c61f8a5baf
This aligns with our use of the term "IR" rather than "IL" or other terms involving "language".
42 lines
1.5 KiB
Rust
42 lines
1.5 KiB
Rust
//! Result and error types representing the outcome of compiling a function.
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use verifier::VerifierError;
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/// A compilation error.
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///
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/// When Cranelift fails to compile a function, it will return one of these error codes.
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#[derive(Fail, Debug, PartialEq, Eq)]
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pub enum CodegenError {
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/// An IR verifier error.
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///
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/// This always represents a bug, either in the code that generated IR for Cranelift, or a bug
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/// in Cranelift itself.
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#[fail(display = "Verifier error: {}", _0)]
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Verifier(#[cause] VerifierError),
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/// An implementation limit was exceeded.
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///
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/// Cranelift can compile very large and complicated functions, but the [implementation has
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/// limits][limits] that cause compilation to fail when they are exceeded.
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///
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/// [limits]: https://cranelift.readthedocs.io/en/latest/ir.html#implementation-limits
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#[fail(display = "Implementation limit exceeded")]
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ImplLimitExceeded,
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/// The code size for the function is too large.
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///
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/// Different target ISAs may impose a limit on the size of a compiled function. If that limit
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/// is exceeded, compilation fails.
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#[fail(display = "Code for function is too large")]
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CodeTooLarge,
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}
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/// A convenient alias for a `Result` that uses `CodegenError` as the error type.
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pub type CodegenResult<T> = Result<T, CodegenError>;
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impl From<VerifierError> for CodegenError {
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fn from(e: VerifierError) -> Self {
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CodegenError::Verifier(e)
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}
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}
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