r207433 - [driver] Disable the slp vectorizer at -O0, -O1, and -Oz. This mirrors the

[Chandler Carruth]

On Mon, Apr 28, 2014 at 12:30 PM, Chad Rosier <mcrosier at codeaurora.org>wrote:

> -O1, and -Oz


Wait, why? Based on what discussion?

This is a pretty significant change, I'd like to understand why it was made.
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