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ifcvt.c (find_if_case_1): Reinstate 2005-01-04 change... 

* ifcvt.c (find_if_case_1): Reinstate 2005-01-04 change, now that
	the latent bug in rtl_delete_block has been resolved.

From-SVN: r93085
This commit is contained in:
Roger Sayle 2005-01-08 14:47:56 +00:00 committed by Roger Sayle
parent 779fae71d5
commit 88c0f1c63f
2 changed files with 21 additions and 1 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2005-01-08 Roger Sayle <roger@eyesopen.com>
* ifcvt.c (find_if_case_1): Reinstate 2005-01-04 change, now that
the latent bug in rtl_delete_block has been resolved.
2005-01-08 Richard Sandiford <rsandifo@redhat.com>
* config/mips/t-iris6 (MULTILIB_DIRNAMES): Use -mabi argument values.

17
gcc/ifcvt.c
View File

@ -2927,7 +2927,22 @@ find_if_case_1 (basic_block test_bb, edge then_edge, edge else_edge)
else_bb->global_live_at_start,
then_bb->global_live_at_end);
new_bb = redirect_edge_and_branch_force (FALLTHRU_EDGE (test_bb), else_bb);
/* We can avoid creating a new basic block if then_bb is immediately
followed by else_bb, i.e. deleting then_bb allows test_bb to fall
thru to else_bb. */
if (then_bb->next_bb == else_bb
&& then_bb->prev_bb == test_bb
&& else_bb != EXIT_BLOCK_PTR)
{
redirect_edge_succ (FALLTHRU_EDGE (test_bb), else_bb);
new_bb = 0;
}
else
new_bb = redirect_edge_and_branch_force (FALLTHRU_EDGE (test_bb),
else_bb);
then_bb_index = then_bb->index;
delete_basic_block (then_bb);