mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-10-05 19:51:09 +01:00
Dana Jansens
4261bb2dd2
In #7436 we stopped substituting `.Self` when collecting witnesses out of a facet type. While this was correct, it did not capture all the cases that need to avoid substituting `.Self`. And it poisoned the `IdentifiedFacetType` cache by not replacing `.Self` but storing the result in the cache. This led to incoherent behaviour, where the result of an impl lookup would change depending on which ones had been done previously. Now we use a flag to track for each `.Self` if we're currently type-checking inside the scope where it was introduced in a facet type. While inside that scope, identify should not replace the `.Self`. Any use of it should remain as-is since we don't yet know what value will replace it. We call this state "frozen" since it should not be modified by identify. This requires a substitution step when we leave the scope that introduced the `.Self`, to remove the flag. The flag is set in the `EntityName` of the `SymbolicBinding`, and is part of the canonical value, since `.Self` can become part of types, which are constants, and the flag needs to follow it for correct behaviour. We also have to ensure the flag is the same when doing comparison with constants from inside a facet type and constants from outside. For instance in `(Z where .Z1 = ()) where .Z2 = .Z1`, when we arrive at the second `.Z1` its `.Self` will be frozen, while the `.Z1 = ()` contains a non-frozen `.Self`. So we add the frozen flag to the first when storing it in `where_stack` in order to compare the constant values of the two `.Z1`. The `WhereExpr` requirement inst kinds now have an `InstConstantKind` of `AlwaysUnique` instead of `Never`. This allows us to add them to the usual InstBlocks, and in an `eval fn` body they have a constant value, so eval does not fail when trying to call that function. We have to be careful to not consider `AlwaysUnique` as being actually concrete though, since their constant value erases `.Self`-dependence. This allows us to stop special casing them when thawing the requirements block in a `WhereExpr`, and we can just thaw each `InstId` in the block in a straightforward manner. We add the new flag to the instruction's fingerprint and name in formatted semir.
609 lines
36 KiB
Plaintext
609 lines
36 KiB
Plaintext
// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
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// Exceptions. See /LICENSE for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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// INCLUDE-FILE: toolchain/testing/testdata/min_prelude/none.carbon
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//
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// AUTOUPDATE
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// TIP: To test this file alone, run:
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// TIP: bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/check/testdata/impl/impl_assoc_const.carbon
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// TIP: To dump output, run:
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// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/impl/impl_assoc_const.carbon
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// --- success.carbon
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library "[[@TEST_NAME]]";
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interface I { let T:! type; }
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impl () as I where .T = {} {}
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// --- success_associated.carbon
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library "[[@TEST_NAME]]";
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interface I { let T:! type; let U:! type; }
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impl () as I where .T = .U and .U = {} {}
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// --- redecl.carbon
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library "[[@TEST_NAME]]";
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interface I2 { let T2:! type; }
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impl () as I2 where .T2 = {};
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impl () as I2 where .T2 = {} {}
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// --- fail_redecl_adds_rewrites.carbon
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library "[[@TEST_NAME]]";
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interface I3 { let T3:! type; }
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// CHECK:STDERR: fail_redecl_adds_rewrites.carbon:[[@LINE+4]]:1: error: impl declared but not defined [ImplMissingDefinition]
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// CHECK:STDERR: impl () as I3;
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// CHECK:STDERR: ^~~~~~~~~~~~~~
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// CHECK:STDERR:
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impl () as I3;
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impl () as I3 where .T3 = {} {}
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// --- fail_mismatch.carbon
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library "[[@TEST_NAME]]";
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interface J { let U:! type; }
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// CHECK:STDERR: fail_mismatch.carbon:[[@LINE+4]]:1: error: impl declared but not defined [ImplMissingDefinition]
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// CHECK:STDERR: impl () as J where .U = {};
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// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~~~~~
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// CHECK:STDERR:
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impl () as J where .U = {};
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impl () as J where .U = () {}
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// --- fail_mismatch_bad_value.carbon
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library "[[@TEST_NAME]]";
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interface I4 {
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let T4:! type;
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let T5:! type;
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let T6:! type;
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}
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// CHECK:STDERR: fail_mismatch_bad_value.carbon:[[@LINE+8]]:27: error: name `BAD1` not found [NameNotFound]
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// CHECK:STDERR: impl () as I4 where .T4 = BAD1 and .T5 = {.a: {}} and .T6 = BAD2;
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// CHECK:STDERR: ^~~~
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// CHECK:STDERR:
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// CHECK:STDERR: fail_mismatch_bad_value.carbon:[[@LINE+4]]:61: error: name `BAD2` not found [NameNotFound]
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// CHECK:STDERR: impl () as I4 where .T4 = BAD1 and .T5 = {.a: {}} and .T6 = BAD2;
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// CHECK:STDERR: ^~~~
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// CHECK:STDERR:
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impl () as I4 where .T4 = BAD1 and .T5 = {.a: {}} and .T6 = BAD2;
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// CHECK:STDERR: fail_mismatch_bad_value.carbon:[[@LINE+8]]:46: error: name `BAD3` not found [NameNotFound]
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// CHECK:STDERR: impl () as I4 where .T4 = {.b: {}} and .T5 = BAD3 and .T6 = BAD4 {}
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// CHECK:STDERR: ^~~~
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// CHECK:STDERR:
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// CHECK:STDERR: fail_mismatch_bad_value.carbon:[[@LINE+4]]:61: error: name `BAD4` not found [NameNotFound]
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// CHECK:STDERR: impl () as I4 where .T4 = {.b: {}} and .T5 = BAD3 and .T6 = BAD4 {}
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// CHECK:STDERR: ^~~~
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// CHECK:STDERR:
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impl () as I4 where .T4 = {.b: {}} and .T5 = BAD3 and .T6 = BAD4 {}
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// --- fail_missing_on_definition.carbon
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library "[[@TEST_NAME]]";
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interface K { let V:! type; }
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impl () as K where .V = {};
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// CHECK:STDERR: fail_missing_on_definition.carbon:[[@LINE+11]]:1: error: associated constant V not given a value in impl of interface K [ImplAssociatedConstantNeedsValue]
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// CHECK:STDERR: impl () as K {}
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// CHECK:STDERR: ^~~~~~~~~~~~~~
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// CHECK:STDERR: fail_missing_on_definition.carbon:[[@LINE-6]]:19: note: associated constant declared here [AssociatedConstantHere]
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// CHECK:STDERR: interface K { let V:! type; }
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// CHECK:STDERR: ^~~~~~~~
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// CHECK:STDERR:
