RFR: 8290248: Implement MaxINode::Ideal transformation

[Vladimir Kozlov]

On Mon, 1 Aug 2022 16:02:04 GMT, Bhavana-Kilambi <duke at openjdk.org> wrote:

> This patch implements Ideal transformations for MaxINode, which are
> similar to the ones defined for MinINode to transform/optimize a couple
> of commonly occuring patterns such as -
> 
> MaxI(x + c0, MaxI(y + c1, z)) ==> MaxI(AddI(x, MAX2(c0, c1)), z) when x
> == y
> MaxI(x + c0, y + c1) ==> AddI(x, MAX2(c0, c1)) when x == y
> 
> IR tests to test the Ideal transformations of both MaxI and MinI nodes
> are also included in this patch.

Tobias is running testing already.

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PR: https://git.openjdk.org/jdk/pull/9703