#undef ABS /* Likewise. */
#undef PC /* Likewise. */
-/* Value used by some passes to "recognize" noop moves as valid instructions.
- */
+/* Value used by some passes to "recognize" noop moves as valid
+ instructions. */
#define NOOP_MOVE_INSN_CODE INT_MAX
/* Register Transfer Language EXPRESSIONS CODES */
unsigned min_align: 8;
/* Flags: */
unsigned base_after_vec: 1; /* BASE is after the ADDR_DIFF_VEC. */
- unsigned min_after_vec: 1; /* minimum address target label is after the ADDR_DIFF_VEC. */
- unsigned max_after_vec: 1; /* maximum address target label is after the ADDR_DIFF_VEC. */
- unsigned min_after_base: 1; /* minimum address target label is after BASE. */
- unsigned max_after_base: 1; /* maximum address target label is after BASE. */
+ unsigned min_after_vec: 1; /* minimum address target label is
+ after the ADDR_DIFF_VEC. */
+ unsigned max_after_vec: 1; /* maximum address target label is
+ after the ADDR_DIFF_VEC. */
+ unsigned min_after_base: 1; /* minimum address target label is
+ after BASE. */
+ unsigned max_after_base: 1; /* maximum address target label is
+ after BASE. */
/* Set by the actual branch shortening process - ONLY WHEN OPTIMIZING - : */
unsigned offset_unsigned: 1; /* offsets have to be treated as unsigned. */
unsigned : 2;
unsigned scale : 8;
} addr_diff_vec_flags;
+/* 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. */
+typedef struct
+{
+ HOST_WIDE_INT alias; /* Memory alias set. */
+ 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. */
+ unsigned int align; /* Alignment of MEM in bits. */
+} mem_attrs;
+
/* Common union for an element of an rtx. */
typedef union rtunion_def
struct bitmap_head_def *rtbit;
tree rttree;
struct basic_block_def *bb;
+ mem_attrs *rtmem;
} rtunion;
/* RTL expression ("rtx"). */
/* 1 in an INSN if it can alter flow of control
within this function.
- LINK_COST_ZERO in an INSN_LIST. */
+ MEM_KEEP_ALIAS_SET_P in a MEM.
+ LINK_COST_ZERO in an INSN_LIST.
+ SET_IS_RETURN_P in a SET. */
unsigned int jump : 1;
/* 1 in an INSN if it can call another function.
LINK_COST_FREE in an INSN_LIST. */
from the target of a branch. Valid from reorg until end of compilation;
cleared before used.
1 in an INSN if this insn is dead code. Valid only during
- dead-code elimination phase; cleared before use. */
+ dead-code elimination phase; cleared before use. */
unsigned int in_struct : 1;
/* 1 if this rtx is used. This is used for copying shared structure.
See `unshare_all_rtl'.
#define X0BBDEF(RTX, N) (RTL_CHECK1(RTX, N, '0').bb)
#define X0ADVFLAGS(RTX, N) (RTL_CHECK1(RTX, N, '0').rt_addr_diff_vec_flags)
#define X0CSELIB(RTX, N) (RTL_CHECK1(RTX, N, '0').rt_cselib)
+#define X0MEMATTR(RTX, N) (RTL_CHECK1(RTX, N, '0').rtmem)
#define XCWINT(RTX, N, C) (RTL_CHECKC1(RTX, N, C).rtwint)
#define XCINT(RTX, N, C) (RTL_CHECKC1(RTX, N, C).rtint)
#define SIBLING_CALL_P(INSN) ((INSN)->jump)
/* 1 if insn is a branch that should not unconditionally execute its
- delay slots, i.e., it is an annulled branch. */
+ delay slots, i.e., it is an annulled branch. */
#define INSN_ANNULLED_BRANCH_P(INSN) ((INSN)->unchanging)
-/* 1 if insn is a dead code. Valid only for dead-code elimination phase. */
+/* 1 if insn is a dead code. Valid only for dead-code elimination phase. */
#define INSN_DEAD_CODE_P(INSN) ((INSN)->in_struct)
/* 1 if insn is in a delay slot and is from the target of the branch. If
REG_SETJMP,
/* Indicate calls that always returns. */
- REG_ALWAYS_RETURN
+ REG_ALWAYS_RETURN,
+
+ /* Indicate that the memory load references a vtable. The expression
+ is of the form (plus (symbol_ref vtable_sym) (const_int offset)). */
+ REG_VTABLE_REF
};
/* The base value for branch probability notes. */
NOTE_INSN_BLOCK_BEG and NOTE_INSN_BLOCK_END notes. (We avoid lots of casts
between ints and pointers if we use a different macro for the block number.)
