diff options
Diffstat (limited to 'gcc/rtl.h')
| -rw-r--r-- | gcc/rtl.h | 68 |
1 files changed, 55 insertions, 13 deletions
@@ -559,6 +559,7 @@ class GTY(()) rtx_nonjump_insn : public rtx_insn class GTY(()) rtx_jump_insn : public rtx_insn { +public: /* No extra fields, but adds the invariant: JUMP_P (X) aka (GET_CODE (X) == JUMP_INSN) i.e. an instruction that can possibly jump. @@ -566,6 +567,21 @@ class GTY(()) rtx_jump_insn : public rtx_insn This is an instance of: DEF_RTL_EXPR(JUMP_INSN, "jump_insn", "uuBeiie0", RTX_INSN) from rtl.def. */ + + /* Returns jump target of this instruction. The returned value is not + necessarily a code label: it may also be a RETURN or SIMPLE_RETURN + expression. Also, when the code label is marked "deleted", it is + replaced by a NOTE. In some cases the value is NULL_RTX. */ + + inline rtx jump_label () const; + + /* Returns jump target cast to rtx_code_label *. */ + + inline rtx_code_label *jump_target () const; + + /* Set jump target. */ + + inline void set_jump_target (rtx_code_label *); }; class GTY(()) rtx_call_insn : public rtx_insn @@ -856,6 +872,14 @@ is_a_helper <rtx_jump_insn *>::test (rtx rt) template <> template <> inline bool +is_a_helper <rtx_jump_insn *>::test (rtx_insn *insn) +{ + return JUMP_P (insn); +} + +template <> +template <> +inline bool is_a_helper <rtx_call_insn *>::test (rtx rt) { return CALL_P (rt); @@ -1701,6 +1725,23 @@ inline rtx_insn *JUMP_LABEL_AS_INSN (const rtx_insn *insn) return safe_as_a <rtx_insn *> (JUMP_LABEL (insn)); } +/* Methods of rtx_jump_insn. */ + +inline rtx rtx_jump_insn::jump_label () const +{ + return JUMP_LABEL (this); +} + +inline rtx_code_label *rtx_jump_insn::jump_target () const +{ + return safe_as_a <rtx_code_label *> (JUMP_LABEL (this)); +} + +inline void rtx_jump_insn::set_jump_target (rtx_code_label *target) +{ + JUMP_LABEL (this) = target; +} + /* Once basic blocks are found, each CODE_LABEL starts a chain that goes through all the LABEL_REFs that jump to that label. The chain eventually winds up at the CODE_LABEL: it is circular. */ @@ -2699,9 +2740,9 @@ extern void decide_function_section (tree); extern rtx_insn *emit_insn_before (rtx, rtx); extern rtx_insn *emit_insn_before_noloc (rtx, rtx_insn *, basic_block); extern rtx_insn *emit_insn_before_setloc (rtx, rtx_insn *, int); -extern rtx_insn *emit_jump_insn_before (rtx, rtx); -extern rtx_insn *emit_jump_insn_before_noloc (rtx, rtx_insn *); -extern rtx_insn *emit_jump_insn_before_setloc (rtx, rtx_insn *, int); +extern rtx_jump_insn *emit_jump_insn_before (rtx, rtx); +extern rtx_jump_insn *emit_jump_insn_before_noloc (rtx, rtx_insn *); +extern rtx_jump_insn *emit_jump_insn_before_setloc (rtx, rtx_insn *, int); extern rtx_insn *emit_call_insn_before (rtx, rtx_insn *); extern rtx_insn *emit_call_insn_before_noloc (rtx, rtx_insn *); extern rtx_insn *emit_call_insn_before_setloc (rtx, rtx_insn *, int); @@ -2709,14 +2750,14 @@ extern rtx_insn *emit_debug_insn_before (rtx, rtx_insn *); extern rtx_insn *emit_debug_insn_before_noloc (rtx, rtx); extern rtx_insn *emit_debug_insn_before_setloc (rtx, rtx, int); extern