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Add TRACING_ENABLED to Machine and add enter_trace_span!() #140972

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Merged
merged 2 commits into from
May 21, 2025
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Add TRACING_ENABLED to Machine and add enter_trace_span!() #140972

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f4bc4cd
Add TRACING_ENABLED to Machine trait
Stypox May 12, 2025
28db348
Add enter_trace_span!() that checks if tracing is enabled
Stypox May 13, 2025
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Add TRACING_ENABLED to Machine trait
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@Stypox
Stypox committed May 13, 2025
commit f4bc4cd1fdb39203740929a6ec2cfc42f8b1e86d
6 changes: 6 additions & 0 deletions compiler/rustc_const_eval/src/interpret/machine.rs
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Expand Up @@ -147,6 +147,12 @@ pub trait Machine<'tcx>: Sized {
/// already been checked before.
const ALL_CONSTS_ARE_PRECHECKED: bool = true;

/// Determines whether rustc_const_eval functions that make use of the [Machine] should make
/// tracing calls (to the `tracing` library). By default this is `false`, meaning the tracing
/// calls will supposedly be optimized out. This flag is set to `true` inside Miri, to allow
/// tracing the interpretation steps, among other things.
const TRACING_ENABLED: bool = false;

/// Whether memory accesses should be alignment-checked.
fn enforce_alignment(ecx: &InterpCx<'tcx, Self>) -> bool;

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