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ICH: Replace old, transitive metadata hashing with direct hashing approach.

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Instead of collecting all potential inputs to some metadata entry and
hashing those, we directly hash the values we are storing in metadata.
This is more accurate and doesn't suffer from quadratic blow-up when
many entries have the same dependencies.
This commit is contained in:
Michael Woerister 2017-04-05 23:39:02 +02:00
parent bc7af816f3
commit ca2dce9b48
27 changed files with 689 additions and 341 deletions
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10
src/test/incremental/hashes/function_interfaces.rs
View file

@ -50,7 +50,7 @@ fn add_return_type() {}
#[cfg(not(cfail1))]
#[rustc_dirty(label="Hir", cfg="cfail2")]
#[rustc_clean(label="Hir", cfg="cfail3")]
#[rustc_metadata_dirty(cfg="cfail2")]
#[rustc_metadata_clean(cfg="cfail2")] // The type doesn't change, so metadata is the same
#[rustc_metadata_clean(cfg="cfail3")]
fn add_return_type() -> () {}
@ -154,7 +154,7 @@ fn lifetime_parameter() {}
#[cfg(not(cfail1))]
#[rustc_dirty(label="Hir", cfg="cfail2")]
#[rustc_clean(label="Hir", cfg="cfail3")]
#[rustc_metadata_dirty(cfg="cfail2")]
// #[rustc_metadata_dirty(cfg="cfail2")] -- Unused lifetime params don't show up in the type?
#[rustc_metadata_clean(cfg="cfail3")]
fn lifetime_parameter<'a>() {}
@ -315,16 +315,16 @@ fn return_impl_trait() -> impl Clone {
#[cfg(cfail1)]
fn change_return_impl_trait() -> impl Clone {
0
0u32
}
#[cfg(not(cfail1))]
#[rustc_dirty(label="Hir", cfg="cfail2")]
#[rustc_clean(label="Hir", cfg="cfail3")]
#[rustc_metadata_dirty(cfg="cfail2")]
#[rustc_metadata_clean(cfg="cfail2")] // The actual type is the same, so: clean
#[rustc_metadata_clean(cfg="cfail3")]
fn change_return_impl_trait() -> impl Copy {
0
0u32
}