cdcbef3c33
This avoids the degenerate case of a TYPE_MAX_VALUE latch iteration count value causing wrong range info for the vector IV. There's still the case of VF == 1 where if we don't know whether we hit the above case we cannot emit a range. 2020-12-07 Richard Biener <rguenther@suse.de> PR tree-optimization/98117 * tree-vect-loop-manip.c (vect_gen_vector_loop_niters): Properly handle degenerate niter when setting the vector loop IV range. * gcc.dg/torture/pr98117.c: New testcase. |
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