re PR tree-optimization/84512 (Missed optimization: should be precalculated in compile-time)
2018-02-27 Richard Biener <rguenther@suse.de> PR tree-optimization/84512 * tree-vect-loop.c (vect_compute_single_scalar_iteration_cost): Do not use the estimate returned from record_stmt_cost for the scalar iteration cost but sum properly using add_stmt_cost. * gcc.dg/tree-ssa/pr84512.c: New testcase. From-SVN: r258036
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gcc/testsuite/gcc.dg/tree-ssa/pr84512.c
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