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// CHECK:STDERR: fail_missing_on_definition.carbon:[[@LINE-8]]:1: error: impl declared but not defined [ImplMissingDefinition]
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// CHECK:STDERR: impl () as K where .V = {};
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// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~~~~~
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// CHECK:STDERR:
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impl () as K {}
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// --- fail_two_different.carbon
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library "[[@TEST_NAME]]";
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interface L { let W:! type; }
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// CHECK:STDERR: fail_two_different.carbon:[[@LINE+4]]:12: error: associated constant `.(L.W)` given two different values `{}` and `()` [AssociatedConstantWithDifferentValues]
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// CHECK:STDERR: impl () as L where .W = {} and .W = () {}
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// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~~~~~
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// CHECK:STDERR:
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impl () as L where .W = {} and .W = () {}
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// --- fail_two_different_first_associated.carbon
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library "[[@TEST_NAME]]";
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interface L2 { let W2:! type; let X2:! type; }
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// CHECK:STDERR: fail_two_different_first_associated.carbon:[[@LINE+4]]:12: error: associated constant `.(L2.W2)` given two different values `()` and `.(L2.X2)` [AssociatedConstantWithDifferentValues]
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// CHECK:STDERR: impl () as L2 where .W2 = .X2 and .W2 = () {}
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// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// CHECK:STDERR:
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impl () as L2 where .W2 = .X2 and .W2 = () {}
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// --- fail_two_different_second_associated.carbon
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library "[[@TEST_NAME]]";
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interface L2 { let W2:! type; let X2:! type; }
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// CHECK:STDERR: fail_two_different_second_associated.carbon:[[@LINE+4]]:12: error: associated constant `.(L2.W2)` given two different values `()` and `.(L2.X2)` [AssociatedConstantWithDifferentValues]
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// CHECK:STDERR: impl () as L2 where .W2 = () and .W2 = .X2 {}
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// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// CHECK:STDERR:
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impl () as L2 where .W2 = () and .W2 = .X2 {}
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// --- fail_two_different_first_bad.carbon
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library "[[@TEST_NAME]]";
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interface L2 { let W2:! type; }
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// CHECK:STDERR: fail_two_different_first_bad.carbon:[[@LINE+4]]:27: error: name `BAD5` not found [NameNotFound]
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// CHECK:STDERR: impl () as L2 where .W2 = BAD5 and .W2 = () {}
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// CHECK:STDERR: ^~~~
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// CHECK:STDERR:
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impl () as L2 where .W2 = BAD5 and .W2 = () {}
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// --- fail_two_different_second_bad.carbon
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library "[[@TEST_NAME]]";
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interface L3 { let W3:! type; }
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// CHECK:STDERR: fail_two_different_second_bad.carbon:[[@LINE+4]]:40: error: name `BAD6` not found [NameNotFound]
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// CHECK:STDERR: impl () as L3 where .W3 = {} and .W3 = BAD6 {}
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// CHECK:STDERR: ^~~~
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// CHECK:STDERR:
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impl () as L3 where .W3 = {} and .W3 = BAD6 {}
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// --- fail_two_different_both_bad.carbon
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library "[[@TEST_NAME]]";
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interface L4 { let W4:! type; }
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// CHECK:STDERR: fail_two_different_both_bad.carbon:[[@LINE+8]]:27: error: name `BAD7` not found [NameNotFound]
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// CHECK:STDERR: impl () as L4 where .W4 = BAD7 and .W4 = BAD8 {}
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// CHECK:STDERR: ^~~~
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// CHECK:STDERR:
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// CHECK:STDERR: fail_two_different_both_bad.carbon:[[@LINE+4]]:42: error: name `BAD8` not found [NameNotFound]
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// CHECK:STDERR: impl () as L4 where .W4 = BAD7 and .W4 = BAD8 {}
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// CHECK:STDERR: ^~~~
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// CHECK:STDERR:
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impl () as L4 where .W4 = BAD7 and .W4 = BAD8 {}
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// --- fail_many_different.carbon
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library "[[@TEST_NAME]]";
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interface L { let W:! type; }
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// The facet type should have a single rewrite with `<error>` in the RHS (they
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// are all errors, and they get deduped).
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//
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//@dump-sem-ir-begin
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// CHECK:STDERR: fail_many_different.carbon:[[@LINE+4]]:12: error: associated constant `.(L.W)` given two different values `((), (), ())` and `({}, (), ())` [AssociatedConstantWithDifferentValues]
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// CHECK:STDERR: impl () as L where .W = ((), (), ()) and .W = ({}, (), ()) and .W = ({}, {}, ()) and .W = ({}, (), {}) {}
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// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// CHECK:STDERR:
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impl () as L where .W = ((), (), ()) and .W = ({}, (), ()) and .W = ({}, {}, ()) and .W = ({}, (), {}) {}
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//@dump-sem-ir-end
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// --- repeated.carbon
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library "[[@TEST_NAME]]";
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interface M { let X:! type; }
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impl () as M where .X = {} and .X = {} {}
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// --- repeated_associated.carbon
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library "[[@TEST_NAME]]";
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interface M { let X:! type; let Y:! type; }
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impl () as M where .X = .Y and .X = .Y and .Y = () {}
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// --- repeated_concrete_value_and_associated.carbon
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library "[[@TEST_NAME]]";
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interface M { let X:! type; let Y:! type; }
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impl () as M where .X = () and .Y = .X and .X = .Y {}
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impl {} as M where .X = () and .X = .X and .Y = () {}
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// --- fail_repeated_and_different.carbon
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library "[[@TEST_NAME]]";
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interface M { let X:! type; }
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// CHECK:STDERR: fail_repeated_and_different.carbon:[[@LINE+4]]:12: error: associated constant `.(M.X)` given two different values `{}` and `()` [AssociatedConstantWithDifferentValues]
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// CHECK:STDERR: impl () as M where .X = {} and .X = () and .X = {} {}
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// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// CHECK:STDERR:
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impl () as M where .X = {} and .X = () and .X = {} {}
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// --- fail_cycle_single.carbon
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library "[[@TEST_NAME]]";
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interface M { let X:! type; }
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// This fails because it resolves to `.X = .X` which is cyclical.
