+Wed Aug 4 01:08:44 1999 Jeffrey A Law (law@cygnus.com)
+
+ * flow.c (delete_unreachable_blocks): Do not call merge_blocks
+ or tidy_fallthru_edge if the last insn in the block is not
+ an unconditional jump or a simple conditional jump.
+
Tue Aug 3 20:21:20 1999 J"orn Rennecke <amylaar@cygnus.co.uk>
* Makefile.in (c-decl.o): Depends on defaults.h.
check that the edge is not a FALLTHRU edge. */
if ((s = b->succ) != NULL
&& s->succ_next == NULL
- && s->dest == c)
+ && s->dest == c
+ /* If the last insn is not a normal conditional jump
+ (or an unconditional jump), then we can not tidy the
+ fallthru edge because we can not delete the jump. */
+ && GET_CODE (b->end) == JUMP_INSN
+ && condjump_p (b->end))
tidy_fallthru_edge (s, b, c);
}
&& (s->flags & EDGE_EH) == 0
&& (c = s->dest) != EXIT_BLOCK_PTR
&& c->pred->pred_next == NULL
+ /* If the last insn is not a normal conditional jump
+ (or an unconditional jump), then we can not merge
+ the blocks because we can not delete the jump. */
+ && GET_CODE (b->end) == JUMP_INSN
+ && condjump_p (b->end)
&& merge_blocks (s, b, c))
continue;