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Diffstat (limited to 'gcc/tree-vect-loop.cc')
| -rw-r--r-- | gcc/tree-vect-loop.cc | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/gcc/tree-vect-loop.cc b/gcc/tree-vect-loop.cc index 3b46c58..4d9abd0 100644 --- a/gcc/tree-vect-loop.cc +++ b/gcc/tree-vect-loop.cc @@ -3021,12 +3021,16 @@ start_over: to be able to handle fewer than VF scalars, or needs to have a lower VF than the main loop. */ if (LOOP_VINFO_EPILOGUE_P (loop_vinfo) - && !LOOP_VINFO_CAN_USE_PARTIAL_VECTORS_P (loop_vinfo) - && maybe_ge (LOOP_VINFO_VECT_FACTOR (loop_vinfo), - LOOP_VINFO_VECT_FACTOR (orig_loop_vinfo))) - return opt_result::failure_at (vect_location, - "Vectorization factor too high for" - " epilogue loop.\n"); + && !LOOP_VINFO_CAN_USE_PARTIAL_VECTORS_P (loop_vinfo)) + { + poly_uint64 unscaled_vf + = exact_div (LOOP_VINFO_VECT_FACTOR (orig_loop_vinfo), + orig_loop_vinfo->suggested_unroll_factor); + if (maybe_ge (LOOP_VINFO_VECT_FACTOR (loop_vinfo), unscaled_vf)) + return opt_result::failure_at (vect_location, + "Vectorization factor too high for" + " epilogue loop.\n"); + } /* Decide whether this loop_vinfo should use partial vectors or peeling, assuming that the loop will be used as a main loop. We will redo |