https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94748
Bug ID: 94748 Summary: aarch64: many unnecessary bti j emitted Product: gcc Version: 10.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: target Assignee: unassigned at gcc dot gnu.org Reporter: nsz at gcc dot gnu.org Target Milestone: --- __attribute__((target("branch-protection=bti"))) int foo(void) { label: return 0; } compiles to foo: hint 34 // bti c hint 36 // bti j mov w0, 0 ret the bti j is not necessary and bti j should be rarely emitted otherwise the security architecture is weakened.