The NOTE_INSN_RANGE_{START,END} and NOTE_INSN_LIVE notes record their
- information as a rtx in the field. */
+ information as an rtx in the field. */
#define NOTE_SOURCE_FILE(INSN) XCSTR(INSN, 3, NOTE)
#define NOTE_BLOCK(INSN) XCTREE(INSN, 3, NOTE)
/* Generated whenever a duplicate line number note is output. For example,
one is output after the end of an inline function, in order to prevent
- the line containing the inline call from being counted twice in gcov. */
+ the line containing the inline call from being counted twice in gcov. */
NOTE_INSN_REPEATED_LINE_NUMBER,
/* Start/end of a live range region, where pseudos allocated on the stack
/* Record which registers are currently live. Uses NOTE_LIVE_INFO. */
NOTE_INSN_LIVE,
- /* Record the struct for the following basic block. Uses NOTE_BASIC_BLOCK. */
+ /* Record the struct for the following basic block. Uses NOTE_BASIC_BLOCK. */
NOTE_INSN_BASIC_BLOCK,
/* Record the expected value of a register at a location. Uses
For a float, the number of ints varies,
and CONST_DOUBLE_LOW is the one that should come first *in memory*.
So use &CONST_DOUBLE_LOW(r) as the address of an array of ints. */
-#define CONST_DOUBLE_LOW(r) XCWINT (r, 2, CONST_DOUBLE)
-#define CONST_DOUBLE_HIGH(r) XCWINT (r, 3, CONST_DOUBLE)
+#define CONST_DOUBLE_LOW(r) XCWINT (r, 1, CONST_DOUBLE)
+#define CONST_DOUBLE_HIGH(r) XCWINT (r, 2, CONST_DOUBLE)
/* Link for chain of all CONST_DOUBLEs in use in current function. */
-#define CONST_DOUBLE_CHAIN(r) XCEXP (r, 1, CONST_DOUBLE)
-/* The MEM which represents this CONST_DOUBLE's value in memory,
- or const0_rtx if no MEM has been made for it yet,
- or cc0_rtx if it is not on the chain. */
-#define CONST_DOUBLE_MEM(r) XCEXP (r, 0, CONST_DOUBLE)
+#define CONST_DOUBLE_CHAIN(r) XCEXP (r, 0, CONST_DOUBLE)
/* For a SUBREG rtx, SUBREG_REG extracts the value we want a subreg of.
SUBREG_BYTE extracts the byte-number. */
#define ASM_OPERANDS_SOURCE_FILE(RTX) XCSTR ((RTX), 5, ASM_OPERANDS)
#define ASM_OPERANDS_SOURCE_LINE(RTX) XCINT ((RTX), 6, ASM_OPERANDS)
+/* For a MEM RTX, 1 if we should keep the alias set for this mem
+ unchanged when we access a component. Set to 1, or example, when we
+ are already in a non-addressable component of an aggregate. */
+#define MEM_KEEP_ALIAS_SET_P(RTX) ((RTX)->jump)
+
/* For a MEM rtx, 1 if it's a volatile reference.
