1 files changed, 414 insertions, 0 deletions
diff --git a/src/test/incremental/hashes/function_interfaces.rs b/src/test/incremental/hashes/function_interfaces.rs
new file mode 100644
index 000000000..076eddaab
--- /dev/null
+++ b/src/test/incremental/hashes/function_interfaces.rs
@@ -0,0 +1,414 @@
+// This test case tests the incremental compilation hash (ICH) implementation
+// for function interfaces.
+
+// The general pattern followed here is: Change one thing between rev1 and rev2
+// and make sure that the hash has changed, then change nothing between rev2 and
+// rev3 and make sure that the hash has not changed.
+
+// build-pass (FIXME(62277): could be check-pass?)
+// revisions: cfail1 cfail2 cfail3 cfail4 cfail5 cfail6
+// compile-flags: -Z query-dep-graph -O
+// [cfail1]compile-flags: -Zincremental-ignore-spans
+// [cfail2]compile-flags: -Zincremental-ignore-spans
+// [cfail3]compile-flags: -Zincremental-ignore-spans
+// [cfail4]compile-flags: -Zincremental-relative-spans
+// [cfail5]compile-flags: -Zincremental-relative-spans
+// [cfail6]compile-flags: -Zincremental-relative-spans
+
+#![allow(warnings)]
+#![feature(linkage)]
+#![feature(rustc_attrs)]
+#![crate_type = "rlib"]
+
+// Add Parameter ---------------------------------------------------------------
+
+#[cfg(any(cfail1,cfail4))]
+pub fn add_parameter() {}
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(
+    cfg = "cfail2",
+    except = "hir_owner, hir_owner_nodes, optimized_mir, typeck, fn_sig"
+)]
+#[rustc_clean(cfg = "cfail3")]
+#[rustc_clean(
+    cfg = "cfail5",
+    except = "hir_owner, hir_owner_nodes, optimized_mir, typeck, fn_sig"
+)]
+#[rustc_clean(cfg = "cfail6")]
+pub fn add_parameter(p: i32) {}
+
+// Add Return Type -------------------------------------------------------------
+
+#[cfg(any(cfail1,cfail4))]
+pub fn add_return_type()       {}
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(cfg = "cfail2", except = "hir_owner, hir_owner_nodes")]
+#[rustc_clean(cfg = "cfail3")]
+#[rustc_clean(cfg = "cfail5", except = "hir_owner, hir_owner_nodes, optimized_mir")]
+#[rustc_clean(cfg = "cfail6")]
+pub fn add_return_type() -> () {}
+
+// Change Parameter Type -------------------------------------------------------
+
+#[cfg(any(cfail1,cfail4))]
+pub fn type_of_parameter(p: i32) {}
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(
+    cfg = "cfail2",
+    except = "hir_owner, hir_owner_nodes, optimized_mir, typeck, fn_sig"
+)]
+#[rustc_clean(cfg = "cfail3")]
+#[rustc_clean(
+    cfg = "cfail5",
+    except = "hir_owner, hir_owner_nodes, optimized_mir, typeck, fn_sig"
+)]
+#[rustc_clean(cfg = "cfail6")]
+pub fn type_of_parameter(p: i64) {}
+
+// Change Parameter Type Reference ---------------------------------------------
+
+#[cfg(any(cfail1,cfail4))]
+pub fn type_of_parameter_ref(p: &i32) {}
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(
+    cfg = "cfail2",
+    except = "hir_owner, hir_owner_nodes, optimized_mir, typeck, fn_sig"
+)]
+#[rustc_clean(cfg = "cfail3")]
+#[rustc_clean(
+    cfg = "cfail5",
+    except = "hir_owner, hir_owner_nodes, optimized_mir, typeck, fn_sig"
+)]
+#[rustc_clean(cfg = "cfail6")]
+pub fn type_of_parameter_ref(p: &mut i32) {}
+
+// Change Parameter Order ------------------------------------------------------
+
+#[cfg(any(cfail1,cfail4))]
+pub fn order_of_parameters(p1: i32, p2: i64) {}
