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Increase Stack Size for AIX #131116

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Oct 5, 2024
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Increase Stack Size for AIX #131116

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9be9141
increase stack size for aix
mustartt Oct 1, 2024
162ee75
format
mustartt Oct 1, 2024
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4 changes: 4 additions & 0 deletions compiler/rustc_data_structures/src/stack.rs
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Expand Up @@ -5,7 +5,11 @@ const RED_ZONE: usize = 100 * 1024; // 100k

// Only the first stack that is pushed, grows exponentially (2^n * STACK_PER_RECURSION) from then
// on. This flag has performance relevant characteristics. Don't set it too high.
#[cfg(not(target_os = "aix"))]
const STACK_PER_RECURSION: usize = 1024 * 1024; // 1MB
// LLVM for AIX doesn't feature TCO, increase recursion size for workaround.
#[cfg(target_os = "aix")]
const STACK_PER_RECURSION: usize = 16 * 1024 * 1024; // 16MB

/// Grows the stack on demand to prevent stack overflow. Call this in strategic locations
/// to "break up" recursive calls. E.g. almost any call to `visit_expr` or equivalent can benefit
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