Also in an ASM_OPERANDS rtx. */
#define MEM_VOLATILE_P(RTX) ((RTX)->volatil)
} \
} while (0)
+/* The memory attribute block. We provide access macros for each value
+ in the block and provide defaults if none specified. */
+#define MEM_ATTRS(RTX) X0MEMATTR (RTX, 1)
+
/* 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 the same alias set. This value is set in a
some front-ends, these numbers may correspond in some way to types,
or other language-level entities, but they need not, and the
back-end makes no such assumptions. */
-#define MEM_ALIAS_SET(RTX) XCWINT(RTX, 1, MEM)
+#define MEM_ALIAS_SET(RTX) (MEM_ATTRS (RTX) == 0 ? 0 : 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)
+
+/* 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 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 alignment in bits. */
+#define MEM_ALIGN(RTX) \
+(MEM_ATTRS (RTX) != 0 ? MEM_ATTRS (RTX)->align \
+ : GET_MODE (RTX) != BLKmode ? GET_MODE_ALIGNMENT (GET_MODE (RTX)) \
+ : BITS_PER_UNIT)
+
/* Copy the attributes that apply to memory locations from RHS to LHS. */
-#define MEM_COPY_ATTRIBUTES(LHS, RHS) \
- (MEM_VOLATILE_P (LHS) = MEM_VOLATILE_P (RHS), \
- MEM_IN_STRUCT_P (LHS) = MEM_IN_STRUCT_P (RHS), \
- MEM_SCALAR_P (LHS) = MEM_SCALAR_P (RHS), \
- MEM_ALIAS_SET (LHS) = MEM_ALIAS_SET (RHS), \
- RTX_UNCHANGING_P (LHS) = RTX_UNCHANGING_P (RHS))
+#define MEM_COPY_ATTRIBUTES(LHS, RHS) \
+ (MEM_VOLATILE_P (LHS) = MEM_VOLATILE_P (RHS), \
+ MEM_IN_STRUCT_P (LHS) = MEM_IN_STRUCT_P (RHS), \
+ MEM_SCALAR_P (LHS) = MEM_SCALAR_P (RHS), \
+ RTX_UNCHANGING_P (LHS) = RTX_UNCHANGING_P (RHS), \
+ MEM_KEEP_ALIAS_SET_P (LHS) = MEM_KEEP_ALIAS_SET_P (RHS), \
+ MEM_ATTRS (LHS) = MEM_ATTRS (RHS))
/* For a LABEL_REF, 1 means that this reference is to a label outside the
loop containing the reference. */
and SET_SRC is the value it is set to. */
#define SET_DEST(RTX) XC2EXP(RTX, 0, SET, CLOBBER)
#define SET_SRC(RTX) XCEXP(RTX, 1, SET)
+#define SET_IS_RETURN_P(RTX) ((RTX)->jump)
/* For a TRAP_IF rtx, TRAP_CONDITION is an expression. */
#define TRAP_CONDITION(RTX) XCEXP(RTX, 0, TRAP_IF)
/* Don't continue this line--convex cc version 4.1 would lose. */
#if (defined (HAVE_PRE_INCREMENT) || defined (HAVE_PRE_DECREMENT) || defined (HAVE_POST_INCREMENT) || defined (HAVE_POST_DECREMENT))
-#define FIND_REG_INC_NOTE(insn, reg) (find_reg_note ((insn), REG_INC, (reg)))
+#define FIND_REG_INC_NOTE(insn, reg) \
+ (reg != NULL_RTX && REG_P ((rtx) (reg)) \
+ ? find_regno_note ((insn), REG_INC, REGNO ((rtx) (reg))) \
+ : find_reg_note ((insn), REG_INC, (reg)))
#else
#define FIND_REG_INC_NOTE(insn, reg) 0
#endif
/* For RANGE_{START,END} notes, a unique # to identify this range. */
#define RANGE_INFO_UNIQUE(INSN) XCINT (INSN, 5, RANGE_INFO)
-/* For RANGE_{START,END} notes, the basic block # the range starts with. */
+/* For RANGE_{START,END} notes, the basic block # the range starts with. */
#define RANGE_INFO_BB_START(INSN) XCINT (INSN, 6, RANGE_INFO)
-/* For RANGE_{START,END} notes, the basic block # the range ends with. */
+/* For RANGE_{START,END} notes, the basic block # the range ends with. */
#define RANGE_INFO_BB_END(INSN) XCINT (INSN, 7, RANGE_INFO)
/* For RANGE_{START,END} notes, the loop depth the range is in. */
