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Resolve cycles in .Self replacement in nested designators (#7183)

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A nested designator like `.(X.X1).(Y.Y1)` results in nested
ImplWitnessAccess instructions, which can produce cycles in the
toolchain easily when replacing `.Self`.

First, when constructing a facet type like `V:! Z where .Z1 impls (Y
where .Y1 = U)` we substitute replace `.Self` in the nested facet type,
and in this case we replace `.Self` with `.Z1` which contains a `.Self`
of its own. This was coming from us being lazy about replacing `.Self`
in an `impl as` declaration, such as `impl C as Z where .Z1 = .Self`.
The self type is known there, so we can more eagerly replace `.Self` as
we do in a `require impls` declaration. Then the replacement for `.Self`
never comes with a `.Self` that needs to also be replaced. Any resulting
`.Self` would always be the top-level one.

Second, when evaluating ImplWitnessAccess, we were replacing .Self in
the LHS of rewrite constraints, but the `.Self` may itself have a type
that contains rewrite constraints. If one of those rewrite constraints
has nested ImplWitnessAccess instructions, we evaluate the new
ImplWitnessAccess, which again finds rewrite constraints to replace
`.Self` in, and we repeat forever. For this one we just stop replacing
.Self in the LHS of rewrite constraints. Since they are always against
.Self, we can always look in the access facet's type for a value.

While fixing ImplWitness access, also correct the lookup to search
through the types of nested ImplWitnessAccess instructions to find a
rewrite value, since it may find it at any level up to the eventual
`.Self`.

---------

Co-authored-by: Richard Smith <richard@metafoo.co.uk>
This commit is contained in:
Dana Jansens
2026-05-13 16:11:20 +00:00
committed by GitHub
co-authored by Richard Smith
parent 798b177fc0
commit 6326bbdbe1
23 changed files with 820 additions and 534 deletions
Download Patch File Download Diff File Expand all files Collapse all files
toolchain/check/testdata/interop/cpp/operators/arithmetic_operators.carbon
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+14 -14
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@@ -345,10 +345,10 @@ fn TestUnaryOperators(a: Cpp.Int16, b: Cpp.Int32) {
// CHECK:STDOUT: %.97d: type = fn_type_with_self_type %AddWith.WithSelf.Op.type.82f, %AddWith.facet.570 [symbolic]
// CHECK:STDOUT: %impl.elem1.07a: %.97d = impl_witness_access %AddWith.lookup_impl_witness.3c7, element1 [symbolic]
// CHECK:STDOUT: %specific_impl_fn.dbc: <specific function> = specific_impl_function %impl.elem1.07a, @AddWith.WithSelf.Op(%U.as_type.2b8, %AddWith.facet.570) [symbolic]
// CHECK:STDOUT: %Destroy.lookup_impl_witness.d86: <witness> = lookup_impl_witness %Result, @Destroy [symbolic]
// CHECK:STDOUT: %Destroy.lookup_impl_witness: <witness> = lookup_impl_witness %Result, @Destroy [symbolic]
// CHECK:STDOUT: %Destroy.WithSelf.Op.type.cb2e47.2: type = fn_type @Destroy.WithSelf.Op, @Destroy.WithSelf(%Result) [symbolic]