rtx_barrier *emit_barrier_before (rtx); -extern rtx_insn *emit_label_before (rtx, rtx_insn *); +extern rtx_code_label *emit_label_before (rtx, rtx_insn *); extern rtx_note *emit_note_before (enum insn_note, rtx_insn *); extern rtx_insn *emit_insn_after (rtx, rtx); extern rtx_insn *emit_insn_after_noloc (rtx, rtx, basic_block); extern rtx_insn *emit_insn_after_setloc (rtx, rtx, int); -extern rtx_insn *emit_jump_insn_after (rtx, rtx); -extern rtx_insn *emit_jump_insn_after_noloc (rtx, rtx); -extern rtx_insn *emit_jump_insn_after_setloc (rtx, rtx, int); +extern rtx_jump_insn *emit_jump_insn_after (rtx, rtx); +extern rtx_jump_insn *emit_jump_insn_after_noloc (rtx, rtx); +extern rtx_jump_insn *emit_jump_insn_after_setloc (rtx, rtx, int); extern rtx_insn *emit_call_insn_after (rtx, rtx); extern rtx_insn *emit_call_insn_after_noloc (rtx, rtx); extern rtx_insn *emit_call_insn_after_setloc (rtx, rtx, int); @@ -2730,7 +2771,7 @@ extern rtx_insn *emit_insn (rtx); extern rtx_insn *emit_debug_insn (rtx); extern rtx_insn *emit_jump_insn (rtx); extern rtx_insn *emit_call_insn (rtx); -extern rtx_insn *emit_label (rtx); +extern rtx_code_label *emit_label (rtx); extern rtx_jump_table_data *emit_jump_table_data (rtx); extern rtx_barrier *emit_barrier (void); extern rtx_note *emit_note (enum insn_note); @@ -3066,6 +3107,7 @@ extern GTY(()) rtx pc_rtx; extern GTY(()) rtx cc0_rtx; extern GTY(()) rtx ret_rtx; extern GTY(()) rtx simple_return_rtx; +extern GTY(()) rtx_insn *invalid_insn_rtx; /* If HARD_FRAME_POINTER_REGNUM is defined, then a special dummy reg is used to represent the frame pointer. This is because the @@ -3397,14 +3439,14 @@ extern int eh_returnjump_p (rtx_insn *); extern int onlyjump_p (const rtx_insn *); extern int only_sets_cc0_p (const_rtx); extern int sets_cc0_p (const_rtx); -extern int invert_jump_1 (rtx_insn *, rtx); -extern int invert_jump (rtx_insn *, rtx, int); +extern int invert_jump_1 (rtx_jump_insn *, rtx); +extern int invert_jump (rtx_jump_insn *, rtx, int); extern int rtx_renumbered_equal_p (const_rtx, const_rtx); extern int true_regnum (const_rtx); extern unsigned int reg_or_subregno (const_rtx); extern int redirect_jump_1 (rtx_insn *, rtx); -extern void redirect_jump_2 (rtx_insn *, rtx, rtx, int, int); -extern int redirect_jump (rtx_insn *, rtx, int); +extern void redirect_jump_2 (rtx_jump_insn *, rtx, rtx, int, int); +extern int redirect_jump (rtx_jump_insn *, rtx, int); extern void rebuild_jump_labels (rtx_insn *); extern void rebuild_jump_labels_chain (rtx_insn *); extern rtx reversed_comparison (const_rtx, machine_mode); @@ -3487,7 +3529,7 @@ extern void print_inline_rtx (FILE *, const_rtx, int); not be in sched-vis.c but in rtl.c, because they are not only used by the scheduler anymore but for all "slim" RTL dumping. */ extern void dump_value_slim (FILE *, const_rtx, int); -extern void dump_insn_slim (FILE *, const_rtx); +extern void dump_insn_slim (FILE *, const rtx_insn *); extern void dump_rtl_slim (FILE *, const rtx_insn *, const rtx_insn *, int, int); extern void print_value (pretty_printer *, const_rtx, int); |