#define RANGE_REG_DEATHS(INSN,N) XINT (XCVECEXP (INSN, 2, N, RANGE_INFO), 4)
/* Whether the original value is needed to be copied into the range register at
- the start of the range. */
+ the start of the range. */
#define RANGE_REG_COPY_FLAGS(INSN,N) XINT (XCVECEXP (INSN, 2, N, RANGE_INFO), 5)
/* # of insns the register copy is live over. */
/* In varasm.c */
extern rtx immed_double_const PARAMS ((HOST_WIDE_INT, HOST_WIDE_INT, enum machine_mode));
+extern rtx mem_for_const_double PARAMS ((rtx));
extern rtx force_const_mem PARAMS ((enum machine_mode, rtx));
/* In varasm.c */
HOST_WIDE_INT, int));
extern rtx assign_stack_temp PARAMS ((enum machine_mode,
HOST_WIDE_INT, int));
+extern rtx assign_stack_temp_for_type PARAMS ((enum machine_mode,
+ HOST_WIDE_INT, int, tree));
extern rtx assign_temp PARAMS ((tree, int, int, int));
/* In emit-rtl.c */
extern rtx emit_insn_before PARAMS ((rtx, rtx));
extern void cleanup_barriers PARAMS ((void));
/* In jump.c */
-extern void squeeze_notes PARAMS ((rtx *, rtx *));
-extern rtx delete_insn PARAMS ((rtx));
+extern bool squeeze_notes PARAMS ((rtx *, rtx *));
+extern rtx delete_related_insns PARAMS ((rtx));
extern void delete_jump PARAMS ((rtx));
extern void delete_barrier PARAMS ((rtx));
extern rtx get_label_before PARAMS ((rtx));
unsigned int));
/* In emit-rtl.c */
-extern void set_unique_reg_note PARAMS ((rtx, enum reg_note, rtx));
+extern rtx set_unique_reg_note PARAMS ((rtx, enum reg_note, rtx));
/* Functions in rtlanal.c */
extern int rtx_addr_varies_p PARAMS ((rtx, int));
extern HOST_WIDE_INT get_integer_term PARAMS ((rtx));
extern rtx get_related_value PARAMS ((rtx));
+extern rtx get_jump_table_offset PARAMS ((rtx, rtx *));
extern int reg_mentioned_p PARAMS ((rtx, rtx));
extern int count_occurrences PARAMS ((rtx, rtx, int));
extern int reg_referenced_p PARAMS ((rtx, rtx));
void free_INSN_LIST_node PARAMS ((rtx));
rtx alloc_INSN_LIST PARAMS ((rtx, rtx));
rtx alloc_EXPR_LIST PARAMS ((int, rtx, rtx));
-void clear_log_links PARAMS ((rtx));
/* regclass.c */
hard frame pointer and the automatic variables are separated by an amount
that cannot be determined until after register allocation. We can assume
that in this case ELIMINABLE_REGS will be defined, one action of which
- will be to eliminate FRAME_POINTER_REGNUM into HARD_FRAME_POINTER_REGNUM. */
+ will be to eliminate FRAME_POINTER_REGNUM into HARD_FRAME_POINTER_REGNUM. */
#ifndef HARD_FRAME_POINTER_REGNUM
#define HARD_FRAME_POINTER_REGNUM FRAME_POINTER_REGNUM
#endif
add to this list, modify special_rtx in gengenrtl.c as well. You
should also modify gen_rtx to use the special function. */
-extern rtx gen_rtx_CONST_DOUBLE PARAMS ((enum machine_mode, rtx,
+extern rtx gen_rtx_CONST_DOUBLE PARAMS ((enum machine_mode,
HOST_WIDE_INT, HOST_WIDE_INT));
extern rtx gen_rtx_CONST_INT PARAMS ((enum machine_mode, HOST_WIDE_INT));
extern rtx gen_raw_REG PARAMS ((enum machine_mode, int));
#define LAST_VIRTUAL_REGISTER ((FIRST_VIRTUAL_REGISTER) + 4)
+/* Nonzero if REGNUM is a pointer into the stack frame. */
+#define REGNO_PTR_FRAME_P(REGNUM) \
+ ((REGNUM) == STACK_POINTER_REGNUM \
+ || (REGNUM) == FRAME_POINTER_REGNUM \
+ || (REGNUM) == HARD_FRAME_POINTER_REGNUM \
+ || (REGNUM) == ARG_POINTER_REGNUM \