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//
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// CHECK:STDERR: fail_cycle_single.carbon:[[@LINE+4]]:12: error: found cycle in facet type constraint for `.(M.X)` [FacetTypeConstraintCycle]
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// CHECK:STDERR: impl () as M where .X = .X {}
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// CHECK:STDERR: ^~~~~~~~~~~~~~~
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// CHECK:STDERR:
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impl () as M where .X = .X {}
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// Even though `.X = ()` is specified, the rewrites are resolved left to right
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// and a cycle `.X = .X` is found first.
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//
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// CHECK:STDERR: fail_cycle_single.carbon:[[@LINE+4]]:12: error: found cycle in facet type constraint for `.(M.X)` [FacetTypeConstraintCycle]
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// CHECK:STDERR: impl () as M where .X = .X and .X = () {}
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// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~~~~~
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// CHECK:STDERR:
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impl () as M where .X = .X and .X = () {}
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// --- fail_cycle.carbon
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library "[[@TEST_NAME]]";
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interface M { let X:! type; let Y:! type; let Z:! type; }
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// This fails because it resolves to `.X = .X` which is cyclical.
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// The value of .X and .Y becomes <error> but .Z is still valid.
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//
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//@dump-sem-ir-begin
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// CHECK:STDERR: fail_cycle.carbon:[[@LINE+4]]:12: error: found cycle in facet type constraint for `.(M.Y)` [FacetTypeConstraintCycle]
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// CHECK:STDERR: impl () as M where .X = .Y and .Y = .X and .Z = () {}
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// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// CHECK:STDERR:
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impl () as M where .X = .Y and .Y = .X and .Z = () {}
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//@dump-sem-ir-end
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// --- fail_todo_cycle_between_interfaces.carbon
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library "[[@TEST_NAME]]";
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interface I {
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let X1:! type;
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let X2:! type;
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}
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interface J {
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let X3:! type;
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}
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// TODO: This should fail due to a cyclic definition of each value. But right
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// now it's failing due to compound member access in a rewrite constraint not
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// working.
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//
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// CHECK:STDERR: fail_todo_cycle_between_interfaces.carbon:[[@LINE+12]]:45: error: expected identifier or `Self` after `.` [ExpectedIdentifierOrSelfAfterPeriod]
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// CHECK:STDERR: impl () as I where .Self impls J and .X1 = .(J.X3) and .X2 = .X1 and .(J.X3) = .X2 {}
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// CHECK:STDERR: ^
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// CHECK:STDERR:
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// CHECK:STDERR: fail_todo_cycle_between_interfaces.carbon:[[@LINE+8]]:45: error: semantics TODO: `handle invalid parse trees in `check`` [SemanticsTodo]
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// CHECK:STDERR: impl () as I where .Self impls J and .X1 = .(J.X3) and .X2 = .X1 and .(J.X3) = .X2 {}
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// CHECK:STDERR: ^
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// CHECK:STDERR:
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// CHECK:STDERR: fail_todo_cycle_between_interfaces.carbon:[[@LINE+4]]:71: error: expected identifier or `Self` after `.` [ExpectedIdentifierOrSelfAfterPeriod]
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// CHECK:STDERR: impl () as I where .Self impls J and .X1 = .(J.X3) and .X2 = .X1 and .(J.X3) = .X2 {}
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// CHECK:STDERR: ^
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// CHECK:STDERR:
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impl () as I where .Self impls J and .X1 = .(J.X3) and .X2 = .X1 and .(J.X3) = .X2 {}
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// --- non-type.carbon
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library "[[@TEST_NAME]]";
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interface N {
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let Y:! {.a: {}};
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}
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impl () as N where .Y = {.a = {}} { }
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// --- non-type_repeated.carbon
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library "[[@TEST_NAME]]";
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interface N {
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let Y:! {.a: {}};
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}
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impl () as N where .Y = {.a = {}} and .Y = {.a = {}} { }
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// --- fail_non-type_different.carbon
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library "[[@TEST_NAME]]";
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interface N {
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let Y:! {.a: type};
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}
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// CHECK:STDERR: fail_non-type_different.carbon:[[@LINE+4]]:12: error: associated constant `.(N.Y)` given two different values `{.a = {}}` and `{.a = ()}` [AssociatedConstantWithDifferentValues]
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// CHECK:STDERR: impl () as N where .Y = {.a = {}} and .Y = {.a = ()} {}
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// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// CHECK:STDERR:
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impl () as N where .Y = {.a = {}} and .Y = {.a = ()} {}
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// --- fail_where_rewrite_function.carbon
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library "[[@TEST_NAME]]";
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interface IF { fn F(); }
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class CD { }
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// CHECK:STDERR: fail_where_rewrite_function.carbon:[[@LINE+4]]:12: error: rewrite specified for associated function F [RewriteForAssociatedFunction]
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// CHECK:STDERR: impl CD as IF where .F = 0 {
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// CHECK:STDERR: ^~~~~~~~~~~~~~~
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// CHECK:STDERR:
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impl CD as IF where .F = 0 {
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fn F() {}
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}
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// --- facet_type_in_assoc_constant.carbon
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library "[[@TEST_NAME]]";
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interface M { let X:! type; }
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constraint N {
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extend require impls M where .X = {};
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}
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impl () as M where .X = N {}
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// --- fail_todo_period_self_impl_lookup.carbon
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library "[[@TEST_NAME]]";
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interface Y {}
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interface Z {
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let Z1:! Y;
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}
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class C;
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impl C as Y {}
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// Implied constraint: .Self impls Y. Should be verified when finishing the impl
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// decl (where we know .Self is C). See:
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// https://discord.com/channels/655572317891461132/941071822756143115/1400953094015160370
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//
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// CHECK:STDERR: fail_todo_period_self_impl_lookup.carbon:[[@LINE+4]]:25: error: cannot convert type `.Self` that implements `Z` into type implementing `Y` [ConversionFailureFacetToFacet]
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// CHECK:STDERR: impl C as Z where .Z1 = .Self {}
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// CHECK:STDERR: ^~~~~
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// CHECK:STDERR:
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impl C as Z where .Z1 = .Self {}
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// --- fail_todo_period_self_compared_with_concrete_self.carbon
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library "[[@TEST_NAME]]";
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interface Y {}
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interface Z {
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let Z1:! Y;
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}
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class C;
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impl C as Y {}
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impl C as Z where .Z1 = C {}
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// Implied constraint: .Self impls Y. Should be verified against the type of the
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// facet value replacing T when calling F.