// CHECK:STDOUT: %.d5f: type = fn_type_with_self_type %Destroy.WithSelf.Op.type.cb2e47.2, %Result [symbolic]
// CHECK:STDOUT: %impl.elem0.a6b: %.d5f = impl_witness_access %Destroy.lookup_impl_witness.d86, element0 [symbolic]
// CHECK:STDOUT: %impl.elem0.a6b: %.d5f = impl_witness_access %Destroy.lookup_impl_witness, element0 [symbolic]
// CHECK:STDOUT: %specific_impl_fn.761: <specific function> = specific_impl_function %impl.elem0.a6b, @Destroy.WithSelf.Op(%Result) [symbolic]
// CHECK:STDOUT: %SubWith.type.99c: type = facet_type <@SubWith.1, @SubWith.1(%Other)> [symbolic]
// CHECK:STDOUT: %Self.ddf: %SubWith.type.99c = symbolic_binding Self, 1 [symbolic]
@@ -1383,7 +1383,7 @@ fn TestUnaryOperators(a: Cpp.Int16, b: Cpp.Int32) {
// CHECK:STDOUT: %specific_impl_fn.loc126_5.3: <specific function> = specific_impl_function %impl.elem1.loc126_5.2, @AddWith.WithSelf.Op(%U.as_type.loc123_36.1, %AddWith.facet) [symbolic = %specific_impl_fn.loc126_5.3 (constants.%specific_impl_fn.dbc)]
// CHECK:STDOUT: %Destroy.WithSelf.Op.type: type = fn_type @Destroy.WithSelf.Op, @Destroy.WithSelf(%Result.loc121_9.1) [symbolic = %Destroy.WithSelf.Op.type (constants.%Destroy.WithSelf.Op.type.cb2e47.2)]
// CHECK:STDOUT: %.loc126_5.5: type = fn_type_with_self_type %Destroy.WithSelf.Op.type, %Result.loc121_9.1 [symbolic = %.loc126_5.5 (constants.%.d5f)]
// CHECK:STDOUT: %Destroy.lookup_impl_witness: <witness> = lookup_impl_witness %Result.loc121_9.1, @Destroy [symbolic = %Destroy.lookup_impl_witness (constants.%Destroy.lookup_impl_witness.d86)]
// CHECK:STDOUT: %Destroy.lookup_impl_witness: <witness> = lookup_impl_witness %Result.loc121_9.1, @Destroy [symbolic = %Destroy.lookup_impl_witness (constants.%Destroy.lookup_impl_witness)]
// CHECK:STDOUT: %impl.elem0.loc126_5.2: @AddWith.loc124.%.loc126_5.5 (%.d5f) = impl_witness_access %Destroy.lookup_impl_witness, element0 [symbolic = %impl.elem0.loc126_5.2 (constants.%impl.elem0.a6b)]
// CHECK:STDOUT: %specific_impl_fn.loc126_5.4: <specific function> = specific_impl_function %impl.elem0.loc126_5.2, @Destroy.WithSelf.Op(%Result.loc121_9.1) [symbolic = %specific_impl_fn.loc126_5.4 (constants.%specific_impl_fn.761)]
// CHECK:STDOUT:
@@ -1401,7 +1401,7 @@ fn TestUnaryOperators(a: Cpp.Int16, b: Cpp.Int32) {
// CHECK:STDOUT: %.loc126_5.2: ref @AddWith.loc124.%Result.as_type.loc123_54.1 (%Result.as_type) = temporary_storage
// CHECK:STDOUT: %AddWith.WithSelf.Op.call: init @AddWith.loc124.%Result.as_type.loc123_54.1 (%Result.as_type) to %.loc126_5.2 = call %bound_method.loc126_5.2(%x.ref, %y.ref)
// CHECK:STDOUT: %.loc126_5.3: ref @AddWith.loc124.%Result.as_type.loc123_54.1 (%Result.as_type) = temporary %.loc126_5.2, %AddWith.WithSelf.Op.call
// CHECK:STDOUT: %impl.elem0.loc126_5.1: @AddWith.loc124.%.loc126_5.5 (%.d5f) = impl_witness_access constants.%Destroy.lookup_impl_witness.d86, element0 [symbolic = %impl.elem0.loc126_5.2 (constants.%impl.elem0.a6b)]
