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Now that vectorizable_operation vectorises most loop stmts involved in a reduction, it needs to be aware of reductions in fully-masked loops. The LOOP_VINFO_CAN_FULLY_MASK_P parts of vectorizable_reduction now only apply to cases that use vect_transform_reduction. This new way of doing things is definitely an improvement for SVE though, since it means we can lift the old restriction of not using fully-masked loops for reduction chains. 2019-10-25 Richard Sandiford <richard.sandiford@arm.com> gcc/ * tree-vect-loop.c (vectorizable_reduction): Restrict the LOOP_VINFO_CAN_FULLY_MASK_P handling to cases that will be handled by vect_transform_reduction. Allow fully-masked loops to be used with reduction chains. * tree-vect-stmts.c (vectorizable_operation): Handle reduction operations in fully-masked loops. (vectorizable_condition): Reject EXTRACT_LAST_REDUCTION operations in fully-masked loops. gcc/testsuite/ * gcc.dg/vect/pr65947-1.c: No longer expect doubled dump lines for FOLD_EXTRACT_LAST reductions. * gcc.dg/vect/pr65947-2.c: Likewise. * gcc.dg/vect/pr65947-3.c: Likewise. * gcc.dg/vect/pr65947-4.c: Likewise. * gcc.dg/vect/pr65947-5.c: Likewise. * gcc.dg/vect/pr65947-6.c: Likewise. * gcc.dg/vect/pr65947-9.c: Likewise. * gcc.dg/vect/pr65947-10.c: Likewise. * gcc.dg/vect/pr65947-12.c: Likewise. * gcc.dg/vect/pr65947-13.c: Likewise. * gcc.dg/vect/pr65947-14.c: Likewise. * gcc.dg/vect/pr80631-1.c: Likewise. * gcc.dg/vect/pr80631-2.c: Likewise. * gcc.dg/vect/vect-cond-reduc-3.c: Likewise. * gcc.dg/vect/vect-cond-reduc-4.c: Likewise. From-SVN: r277438 |
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