When we have a speculated edge but we folded the call to
__builtin_unreachable () then trying to update the cgraph ICEs
in resolve_speculation because there's no symtab node for
__builtin_unreachable (). Reject this resolving attempt similar
as to when the callees decl were NULL or it were not semantically
equivalent.
I only have a LTRANS unit as testcase.
I've LTO profilebootstrapped this with the config that reproduced
the error but I'm now doing a regular bootstrap/regtest as well.
OK?
Thanks,
Richard.
PR ipa/122456
* cgraph.cc (cgraph_edge::resolve_speculation): Handle
a NULL symtab_node::get (callee_decl).
---
gcc/cgraph.cc | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/gcc/cgraph.cc b/gcc/cgraph.cc
index 3c21e174943..51fc6d3f5ee 100644
--- a/gcc/cgraph.cc
+++ b/gcc/cgraph.cc
@@ -1527,9 +1527,10 @@ cgraph_edge::resolve_speculation (cgraph_edge *edge,
tree callee_decl)
e2 = edge;
ref = e2->speculative_call_target_ref ();
edge = edge->speculative_call_indirect_edge ();
+ symtab_node *callee;
if (!callee_decl
- || !ref->referred->semantically_equivalent_p
- (symtab_node::get (callee_decl)))
+ || !(callee = symtab_node::get (callee_decl))
+ || !ref->referred->semantically_equivalent_p (callee))
{
if (dump_file)
{
--
2.51.0
