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flow.c (split_edge): Handle insertion on a fallthrough edge which has the EXIT_BLOCK as a dest.

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Tue Sep 21 14:55:11 EDT 1999  Andrew MacLeod  <amacleod@cygnus.com>

	* flow.c (split_edge): Handle insertion on a fallthrough edge which
	has the EXIT_BLOCK as a dest.

From-SVN: r29556
This commit is contained in:
Andrew MacLeod 1999-09-21 18:57:12 +00:00 committed by Andrew Macleod
parent 87fdf7fff0
commit abb14ef57e
2 changed files with 15 additions and 3 deletions
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gcc/ChangeLog
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@ -1,3 +1,8 @@
Tue Sep 21 14:55:11 EDT 1999 Andrew MacLeod <amacleod@cygnus.com>
* flow.c (split_edge): Handle insertion on a fallthrough edge which
has the EXIT_BLOCK as a dest.
Tue Sep 21 14:51:23 EDT 1999 Andrew MacLeod <amacleod@cygnus.com>
* flow.c (remove_edge): New function to remove an edge from the

13
gcc/flow.c
View File

@ -1153,7 +1153,7 @@ split_edge (edge_in)
basic_block old_pred, bb, old_succ;
edge edge_out;
rtx bb_note;
int i;
int i, j;
/* Abnormal edges cannot be split. */
if ((edge_in->flags & EDGE_ABNORMAL) != 0)
@ -1263,7 +1263,11 @@ split_edge (edge_in)
/* Place the new block just in front of the successor. */
VARRAY_GROW (basic_block_info, ++n_basic_blocks);
for (i = n_basic_blocks - 1; i > old_succ->index; --i)
if (old_succ == EXIT_BLOCK_PTR)
j = n_basic_blocks - 1;
else
j = old_succ->index;
for (i = n_basic_blocks - 1; i > j; --i)
{
basic_block tmp = BASIC_BLOCK (i - 1);
BASIC_BLOCK (i) = tmp;
@ -1273,7 +1277,10 @@ split_edge (edge_in)
bb->index = i;
/* Create the basic block note. */
bb_note = emit_note_before (NOTE_INSN_BASIC_BLOCK, old_succ->head);
if (old_succ != EXIT_BLOCK_PTR)
bb_note = emit_note_before (NOTE_INSN_BASIC_BLOCK, old_succ->head);
else
bb_note = emit_note_after (NOTE_INSN_BASIC_BLOCK, get_last_insn ());
NOTE_BASIC_BLOCK (bb_note) = bb;
bb->head = bb->end = bb_note;