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Re: Scheduling an early complete loop unrolling pass?

As we also only vectorize innermost loops I believe doing a
complete unrolling pass early will help in general (I pushed
for this some time ago).

Thoughts?

It might also hurt, though, since we don't have a basic block vectorizer. IIUC the vectorizer is able to turn

  for (i = 0; i < 4; i++)
    v[i] = 0.0;

into

*(vector double *)v = (vector double){0.0, 0.0, 0.0, 0.0};

Paolo

Follow-Ups:
- Re: Scheduling an early complete loop unrolling pass?
  - From: Richard Guenther
- Re: Scheduling an early complete loop unrolling pass?
  - From: Zdenek Dvorak

References:
- Scheduling an early complete loop unrolling pass?
  - From: Richard Guenther

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