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(
+    cfg = "cfail2",
+    except = "hir_owner, hir_owner_nodes, optimized_mir, typeck, fn_sig"
+)]
+#[rustc_clean(cfg = "cfail3")]
+#[rustc_clean(
+    cfg = "cfail5",
+    except = "hir_owner, hir_owner_nodes, optimized_mir, typeck, fn_sig"
+)]
+#[rustc_clean(cfg = "cfail6")]
+pub fn order_of_parameters(p2: i64, p1: i32) {}
+
+// Unsafe ----------------------------------------------------------------------
+
+#[cfg(any(cfail1,cfail4))]
+pub fn make_unsafe() {}
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(
+    cfg = "cfail2",
+    except = "hir_owner, hir_owner_nodes, optimized_mir, typeck, fn_sig"
+)]
+#[rustc_clean(cfg = "cfail3")]
+#[rustc_clean(
+    cfg = "cfail5",
+    except = "hir_owner, hir_owner_nodes, optimized_mir, typeck, fn_sig"
+)]
+#[rustc_clean(cfg = "cfail6")]
+pub unsafe fn make_unsafe() {}
+
+// Extern ----------------------------------------------------------------------
+
+#[cfg(any(cfail1,cfail4))]
+pub            fn make_extern() {}
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(cfg = "cfail2", except = "hir_owner, hir_owner_nodes, typeck, fn_sig")]
+#[rustc_clean(cfg = "cfail3")]
+#[rustc_clean(cfg = "cfail5", except = "hir_owner, hir_owner_nodes, typeck, fn_sig")]
+#[rustc_clean(cfg = "cfail6")]
+pub extern "C" fn make_extern() {}
+
+// Type Parameter --------------------------------------------------------------
+
+#[cfg(any(cfail1,cfail4))]
+pub fn type_parameter   () {}
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(
+    cfg = "cfail2",
+    except = "hir_owner, hir_owner_nodes, generics_of, type_of, predicates_of"
+)]
+#[rustc_clean(cfg = "cfail3")]
+#[rustc_clean(
+    cfg = "cfail5",
+    except = "hir_owner, hir_owner_nodes, generics_of, type_of, predicates_of"
+)]
+#[rustc_clean(cfg = "cfail6")]
+pub fn type_parameter<T>() {}
+
+// Lifetime Parameter ----------------------------------------------------------
+
+#[cfg(any(cfail1,cfail4))]
+pub fn lifetime_parameter    () {}
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(cfg = "cfail2", except = "hir_owner, hir_owner_nodes, generics_of,fn_sig")]
+#[rustc_clean(cfg = "cfail3")]
+#[rustc_clean(cfg = "cfail5", except = "hir_owner, hir_owner_nodes, generics_of,fn_sig")]
+#[rustc_clean(cfg = "cfail6")]
+pub fn lifetime_parameter<'a>() {}
+
+// Trait Bound -----------------------------------------------------------------
+
+#[cfg(any(cfail1,cfail4))]
+pub fn trait_bound<T    >() {}
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(cfg = "cfail2", except = "hir_owner, hir_owner_nodes, predicates_of")]
+#[rustc_clean(cfg = "cfail3")]
+pub fn trait_bound<T: Eq>() {}
+
+// Builtin Bound ---------------------------------------------------------------
+
+#[cfg(any(cfail1,cfail4))]
+pub fn builtin_bound<T      >() {}
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(cfg = "cfail2", except = "hir_owner, hir_owner_nodes, predicates_of")]
+#[rustc_clean(cfg = "cfail3")]
+#[rustc_clean(cfg = "cfail5", except = "hir_owner, hir_owner_nodes, predicates_of")]
+#[rustc_clean(cfg = "cfail6")]
+pub fn builtin_bound<T: Send>() {}
+
+// Lifetime Bound --------------------------------------------------------------
+
+#[cfg(any(cfail1,cfail4))]
+pub fn lifetime_bound<'a, T>() {}
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(
+    cfg = "cfail2",
+    except = "hir_owner, hir_owner_nodes, generics_of, type_of, predicates_of,fn_sig"
