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Rollup merge of #65828 - bjorn3:add_source_info_eq_hash, r=petrochenkov

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Derive Eq and Hash for SourceInfo again

In 75c24b9c96/src/common.rs (L368) I store it in a `indexmap::IndexSet`, which requires `Eq` and `Hash`. Unfortunately they were removed in https://github.com/rust-lang/rust/pull/65647, so I can't update to latest nightly.
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Mazdak Farrokhzad 2019-10-26 14:17:50 +02:00 committed by GitHub
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src/librustc/mir/mod.rs
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@ -467,7 +467,9 @@ impl<T: Decodable> rustc_serialize::UseSpecializedDecodable for ClearCrossCrate<
/// Grouped information about the source code origin of a MIR entity.
/// Intended to be inspected by diagnostics and debuginfo.
/// Most passes can work with it as a whole, within a single function.
#[derive(Copy, Clone, Debug, PartialEq, RustcEncodable, RustcDecodable, HashStable)]
// The unoffical Cranelift backend, at least as of #65828, needs `SourceInfo` to implement `Eq` and
// `Hash`. Please ping @bjorn3 if removing them.
#[derive(Copy, Clone, Debug, Eq, PartialEq, RustcEncodable, RustcDecodable, Hash, HashStable)]
pub struct SourceInfo {
/// The source span for the AST pertaining to this MIR entity.
pub span: Span,