 in a REG, MEM, or CONCAT if the value is set at most once, anywhere.
- 1 in a SUBREG if it references an unsigned object whose mode has been
- from a promoted to a wider mode.
+ 1 in a SUBREG used for SUBREG_PROMOTED_UNSIGNED_P.
1 in a SYMBOL_REF if it addresses something in the per-function
constants pool.
- 1 in a CALL_INSN logically equivalent to ECF_CONST and TREE_READONLY.
+ 1 in a CALL_INSN logically equivalent to ECF_CONST and TREE_READONLY.
1 in a NOTE, or EXPR_LIST for a const call.
1 in a JUMP_INSN, CALL_INSN, or INSN of an annulling branch. */
unsigned int unchanging : 1;
if it has been deleted.
1 in a REG expression if corresponds to a variable declared by the user,
0 for an internally generated temporary.
- 1 in a SUBREG with a negative value.
+ 1 in a SUBREG used for SUBREG_PROMOTED_UNSIGNED_P.
1 in a LABEL_REF, REG_LABEL_TARGET or REG_LABEL_OPERAND note for a
non-local label.
In a SYMBOL_REF, this flag is used for machine-specific purposes.
unsigned frame_related : 1;
/* 1 in a REG or PARALLEL that is the current function's return value.
1 in a MEM if it refers to a scalar.
- 1 in a SYMBOL_REF for a weak symbol.
- 1 in a CALL_INSN logically equivalent to ECF_PURE and DECL_PURE_P. */
+ 1 in a SYMBOL_REF for a weak symbol.
+ 1 in a CALL_INSN logically equivalent to ECF_PURE and DECL_PURE_P. */
unsigned return_val : 1;
/* The first element of the operands of this rtx.
/* Predicate yielding nonzero iff X is an rtx for a constant integer. */
#define CONST_INT_P(X) (GET_CODE (X) == CONST_INT)
+/* Predicate yielding true iff X is an rtx for a double-int
+ or floating point constant. */
+#define CONST_DOUBLE_P(X) (GET_CODE (X) == CONST_DOUBLE)
+
/* Predicate yielding nonzero iff X is a label insn. */
#define LABEL_P(X) (GET_CODE (X) == CODE_LABEL)
#define INSN_LOCATOR(INSN) XINT (INSN, 4)
/* LOCATION of an RTX if relevant. */
#define RTL_LOCATION(X) (INSN_P (X) ? \
- locator_location (INSN_LOCATOR (x)) \
+ locator_location (INSN_LOCATOR (X)) \
: UNKNOWN_LOCATION)
/* LOCATION of current INSN. */
#define CURR_INSN_LOCATION (locator_location (curr_insn_locator ()))
#define NOTE_DURING_CALL_P(RTX) \
(RTL_FLAG_CHECK1("NOTE_VAR_LOCATION_DURING_CALL_P", (RTX), NOTE)->call)
+/* DEBUG_EXPR_DECL corresponding to a DEBUG_EXPR RTX. */
+#define DEBUG_EXPR_TREE_DECL(RTX) XCTREE (RTX, 0, DEBUG_EXPR)
+
/* Possible initialization status of a variable. When requested
by the user, this information is tracked and recorded in the DWARF
debug information, along with the variable's location. */
/* Codes that appear in the NOTE_KIND field for kinds of notes
that are not line numbers. These codes are all negative.
-
+
Notice that we do not try to use zero here for any of
the special note codes because sometimes the source line
actually can be zero! This happens (for example) when we
extern void init_rtlanal (void);
extern int rtx_cost (rtx, enum rtx_code, bool);
-extern int address_cost (rtx, enum machine_mode, bool);
+extern int address_cost (rtx, enum machine_mode, addr_space_t, bool);
extern unsigned int subreg_lsb (const_rtx);
extern unsigned int subreg_lsb_1 (enum machine_mode, enum machine_mode,
unsigned int);
_rtx->unchanging = (VAL); \
} \
} while (0)
+
+/* Valid for subregs which are SUBREG_PROMOTED_VAR_P(). In that case
+ this gives the necessary extensions:
+ 0 - signed
+ 1 - normal unsigned
+ -1 - pointer unsigned, which most often can be handled like unsigned
+ extension, except for generating instructions where we need to
+ emit special code (ptr_extend insns) on some architectures. */
+
#define SUBREG_PROMOTED_UNSIGNED_P(RTX) \
((RTL_FLAG_CHECK1("SUBREG_PROMOTED_UNSIGNED_P", (RTX), SUBREG)->volatil) \
? -1 : (int) (RTX)->unchanging)
XSTR (XCVECEXP (RTX, 4, N, ASM_OPERANDS), 0)
#define ASM_OPERANDS_INPUT_MODE(RTX, N) \
GET_MODE (XCVECEXP (RTX, 4, N, ASM_OPERANDS))
-#define ASM_OPERANDS_SOURCE_LOCATION(RTX) XCUINT (RTX, 5, ASM_OPERANDS)
+#define ASM_OPERANDS_LABEL_VEC(RTX) XCVEC (RTX, 5, ASM_OPERANDS)
+#define ASM_OPERANDS_LABEL_LENGTH(RTX) XCVECLEN (RTX, 5, ASM_OPERANDS)
+#define ASM_OPERANDS_LABEL(RTX, N) XCVECEXP (RTX, 5, N, ASM_OPERANDS)
+#define ASM_OPERANDS_SOURCE_LOCATION(RTX) XCUINT (RTX, 6, ASM_OPERANDS)
#define ASM_INPUT_SOURCE_LOCATION(RTX) XCUINT (RTX, 1, ASM_INPUT)
