diff options
Diffstat (limited to 'gcc/lto-cgraph.c')
| -rw-r--r-- | gcc/lto-cgraph.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/gcc/lto-cgraph.c b/gcc/lto-cgraph.c index d424e14..b310b44 100644 --- a/gcc/lto-cgraph.c +++ b/gcc/lto-cgraph.c @@ -1562,7 +1562,18 @@ input_cgraph_1 (struct lto_file_decl_data *file_data, cnode->instrumented_version = cgraph_node::get (cnode->orig_decl); if (cnode->instrumented_version) - cnode->instrumented_version->instrumented_version = cnode; + { + /* We may have multiple nodes for a single function which + will be merged later. To have a proper merge we need + to keep instrumentation_version reference between nodes + consistent: each instrumented_version reference should + have proper reverse reference. Thus don't break existing + instrumented_version reference if it already exists. */ + if (cnode->instrumented_version->instrumented_version) + cnode->instrumented_version = NULL; + else + cnode->instrumented_version->instrumented_version = cnode; + } /* Restore decl names reference. */ if (IDENTIFIER_TRANSPARENT_ALIAS (DECL_ASSEMBLER_NAME (cnode->decl)) |