Integrated: 8369002: Extract the loop->is_member(get_loop(get_ctrl(node))) pattern in a new function

[Anton Seoane Ampudia]

On Wed, 12 Nov 2025 08:49:49 GMT, Anton Seoane Ampudia <aseoane at openjdk.org> wrote:

> This PR adds a "shorthand" for the common `loop->is_member(get_loop(get_ctrl(node)))` pattern in loop optimizations.
> 
> In PhaseIdealLoop, there is already an `is_member` function that checks if a node is a (nested) member of an IdealLoopTree. In a similar fashion, this changeset adds a `ctrl_is_member` that aims to simplify the common pattern of:
> 
> Node* node_ctrl = get_ctrl(node);
> if (loop->is_member(get_loop(node))) { ... }
> 
> 
> This hopes to provide a bit more readability and code conciseness in such a common operation.
> 
> **Testing:** passes tiers 1-3

This pull request has now been integrated.

Changeset: f4305923
Author:    Anton Seoane Ampudia <aseoane at openjdk.org>
Committer: Roberto Castañeda Lozano <rcastanedalo at openjdk.org>
URL:       https://git.openjdk.org/jdk/commit/f4305923fb6203089fd13cf3387c81e127ae5fe2
Stats:     40 lines in 6 files changed: 6 ins; 7 del; 27 mod

8369002: Extract the loop->is_member(get_loop(get_ctrl(node))) pattern in a new function

Reviewed-by: bmaillard, rcastanedalo

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PR: https://git.openjdk.org/jdk/pull/28259