// CHECK:STDOUT: %impl.elem0.loc126_5.1: @AddWith.loc124.%.loc126_5.5 (%.d5f) = impl_witness_access constants.%Destroy.lookup_impl_witness, element0 [symbolic = %impl.elem0.loc126_5.2 (constants.%impl.elem0.a6b)]
// CHECK:STDOUT: %bound_method.loc126_5.3: <bound method> = bound_method %.loc126_5.3, %impl.elem0.loc126_5.1
// CHECK:STDOUT: %specific_impl_fn.loc126_5.2: <specific function> = specific_impl_function %impl.elem0.loc126_5.1, @Destroy.WithSelf.Op(constants.%Result) [symbolic = %specific_impl_fn.loc126_5.4 (constants.%specific_impl_fn.761)]
// CHECK:STDOUT: %bound_method.loc126_5.4: <bound method> = bound_method %.loc126_5.3, %specific_impl_fn.loc126_5.2
@@ -1425,7 +1425,7 @@ fn TestUnaryOperators(a: Cpp.Int16, b: Cpp.Int32) {
// CHECK:STDOUT: %specific_impl_fn.loc137_5.3: <specific function> = specific_impl_function %impl.elem1.loc137_5.2, @SubWith.WithSelf.Op(%U.as_type.loc134_36.1, %SubWith.facet) [symbolic = %specific_impl_fn.loc137_5.3 (constants.%specific_impl_fn.0d3)]
// CHECK:STDOUT: %Destroy.WithSelf.Op.type: type = fn_type @Destroy.WithSelf.Op, @Destroy.WithSelf(%Result.loc132_9.1) [symbolic = %Destroy.WithSelf.Op.type (constants.%Destroy.WithSelf.Op.type.cb2e47.2)]
// CHECK:STDOUT: %.loc137_5.5: type = fn_type_with_self_type %Destroy.WithSelf.Op.type, %Result.loc132_9.1 [symbolic = %.loc137_5.5 (constants.%.d5f)]
// CHECK:STDOUT: %Destroy.lookup_impl_witness: <witness> = lookup_impl_witness %Result.loc132_9.1, @Destroy [symbolic = %Destroy.lookup_impl_witness (constants.%Destroy.lookup_impl_witness.d86)]
// CHECK:STDOUT: %Destroy.lookup_impl_witness: <witness> = lookup_impl_witness %Result.loc132_9.1, @Destroy [symbolic = %Destroy.lookup_impl_witness (constants.%Destroy.lookup_impl_witness)]
// CHECK:STDOUT: %impl.elem0.loc137_5.2: @SubWith.loc135.%.loc137_5.5 (%.d5f) = impl_witness_access %Destroy.lookup_impl_witness, element0 [symbolic = %impl.elem0.loc137_5.2 (constants.%impl.elem0.a6b)]
// CHECK:STDOUT: %specific_impl_fn.loc137_5.4: <specific function> = specific_impl_function %impl.elem0.loc137_5.2, @Destroy.WithSelf.Op(%Result.loc132_9.1) [symbolic = %specific_impl_fn.loc137_5.4 (constants.%specific_impl_fn.761)]
// CHECK:STDOUT:
@@ -1443,7 +1443,7 @@ fn TestUnaryOperators(a: Cpp.Int16, b: Cpp.Int32) {
// CHECK:STDOUT: %.loc137_5.2: ref @SubWith.loc135.%Result.as_type.loc134_54.1 (%Result.as_type) = temporary_storage
// CHECK:STDOUT: %SubWith.WithSelf.Op.call: init @SubWith.loc135.%Result.as_type.loc134_54.1 (%Result.as_type) to %.loc137_5.2 = call %bound_method.loc137_5.2(%x.ref, %y.ref)
// CHECK:STDOUT: %.loc137_5.3: ref @SubWith.loc135.%Result.as_type.loc134_54.1 (%Result.as_type) = temporary %.loc137_5.2, %SubWith.WithSelf.Op.call
// CHECK:STDOUT: %impl.elem0.loc137_5.1: @SubWith.loc135.%.loc137_5.5 (%.d5f) = impl_witness_access constants.%Destroy.lookup_impl_witness.d86, element0 [symbolic = %impl.elem0.loc137_5.2 (constants.%impl.elem0.a6b)]
// CHECK:STDOUT: %impl.elem0.loc137_5.1: @SubWith.loc135.%.loc137_5.5 (%.d5f) = impl_witness_access constants.%Destroy.lookup_impl_witness, element0 [symbolic = %impl.elem0.loc137_5.2 (constants.%impl.elem0.a6b)]