/* 1 if RTX is a mem that is statically allocated in read-only memory. */
RTX that is always a CONST_INT. */
#define MEM_OFFSET(RTX) (MEM_ATTRS (RTX) == 0 ? 0 : MEM_ATTRS (RTX)->offset)
+/* For a MEM rtx, the address space. */
+#define MEM_ADDR_SPACE(RTX) (MEM_ATTRS (RTX) == 0 ? ADDR_SPACE_GENERIC \
+ : MEM_ATTRS (RTX)->addrspace)
+
/* For a MEM rtx, the size in bytes of the MEM, if known, as an RTX that
is always a CONST_INT. */
#define MEM_SIZE(RTX) \
#define rtx_alloc(c) rtx_alloc_stat (c MEM_STAT_INFO)
extern rtvec rtvec_alloc (int);
+extern rtvec shallow_copy_rtvec (rtvec);
extern bool shared_const_p (const_rtx);
extern rtx copy_rtx (rtx);
extern void dump_rtx_statistics (void);
enum machine_mode);
extern int byte_lowpart_offset (enum machine_mode, enum machine_mode);
extern rtx make_safe_from (rtx, rtx);
-extern rtx convert_memory_address (enum machine_mode, rtx);
+extern rtx convert_memory_address_addr_space (enum machine_mode, rtx,
+ addr_space_t);
+#define convert_memory_address(to_mode,x) \
+ convert_memory_address_addr_space ((to_mode), (x), ADDR_SPACE_GENERIC)
extern rtx get_insns (void);
extern const char *get_insn_name (int);
extern rtx get_last_insn (void);
extern void push_to_sequence (rtx);
extern void push_to_sequence2 (rtx, rtx);
extern void end_sequence (void);
+extern double_int rtx_to_double_int (const_rtx);
+extern rtx immed_double_int_const (double_int, enum machine_mode);
extern rtx immed_double_const (HOST_WIDE_INT, HOST_WIDE_INT,
enum machine_mode);
unsigned int);
extern rtx simplify_gen_subreg (enum machine_mode, rtx, enum machine_mode,
unsigned int);
+extern rtx simplify_replace_fn_rtx (rtx, const_rtx,
+ rtx (*fn) (rtx, const_rtx, void *), void *);
extern rtx simplify_replace_rtx (rtx, const_rtx, rtx);
extern rtx simplify_rtx (const_rtx);
extern rtx avoid_constant_pool_reference (rtx);
extern int may_trap_p_1 (const_rtx, unsigned);
extern int may_trap_p (const_rtx);
extern int may_trap_or_fault_p (const_rtx);
+extern bool can_throw_internal (const_rtx);
+extern bool can_throw_external (const_rtx);
+extern bool insn_could_throw_p (const_rtx);
+extern bool insn_nothrow_p (const_rtx);
+extern bool can_nonlocal_goto (const_rtx);
+extern void copy_reg_eh_region_note_forward (rtx, rtx, rtx);
+extern void copy_reg_eh_region_note_backward(rtx, rtx, rtx);
extern int inequality_comparisons_p (const_rtx);
extern rtx replace_rtx (rtx, rtx, rtx);
extern int replace_label (rtx *, void *);
extern bool resize_reg_info (void);
/* Free up register info memory. */
extern void free_reg_info (void);
+extern void init_subregs_of_mode (void);
+extern void finish_subregs_of_mode (void);
/* recog.c */
+extern rtx extract_asm_operands (rtx);
extern int asm_noperands (const_rtx);
extern const char *decode_asm_operands (rtx, rtx *, rtx **, const char **,
enum machine_mode *, location_t *);
#define arg_pointer_rtx (global_rtl[GR_ARG_POINTER])
extern GTY(()) rtx pic_offset_table_rtx;
-extern GTY(()) rtx static_chain_rtx;
-extern GTY(()) rtx static_chain_incoming_rtx;
extern GTY(()) rtx return_address_pointer_rtx;
/* Include the RTL generation functions. */
extern void force_next_line_note (void);
extern void init_emit (void);
extern void init_emit_regs (void);
-extern void init_emit_once (int);
+extern void init_emit_once (void);
extern void push_topmost_sequence (void);
extern void pop_topmost_sequence (void);
extern void set_new_first_and_last_insn (rtx, rtx);
/* In varasm.c */
extern void init_varasm_once (void);
extern enum tls_model decl_default_tls_model (const_tree);
-
+
+extern rtx make_debug_expr_from_rtl (const_rtx);
+
/* In rtl.c */
extern void traverse_md_constants (int (*) (void **, void *), void *);
struct md_constant { char *name, *value; };
/* In predict.c */
extern void invert_br_probabilities (rtx);
extern bool expensive_function_p (int);
-/* In cfgexpand.c */
-extern void add_reg_br_prob_note (rtx last, int probability);
-extern rtx wrap_constant (enum machine_mode, rtx);
-extern rtx unwrap_constant (rtx);
/* In var-tracking.c */
extern unsigned int variable_tracking_main (void);
/* In final.c */
extern unsigned int compute_alignments (void);
+extern int asm_str_count (const char *templ);
\f
struct rtl_hooks
{
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