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re PR middle-end/46717 (Compiler segfault in profile-use mode)

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2010-11-30  Richard Guenther  <rguenther@suse.de>

	PR tree-optimization/46717
	* value-prof.c (gimple_ic): Preserve EH edges of the indirect
	call.  Manually create EH edges for the direct call and update
	target PHI nodes.

From-SVN: r167298
This commit is contained in:
Richard Guenther 2010-11-30 14:33:00 +00:00 committed by Richard Biener
parent 3f1faac1da
commit 20f455770b
2 changed files with 29 additions and 12 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2010-11-30 Richard Guenther <rguenther@suse.de>
PR tree-optimization/46717
* value-prof.c (gimple_ic): Preserve EH edges of the indirect
call. Manually create EH edges for the direct call and update
target PHI nodes.
2010-11-30 Eric Botcazou <ebotcazou@adacore.com>
* tree.c (build_range_type_1): Do not set TYPE_STRUCTURAL_EQUALITY_P

34
gcc/value-prof.c
View File

@ -1145,7 +1145,11 @@ gimple_ic (gimple icall_stmt, struct cgraph_node *direct_call,
icall_bb = e_di->dest;
icall_bb->count = all - count;
e_ij = split_block (icall_bb, icall_stmt);
/* Do not disturb existing EH edges from the indirect call. */
if (last_stmt (icall_bb) != icall_stmt)
e_ij = split_block (icall_bb, icall_stmt);
else
e_ij = find_fallthru_edge (icall_bb->succs);
join_bb = e_ij->dest;
join_bb->count = all;
@ -1181,21 +1185,27 @@ gimple_ic (gimple icall_stmt, struct cgraph_node *direct_call,
add_phi_arg (phi, gimple_call_lhs (dcall_stmt), e_dj, UNKNOWN_LOCATION);
}
/* Fix eh edges */
/* Build an EH edge for the direct call if necessary. */
lp_nr = lookup_stmt_eh_lp (icall_stmt);
if (lp_nr != 0)
if (lp_nr != 0
&& stmt_could_throw_p (dcall_stmt))
{
if (stmt_could_throw_p (dcall_stmt))
edge e_eh, e;
edge_iterator ei;
gimple_stmt_iterator psi;
add_stmt_to_eh_lp (dcall_stmt, lp_nr);
FOR_EACH_EDGE (e_eh, ei, icall_bb->succs)
if (e_eh->flags & EDGE_EH)
break;
e = make_edge (dcall_bb, e_eh->dest, EDGE_EH);
for (psi = gsi_start_phis (e_eh->dest);
!gsi_end_p (psi); gsi_next (&psi))
{
add_stmt_to_eh_lp (dcall_stmt, lp_nr);
make_eh_edges (dcall_stmt);
gimple phi = gsi_stmt (psi);
SET_USE (PHI_ARG_DEF_PTR_FROM_EDGE (phi, e),
PHI_ARG_DEF_FROM_EDGE (phi, e_eh));
}
gcc_assert (stmt_could_throw_p (icall_stmt));
make_eh_edges (icall_stmt);
/* The old EH edges are sill on the join BB, purge them. */
gimple_purge_dead_eh_edges (join_bb);
}
return dcall_stmt;