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bootstrap: build std with less frame pointers

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Sometimes leaf frame-pointers can impact LLVM inlining choices, and
that can be a real problem for things like `mul_add`.
This commit is contained in:
Jubilee Young 2025-05-30 15:53:35 -07:00
parent 15825b7161
commit 2d5d55a50a
1 changed files with 2 additions and 1 deletions
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3
src/bootstrap/src/core/build_steps/compile.rs
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@ -670,7 +670,8 @@ pub fn std_cargo(builder: &Builder<'_>, target: TargetSelection, stage: u32, car
// Enable frame pointers by default for the library. Note that they are still controlled by a
// separate setting for the compiler.
cargo.rustflag("-Cforce-frame-pointers=yes");
cargo.rustflag("-Zunstable-options");
cargo.rustflag("-Cforce-frame-pointers=non-leaf");
let html_root =
format!("-Zcrate-attr=doc(html_root_url=\"{}/\")", builder.doc_rust_lang_org_channel(),);