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tree-ssa-threadupdate.c (create_block_for_threading): Do not call remove_ctrl_stmt_and_useless_edges.

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* tree-ssa-threadupdate.c (create_block_for_threading): Do not call
	remove_ctrl_stmt_and_useless_edges.
	(create_duplicates): Call remove_ctrl_stmt_and_useless_edges.
	(fixup_template_block, thread_single_edge): Likewise.
	(mark_threaded_blocks): Use THREAD_TARGET.

From-SVN: r173492
This commit is contained in:
Jeff Law 2011-05-06 09:13:35 -06:00 • committed by Jeff Law
parent 1fc1b66d4a
commit a91926b9ff
2 changed files with 13 additions and 11 deletions
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8
gcc/ChangeLog
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@ -1,3 +1,11 @@
2011-05-06 Jeff Law <law@redhat.com>
* tree-ssa-threadupdate.c (create_block_for_threading): Do not call
remove_ctrl_stmt_and_useless_edges.
(create_duplicates): Call remove_ctrl_stmt_and_useless_edges.
(fixup_template_block, thread_single_edge): Likewise.
(mark_threaded_blocks): Use THREAD_TARGET.
2011-05-06 Alan Modra <amodra@gmail.com>
PR target/48900

16
gcc/tree-ssa-threadupdate.c
View file

@ -198,8 +198,7 @@ remove_ctrl_stmt_and_useless_edges (basic_block bb, basic_block dest_bb)
}
}
/* Create a duplicate of BB which only reaches the destination of the edge
stored in RD. Record the duplicate block in RD. */
/* Create a duplicate of BB. Record the duplicate block in RD. */
static void
create_block_for_threading (basic_block bb, struct redirection_data *rd)
@ -217,14 +216,6 @@ create_block_for_threading (basic_block bb, struct redirection_data *rd)
/* Zero out the profile, since the block is unreachable for now. */
rd->dup_block->frequency = 0;
rd->dup_block->count = 0;
/* The call to duplicate_block will copy everything, including the
useless COND_EXPR or SWITCH_EXPR at the end of BB. We just remove
the useless COND_EXPR or SWITCH_EXPR here rather than having a
specialized block copier. We also remove all outgoing edges
from the duplicate block. The appropriate edge will be created
later. */
remove_ctrl_stmt_and_useless_edges (rd->dup_block, NULL);
}
/* Hashing and equality routines for our hash table. */
@ -375,6 +366,7 @@ create_duplicates (void **slot, void *data)
/* Go ahead and wire up outgoing edges and update PHIs for the duplicate
block. */
remove_ctrl_stmt_and_useless_edges (rd->dup_block, NULL);
create_edge_and_update_destination_phis (rd, rd->dup_block);
}
@ -396,6 +388,7 @@ fixup_template_block (void **slot, void *data)
and halt the hash table traversal. */
if (rd->dup_block && rd->dup_block == local_info->template_block)
{
remove_ctrl_stmt_and_useless_edges (rd->dup_block, NULL);
create_edge_and_update_destination_phis (rd, rd->dup_block);
return 0;
}
@ -646,6 +639,7 @@ thread_single_edge (edge e)
rd.outgoing_edge = eto;
create_block_for_threading (bb, &rd);
remove_ctrl_stmt_and_useless_edges (rd.dup_block, NULL);
create_edge_and_update_destination_phis (&rd, rd.dup_block);
if (dump_file && (dump_flags & TDF_DETAILS))
@ -978,8 +972,8 @@ mark_threaded_blocks (bitmap threaded_blocks)
edge e = VEC_index (edge, threaded_edges, i);
edge *x = (edge *) XNEWVEC (edge, 1);
x[0] = VEC_index (edge, threaded_edges, i + 1);
e->aux = x;
THREAD_TARGET (e) = VEC_index (edge, threaded_edges, i + 1);
bitmap_set_bit (tmp, e->dest->index);
}