// CHECK:STDOUT: %bound_method.loc137_5.3: <bound method> = bound_method %.loc137_5.3, %impl.elem0.loc137_5.1
// CHECK:STDOUT: %specific_impl_fn.loc137_5.2: <specific function> = specific_impl_function %impl.elem0.loc137_5.1, @Destroy.WithSelf.Op(constants.%Result) [symbolic = %specific_impl_fn.loc137_5.4 (constants.%specific_impl_fn.761)]
// CHECK:STDOUT: %bound_method.loc137_5.4: <bound method> = bound_method %.loc137_5.3, %specific_impl_fn.loc137_5.2
@@ -1467,7 +1467,7 @@ fn TestUnaryOperators(a: Cpp.Int16, b: Cpp.Int32) {
// CHECK:STDOUT: %specific_impl_fn.loc148_5.3: <specific function> = specific_impl_function %impl.elem1.loc148_5.2, @MulWith.WithSelf.Op(%U.as_type.loc145_36.1, %MulWith.facet) [symbolic = %specific_impl_fn.loc148_5.3 (constants.%specific_impl_fn.889)]
// CHECK:STDOUT: %Destroy.WithSelf.Op.type: type = fn_type @Destroy.WithSelf.Op, @Destroy.WithSelf(%Result.loc143_9.1) [symbolic = %Destroy.WithSelf.Op.type (constants.%Destroy.WithSelf.Op.type.cb2e47.2)]
// CHECK:STDOUT: %.loc148_5.5: type = fn_type_with_self_type %Destroy.WithSelf.Op.type, %Result.loc143_9.1 [symbolic = %.loc148_5.5 (constants.%.d5f)]
// CHECK:STDOUT: %Destroy.lookup_impl_witness: <witness> = lookup_impl_witness %Result.loc143_9.1, @Destroy [symbolic = %Destroy.lookup_impl_witness (constants.%Destroy.lookup_impl_witness.d86)]
// CHECK:STDOUT: %Destroy.lookup_impl_witness: <witness> = lookup_impl_witness %Result.loc143_9.1, @Destroy [symbolic = %Destroy.lookup_impl_witness (constants.%Destroy.lookup_impl_witness)]
// CHECK:STDOUT: %impl.elem0.loc148_5.2: @MulWith.loc146.%.loc148_5.5 (%.d5f) = impl_witness_access %Destroy.lookup_impl_witness, element0 [symbolic = %impl.elem0.loc148_5.2 (constants.%impl.elem0.a6b)]
// CHECK:STDOUT: %specific_impl_fn.loc148_5.4: <specific function> = specific_impl_function %impl.elem0.loc148_5.2, @Destroy.WithSelf.Op(%Result.loc143_9.1) [symbolic = %specific_impl_fn.loc148_5.4 (constants.%specific_impl_fn.761)]
// CHECK:STDOUT:
@@ -1485,7 +1485,7 @@ fn TestUnaryOperators(a: Cpp.Int16, b: Cpp.Int32) {
// CHECK:STDOUT: %.loc148_5.2: ref @MulWith.loc146.%Result.as_type.loc145_54.1 (%Result.as_type) = temporary_storage
// CHECK:STDOUT: %MulWith.WithSelf.Op.call: init @MulWith.loc146.%Result.as_type.loc145_54.1 (%Result.as_type) to %.loc148_5.2 = call %bound_method.loc148_5.2(%x.ref, %y.ref)
// CHECK:STDOUT: %.loc148_5.3: ref @MulWith.loc146.%Result.as_type.loc145_54.1 (%Result.as_type) = temporary %.loc148_5.2, %MulWith.WithSelf.Op.call
// CHECK:STDOUT: %impl.elem0.loc148_5.1: @MulWith.loc146.%.loc148_5.5 (%.d5f) = impl_witness_access constants.%Destroy.lookup_impl_witness.d86, element0 [symbolic = %impl.elem0.loc148_5.2 (constants.%impl.elem0.a6b)]
// CHECK:STDOUT: %impl.elem0.loc148_5.1: @MulWith.loc146.%.loc148_5.5 (%.d5f) = impl_witness_access constants.%Destroy.lookup_impl_witness, element0 [symbolic = %impl.elem0.loc148_5.2 (constants.%impl.elem0.a6b)]
// CHECK:STDOUT: %bound_method.loc148_5.3: <bound method> = bound_method %.loc148_5.3, %impl.elem0.loc148_5.1
