rust/library/std
Matthias Krüger 1cb57e2d2b
Rollup merge of #92992 - kornelski:backtraceopt, r=Mark-Simulacrum
Help optimize out backtraces when disabled

The comment in `rust_backtrace_env` says:

>    // If the `backtrace` feature of this crate isn't enabled quickly return
>   // `None` so this can be constant propagated all over the place to turn
>  // optimize away callers.

but this optimization has regressed, because the only caller of this function had an alternative path that unconditionally (and pointlessly) asked for a full backtrace, so the disabled state couldn't propagate.

I've added a getter for the full format that respects the feature flag, so that the caller will now be able to really optimize out the disabled backtrace path. I've also made `rust_backtrace_env` trivially inlineable when backtraces are disabled.
2022-01-20 17:10:40 +01:00
..
benches
primitive_docs Add primitive documentation to libcore 2021-09-12 02:23:08 +00:00
src Rollup merge of #92992 - kornelski:backtraceopt, r=Mark-Simulacrum 2022-01-20 17:10:40 +01:00
tests Update aarch64 runtime feature detection tests 2021-08-03 12:07:56 +00:00
build.rs std: Get the standard library compiling for wasm64 2021-11-10 08:35:42 -08:00
Cargo.toml Update stdlib to the 2021 edition 2021-12-18 00:21:53 +11:00