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Jonathan Brouwer 75234e5d66 Rollup merge of #155723 - cezarbbb:fix-thumb-target-tier-spec, r=wesleywiser
Fix tier level for 5 thumb bare-metal ARM targets

The spec files for 5 Thumb-mode bare-metal ARM targets incorrectly set tier: Some(2), while the documentation correctly lists them as Tier 3. This mismatch was introduced in PR #150556 — the intent was Tier 2 eventually, but these targets should sit at Tier 3 until a proper Tier 3 → Tier 2 promotion MCP is submitted and approved.

This PR changes tier: Some(2) → Some(3) in the following spec files, making them consistent with the docs:

thumbv7a-none-eabi
thumbv7a-none-eabihf
thumbv7r-none-eabi
thumbv7r-none-eabihf
thumbv8r-none-eabihf

PS: No doc changes needed — they already correctly state Tier 3.

r?
2026-04-24 18:19:20 +02:00
..
2025-09-12 20:53:28 +02:00

rustc_target contains some very low-level details that are specific to different compilation targets and so forth.

For more information about how rustc works, see the rustc dev guide.