Hi,
since r225260 the backend register elimination hooks also get invoked
after reload is completed e.g. from sched2. During register
elimination we call s390_init_frame_layout which is not supposed to be
invoked after reload. We had an assertion here to make sure this does
not happen. This got triggered and currently breaks bootstrap on
S/390. With the attached patch s390_init_frame_layout just becomes a
NOP when invoked after reload is completed.
Committed to mainline.
Bye,
-Andreas-
gcc/ChangeLog:
2015-07-08 Andreas Krebbel <kreb...@linux.vnet.ibm.com>
* config/s390/s390.c (s390_init_frame_layout): Replace assertion
with early exit.
diff --git a/gcc/config/s390/s390.c b/gcc/config/s390/s390.c
index 4ef8e42..5715d89 100644
--- a/gcc/config/s390/s390.c
+++ b/gcc/config/s390/s390.c
@@ -9351,7 +9351,10 @@ s390_init_frame_layout (void)
HOST_WIDE_INT frame_size;
int base_used;
- gcc_assert (!reload_completed);
+ /* After LRA the frame layout is supposed to be read-only and should
+ not be re-computed. */
+ if (reload_completed)
+ return;
/* On S/390 machines, we may need to perform branch splitting, which
will require both base and return address register. We have no
