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re PR target/32325 (cc1plus ICE configuring libstdc++ on Tru64 UNIX V5.1B: SEGV in rtl_verify_flow_info) 

PR target/32325
	* except.c (finish_eh_generation): Call commit_edge_insertions if
	there are insns queued on the entry edge.
	* config/alpha/alpha.c (alpha_gp_save_rtx): Insert the insns on
	the entry edge.

From-SVN: r128665
This commit is contained in:
Eric Botcazou 2007-09-22 08:42:57 +00:00 committed by Eric Botcazou
parent 1018b4c356
commit 8deb1d3134
3 changed files with 19 additions and 2 deletions
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8
gcc/ChangeLog
View File

@ -1,3 +1,11 @@
2007-09-22 Eric Botcazou <ebotcazou@adacore.com>
PR target/32325
* except.c (finish_eh_generation): Call commit_edge_insertions if
there are insns queued on the entry edge.
* config/alpha/alpha.c (alpha_gp_save_rtx): Insert the insns on
the entry edge.
2007-09-22 Richard Sandiford <rsandifo@nildram.co.uk>
* doc/sourcebuild.texi (dg-add-c99-runtime-options): Document.

9
gcc/config/alpha/alpha.c
View File

@ -4780,7 +4780,14 @@ alpha_gp_save_rtx (void)
seq = get_insns ();
end_sequence ();
emit_insn_at_entry (seq);
/* We used to simply emit the sequence after entry_of_function.
However this breaks the CFG if the first instruction in the
first block is not the NOTE_INSN_BASIC_BLOCK, for example a
label. Emit the sequence properly on the edge. We are only
invoked from dw2_build_landing_pads and finish_eh_generation
will call commit_edge_insertions thanks to a kludge. */
insert_insn_on_edge (seq, single_succ_edge (ENTRY_BLOCK_PTR));
cfun->machine->gp_save_rtx = m;
}

4
gcc/except.c
View File

@ -2107,7 +2107,9 @@ finish_eh_generation (void)
/* We've totally changed the CFG. Start over. */
find_exception_handler_labels ();
break_superblocks ();
if (USING_SJLJ_EXCEPTIONS)
if (USING_SJLJ_EXCEPTIONS
/* Kludge for Alpha/Tru64 (see alpha_gp_save_rtx). */
|| single_succ_edge (ENTRY_BLOCK_PTR)->insns.r)
commit_edge_insertions ();
FOR_EACH_BB (bb)
{