https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102176
--- Comment #3 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Richard Biener <rgue...@gcc.gnu.org>: https://gcc.gnu.org/g:a3fb781d4b341c0d50ef1b92cd3e8734e673ef18 commit r12-3362-ga3fb781d4b341c0d50ef1b92cd3e8734e673ef18 Author: Richard Biener <rguent...@suse.de> Date: Thu Sep 2 14:48:10 2021 +0200 tree-optimization/102176 - locally compute participating SLP stmts This performs local re-computation of participating scalar stmts in BB vectorization subgraphs to allow precise computation of liveness of scalar stmts after vectorization and thus precise costing. This treats all extern defs as live but continues to optimistically handle scalar defs that we think we can handle by lane-extraction even though that can still fail late during code-generation. 2021-09-02 Richard Biener <rguent...@suse.de> PR tree-optimization/102176 * tree-vect-slp.c (vect_slp_gather_vectorized_scalar_stmts): New function. (vect_bb_slp_scalar_cost): Use the computed set of vectorized scalar stmts instead of relying on the out-of-date and not accurate PURE_SLP_STMT. (vect_bb_vectorization_profitable_p): Compute the set of vectorized scalar stmts.