// CHECK:STDOUT: %specific_impl_fn.loc148_5.2: <specific function> = specific_impl_function %impl.elem0.loc148_5.1, @Destroy.WithSelf.Op(constants.%Result) [symbolic = %specific_impl_fn.loc148_5.4 (constants.%specific_impl_fn.761)]
// CHECK:STDOUT: %bound_method.loc148_5.4: <bound method> = bound_method %.loc148_5.3, %specific_impl_fn.loc148_5.2
@@ -1509,7 +1509,7 @@ fn TestUnaryOperators(a: Cpp.Int16, b: Cpp.Int32) {
// CHECK:STDOUT: %specific_impl_fn.loc159_5.3: <specific function> = specific_impl_function %impl.elem1.loc159_5.2, @DivWith.WithSelf.Op(%U.as_type.loc156_36.1, %DivWith.facet) [symbolic = %specific_impl_fn.loc159_5.3 (constants.%specific_impl_fn.dbd)]
// CHECK:STDOUT: %Destroy.WithSelf.Op.type: type = fn_type @Destroy.WithSelf.Op, @Destroy.WithSelf(%Result.loc154_9.1) [symbolic = %Destroy.WithSelf.Op.type (constants.%Destroy.WithSelf.Op.type.cb2e47.2)]
// CHECK:STDOUT: %.loc159_5.5: type = fn_type_with_self_type %Destroy.WithSelf.Op.type, %Result.loc154_9.1 [symbolic = %.loc159_5.5 (constants.%.d5f)]
// CHECK:STDOUT: %Destroy.lookup_impl_witness: <witness> = lookup_impl_witness %Result.loc154_9.1, @Destroy [symbolic = %Destroy.lookup_impl_witness (constants.%Destroy.lookup_impl_witness.d86)]
// CHECK:STDOUT: %Destroy.lookup_impl_witness: <witness> = lookup_impl_witness %Result.loc154_9.1, @Destroy [symbolic = %Destroy.lookup_impl_witness (constants.%Destroy.lookup_impl_witness)]
// CHECK:STDOUT: %impl.elem0.loc159_5.2: @DivWith.loc157.%.loc159_5.5 (%.d5f) = impl_witness_access %Destroy.lookup_impl_witness, element0 [symbolic = %impl.elem0.loc159_5.2 (constants.%impl.elem0.a6b)]
// CHECK:STDOUT: %specific_impl_fn.loc159_5.4: <specific function> = specific_impl_function %impl.elem0.loc159_5.2, @Destroy.WithSelf.Op(%Result.loc154_9.1) [symbolic = %specific_impl_fn.loc159_5.4 (constants.%specific_impl_fn.761)]
// CHECK:STDOUT:
@@ -1527,7 +1527,7 @@ fn TestUnaryOperators(a: Cpp.Int16, b: Cpp.Int32) {
// CHECK:STDOUT: %.loc159_5.2: ref @DivWith.loc157.%Result.as_type.loc156_54.1 (%Result.as_type) = temporary_storage
// CHECK:STDOUT: %DivWith.WithSelf.Op.call: init @DivWith.loc157.%Result.as_type.loc156_54.1 (%Result.as_type) to %.loc159_5.2 = call %bound_method.loc159_5.2(%x.ref, %y.ref)
// CHECK:STDOUT: %.loc159_5.3: ref @DivWith.loc157.%Result.as_type.loc156_54.1 (%Result.as_type) = temporary %.loc159_5.2, %DivWith.WithSelf.Op.call
// CHECK:STDOUT: %impl.elem0.loc159_5.1: @DivWith.loc157.%.loc159_5.5 (%.d5f) = impl_witness_access constants.%Destroy.lookup_impl_witness.d86, element0 [symbolic = %impl.elem0.loc159_5.2 (constants.%impl.elem0.a6b)]
// CHECK:STDOUT: %impl.elem0.loc159_5.1: @DivWith.loc157.%.loc159_5.5 (%.d5f) = impl_witness_access constants.%Destroy.lookup_impl_witness, element0 [symbolic = %impl.elem0.loc159_5.2 (constants.%impl.elem0.a6b)]
// CHECK:STDOUT: %bound_method.loc159_5.3: <bound method> = bound_method %.loc159_5.3, %impl.elem0.loc159_5.1
