Support targeting iOS platforms with ILCompiler

[ivanpovazan]

This PR enables ILCompiler to target iOS and iOSSimulator platforms.

It has been tested against a private branch which includes changes that enable building NativeAOT for iOS platforms.

• Is related to: Enable building NativeAOT for Apple mobile platforms #81024
• Fixes: Support targeting iOS platforms with ILCompiler #80908

/cc: @dotnet/ilc-contrib

[ghost]

Tagging subscribers to this area: @agocke, @MichalStrehovsky, @jkotas
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Issue Details

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This is a work-in-progress PR of enabling ILCompiler to target iOS and iOSSimulator platforms.

It is being tested against a private branch which includes changes that enable building NativeAOT for iOS platforms.

• Depends on: Enable building NativeAOT for Apple mobile platforms #81024
• Fixes: Support targeting iOS platforms with ILCompiler #80908

/cc: https://github.com/orgs/dotnet/teams/ilc-contrib

Author:	ivanpovazan
Assignees:	-
Labels:	NO-MERGE, area-NativeAOT-coreclr
Milestone:	-

[filipnavara]

Btw, this line will likely need to be updated once this lands.

[jkotas]

LGTM. Is there a reason why you have marked it as NO-MERGE?

[ivanpovazan]

LGTM. Is there a reason why you have marked it as NO-MERGE?

@jkotas, I thought of waiting for the dependent issue (from the PR's description) to be closed first.

[jkotas]

@jkotas, I thought of waiting for the dependent issue (from the PR's description) to be closed first.

I do not think we need to wait for the other issue to be closed. This PR looks good to me as-is.

[filipnavara]

I do not think we need to wait for the other issue to be closed

+1. This unblocks some work in other repositories.