https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94482
--- Comment #22 from Richard Biener <rguenth at gcc dot gnu.org> --- Note that when REALPART_EXPR/IMAGPART_EXPR or BIT_FIELD_REF was there using a VIEW_CONVERT_EXPR on their op0 should be OK. Since we then have grp_partial_def SRA will ensure the replacement is not written into SSA immediately.
