GCC modified for the FreeChainXenon project
f53e9d40de
This restores not tracking SLP nodes for induction initial values in not nested context because this interferes with peeling and epilogue vectorization. 2020-11-03 Richard Biener <rguenther@suse.de> PR tree-optimization/97678 * tree-vect-slp.c (vect_build_slp_tree_2): Do not track the initial values of inductions when not nested. * tree-vect-loop.c (vectorizable_induction): Look at PHI node initial values again for SLP and not nested inductions. Handle LOOP_VINFO_MASK_SKIP_NITERS and cost invariants. * gcc.dg/vect/pr97678.c: New testcase. |
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