https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64172
Bug ID: 64172 Summary: [4.9 Regression] Wrong code with GCC vector extensions on ARM when compiled without NEON Product: gcc Version: 4.9.2 Status: UNCONFIRMED Severity: normal Priority: P3 Component: target Assignee: unassigned at gcc dot gnu.org Reporter: siarhei.siamashka at gmail dot com The attached partially reduced testcase misbehaves at runtime if it is compiled using GCC 4.9.2 on ARM with -O2 optimizations and without -mfpu=neon. Reducing optimizations to -O1 helps.