4d2248bec5
As PR91052's comments show, commit r272731 exposed one issue in function
combine_and_move_insns. Function combine_and_move_insns perform the
unexpected movement which alter live interval of some register, leading
incorrect value to be used. See PR91052 for details.
2020-02-12 Kewen Lin <linkw@gcc.gnu.org>
PR target/91052
* ira.c (combine_and_move_insns): Skip multiple_sets def_insn.
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