RFR: 8253146: C2: Purge unused MachCallNode::_arg_size field

Wed Sep 16 06:20:02 UTC 2020

On Tue, 15 Sep 2020 07:14:58 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

> While doing changes in related code, noticed that `MachCallNode::_arg_size` is computed needlessly, taking memory
> without a good reason. Let's purge it.
> Testing: text search for _argsize; Linux x86_64 {release,fastdebug,slowdebug} builds; Linux x86_64 tier1; Linux ppc64
> fastdebug build

Marked as reviewed by adityam (Author).

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PR: https://git.openjdk.java.net/jdk/pull/167