/* Structure used to describe the attributes of a MEM. These are hashed
so MEMs that the same attributes share a data structure. This means
- they cannot be modified in place. If any element is nonzero, it means
- the value of the corresponding attribute is unknown. */
-/* ALIGN and SIZE are the alignment and size of the MEM itself,
- while EXPR can describe a larger underlying object, which might have a
- stricter alignment; OFFSET is the offset of the MEM within that object. */
+ they cannot be modified in place. */
typedef struct GTY(()) mem_attrs
{
- tree expr; /* expr corresponding to MEM. */
- rtx offset; /* Offset from start of DECL, as CONST_INT. */
- 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). */
+ /* The expression that the MEM accesses, or null if not known.
+ This expression might be larger than the memory reference itself.
+ (In other words, the MEM might access only part of the object.) */
+ tree expr;
+
+ /* The offset of the memory reference from the start of EXPR.
+ Only valid if OFFSET_KNOWN_P. */
+ HOST_WIDE_INT offset;
+
+ /* The size of the memory reference in bytes. Only valid if
+ SIZE_KNOWN_P. */
+ HOST_WIDE_INT size;
+
+ /* The alias set of the memory reference. */
+ alias_set_type alias;
+
+ /* The alignment of the reference in bits. Always a multiple of
+ BITS_PER_UNIT. Note that EXPR may have a stricter alignment
+ than the memory reference itself. */
+ unsigned int align;
+
+ /* The address space that the memory reference uses. */
+ unsigned char addrspace;
+
+ /* True if OFFSET is known. */
+ bool offset_known_p;
+
+ /* True if SIZE is known. */
+ bool size_known_p;
} mem_attrs;
/* Structure used to describe the attributes of a REG in similar way as
mem_attrs *rt_mem;
reg_attrs *rt_reg;
struct constant_descriptor_rtx *rt_constant;
+ struct dw_cfi_struct *rt_cfi;
};
typedef union rtunion_def rtunion;
(JUMP_P (INSN) && (GET_CODE (PATTERN (INSN)) == ADDR_VEC || \
GET_CODE (PATTERN (INSN)) == ADDR_DIFF_VEC))
+/* Predicate yielding nonzero iff X is a return. */
+#define ANY_RETURN_P(X) ((X) == ret_rtx)
+
/* 1 if X is a unary operator. */
#define UNARY_P(X) \
#define XTREE(RTX, N) (RTL_CHECK1 (RTX, N, 't').rt_tree)
#define XBBDEF(RTX, N) (RTL_CHECK1 (RTX, N, 'B').rt_bb)
#define XTMPL(RTX, N) (RTL_CHECK1 (RTX, N, 'T').rt_str)
+#define XCFI(RTX, N) (RTL_CHECK1 (RTX, N, 'C').rt_cfi)
#define XVECEXP(RTX, N, M) RTVEC_ELT (XVEC (RTX, N), M)
#define XVECLEN(RTX, N) GET_NUM_ELEM (XVEC (RTX, N))
#define XCMODE(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_type)
#define XCTREE(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_tree)
#define XCBBDEF(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_bb)
+#define XCCFI(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_cfi)
#define XCCSELIB(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_cselib)
#define XCVECEXP(RTX, N, M, C) RTVEC_ELT (XCVEC (RTX, N, C), M)
but a value from enum reg_note. */
#define REG_NOTES(INSN) XEXP(INSN, 7)
+/* In an ENTRY_VALUE this is the DECL_INCOMING_RTL of the argument in
+ question. */
+#define ENTRY_VALUE_EXP(RTX) (RTL_CHECKC1 (RTX, 0, ENTRY_VALUE).rt_rtx)
+
enum reg_note
{
#define DEF_REG_NOTE(NAME) NAME,
#define NOTE_EH_HANDLER(INSN) XCINT (INSN, 4, NOTE)
#define NOTE_BASIC_BLOCK(INSN) XCBBDEF (INSN, 4, NOTE)
#define NOTE_VAR_LOCATION(INSN) XCEXP (INSN, 4, NOTE)
+#define NOTE_CFI(INSN) XCCFI (INSN, 4, NOTE)
+#define NOTE_LABEL_NUMBER(INSN) XCINT (INSN, 4, NOTE)
/* In a NOTE that is a line number, this is the line number.