+ || ((REGNUM) >= FIRST_VIRTUAL_REGISTER \
+ && (REGNUM) <= LAST_VIRTUAL_REGISTER))
+
/* REGNUM never really appearing in the INSN stream. */
#define INVALID_REGNUM (~(unsigned int)0)
extern void rebuild_jump_labels PARAMS ((rtx));
extern void thread_jumps PARAMS ((rtx, int, int));
extern int rtx_equal_for_thread_p PARAMS ((rtx, rtx, rtx));
-extern int can_reverse_comparison_p PARAMS ((rtx, rtx));
extern enum rtx_code reversed_comparison_code PARAMS ((rtx, rtx));
extern enum rtx_code reversed_comparison_code_parts PARAMS ((enum rtx_code,
rtx, rtx, rtx));
extern void purge_line_number_notes PARAMS ((rtx));
extern void copy_loop_headers PARAMS ((rtx));
-/* In emit-rtl.c. */
+/* In emit-rtl.c. */
extern int max_reg_num PARAMS ((void));
extern int max_label_num PARAMS ((void));
extern int get_first_label_num PARAMS ((void));
extern void mark_user_reg PARAMS ((rtx));
extern void reset_used_flags PARAMS ((rtx));
extern void reorder_insns PARAMS ((rtx, rtx, rtx));
+extern void reorder_insns_nobb PARAMS ((rtx, rtx, rtx));
extern int get_max_uid PARAMS ((void));
extern int in_sequence_p PARAMS ((void));
extern void force_next_line_note PARAMS ((void));
void restore_line_number_status PARAMS ((int old_value));
extern void renumber_insns PARAMS ((FILE *));
extern void remove_unnecessary_notes PARAMS ((void));
+extern rtx delete_insn PARAMS ((rtx));
+extern void delete_insn_chain PARAMS ((rtx, rtx));
/* In combine.c */
extern int combine_instructions PARAMS ((rtx, unsigned int));
extern void dump_combine_total_stats PARAMS ((FILE *));
#endif
-/* In sched.c. */
+/* In sched.c. */
#ifdef BUFSIZ
extern void schedule_insns PARAMS ((FILE *));
extern void schedule_ebbs PARAMS ((FILE *));
extern void debug_rtx_range PARAMS ((rtx, rtx));
extern rtx debug_rtx_find PARAMS ((rtx, int));
#ifdef BUFSIZ
+extern void print_mem_expr PARAMS ((FILE *, tree));
extern void print_rtl PARAMS ((FILE *, rtx));
extern void print_simple_rtl PARAMS ((FILE *, rtx));
extern int print_rtl_single PARAMS ((FILE *, rtx));
unsigned int));
/* In flow.c */
-extern void recompute_reg_usage PARAMS ((rtx, int));
+extern void recompute_reg_usage PARAMS ((rtx, int));
+extern int initialize_uninitialized_subregs PARAMS ((void));
#ifdef BUFSIZ
-extern void print_rtl_with_bb PARAMS ((FILE *, rtx));
-extern void dump_flow_info PARAMS ((FILE *));
+extern void print_rtl_with_bb PARAMS ((FILE *, rtx));
+extern void dump_flow_info PARAMS ((FILE *));
#endif
/* In expmed.c */
LCT_PURE_MAKE_BLOCK = 4,
LCT_NORETURN = 5,
LCT_THROW = 6,
- LCT_ALWAYS_RETURN = 7
+ LCT_ALWAYS_RETURN = 7,
+ LCT_RETURNS_TWICE = 8
};
extern void emit_library_call PARAMS ((rtx, enum libcall_type,
#define abort() fancy_abort (__FILE__, __LINE__, __FUNCTION__)
/* In alias.c */
+extern void clear_reg_alias_info PARAMS ((rtx));
extern rtx canon_rtx PARAMS ((rtx));
extern int true_dependence PARAMS ((rtx, enum machine_mode, rtx,
int (*)(rtx, int)));
extern void init_alias_analysis PARAMS ((void));
extern void end_alias_analysis PARAMS ((void));
extern rtx addr_side_effect_eval PARAMS ((rtx, int, int));
-extern void set_mem_alias_set PARAMS ((rtx, HOST_WIDE_INT));
/* In sibcall.c */
typedef enum {
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