On Mon, Aug 8, 2022 at 10:07 AM Roger Sayle wrote:
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>
> This patch resolves PR tree-optimization/71343, a missed-optimization
> enhancement request where GCC fails to see that (a<<2)+(b<<2) == a*4+b*4.
> This requires two related (sets of) optimizations to be added to match.pd.
>
> The first is t
This patch resolves PR tree-optimization/71343, a missed-optimization
enhancement request where GCC fails to see that (a<<2)+(b<<2) == a*4+b*4.
This requires two related (sets of) optimizations to be added to match.pd.
The first is that (X< 4*X" will always evaluate to false.
This patch has been
