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Jakub Jelinek
authored
register_operand predicate allows not just REGs, but also SUBREGs of REGs, and for the latter lowpart_subreg might FAIL when trying to create paradoxical SUBREG in some cases. For the input operand fixed by force_reg on it first, for the output operand handled by always dividing into a fresh V4SFmode temporary and emit_move_insn into the destination afterwards, that is also beneficial for combine. 2021-12-28 Jakub Jelinek <jakub@redhat.com> PR target/103842 * config/i386/mmx.md (divv2sf3): Use force_reg on op1. Always perform divv4sf3 into a pseudo and emit_move_insn into operands[0]. * g++.dg/opt/pr103842.C: New test.