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//
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// CHECK:STDERR: fail_todo_period_self_compared_with_concrete_self.carbon:[[@LINE+4]]:31: error: cannot convert type `.Self` that implements `Z` into type implementing `Y` [ConversionFailureFacetToFacet]
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// CHECK:STDERR: fn F(unused T:! Z where .Z1 = .Self) {}
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// CHECK:STDERR: ^~~~~
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// CHECK:STDERR:
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fn F(unused T:! Z where .Z1 = .Self) {}
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fn G() {
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F(C);
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// Implied constraint: .Self impls Y. Should be verified against the type of
|
|
// the facet value of C when casting.
|
|
//
|
|
// CHECK:STDERR: fail_todo_period_self_compared_with_concrete_self.carbon:[[@LINE+4]]:23: error: cannot convert type `.Self` that implements `Z` into type implementing `Y` [ConversionFailureFacetToFacet]
|
|
// CHECK:STDERR: C as (Z where .Z1 = .Self);
|
|
// CHECK:STDERR: ^~~~~
|
|
// CHECK:STDERR:
|
|
C as (Z where .Z1 = .Self);
|
|
}
|
|
|
|
// CHECK:STDOUT: --- fail_many_different.carbon
|
|
// CHECK:STDOUT:
|
|
// CHECK:STDOUT: constants {
|
|
// CHECK:STDOUT: %L.type: type = facet_type <@L> [concrete]
|
|
// CHECK:STDOUT: %L.assoc_type: type = assoc_entity_type @L [concrete]
|
|
// CHECK:STDOUT: %assoc0: %L.assoc_type = assoc_entity element0, @L.WithSelf.%W [concrete]
|
|
// CHECK:STDOUT: %empty_tuple.type: type = tuple_type () [concrete]
|
|
// CHECK:STDOUT: %empty_tuple: %empty_tuple.type = tuple_value () [concrete]
|
|
// CHECK:STDOUT: %.Self.frozen: %L.type = symbolic_binding .Self [symbolic_self]
|
|
// CHECK:STDOUT: %.Self.frozen.as_type: type = facet_access_type %.Self.frozen [symbolic_self]
|
|
// CHECK:STDOUT: %L.lookup_impl_witness.b2f: <witness> = lookup_impl_witness %.Self.frozen, @L [symbolic_self]
|
|
// CHECK:STDOUT: %impl.elem0.faf: type = impl_witness_access %L.lookup_impl_witness.b2f, element0 [symbolic_self]
|
|
// CHECK:STDOUT: %tuple.type.2d5: type = tuple_type (%empty_tuple.type, %empty_tuple.type, %empty_tuple.type) [concrete]
|
|
// CHECK:STDOUT: %tuple.7e4: %tuple.type.2d5 = tuple_value (%empty_tuple, %empty_tuple, %empty_tuple) [concrete]
|
|
// CHECK:STDOUT: %empty_struct_type: type = struct_type {} [concrete]
|
|
// CHECK:STDOUT: %empty_struct: %empty_struct_type = struct_value () [concrete]
|
|
// CHECK:STDOUT: %tuple.type.e5a: type = tuple_type (%empty_struct_type, %empty_tuple.type, %empty_tuple.type) [concrete]
|
|
// CHECK:STDOUT: %tuple.b36: %tuple.type.e5a = tuple_value (%empty_struct, %empty_tuple, %empty_tuple) [concrete]
|
|
// CHECK:STDOUT: %tuple.type.d7e: type = tuple_type (%empty_struct_type, %empty_struct_type, %empty_tuple.type) [concrete]
|
|
// CHECK:STDOUT: %tuple.8ed: %tuple.type.d7e = tuple_value (%empty_struct, %empty_struct, %empty_tuple) [concrete]
|
|
// CHECK:STDOUT: %tuple.type.bd8: type = tuple_type (%empty_struct_type, %empty_tuple.type, %empty_struct_type) [concrete]
|
|
// CHECK:STDOUT: %tuple.d90: %tuple.type.bd8 = tuple_value (%empty_struct, %empty_tuple, %empty_struct) [concrete]
|
|
// CHECK:STDOUT: %.Self: %L.type = symbolic_binding .Self [symbolic_self]
|
|
// CHECK:STDOUT: %L.lookup_impl_witness.2ad: <witness> = lookup_impl_witness %.Self, @L [symbolic_self]
|
|
// CHECK:STDOUT: %impl.elem0.c42: type = impl_witness_access %L.lookup_impl_witness.2ad, element0 [symbolic_self]
|
|
// CHECK:STDOUT: }
|
|
// CHECK:STDOUT:
|
|
// CHECK:STDOUT: file {
|
|
// CHECK:STDOUT: impl_decl @empty_tuple.type.as.<error>.impl [concrete] {} {
|
|
// CHECK:STDOUT: %.loc13_7.1: %empty_tuple.type = tuple_literal () [concrete = constants.%empty_tuple]
|
|
// CHECK:STDOUT: %.loc13_7.2: type = converted %.loc13_7.1, constants.%empty_tuple.type [concrete = constants.%empty_tuple.type]
|
|
// CHECK:STDOUT: %L.ref: type = name_ref L, file.%L.decl [concrete = constants.%L.type]
|
|
// CHECK:STDOUT: %.Self.frozen: %L.type = symbolic_binding .Self [symbolic_self = constants.%.Self.frozen]
|
|
// CHECK:STDOUT: %base_facet_type = requirement_base_facet_type %L.ref [concrete]
|
|
// CHECK:STDOUT: %.Self.ref.loc13_20: %L.type = name_ref .Self, %.Self.frozen [symbolic_self = constants.%.Self.frozen]
|
|
// CHECK:STDOUT: %.Self.as_type.loc13_20: type = facet_access_type %.Self.ref.loc13_20 [symbolic_self = constants.%.Self.frozen.as_type]
|
|
// CHECK:STDOUT: %.loc13_20: type = converted %.Self.ref.loc13_20, %.Self.as_type.loc13_20 [symbolic_self = constants.%.Self.frozen.as_type]
|
|
// CHECK:STDOUT: %W.ref.loc13_20: %L.assoc_type = name_ref W, @W.%assoc0 [concrete = constants.%assoc0]
|
|
// CHECK:STDOUT: %impl.elem0.loc13_20.1: type = impl_witness_access constants.%L.lookup_impl_witness.b2f, element0 [symbolic_self = constants.%impl.elem0.faf]
|
|
// CHECK:STDOUT: %.loc13_27: %empty_tuple.type = tuple_literal () [concrete = constants.%empty_tuple]
