https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114790
--- Comment #16 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Jan Hubicka <hubi...@gcc.gnu.org>: https://gcc.gnu.org/g:52d9c2272f6366cd5b30e9540ce8ef16b482cee5 commit r16-2196-g52d9c2272f6366cd5b30e9540ce8ef16b482cee5 Author: Jan Hubicka <hubi...@ucw.cz> Date: Fri Jul 11 12:37:24 2025 +0200 Fix ICE in speculative devirtualization This patch fixes ICE bilding lto1 with autoprofiledbootstrap and in pr114790. What happens is that auto-fdo speculatively devirtualizes to a wrong target. This is due to a bug where it mixes up dwarf names and linkage names of inline functions I need to fix as well. Later we clone at WPA time. At ltrans time clone is materialized and call is turned into a direct call (this optimization is missed by ipa-cp propagation). At this time we should resolve speculation but we don't. As a result we get error from verifier after inlining complaining that there is speculative call with corresponding direct call lacking speculative flag. This seems long-lasting problem in cgraph_update_edges_for_call_stmt_node but I suppose it does not trigger since we usually speculate correctly or notice the direct call at WPA time already. Bootstrapped/regtested x86_64-linux. gcc/ChangeLog: PR ipa/114790 * cgraph.cc (cgraph_update_edges_for_call_stmt_node): Resolve devirtualization if call statement was optimized out or turned to direct call. gcc/testsuite/ChangeLog: * g++.dg/lto/pr114790_0.C: New test. * g++.dg/lto/pr114790_1.C: New test.
