diff options
| author | rth <rth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2001-08-22 05:21:10 +0000 |
|---|---|---|
| committer | rth <rth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2001-08-22 05:21:10 +0000 |
| commit | 5b6ea16e7ab26a5e75f2d2c7836df918f191f804 (patch) | |
| tree | 52b47aa01a9ec67a95b7c255f3990bda897b57d3 /gcc/ifcvt.c | |
| parent | 0608064e04b2835b6b43807e387ab527fb53015e (diff) | |
| download | gcc-5b6ea16e7ab26a5e75f2d2c7836df918f191f804.tar.gz | |
* ifcvt.c (find_if_block): Allow join_bb as EXIT.
(merge_if_block): Handle fallout from same.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@45093 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/ifcvt.c')
| -rw-r--r-- | gcc/ifcvt.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/gcc/ifcvt.c b/gcc/ifcvt.c index a877a90da18..dc78672a54f 100644 --- a/gcc/ifcvt.c +++ b/gcc/ifcvt.c @@ -1881,7 +1881,9 @@ merge_if_block (test_bb, then_bb, else_bb, join_bb) is more than one remaining edge, it must come from elsewhere. There may be zero incoming edges if the THEN block didn't actually join back up (as with a call to abort). */ - else if (join_bb->pred == NULL || join_bb->pred->pred_next == NULL) + else if ((join_bb->pred == NULL + || join_bb->pred->pred_next == NULL) + && join_bb != EXIT_BLOCK_PTR) { /* We can merge the JOIN. */ if (life_data_ok) @@ -1901,7 +1903,8 @@ merge_if_block (test_bb, then_bb, else_bb, join_bb) abort (); /* Remove the jump and cruft from the end of the COMBO block. */ - tidy_fallthru_edge (combo_bb->succ, combo_bb, join_bb); + if (join_bb != EXIT_BLOCK_PTR) + tidy_fallthru_edge (combo_bb->succ, combo_bb, join_bb); } /* Make sure we update life info properly. */ @@ -2067,7 +2070,7 @@ find_if_block (test_bb, then_edge, else_edge) next_index = then_bb->index; if (else_bb && ++next_index != else_bb->index) return FALSE; - if (++next_index != join_bb->index) + if (++next_index != join_bb->index && join_bb->index != EXIT_BLOCK) { if (else_bb) join_bb = NULL; |