https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97417
--- Comment #48 from Levy <admin at levyhsu dot com> --- Created attachment 49757 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=49757&action=edit Initial V1 patch on combine.c Three patches together: ========= Summary of gcc testsuite ========= | # of unexpected case / # of unique unexpected case | gcc | g++ | gfortran | rv64imafdc/ lp64d/ medlow | 0 / 0 | 0 / 0 | - | I'll merge all 3 patches together and fix all the debug/coding style/efficiency /whatever problem with explanations later this week. Looks likes it's fixed from my side.