// CHECK:STDOUT: %specific_impl_fn.loc159_5.2: <specific function> = specific_impl_function %impl.elem0.loc159_5.1, @Destroy.WithSelf.Op(constants.%Result) [symbolic = %specific_impl_fn.loc159_5.4 (constants.%specific_impl_fn.761)]
// CHECK:STDOUT: %bound_method.loc159_5.4: <bound method> = bound_method %.loc159_5.3, %specific_impl_fn.loc159_5.2
@@ -1551,7 +1551,7 @@ fn TestUnaryOperators(a: Cpp.Int16, b: Cpp.Int32) {
// CHECK:STDOUT: %specific_impl_fn.loc170_5.3: <specific function> = specific_impl_function %impl.elem1.loc170_5.2, @ModWith.WithSelf.Op(%U.as_type.loc167_36.1, %ModWith.facet) [symbolic = %specific_impl_fn.loc170_5.3 (constants.%specific_impl_fn.772)]
// CHECK:STDOUT: %Destroy.WithSelf.Op.type: type = fn_type @Destroy.WithSelf.Op, @Destroy.WithSelf(%Result.loc165_9.1) [symbolic = %Destroy.WithSelf.Op.type (constants.%Destroy.WithSelf.Op.type.cb2e47.2)]
// CHECK:STDOUT: %.loc170_5.5: type = fn_type_with_self_type %Destroy.WithSelf.Op.type, %Result.loc165_9.1 [symbolic = %.loc170_5.5 (constants.%.d5f)]
// CHECK:STDOUT: %Destroy.lookup_impl_witness: <witness> = lookup_impl_witness %Result.loc165_9.1, @Destroy [symbolic = %Destroy.lookup_impl_witness (constants.%Destroy.lookup_impl_witness.d86)]
// CHECK:STDOUT: %Destroy.lookup_impl_witness: <witness> = lookup_impl_witness %Result.loc165_9.1, @Destroy [symbolic = %Destroy.lookup_impl_witness (constants.%Destroy.lookup_impl_witness)]
// CHECK:STDOUT: %impl.elem0.loc170_5.2: @ModWith.loc168.%.loc170_5.5 (%.d5f) = impl_witness_access %Destroy.lookup_impl_witness, element0 [symbolic = %impl.elem0.loc170_5.2 (constants.%impl.elem0.a6b)]
// CHECK:STDOUT: %specific_impl_fn.loc170_5.4: <specific function> = specific_impl_function %impl.elem0.loc170_5.2, @Destroy.WithSelf.Op(%Result.loc165_9.1) [symbolic = %specific_impl_fn.loc170_5.4 (constants.%specific_impl_fn.761)]
// CHECK:STDOUT:
@@ -1569,7 +1569,7 @@ fn TestUnaryOperators(a: Cpp.Int16, b: Cpp.Int32) {
// CHECK:STDOUT: %.loc170_5.2: ref @ModWith.loc168.%Result.as_type.loc167_54.1 (%Result.as_type) = temporary_storage
// CHECK:STDOUT: %ModWith.WithSelf.Op.call: init @ModWith.loc168.%Result.as_type.loc167_54.1 (%Result.as_type) to %.loc170_5.2 = call %bound_method.loc170_5.2(%x.ref, %y.ref)
// CHECK:STDOUT: %.loc170_5.3: ref @ModWith.loc168.%Result.as_type.loc167_54.1 (%Result.as_type) = temporary %.loc170_5.2, %ModWith.WithSelf.Op.call
// CHECK:STDOUT: %impl.elem0.loc170_5.1: @ModWith.loc168.%.loc170_5.5 (%.d5f) = impl_witness_access constants.%Destroy.lookup_impl_witness.d86, element0 [symbolic = %impl.elem0.loc170_5.2 (constants.%impl.elem0.a6b)]
// CHECK:STDOUT: %impl.elem0.loc170_5.1: @ModWith.loc168.%.loc170_5.5 (%.d5f) = impl_witness_access constants.%Destroy.lookup_impl_witness, element0 [symbolic = %impl.elem0.loc170_5.2 (constants.%impl.elem0.a6b)]
// CHECK:STDOUT: %bound_method.loc170_5.3: <bound method> = bound_method %.loc170_5.3, %impl.elem0.loc170_5.1
// CHECK:STDOUT: %specific_impl_fn.loc170_5.2: <specific function> = specific_impl_function %impl.elem0.loc170_5.1, @Destroy.WithSelf.Op(constants.%Result) [symbolic = %specific_impl_fn.loc170_5.4 (constants.%specific_impl_fn.761)]