|
|
// CHECK:STDOUT: %.loc13_31: %empty_tuple.type = tuple_literal () [concrete = constants.%empty_tuple]
|
|
// CHECK:STDOUT: %.loc13_35: %empty_tuple.type = tuple_literal () [concrete = constants.%empty_tuple]
|
|
// CHECK:STDOUT: %.loc13_36.1: %tuple.type.2d5 = tuple_literal (%.loc13_27, %.loc13_31, %.loc13_35) [concrete = constants.%tuple.7e4]
|
|
// CHECK:STDOUT: %.loc13_36.2: type = converted constants.%empty_tuple, constants.%empty_tuple.type [concrete = constants.%empty_tuple.type]
|
|
// CHECK:STDOUT: %.loc13_36.3: type = converted constants.%empty_tuple, constants.%empty_tuple.type [concrete = constants.%empty_tuple.type]
|
|
// CHECK:STDOUT: %.loc13_36.4: type = converted constants.%empty_tuple, constants.%empty_tuple.type [concrete = constants.%empty_tuple.type]
|
|
// CHECK:STDOUT: %.loc13_36.5: type = converted %.loc13_36.1, constants.%tuple.type.2d5 [concrete = constants.%tuple.type.2d5]
|
|
// CHECK:STDOUT: %rewrite.loc13_23.1 = requirement_rewrite %impl.elem0.loc13_20.1, %.loc13_36.5 [concrete]
|
|
// CHECK:STDOUT: %.Self.ref.loc13_42: %L.type = name_ref .Self, %.Self.frozen [symbolic_self = constants.%.Self.frozen]
|
|
// CHECK:STDOUT: %.Self.as_type.loc13_42: type = facet_access_type %.Self.ref.loc13_42 [symbolic_self = constants.%.Self.frozen.as_type]
|
|
// CHECK:STDOUT: %.loc13_42: type = converted %.Self.ref.loc13_42, %.Self.as_type.loc13_42 [symbolic_self = constants.%.Self.frozen.as_type]
|
|
// CHECK:STDOUT: %W.ref.loc13_42: %L.assoc_type = name_ref W, @W.%assoc0 [concrete = constants.%assoc0]
|
|
// CHECK:STDOUT: %impl.elem0.loc13_42.1: type = impl_witness_access constants.%L.lookup_impl_witness.b2f, element0 [symbolic_self = constants.%impl.elem0.faf]
|
|
// CHECK:STDOUT: %impl.elem0.subst.loc13_42.1: type = impl_witness_access_substituted %impl.elem0.loc13_42.1, %.loc13_36.5 [concrete = constants.%tuple.type.2d5]
|
|
// CHECK:STDOUT: %.loc13_49: %empty_struct_type = struct_literal () [concrete = constants.%empty_struct]
|
|
// CHECK:STDOUT: %.loc13_53: %empty_tuple.type = tuple_literal () [concrete = constants.%empty_tuple]
|
|
// CHECK:STDOUT: %.loc13_57: %empty_tuple.type = tuple_literal () [concrete = constants.%empty_tuple]
|
|
// CHECK:STDOUT: %.loc13_58.1: %tuple.type.e5a = tuple_literal (%.loc13_49, %.loc13_53, %.loc13_57) [concrete = constants.%tuple.b36]
|
|
// CHECK:STDOUT: %.loc13_58.2: type = converted constants.%empty_struct, constants.%empty_struct_type [concrete = constants.%empty_struct_type]
|
|
// CHECK:STDOUT: %.loc13_58.3: type = converted constants.%empty_tuple, constants.%empty_tuple.type [concrete = constants.%empty_tuple.type]
|
|
// CHECK:STDOUT: %.loc13_58.4: type = converted constants.%empty_tuple, constants.%empty_tuple.type [concrete = constants.%empty_tuple.type]
|
|
// CHECK:STDOUT: %.loc13_58.5: type = converted %.loc13_58.1, constants.%tuple.type.e5a [concrete = constants.%tuple.type.e5a]
|
|
// CHECK:STDOUT: %rewrite.loc13_45.1 = requirement_rewrite %impl.elem0.subst.loc13_42.1, %.loc13_58.5 [concrete]
|
|
// CHECK:STDOUT: %.Self.ref.loc13_64: %L.type = name_ref .Self, %.Self.frozen [symbolic_self = constants.%.Self.frozen]
|
|
// CHECK:STDOUT: %.Self.as_type.loc13_64: type = facet_access_type %.Self.ref.loc13_64 [symbolic_self = constants.%.Self.frozen.as_type]
|
|
// CHECK:STDOUT: %.loc13_64: type = converted %.Self.ref.loc13_64, %.Self.as_type.loc13_64 [symbolic_self = constants.%.Self.frozen.as_type]
|
|
// CHECK:STDOUT: %W.ref.loc13_64: %L.assoc_type = name_ref W, @W.%assoc0 [concrete = constants.%assoc0]
|
|
// CHECK:STDOUT: %impl.elem0.loc13_64.1: type = impl_witness_access constants.%L.lookup_impl_witness.b2f, element0 [symbolic_self = constants.%impl.elem0.faf]
|
|
// CHECK:STDOUT: %impl.elem0.subst.loc13_64.1: type = impl_witness_access_substituted %impl.elem0.loc13_64.1, %.loc13_36.5 [concrete = constants.%tuple.type.2d5]
|
|
// CHECK:STDOUT: %.loc13_71: %empty_struct_type = struct_literal () [concrete = constants.%empty_struct]
|
|
// CHECK:STDOUT: %.loc13_75: %empty_struct_type = struct_literal () [concrete = constants.%empty_struct]
|
|
// CHECK:STDOUT: %.loc13_79: %empty_tuple.type = tuple_literal () [concrete = constants.%empty_tuple]
|
|
// CHECK:STDOUT: %.loc13_80.1: %tuple.type.d7e = tuple_literal (%.loc13_71, %.loc13_75, %.loc13_79) [concrete = constants.%tuple.8ed]
|
|
// CHECK:STDOUT: %.loc13_80.2: type = converted constants.%empty_struct, constants.%empty_struct_type [concrete = constants.%empty_struct_type]
|
|
// CHECK:STDOUT: %.loc13_80.3: type = converted constants.%empty_struct, constants.%empty_struct_type [concrete = constants.%empty_struct_type]
|
|
// CHECK:STDOUT: %.loc13_80.4: type = converted constants.%empty_tuple, constants.%empty_tuple.type [concrete = constants.%empty_tuple.type]
|
|
// CHECK:STDOUT: %.loc13_80.5: type = converted %.loc13_80.1, constants.%tuple.type.d7e [concrete = constants.%tuple.type.d7e]
|
|
// CHECK:STDOUT: %rewrite.loc13_67.1 = requirement_rewrite %impl.elem0.subst.loc13_64.1, %.loc13_80.5 [concrete]
|
|
