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function.c (thread_prologue_and_epilogue_insns): Don't insert a RETURN insn into a block which already ends with a jump. 

* function.c (thread_prologue_and_epilogue_insns): Don't insert
	a RETURN insn into a block which already ends with a jump.

From-SVN: r31928
This commit is contained in:
Geoff Keating 2000-02-11 19:31:55 +00:00 committed by Geoffrey Keating
parent 3db18f599e
commit 2dd8bc0166
2 changed files with 23 additions and 6 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2000-02-11 Geoff Keating <geoffk@cygnus.com>
* function.c (thread_prologue_and_epilogue_insns): Don't insert
a RETURN insn into a block which already ends with a jump.
2000-02-11 Geoff Keating <geoffk@cygnus.com>
* haifa-sched.c (BUF_LEN): Increase a lot.

24
gcc/function.c
View File

@ -6746,13 +6746,25 @@ thread_prologue_and_epilogue_insns (f)
remove_edge (e);
make_edge (NULL, bb, EXIT_BLOCK_PTR, 0);
}
/* Emit a return insn for the exit fallthru block. Whether
this is still reachable will be determined later. */
emit_barrier_after (last->end);
emit_return_into_block (last);
}
else
{
/* The exit block wasn't empty. We have to use insert_insn_on_edge,
as it may be the exit block can go elsewhere as well
as exiting. */
start_sequence ();
emit_jump_insn (gen_return ());
seq = gen_sequence ();
end_sequence ();
insert_insn_on_edge (seq, e);
insertted = 1;
}
/* Emit a return insn for the exit fallthru block. Whether
this is still reachable will be determined later. */
emit_barrier_after (last->end);
emit_return_into_block (last);
goto epilogue_done;
}
#endif