From d61f918b969533b07c1b2da775a324256f4d09ff Mon Sep 17 00:00:00 2001 From: "Eddy (Eduard) Stefes" Date: Mon, 27 Jul 2026 15:19:16 +0200 Subject: [PATCH] S390X stabilize backchain Document the s390x `backchain` target feature Stabilized in https://github.com/rust-lang/rust/pull/158612 --- src/attributes/codegen.md | 1 + 1 file changed, 1 insertion(+) diff --git a/src/attributes/codegen.md b/src/attributes/codegen.md index d3ecf00b88..bc0dc31bb2 100644 --- a/src/attributes/codegen.md +++ b/src/attributes/codegen.md @@ -715,6 +715,7 @@ Feature | Implicitly Enables | `miscellaneous-extensions-2` | | miscellaneous extensions 2 `miscellaneous-extensions-3` | | miscellaneous extensions 3 `miscellaneous-extensions-4` | | miscellaneous extensions 4 +`backchain` | | store the caller's frame address in the callee's stack frame backchain slot [z/Architecture Principles of Operation]: https://publibfp.dhe.ibm.com/epubs/pdf/a227832d.pdf