https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113901
--- Comment #1 from Sam James <sjames at gcc dot gnu.org> --- ``` # g++ -c v8_base_without_compiler.regexp-compiler.ii -march=znver2 -O3 -wrapper valgrind ==21117== Memcheck, a memory error detector ==21117== Copyright (C) 2002-2022, and GNU GPL'd, by Julian Seward et al. ==21117== Using Valgrind-3.22.0 and LibVEX; rerun with -h for copyright info ==21117== Command: /usr/libexec/gcc/x86_64-pc-linux-gnu/14/cc1plus -fpreprocessed v8_base_without_compiler.regexp-compiler.ii -quiet -dumpbase v8_base_without_compiler.regexp-compiler.ii -dumpbase-ext .ii -march=znver2 -O3 -o /tmp/ccmEFFzy.s ==21117== ==21117== Conditional jump or move depends on uninitialised value(s) ==21117== at 0x25A1A67: UnknownInlinedFun (sparseset.h:146) ==21117== by 0x25A1A67: mark_pseudo_regno_live(int) [clone .lto_priv.0] (ira-lives.cc:327) ==21117== by 0x2597D96: UnknownInlinedFun (ira-lives.cc:411) ==21117== by 0x2597D96: UnknownInlinedFun (ira-lives.cc:425) ==21117== by 0x2597D96: process_bb_node_lives(ira_loop_tree_node*) (ira-lives.cc:1518) ==21117== by 0x2577B6C: ira_traverse_loop_tree(bool, ira_loop_tree_node*, void (*)(ira_loop_tree_node*), void (*)(ira_loop_tree_node*)) (ira-build.cc:1809) ==21117== by 0x29487B8: ira_create_allocno_live_ranges() (ira-lives.cc:1818) ==21117== by 0x257135C: ira_build() (ira-build.cc:3491) ==21117== by 0x292E234: UnknownInlinedFun (ira.cc:5793) ==21117== by 0x292E234: (anonymous namespace)::pass_ira::execute(function*) [clone .lto_priv.0] (ira.cc:6117) ==21117== by 0x203FD75: execute_one_pass(opt_pass*) (passes.cc:2646) ==21117== by 0x20F336B: execute_pass_list_1(opt_pass*) (passes.cc:2755) ==21117== by 0x20F3388: execute_pass_list_1(opt_pass*) (passes.cc:2756) ==21117== by 0x20F3028: execute_pass_list(function*, opt_pass*) (passes.cc:2766) ==21117== by 0x2850A23: cgraph_node::expand() (cgraphunit.cc:1843) ==21117== by 0x2039673: UnknownInlinedFun (cgraphunit.cc:2026) ==21117== by 0x2039673: symbol_table::compile() (cgraphunit.cc:2400) [...] ``` I'll reduce it now.