+)]
+#[rustc_clean(cfg = "cfail3")]
+#[rustc_clean(
+    cfg = "cfail5",
+    except = "hir_owner, hir_owner_nodes, generics_of, type_of, predicates_of,fn_sig,optimized_mir"
+)]
+#[rustc_clean(cfg = "cfail6")]
+pub fn lifetime_bound<'a, T: 'a>() {}
+
+// Second Trait Bound ----------------------------------------------------------
+
+#[cfg(any(cfail1,cfail4))]
+pub fn second_trait_bound<T: Eq        >() {}
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(cfg = "cfail2", except = "hir_owner, hir_owner_nodes, predicates_of")]
+#[rustc_clean(cfg = "cfail3")]
+pub fn second_trait_bound<T: Eq + Clone>() {}
+
+// Second Builtin Bound --------------------------------------------------------
+
+#[cfg(any(cfail1,cfail4))]
+pub fn second_builtin_bound<T: Send        >() {}
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(cfg = "cfail2", except = "hir_owner, hir_owner_nodes, predicates_of")]
+#[rustc_clean(cfg = "cfail3")]
+#[rustc_clean(cfg = "cfail5", except = "hir_owner, hir_owner_nodes, predicates_of")]
+#[rustc_clean(cfg = "cfail6")]
+pub fn second_builtin_bound<T: Send + Sized>() {}
+
+// Second Lifetime Bound -------------------------------------------------------
+
+#[cfg(any(cfail1,cfail4))]
+pub fn second_lifetime_bound<'a, 'b, T: 'a     >() {}
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(
+    cfg = "cfail2",
+    except = "hir_owner, hir_owner_nodes, generics_of, type_of, predicates_of,fn_sig"
+)]
+#[rustc_clean(cfg = "cfail3")]
+#[rustc_clean(
+    cfg = "cfail5",
+    except = "hir_owner, hir_owner_nodes, generics_of, type_of, predicates_of,fn_sig"
+)]
+#[rustc_clean(cfg = "cfail6")]
+pub fn second_lifetime_bound<'a, 'b, T: 'a + 'b>() {}
+
+// Inline ----------------------------------------------------------------------
+
+#[cfg(any(cfail1,cfail4))]
+pub fn inline() {}
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(cfg = "cfail2")]
+#[rustc_clean(cfg = "cfail3")]
+#[rustc_clean(cfg = "cfail5")]
+#[rustc_clean(cfg = "cfail6")]
+#[inline]
+pub fn inline() {}
+
+// Inline Never ----------------------------------------------------------------
+
+#[cfg(any(cfail1,cfail4))]
+#[inline(always)]
+pub fn inline_never() {}
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(cfg = "cfail2")]
+#[rustc_clean(cfg = "cfail3")]
+#[rustc_clean(cfg = "cfail5")]
+#[rustc_clean(cfg = "cfail6")]
+#[inline(never)]
+pub fn inline_never() {}
+
+// No Mangle -------------------------------------------------------------------
+
+#[cfg(any(cfail1,cfail4))]
+pub fn no_mangle() {}
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(cfg = "cfail2")]
+#[rustc_clean(cfg = "cfail3")]
+#[rustc_clean(cfg = "cfail5")]
+#[rustc_clean(cfg = "cfail6")]
+#[no_mangle]
+pub fn no_mangle() {}
+
+// Linkage ---------------------------------------------------------------------
+
+#[cfg(any(cfail1,cfail4))]
+pub fn linkage() {}
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(cfg = "cfail2")]
+#[rustc_clean(cfg = "cfail3")]
+#[rustc_clean(cfg = "cfail5")]
+#[rustc_clean(cfg = "cfail6")]
+#[linkage = "weak_odr"]
+pub fn linkage() {}
+
+// Return Impl Trait -----------------------------------------------------------
+
+#[cfg(any(cfail1,cfail4))]
+pub fn return_impl_trait() -> i32        {
+    0
+}
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(cfg = "cfail2", except = "hir_owner, hir_owner_nodes, typeck, fn_sig, optimized_mir")]