// CHECK:STDOUT: %.Self.ref.loc13_86: %L.type = name_ref .Self, %.Self.frozen [symbolic_self = constants.%.Self.frozen]
|
|
// CHECK:STDOUT: %.Self.as_type.loc13_86: type = facet_access_type %.Self.ref.loc13_86 [symbolic_self = constants.%.Self.frozen.as_type]
|
|
// CHECK:STDOUT: %.loc13_86: type = converted %.Self.ref.loc13_86, %.Self.as_type.loc13_86 [symbolic_self = constants.%.Self.frozen.as_type]
|
|
// CHECK:STDOUT: %W.ref.loc13_86: %L.assoc_type = name_ref W, @W.%assoc0 [concrete = constants.%assoc0]
|
|
// CHECK:STDOUT: %impl.elem0.loc13_86.1: type = impl_witness_access constants.%L.lookup_impl_witness.b2f, element0 [symbolic_self = constants.%impl.elem0.faf]
|
|
// CHECK:STDOUT: %impl.elem0.subst.loc13_86.1: type = impl_witness_access_substituted %impl.elem0.loc13_86.1, %.loc13_36.5 [concrete = constants.%tuple.type.2d5]
|
|
// CHECK:STDOUT: %.loc13_93: %empty_struct_type = struct_literal () [concrete = constants.%empty_struct]
|
|
// CHECK:STDOUT: %.loc13_97: %empty_tuple.type = tuple_literal () [concrete = constants.%empty_tuple]
|
|
// CHECK:STDOUT: %.loc13_101: %empty_struct_type = struct_literal () [concrete = constants.%empty_struct]
|
|
// CHECK:STDOUT: %.loc13_102.1: %tuple.type.bd8 = tuple_literal (%.loc13_93, %.loc13_97, %.loc13_101) [concrete = constants.%tuple.d90]
|
|
// CHECK:STDOUT: %.loc13_102.2: type = converted constants.%empty_struct, constants.%empty_struct_type [concrete = constants.%empty_struct_type]
|
|
// CHECK:STDOUT: %.loc13_102.3: type = converted constants.%empty_tuple, constants.%empty_tuple.type [concrete = constants.%empty_tuple.type]
|
|
// CHECK:STDOUT: %.loc13_102.4: type = converted constants.%empty_struct, constants.%empty_struct_type [concrete = constants.%empty_struct_type]
|
|
// CHECK:STDOUT: %.loc13_102.5: type = converted %.loc13_102.1, constants.%tuple.type.bd8 [concrete = constants.%tuple.type.bd8]
|
|
// CHECK:STDOUT: %rewrite.loc13_89.1 = requirement_rewrite %impl.elem0.subst.loc13_86.1, %.loc13_102.5 [concrete]
|
|
// CHECK:STDOUT: %impl.elem0.loc13_20.2: type = impl_witness_access constants.%L.lookup_impl_witness.2ad, element0 [symbolic_self = constants.%impl.elem0.c42]
|
|
// CHECK:STDOUT: %rewrite.loc13_23.2 = requirement_rewrite %impl.elem0.loc13_20.2, %.loc13_36.5 [concrete]
|
|
// CHECK:STDOUT: %impl.elem0.loc13_42.2: type = impl_witness_access constants.%L.lookup_impl_witness.2ad, element0 [symbolic_self = constants.%impl.elem0.c42]
|
|
// CHECK:STDOUT: %impl.elem0.subst.loc13_42.2: type = impl_witness_access_substituted %impl.elem0.loc13_42.2, %.loc13_36.5 [concrete = constants.%tuple.type.2d5]
|
|
// CHECK:STDOUT: %rewrite.loc13_45.2 = requirement_rewrite %impl.elem0.subst.loc13_42.2, %.loc13_58.5 [concrete]
|
|
// CHECK:STDOUT: %impl.elem0.loc13_64.2: type = impl_witness_access constants.%L.lookup_impl_witness.2ad, element0 [symbolic_self = constants.%impl.elem0.c42]
|
|
// CHECK:STDOUT: %impl.elem0.subst.loc13_64.2: type = impl_witness_access_substituted %impl.elem0.loc13_64.2, %.loc13_36.5 [concrete = constants.%tuple.type.2d5]
|
|
// CHECK:STDOUT: %rewrite.loc13_67.2 = requirement_rewrite %impl.elem0.subst.loc13_64.2, %.loc13_80.5 [concrete]
|
|
// CHECK:STDOUT: %impl.elem0.loc13_86.2: type = impl_witness_access constants.%L.lookup_impl_witness.2ad, element0 [symbolic_self = constants.%impl.elem0.c42]
|
|
// CHECK:STDOUT: %impl.elem0.subst.loc13_86.2: type = impl_witness_access_substituted %impl.elem0.loc13_86.2, %.loc13_36.5 [concrete = constants.%tuple.type.2d5]
|
|
// CHECK:STDOUT: %rewrite.loc13_89.2 = requirement_rewrite %impl.elem0.subst.loc13_86.2, %.loc13_102.5 [concrete]
|
|
// CHECK:STDOUT: %.loc13_14: type = where_expr [concrete = <error>] {
|
|
// CHECK:STDOUT: %base_facet_type = requirement_base_facet_type %L.ref [concrete]
|
|
// CHECK:STDOUT: %rewrite.loc13_23.2 = requirement_rewrite %impl.elem0.loc13_20.2, %.loc13_36.5 [concrete]
|
|
// CHECK:STDOUT: %rewrite.loc13_45.2 = requirement_rewrite %impl.elem0.subst.loc13_42.2, %.loc13_58.5 [concrete]
|
|
// CHECK:STDOUT: %rewrite.loc13_67.2 = requirement_rewrite %impl.elem0.subst.loc13_64.2, %.loc13_80.5 [concrete]
|
|
// CHECK:STDOUT: %rewrite.loc13_89.2 = requirement_rewrite %impl.elem0.subst.loc13_86.2, %.loc13_102.5 [concrete]
|
|
// CHECK:STDOUT: }
|
|
// CHECK:STDOUT: }
|
|
// CHECK:STDOUT: }
|
|
// CHECK:STDOUT:
|
|
// CHECK:STDOUT: impl @empty_tuple.type.as.<error>.impl: %.loc13_7.2 as <error> {
|
|
// CHECK:STDOUT: !members:
|
|
// CHECK:STDOUT: extend <error>
|
|
// CHECK:STDOUT: witness = <error>
|
|
// CHECK:STDOUT: }
|
|
// CHECK:STDOUT:
|
|
// CHECK:STDOUT: --- fail_cycle.carbon
|
|
// CHECK:STDOUT:
|
|
// CHECK:STDOUT: constants {
|
|
// CHECK:STDOUT: %M.type: type = facet_type <@M> [concrete]
|
|
// CHECK:STDOUT: %M.assoc_type: type = assoc_entity_type @M [concrete]
|
|
// CHECK:STDOUT: %assoc0: %M.assoc_type = assoc_entity element0, @M.WithSelf.%X [concrete]
|
|
// CHECK:STDOUT: %assoc1: %M.assoc_type = assoc_entity element1, @M.WithSelf.%Y [concrete]
|
|
// CHECK:STDOUT: %assoc2: %M.assoc_type = assoc_entity element2, @M.WithSelf.%Z [concrete]
|
|
// CHECK:STDOUT: %empty_tuple.type: type = tuple_type () [concrete]