Other kinds of NOTEs are identified by negative numbers here. */
/* VAR_DECL/PARM_DECL DEBUG_IMPLICIT_PTR takes address of. */
#define DEBUG_IMPLICIT_PTR_DECL(RTX) XCTREE (RTX, 0, DEBUG_IMPLICIT_PTR)
-/* 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. */
-enum var_init_status
-{
- VAR_INIT_STATUS_UNKNOWN,
- VAR_INIT_STATUS_UNINITIALIZED,
- VAR_INIT_STATUS_INITIALIZED
-};
+/* PARM_DECL DEBUG_PARAMETER_REF references. */
+#define DEBUG_PARAMETER_REF_DECL(RTX) XCTREE (RTX, 0, DEBUG_PARAMETER_REF)
/* Codes that appear in the NOTE_KIND field for kinds of notes
that are not line numbers. These codes are all negative.
in the block and provide defaults if none specified. */
#define REG_ATTRS(RTX) X0REGATTR (RTX, 2)
+#ifndef GENERATOR_FILE
/* For a MEM rtx, the alias set. If 0, this MEM is not in any alias
set, and may alias anything. Otherwise, the MEM can only alias
MEMs in a conflicting alias set. This value is set in a
language-dependent manner in the front-end, and should not be
altered in the back-end. These set numbers are tested with
alias_sets_conflict_p. */
-#define MEM_ALIAS_SET(RTX) (MEM_ATTRS (RTX) == 0 ? 0 : MEM_ATTRS (RTX)->alias)
+#define MEM_ALIAS_SET(RTX) (get_mem_attrs (RTX)->alias)
/* For a MEM rtx, the decl it is known to refer to, if it is known to
refer to part of a DECL. It may also be a COMPONENT_REF. */
-#define MEM_EXPR(RTX) (MEM_ATTRS (RTX) == 0 ? 0 : MEM_ATTRS (RTX)->expr)
+#define MEM_EXPR(RTX) (get_mem_attrs (RTX)->expr)
+
+/* For a MEM rtx, true if its MEM_OFFSET is known. */
+#define MEM_OFFSET_KNOWN_P(RTX) (get_mem_attrs (RTX)->offset_known_p)
-/* For a MEM rtx, the offset from the start of MEM_EXPR, if known, as a
- 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 offset from the start of MEM_EXPR. */
+#define MEM_OFFSET(RTX) (get_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)
+#define MEM_ADDR_SPACE(RTX) (get_mem_attrs (RTX)->addrspace)
+
+/* For a MEM rtx, true if its MEM_SIZE is known. */
+#define MEM_SIZE_KNOWN_P(RTX) (get_mem_attrs (RTX)->size_known_p)
-/* 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) \
-(MEM_ATTRS (RTX) != 0 ? MEM_ATTRS (RTX)->size \
- : GET_MODE (RTX) != BLKmode ? GEN_INT (GET_MODE_SIZE (GET_MODE (RTX))) \
- : 0)
+/* For a MEM rtx, the size in bytes of the MEM. */
+#define MEM_SIZE(RTX) (get_mem_attrs (RTX)->size)
/* For a MEM rtx, the alignment in bits. We can use the alignment of the
mode as a default when STRICT_ALIGNMENT, but not if not. */
-#define MEM_ALIGN(RTX) \
-(MEM_ATTRS (RTX) != 0 ? MEM_ATTRS (RTX)->align \
- : (STRICT_ALIGNMENT && GET_MODE (RTX) != BLKmode \
- ? GET_MODE_ALIGNMENT (GET_MODE (RTX)) : BITS_PER_UNIT))
+#define MEM_ALIGN(RTX) (get_mem_attrs (RTX)->align)
+#else
+#define MEM_ADDR_SPACE(RTX) ADDR_SPACE_GENERIC
+#endif
/* For a REG rtx, the decl it is known to refer to, if it is known to
refer to part of a DECL. */
/* In emit-rtl.c */
extern rtx operand_subword_force (rtx, unsigned int, enum machine_mode);
+extern bool paradoxical_subreg_p (const_rtx);
extern int subreg_lowpart_p (const_rtx);
extern unsigned int subreg_lowpart_offset (enum machine_mode,
enum machine_mode);
extern rtx get_pool_constant_mark (rtx, bool *);
extern enum machine_mode get_pool_mode (const_rtx);
extern rtx simplify_subtraction (rtx);
+extern void decide_function_section (tree);
/* In function.c */
extern rtx assign_stack_local (enum machine_mode, HOST_WIDE_INT, int);