+#[rustc_clean(cfg = "cfail3")]
+#[rustc_clean(cfg = "cfail5", except = "hir_owner, hir_owner_nodes, typeck, fn_sig, optimized_mir")]
+#[rustc_clean(cfg = "cfail6")]
+pub fn return_impl_trait() -> impl Clone {
+    0
+}
+
+// Change Return Impl Trait ----------------------------------------------------
+
+#[cfg(any(cfail1,cfail4))]
+pub fn change_return_impl_trait() -> impl Clone {
+    0u32
+}
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(cfg = "cfail2")]
+#[rustc_clean(cfg = "cfail3")]
+#[rustc_clean(cfg = "cfail5")]
+#[rustc_clean(cfg = "cfail6")]
+pub fn change_return_impl_trait() -> impl  Copy {
+    0u32
+}
+
+// Change Return Type Indirectly -----------------------------------------------
+
+pub struct ReferencedType1;
+pub struct ReferencedType2;
+
+pub mod change_return_type_indirectly {
+    #[cfg(any(cfail1,cfail4))]
+    use super::ReferencedType1 as ReturnType;
+    #[cfg(not(any(cfail1,cfail4)))]
+    use super::ReferencedType2 as ReturnType;
+
+    #[rustc_clean(
+        cfg = "cfail2",
+        except = "hir_owner, hir_owner_nodes, optimized_mir, typeck, fn_sig"
+    )]
+    #[rustc_clean(cfg = "cfail3")]
+    #[rustc_clean(
+        cfg = "cfail5",
+        except = "hir_owner, hir_owner_nodes, optimized_mir, typeck, fn_sig"
+    )]
+    #[rustc_clean(cfg = "cfail6")]
+    pub fn indirect_return_type() -> ReturnType {
+        ReturnType {}
+    }
+}
+
+// Change Parameter Type Indirectly --------------------------------------------
+
+pub mod change_parameter_type_indirectly {
+    #[cfg(any(cfail1,cfail4))]
+    use super::ReferencedType1 as ParameterType;
+    #[cfg(not(any(cfail1,cfail4)))]
+    use super::ReferencedType2 as ParameterType;
+
+    #[rustc_clean(
+        cfg = "cfail2",
+        except = "hir_owner, hir_owner_nodes, optimized_mir, typeck, fn_sig"
+    )]
+    #[rustc_clean(cfg = "cfail3")]
+    #[rustc_clean(
+        cfg = "cfail5",
+        except = "hir_owner, hir_owner_nodes, optimized_mir, typeck, fn_sig"
+    )]
+    #[rustc_clean(cfg = "cfail6")]
+    pub fn indirect_parameter_type(p: ParameterType) {}
+}
+
+// Change Trait Bound Indirectly -----------------------------------------------
+
+pub trait ReferencedTrait1 {}
+pub trait ReferencedTrait2 {}
+
+pub mod change_trait_bound_indirectly {
+    #[cfg(any(cfail1,cfail4))]
+    use super::ReferencedTrait1 as Trait;
+    #[cfg(not(any(cfail1,cfail4)))]
+    use super::ReferencedTrait2 as Trait;
+
+    #[rustc_clean(cfg = "cfail2", except = "hir_owner, hir_owner_nodes, predicates_of")]
+    #[rustc_clean(cfg = "cfail3")]
+    #[rustc_clean(cfg = "cfail5", except = "hir_owner, hir_owner_nodes, predicates_of")]
+    #[rustc_clean(cfg = "cfail6")]
+    pub fn indirect_trait_bound<T: Trait>(p: T) {}
+}
+
+// Change Trait Bound Indirectly In Where Clause -------------------------------
+
+pub mod change_trait_bound_indirectly_in_where_clause {
+    #[cfg(any(cfail1,cfail4))]
+    use super::ReferencedTrait1 as Trait;
+    #[cfg(not(any(cfail1,cfail4)))]
+    use super::ReferencedTrait2 as Trait;
+
+    #[rustc_clean(cfg = "cfail2", except = "hir_owner, hir_owner_nodes, predicates_of")]
+    #[rustc_clean(cfg = "cfail3")]
+    #[rustc_clean(cfg = "cfail5", except = "hir_owner, hir_owner_nodes, predicates_of")]
+    #[rustc_clean(cfg = "cfail6")]
+    pub fn indirect_trait_bound_where<T>(p: T)
+    where
+        T: Trait,
+    {
+    }
+}