|
|
// CHECK:STDOUT: %empty_tuple: %empty_tuple.type = tuple_value () [concrete]
|
|
// CHECK:STDOUT: %.Self.frozen: %M.type = symbolic_binding .Self [symbolic_self]
|
|
// CHECK:STDOUT: %.Self.frozen.as_type: type = facet_access_type %.Self.frozen [symbolic_self]
|
|
// CHECK:STDOUT: %M.lookup_impl_witness.beb: <witness> = lookup_impl_witness %.Self.frozen, @M [symbolic_self]
|
|
// CHECK:STDOUT: %impl.elem0.352: type = impl_witness_access %M.lookup_impl_witness.beb, element0 [symbolic_self]
|
|
// CHECK:STDOUT: %impl.elem1.66c: type = impl_witness_access %M.lookup_impl_witness.beb, element1 [symbolic_self]
|
|
// CHECK:STDOUT: %impl.elem2.c22: type = impl_witness_access %M.lookup_impl_witness.beb, element2 [symbolic_self]
|
|
// CHECK:STDOUT: %.Self: %M.type = symbolic_binding .Self [symbolic_self]
|
|
// CHECK:STDOUT: %M.lookup_impl_witness.e09: <witness> = lookup_impl_witness %.Self, @M [symbolic_self]
|
|
// CHECK:STDOUT: %impl.elem0.c24: type = impl_witness_access %M.lookup_impl_witness.e09, element0 [symbolic_self]
|
|
// CHECK:STDOUT: %impl.elem1.e3e: type = impl_witness_access %M.lookup_impl_witness.e09, element1 [symbolic_self]
|
|
// CHECK:STDOUT: %impl.elem2.017: type = impl_witness_access %M.lookup_impl_witness.e09, element2 [symbolic_self]
|
|
// CHECK:STDOUT: }
|
|
// CHECK:STDOUT:
|
|
// CHECK:STDOUT: file {
|
|
// CHECK:STDOUT: impl_decl @empty_tuple.type.as.<error>.impl [concrete] {} {
|
|
// CHECK:STDOUT: %.loc13_7.1: %empty_tuple.type = tuple_literal () [concrete = constants.%empty_tuple]
|
|
// CHECK:STDOUT: %.loc13_7.2: type = converted %.loc13_7.1, constants.%empty_tuple.type [concrete = constants.%empty_tuple.type]
|
|
// CHECK:STDOUT: %M.ref: type = name_ref M, file.%M.decl [concrete = constants.%M.type]
|
|
// CHECK:STDOUT: %.Self.frozen: %M.type = symbolic_binding .Self [symbolic_self = constants.%.Self.frozen]
|
|
// CHECK:STDOUT: %base_facet_type = requirement_base_facet_type %M.ref [concrete]
|
|
// CHECK:STDOUT: %.Self.ref.loc13_20: %M.type = name_ref .Self, %.Self.frozen [symbolic_self = constants.%.Self.frozen]
|
|
// CHECK:STDOUT: %.Self.as_type.loc13_20: type = facet_access_type %.Self.ref.loc13_20 [symbolic_self = constants.%.Self.frozen.as_type]
|
|
// CHECK:STDOUT: %.loc13_20: type = converted %.Self.ref.loc13_20, %.Self.as_type.loc13_20 [symbolic_self = constants.%.Self.frozen.as_type]
|
|
// CHECK:STDOUT: %X.ref.loc13_20: %M.assoc_type = name_ref X, @X.%assoc0 [concrete = constants.%assoc0]
|
|
// CHECK:STDOUT: %impl.elem0.loc13_20.1: type = impl_witness_access constants.%M.lookup_impl_witness.beb, element0 [symbolic_self = constants.%impl.elem0.352]
|
|
// CHECK:STDOUT: %.Self.ref.loc13_25: %M.type = name_ref .Self, %.Self.frozen [symbolic_self = constants.%.Self.frozen]
|
|
// CHECK:STDOUT: %.Self.as_type.loc13_25: type = facet_access_type %.Self.ref.loc13_25 [symbolic_self = constants.%.Self.frozen.as_type]
|
|
// CHECK:STDOUT: %.loc13_25: type = converted %.Self.ref.loc13_25, %.Self.as_type.loc13_25 [symbolic_self = constants.%.Self.frozen.as_type]
|
|
// CHECK:STDOUT: %Y.ref.loc13_25: %M.assoc_type = name_ref Y, @Y.%assoc1 [concrete = constants.%assoc1]
|
|
// CHECK:STDOUT: %impl.elem1.loc13_25.1: type = impl_witness_access constants.%M.lookup_impl_witness.beb, element1 [symbolic_self = constants.%impl.elem1.66c]
|
|
// CHECK:STDOUT: %rewrite.loc13_23.1 = requirement_rewrite %impl.elem0.loc13_20.1, %impl.elem1.loc13_25.1 [concrete]
|
|
// CHECK:STDOUT: %.Self.ref.loc13_32: %M.type = name_ref .Self, %.Self.frozen [symbolic_self = constants.%.Self.frozen]
|
|
// CHECK:STDOUT: %.Self.as_type.loc13_32: type = facet_access_type %.Self.ref.loc13_32 [symbolic_self = constants.%.Self.frozen.as_type]
|
|
// CHECK:STDOUT: %.loc13_32: type = converted %.Self.ref.loc13_32, %.Self.as_type.loc13_32 [symbolic_self = constants.%.Self.frozen.as_type]
|
|
// CHECK:STDOUT: %Y.ref.loc13_32: %M.assoc_type = name_ref Y, @Y.%assoc1 [concrete = constants.%assoc1]
|
|
// CHECK:STDOUT: %impl.elem1.loc13_32.1: type = impl_witness_access constants.%M.lookup_impl_witness.beb, element1 [symbolic_self = constants.%impl.elem1.66c]
|
|
// CHECK:STDOUT: %.Self.ref.loc13_37: %M.type = name_ref .Self, %.Self.frozen [symbolic_self = constants.%.Self.frozen]
|
|
// CHECK:STDOUT: %.Self.as_type.loc13_37: type = facet_access_type %.Self.ref.loc13_37 [symbolic_self = constants.%.Self.frozen.as_type]
|
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// CHECK:STDOUT: %.loc13_37: type = converted %.Self.ref.loc13_37, %.Self.as_type.loc13_37 [symbolic_self = constants.%.Self.frozen.as_type]
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// CHECK:STDOUT: %X.ref.loc13_37: %M.assoc_type = name_ref X, @X.%assoc0 [concrete = constants.%assoc0]
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// CHECK:STDOUT: %impl.elem0.loc13_37.1: type = impl_witness_access constants.%M.lookup_impl_witness.beb, element0 [symbolic_self = constants.%impl.elem0.352]
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// CHECK:STDOUT: %impl.elem0.subst.loc13_37.1: type = impl_witness_access_substituted %impl.elem0.loc13_37.1, %impl.elem1.loc13_25.1 [symbolic_self = constants.%impl.elem1.66c]