extern rtx avoid_constant_pool_reference (rtx);
extern rtx delegitimize_mem_from_attrs (rtx);
extern bool mode_signbit_p (enum machine_mode, const_rtx);
+extern bool val_signbit_p (enum machine_mode, unsigned HOST_WIDE_INT);
+extern bool val_signbit_known_set_p (enum machine_mode,
+ unsigned HOST_WIDE_INT);
+extern bool val_signbit_known_clear_p (enum machine_mode,
+ unsigned HOST_WIDE_INT);
/* In reginfo.c */
extern enum machine_mode choose_hard_reg_mode (unsigned int, unsigned int,
extern enum reg_class reg_preferred_class (int);
extern enum reg_class reg_alternate_class (int);
-extern enum reg_class reg_cover_class (int);
+extern enum reg_class reg_allocno_class (int);
extern void setup_reg_classes (int, enum reg_class, enum reg_class,
enum reg_class);
{
GR_PC,
GR_CC0,
+ GR_RETURN,
GR_STACK_POINTER,
GR_FRAME_POINTER,
/* For register elimination to work properly these hard_frame_pointer_rtx,
/* Static hunks of RTL used by the aliasing code; these are treated
as persistent to avoid unnecessary RTL allocations. */
rtx x_static_reg_base_value[FIRST_PSEUDO_REGISTER];
+
+ /* The default memory attributes for each mode. */
+ struct mem_attrs *x_mode_mem_attrs[(int) MAX_MACHINE_MODE];
};
extern GTY(()) struct target_rtl default_target_rtl;
(this_target_rtl->x_return_address_pointer_rtx)
#define top_of_stack \
(this_target_rtl->x_top_of_stack)
+#define mode_mem_attrs \
+ (this_target_rtl->x_mode_mem_attrs)
/* Standard pieces of rtx, to be substituted directly into things. */
#define pc_rtx (global_rtl[GR_PC])
+#define ret_rtx (global_rtl[GR_RETURN])
#define cc0_rtx (global_rtl[GR_CC0])
/* All references to certain hard regs, except those created
#define hard_frame_pointer_rtx (global_rtl[GR_HARD_FRAME_POINTER])
#define arg_pointer_rtx (global_rtl[GR_ARG_POINTER])
+#ifndef GENERATOR_FILE
+/* Return the attributes of a MEM rtx. */
+static inline struct mem_attrs *
+get_mem_attrs (const_rtx x)
+{
+ struct mem_attrs *attrs;
+
+ attrs = MEM_ATTRS (x);
+ if (!attrs)
+ attrs = mode_mem_attrs[(int) GET_MODE (x)];
+ return attrs;
+}
+#endif
+
/* Include the RTL generation functions. */
#ifndef GENERATOR_FILE
/* In jump.c */
extern int comparison_dominates_p (enum rtx_code, enum rtx_code);
+extern bool jump_to_label_p (rtx);
extern int condjump_p (const_rtx);
extern int any_condjump_p (const_rtx);
extern int any_uncondjump_p (const_rtx);
extern void redirect_jump_2 (rtx, rtx, rtx, int, int);
extern int redirect_jump (rtx, rtx, int);
extern void rebuild_jump_labels (rtx);
+extern void rebuild_jump_labels_chain (rtx);
extern rtx reversed_comparison (const_rtx, enum machine_mode);
extern enum rtx_code reversed_comparison_code (const_rtx, const_rtx);
extern enum rtx_code reversed_comparison_code_parts (enum rtx_code, const_rtx,
/* In expr.c */
extern rtx move_by_pieces (rtx, rtx, unsigned HOST_WIDE_INT,
unsigned int, int);
+extern int fixup_args_size_notes (rtx, rtx, int);
/* In cfgrtl.c */
extern void print_rtl_with_bb (FILE *, const_rtx);
/* In reginfo.c */
extern int reg_classes_intersect_p (reg_class_t, reg_class_t);
extern int reg_class_subset_p (reg_class_t, reg_class_t);
-extern void globalize_reg (int);
+extern void globalize_reg (tree, int);
extern void init_reg_modes_target (void);
extern void init_regs (void);
extern void reinit_regs (void);
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