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flow.c (redirect_edge_succ_nodup): Return new edge.

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* flow.c (redirect_edge_succ_nodup): Return new edge.
        (try_simplify_condjump): Use new edge.
        * basic-block.h (redirect_edge_succ_nodup): Update prototype.

From-SVN: r45222
This commit is contained in:
Richard Henderson 2001-08-27 18:32:10 -07:00
parent b5a696fb77
commit c23bb84bd3
3 changed files with 17 additions and 9 deletions
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14
gcc/ChangeLog
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@ -1,5 +1,9 @@
2001-08-27 Roman Zippel <zippel@linux-m68k.org>
* flow.c (redirect_edge_succ_nodup): Return new edge.
(try_simplify_condjump): Use new edge.
* basic-block.h (redirect_edge_succ_nodup): Update prototype.
* cse.c (cse_basic_block): Skip note instructions.
2001-08-27 Richard Henderson <rth@redhat.com>
@ -67,7 +71,7 @@
2001-08-27 Vladimir Makarov <vmakarov@touchme.toronto.redhat.com>
* rtl.def (DEFINE_CPU_UNIT, DEFINE_QUERY_CPU_UNIT, EXCLUSION_SET,
* rtl.def (DEFINE_CPU_UNIT, DEFINE_QUERY_CPU_UNIT, EXCLUSION_SET,
PRESENCE_SET, ABSENCE_SET, DEFINE_BYPASS, DEFINE_AUTOMATON,
AUTOMATA_OPTION, DEFINE_RESERVATION, DEFINE_INSN_RESERVATION): New
RTL constructions.
@ -92,7 +96,7 @@
* rtl.h (LINK_COST_ZERO, LINK_COST_FREE): Remove them.
* sched-int.h: (curr_state): Add the external definition for
* sched-int.h: (curr_state): Add the external definition for
automaton pipeline interface.
(haifa_insn_data): Add comments for members blockage and units.
@ -111,7 +115,7 @@
first_cycle_multipass_dfa_lookahead, init_dfa_bubbles,
dfa_bubble): New members in gcc_target.sched.
* haifa-sched.c (insert_schedule_bubbles_p): New variable.
* haifa-sched.c (insert_schedule_bubbles_p): New variable.
(MAX_INSN_QUEUE_INDEX): New macro for automaton interface.
(insn_queue): Redefine it as pointer to array.
(NEXT_Q, NEXT_Q_AFTER): Use MAX_INSN_QUEUE_INDEX instead of
@ -153,7 +157,7 @@
(get_visual_tbl_length): Add code for automaton interface.
(target_units, print_block_visualization): Add comments.
* Makefile.in (GETRUNTIME, HASHTAB, HOST_GETRUNTIME, HOST_HASHTAB,
* Makefile.in (GETRUNTIME, HASHTAB, HOST_GETRUNTIME, HOST_HASHTAB,
USE_HOST_GETRUNTIME, USE_HOST_HASHTAB, HOST_VARRAY): New variables.
(sched-rgn.o, sched-vis.o): Add new dependency file target.h.
(getruntime.o, genautomata.o): New entries.

2
gcc/basic-block.h
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@ -303,7 +303,7 @@ extern void make_edge PARAMS ((sbitmap *, basic_block,
basic_block, int));
extern void remove_edge PARAMS ((edge));
extern void redirect_edge_succ PARAMS ((edge, basic_block));
extern void redirect_edge_succ_nodup PARAMS ((edge, basic_block));
extern edge redirect_edge_succ_nodup PARAMS ((edge, basic_block));
extern void redirect_edge_pred PARAMS ((edge, basic_block));
extern void create_basic_block PARAMS ((int, rtx, rtx, rtx));
extern int flow_delete_block PARAMS ((basic_block));

10
gcc/flow.c
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@ -3335,8 +3335,10 @@ try_simplify_condjump (cbranch_block)
/* Success. Update the CFG to match. Note that after this point
the edge variable names appear backwards; the redirection is done
this way to preserve edge profile data. */
redirect_edge_succ_nodup (cbranch_jump_edge, cbranch_dest_block);
redirect_edge_succ_nodup (cbranch_fallthru_edge, jump_dest_block);
cbranch_jump_edge = redirect_edge_succ_nodup (cbranch_jump_edge,
cbranch_dest_block);
cbranch_fallthru_edge = redirect_edge_succ_nodup (cbranch_fallthru_edge,
jump_dest_block);
cbranch_jump_edge->flags |= EDGE_FALLTHRU;
cbranch_fallthru_edge->flags &= ~EDGE_FALLTHRU;
@ -9029,7 +9031,7 @@ redirect_edge_succ (e, new_succ)
/* Like previous but avoid possible dupplicate edge. */
void
edge
redirect_edge_succ_nodup (e, new_succ)
edge e;
basic_block new_succ;
@ -9045,9 +9047,11 @@ redirect_edge_succ_nodup (e, new_succ)
s->probability += e->probability;
s->count += e->count;
remove_edge (e);
e = s;
}
else
redirect_edge_succ (e, new_succ);
return e;
}
/* Redirect an edge's predecessor from one block to another. */