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// CHECK:STDOUT: %rewrite.loc13_35.1 = requirement_rewrite %impl.elem1.loc13_32.1, %impl.elem0.subst.loc13_37.1 [concrete]
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// CHECK:STDOUT: %.Self.ref.loc13_44: %M.type = name_ref .Self, %.Self.frozen [symbolic_self = constants.%.Self.frozen]
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// CHECK:STDOUT: %.Self.as_type.loc13_44: type = facet_access_type %.Self.ref.loc13_44 [symbolic_self = constants.%.Self.frozen.as_type]
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// CHECK:STDOUT: %.loc13_44: type = converted %.Self.ref.loc13_44, %.Self.as_type.loc13_44 [symbolic_self = constants.%.Self.frozen.as_type]
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// CHECK:STDOUT: %Z.ref: %M.assoc_type = name_ref Z, @Z.%assoc2 [concrete = constants.%assoc2]
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// CHECK:STDOUT: %impl.elem2.loc13_44.1: type = impl_witness_access constants.%M.lookup_impl_witness.beb, element2 [symbolic_self = constants.%impl.elem2.c22]
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// CHECK:STDOUT: %.loc13_50.1: %empty_tuple.type = tuple_literal () [concrete = constants.%empty_tuple]
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// CHECK:STDOUT: %.loc13_50.2: type = converted %.loc13_50.1, constants.%empty_tuple.type [concrete = constants.%empty_tuple.type]
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// CHECK:STDOUT: %rewrite.loc13_47.1 = requirement_rewrite %impl.elem2.loc13_44.1, %.loc13_50.2 [concrete]
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// CHECK:STDOUT: %impl.elem0.loc13_20.2: type = impl_witness_access constants.%M.lookup_impl_witness.e09, element0 [symbolic_self = constants.%impl.elem0.c24]
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// CHECK:STDOUT: %impl.elem1.loc13_25.2: type = impl_witness_access constants.%M.lookup_impl_witness.e09, element1 [symbolic_self = constants.%impl.elem1.e3e]
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// CHECK:STDOUT: %rewrite.loc13_23.2 = requirement_rewrite %impl.elem0.loc13_20.2, %impl.elem1.loc13_25.2 [concrete]
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// CHECK:STDOUT: %impl.elem1.loc13_32.2: type = impl_witness_access constants.%M.lookup_impl_witness.e09, element1 [symbolic_self = constants.%impl.elem1.e3e]
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// CHECK:STDOUT: %impl.elem0.loc13_37.2: type = impl_witness_access constants.%M.lookup_impl_witness.e09, element0 [symbolic_self = constants.%impl.elem0.c24]
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// CHECK:STDOUT: %impl.elem1.loc13_25.3: type = impl_witness_access constants.%M.lookup_impl_witness.e09, element1 [symbolic_self = constants.%impl.elem1.e3e]
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// CHECK:STDOUT: %impl.elem0.subst.loc13_37.2: type = impl_witness_access_substituted %impl.elem0.loc13_37.2, %impl.elem1.loc13_25.3 [symbolic_self = constants.%impl.elem1.e3e]
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// CHECK:STDOUT: %rewrite.loc13_35.2 = requirement_rewrite %impl.elem1.loc13_32.2, %impl.elem0.subst.loc13_37.2 [concrete]
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// CHECK:STDOUT: %impl.elem2.loc13_44.2: type = impl_witness_access constants.%M.lookup_impl_witness.e09, element2 [symbolic_self = constants.%impl.elem2.017]
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// CHECK:STDOUT: %rewrite.loc13_47.2 = requirement_rewrite %impl.elem2.loc13_44.2, %.loc13_50.2 [concrete]
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// CHECK:STDOUT: %.loc13_14: type = where_expr [concrete = <error>] {
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// CHECK:STDOUT: %base_facet_type = requirement_base_facet_type %M.ref [concrete]
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// CHECK:STDOUT: %rewrite.loc13_23.2 = requirement_rewrite %impl.elem0.loc13_20.2, %impl.elem1.loc13_25.2 [concrete]
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// CHECK:STDOUT: %rewrite.loc13_35.2 = requirement_rewrite %impl.elem1.loc13_32.2, %impl.elem0.subst.loc13_37.2 [concrete]
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// CHECK:STDOUT: %rewrite.loc13_47.2 = requirement_rewrite %impl.elem2.loc13_44.2, %.loc13_50.2 [concrete]
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// CHECK:STDOUT: }
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// CHECK:STDOUT: }
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: impl @empty_tuple.type.as.<error>.impl: %.loc13_7.2 as <error> {
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// CHECK:STDOUT: !members:
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// CHECK:STDOUT: extend <error>
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// CHECK:STDOUT: witness = <error>
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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