bors 608f32435a Auto merge of #117873 - quininer:android-emutls, r=Amanieu ...

Add emulated TLS support

This is a reopen of https://github.com/rust-lang/rust/pull/96317 . many android devices still only use 128 pthread keys, so using emutls can be helpful.

Currently LLVM uses emutls by default for some targets (such as android, openbsd), but rust does not use it, because `has_thread_local` is false.

This commit has some changes to allow users to enable emutls:

1. add `-Zhas-thread-local` flag to specify that std uses `#[thread_local]` instead of pthread key.
2. when using emutls, decorate symbol names to find thread local symbol correctly.
3. change `-Zforce-emulated-tls` to `-Ztls-model=emulated` to explicitly specify whether to generate emutls.

r? `@Amanieu`

2023-12-09 05:32:35 +00:00

..

llvm-wrapper

Auto merge of #117873 - quininer:android-emutls, r=Amanieu

2023-12-09 05:32:35 +00:00

src

Bump cfg(bootstrap)s

2023-11-15 19:41:28 -05:00

build.rs

Use new check-cfg syntax in rustc_llvm build script

2023-12-05 13:25:11 +01:00

Cargo.toml

Clean up rustc_*/Cargo.toml.

2023-10-30 08:46:02 +11:00