https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65078
Bug ID: 65078 Summary: [5.0 Regression] 4.9 and 5.0 generate more spill-fill in comparison with 4.8.2 Product: gcc Version: 5.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: rtl-optimization Assignee: unassigned at gcc dot gnu.org Reporter: ysrumyan at gmail dot com Using attached simple test-case extracted from codec we found out that 4.8.2 compiler generates more compact binaries in comparison with 4.9 & 5.0 compilers ('-O3 -msse2 -m32" options were used), for example grep -c "%esp" t1.4.8.2.s 25 grep -c "%esp" t1.trunk.s 75