diff options
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ipa-prop.c | 40 |
1 files changed, 27 insertions, 13 deletions
diff --git a/gcc/ipa-prop.c b/gcc/ipa-prop.c index 1c69d97..443f21c 100644 --- a/gcc/ipa-prop.c +++ b/gcc/ipa-prop.c @@ -4428,19 +4428,33 @@ ipa_edge_args_sum_t::duplicate (cgraph_edge *src, cgraph_edge *dst, dst_jf->value.constant.rdesc = NULL; else if (src->caller == dst->caller) { - struct ipa_ref *ref; - symtab_node *n = symtab_node_for_jfunc (src_jf); - gcc_checking_assert (n); - ref = src->caller->find_reference (n, src->call_stmt, - src->lto_stmt_uid); - gcc_checking_assert (ref); - dst->caller->clone_reference (ref, ref->stmt); - - struct ipa_cst_ref_desc *dst_rdesc = ipa_refdesc_pool.allocate (); - dst_rdesc->cs = dst; - dst_rdesc->refcount = src_rdesc->refcount; - dst_rdesc->next_duplicate = NULL; - dst_jf->value.constant.rdesc = dst_rdesc; + /* Creation of a speculative edge. If the source edge is the one + grabbing a reference, we must create a new (duplicate) + reference description. Otherwise they refer to the same + description corresponding to a reference taken in a function + src->caller is inlined to. In that case we just must + increment the refcount. */ + if (src_rdesc->cs == src) + { + symtab_node *n = symtab_node_for_jfunc (src_jf); + gcc_checking_assert (n); + ipa_ref *ref + = src->caller->find_reference (n, src->call_stmt, + src->lto_stmt_uid); + gcc_checking_assert (ref); + dst->caller->clone_reference (ref, ref->stmt); + + ipa_cst_ref_desc *dst_rdesc = ipa_refdesc_pool.allocate (); + dst_rdesc->cs = dst; + dst_rdesc->refcount = src_rdesc->refcount; + dst_rdesc->next_duplicate = NULL; + dst_jf->value.constant.rdesc = dst_rdesc; + } + else + { + src_rdesc->refcount++; + dst_jf->value.constant.rdesc = src_rdesc; + } } else if (src_rdesc->cs == src) { |