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This passes down skip_args to vect_get_and_check_slp_defs to skip ignored ops there, too and not fail SLP discovery. This fixes gcc.target/aarch64/sve/reduc_strict_5.c 2020-10-28 Richard Biener <rguenther@suse.de> * tree-vect-slp.c (vect_get_and_check_slp_defs): For skipped args just push NULLs and vect_uninitialized_def. (vect_build_slp_tree_2): Allocate skip_args for all ops and pass it down to vect_get_and_check_slp_defs.
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