// CHECK:STDOUT: %bound_method.loc170_5.4: <bound method> = bound_method %.loc170_5.3, %specific_impl_fn.loc170_5.2
@@ -1787,7 +1787,7 @@ fn TestUnaryOperators(a: Cpp.Int16, b: Cpp.Int32) {
// CHECK:STDOUT: %specific_impl_fn.loc296_3.3: <specific function> = specific_impl_function %impl.elem1.loc296_3.2, @Negate.WithSelf.Op(%Negate.facet) [symbolic = %specific_impl_fn.loc296_3.3 (constants.%specific_impl_fn.f22)]
// CHECK:STDOUT: %Destroy.WithSelf.Op.type: type = fn_type @Destroy.WithSelf.Op, @Destroy.WithSelf(%Result.loc292_9.1) [symbolic = %Destroy.WithSelf.Op.type (constants.%Destroy.WithSelf.Op.type.cb2e47.2)]
// CHECK:STDOUT: %.loc296_3.4: type = fn_type_with_self_type %Destroy.WithSelf.Op.type, %Result.loc292_9.1 [symbolic = %.loc296_3.4 (constants.%.d5f)]
// CHECK:STDOUT: %Destroy.lookup_impl_witness: <witness> = lookup_impl_witness %Result.loc292_9.1, @Destroy [symbolic = %Destroy.lookup_impl_witness (constants.%Destroy.lookup_impl_witness.d86)]
// CHECK:STDOUT: %Destroy.lookup_impl_witness: <witness> = lookup_impl_witness %Result.loc292_9.1, @Destroy [symbolic = %Destroy.lookup_impl_witness (constants.%Destroy.lookup_impl_witness)]
// CHECK:STDOUT: %impl.elem0.loc296_3.2: @TestNegate.%.loc296_3.4 (%.d5f) = impl_witness_access %Destroy.lookup_impl_witness, element0 [symbolic = %impl.elem0.loc296_3.2 (constants.%impl.elem0.a6b)]
// CHECK:STDOUT: %specific_impl_fn.loc296_3.4: <specific function> = specific_impl_function %impl.elem0.loc296_3.2, @Destroy.WithSelf.Op(%Result.loc292_9.1) [symbolic = %specific_impl_fn.loc296_3.4 (constants.%specific_impl_fn.761)]
// CHECK:STDOUT:
@@ -1801,7 +1801,7 @@ fn TestUnaryOperators(a: Cpp.Int16, b: Cpp.Int32) {
// CHECK:STDOUT: %.loc296_3.1: ref @TestNegate.%Result.as_type.loc293_50.1 (%Result.as_type) = temporary_storage
// CHECK:STDOUT: %Negate.WithSelf.Op.call: init @TestNegate.%Result.as_type.loc293_50.1 (%Result.as_type) to %.loc296_3.1 = call %bound_method.loc296_3.2(%x.ref)
// CHECK:STDOUT: %.loc296_3.2: ref @TestNegate.%Result.as_type.loc293_50.1 (%Result.as_type) = temporary %.loc296_3.1, %Negate.WithSelf.Op.call
// CHECK:STDOUT: %impl.elem0.loc296_3.1: @TestNegate.%.loc296_3.4 (%.d5f) = impl_witness_access constants.%Destroy.lookup_impl_witness.d86, element0 [symbolic = %impl.elem0.loc296_3.2 (constants.%impl.elem0.a6b)]
// CHECK:STDOUT: %impl.elem0.loc296_3.1: @TestNegate.%.loc296_3.4 (%.d5f) = impl_witness_access constants.%Destroy.lookup_impl_witness, element0 [symbolic = %impl.elem0.loc296_3.2 (constants.%impl.elem0.a6b)]
// CHECK:STDOUT: %bound_method.loc296_3.3: <bound method> = bound_method %.loc296_3.2, %impl.elem0.loc296_3.1
// CHECK:STDOUT: %specific_impl_fn.loc296_3.2: <specific function> = specific_impl_function %impl.elem0.loc296_3.1, @Destroy.WithSelf.Op(constants.%Result) [symbolic = %specific_impl_fn.loc296_3.4 (constants.%specific_impl_fn.761)]
// CHECK:STDOUT: %bound_method.loc296_3.4: <bound method> = bound_method %.loc296_3.2, %specific_impl_fn.loc296_3.2