C++ interop: Add `Cpp.<builtin_type>` (#6047)

Based on proposal #5448.

Defining all `Cpp.<builtin_type>` names.
Still unsupported types on LP64: `long long`, `unsigned long long` and
`long double`.
Still unsupported types on LLP64: `long`, `unsigned long` and `long
double`.

C++ Interop Demo (on LP64):

```c++
// half.h

auto Half(long x) -> float;
auto PrintLong(long x) -> void;
auto PrintFloat(float x) -> void;
```

```c++
// half.cpp

#include <cstdio>

auto Half(long x) -> float {
  return static_cast<float>(x) / 2;
}

auto PrintLong(long x) -> void {
  printf("%ld\n", x);
}

auto PrintFloat(float x) -> void {
  printf("%f\n", x);
}
```

```carbon
// main.carbon

library "Main";

import Cpp library "half.h";

fn Run() -> i32 {
  let x: Cpp.long = 5;
  Cpp.PrintLong(x);
  let y: Cpp.float = Cpp.Half(x);
  Cpp.PrintFloat(y);
  return 0;
}
```

```shell
$ clang -c half.cpp
$ bazel-bin/toolchain/carbon compile main.carbon
$ bazel-bin/toolchain/carbon link half.o main.o --output=demo
$ ./demo
5
2.500000
```

Part of #5263.

toolchain/check/import_cpp.cpp

@@ -1970,6 +1970,61 @@ static auto ImportNameDeclIntoScope(Context& context, SemIR::LocId loc_id,
                                                            access_kind);
 }
 
+// Returns true if the scope is the top `Cpp` scope.
+static auto IsTopCppScope(Context& context, SemIR::NameScopeId scope_id)
+    -> bool {
+  const SemIR::NameScope& name_scope = context.name_scopes().Get(scope_id);
+  CARBON_CHECK(name_scope.is_cpp_scope());
+  return name_scope.parent_scope_id() == SemIR::NameScopeId::Package;
+}
+
+// For builtin names like `Cpp.long`, return the associated types.
+static auto LookupBuiltInTypes(Context& context, SemIR::LocId loc_id,
+                               SemIR::NameScopeId scope_id,
+                               SemIR::NameId name_id) -> SemIR::InstId {
+  if (!IsTopCppScope(context, scope_id)) {
+    return SemIR::InstId::None;
+  }
+
+  auto name = context.names().GetAsStringIfIdentifier(name_id);
+  if (!name) {
+    return SemIR::InstId::None;
+  }
+
+  const clang::ASTContext& ast_context = context.ast_context();
+
+  // List of types based on
+  // https://github.com/carbon-language/carbon-lang/blob/trunk/proposals/p5448.md#details
+  auto builtin_type =
+      llvm::StringSwitch<clang::QualType>(*name)
+          .Case("signed_char", ast_context.SignedCharTy)
+          .Case("short", ast_context.ShortTy)
+          .Case("int", ast_context.IntTy)
+          .Case("long", ast_context.LongTy)
+          .Case("long_long", ast_context.LongLongTy)
+          .Case("unsigned_char", ast_context.UnsignedCharTy)
+          .Case("unsigned_short", ast_context.UnsignedShortTy)
+          .Case("unsigned_int", ast_context.UnsignedIntTy)
+          .Case("unsigned_long", ast_context.UnsignedLongTy)
+          .Case("unsigned_long_long", ast_context.UnsignedLongLongTy)
+          .Case("float", ast_context.FloatTy)
+          .Case("double", ast_context.DoubleTy)
+          .Case("long_double", ast_context.LongDoubleTy)
+          .Default(clang::QualType());
+  if (builtin_type.isNull()) {
+    return SemIR::InstId::None;
+  }
+
+  SemIR::InstId inst_id =
+      MapNonWrapperType(context, loc_id, builtin_type).inst_id;
+  if (!inst_id.has_value()) {
+    context.TODO(loc_id, llvm::formatv("Unsupported: builtin type: {0}",
+                                       builtin_type.getAsString()));
+    return SemIR::ErrorInst::InstId;
+  }
+  return inst_id;
+}
+
 // Imports an overloaded function set from Clang to Carbon.
 static auto ImportCppOverloadSet(Context& context, SemIR::NameScopeId scope_id,
                                  SemIR::NameId name_id,
@@ -2058,6 +2113,14 @@ auto ImportNameFromCpp(Context& context, SemIR::LocId loc_id,
 
   auto lookup = ClangLookupName(context, scope_id, name_id);
   if (!lookup) {
+    SemIR::InstId builtin_inst_id =
+        LookupBuiltInTypes(context, loc_id, scope_id, name_id);
+    if (builtin_inst_id.has_value()) {
+      AddNameToScope(context, scope_id, name_id, SemIR::AccessKind::Public,
+                     builtin_inst_id);
+      return SemIR::ScopeLookupResult::MakeWrappedLookupResult(
+          builtin_inst_id, SemIR::AccessKind::Public);
+    }
     return SemIR::ScopeLookupResult::MakeNotFound();
   }
 

toolchain/check/testdata/interop/cpp/builtins.carbon

@@ -0,0 +1,609 @@
+// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
+// Exceptions. See /LICENSE for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+// INCLUDE-FILE: toolchain/testing/testdata/min_prelude/primitives.carbon
+//
+// AUTOUPDATE
+// TIP: To test this file alone, run:
+// TIP:   bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/check/testdata/interop/cpp/builtins.carbon
+// TIP: To dump output, run:
+// TIP:   bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/interop/cpp/builtins.carbon
+
+// --- supported_types.carbon
+
+library "[[@TEST_NAME]]";
+
+import Cpp inline "";
+
+fn F() {
+  //@dump-sem-ir-begin
+  let cpp_signed_char : Cpp.signed_char = 1 as i8;
+  let carbon_signed_char: i8 = cpp_signed_char;
+
+  let cpp_short : Cpp.short = 1 as i16;
+  let carbon_short: i16 = cpp_short;
+
+  let cpp_int : Cpp.int = 1 as i32;
+  let carbon_int: i32 = cpp_int;
+
+  let cpp_unsigned_char : Cpp.unsigned_char = 1 as u8;
+  let carbon_unsigned_char: u8 = cpp_unsigned_char;
+
+  let cpp_unsigned_short : Cpp.unsigned_short = 1 as u16;
+  let carbon_unsigned_short: u16 = cpp_unsigned_short;
+
+  let cpp_unsigned_int : Cpp.unsigned_int = 1 as u32;
+  let carbon_unsigned_int: u32 = cpp_unsigned_int;
+
+  let cpp_float : Cpp.float = 1.0 as f32;
+  let carbon_float: f32 = cpp_float;
+
+  let cpp_double : Cpp.double = 1.0 as f64;
+  let carbon_double: f64 = cpp_double;
+  //@dump-sem-ir-end
+}
+
+// --- fail_todo_unsupported_types.carbon
+
+library "[[@TEST_NAME]]";
+
+import Cpp inline "";
+
+fn F() {
+  //@dump-sem-ir-begin
+  // CHECK:STDERR: fail_todo_unsupported_types.carbon:[[@LINE+7]]:25: error: semantics TODO: `Unsupported: builtin type: long double` [SemanticsTodo]
+  // CHECK:STDERR:   let cpp_long_double : Cpp.long_double = 1.0 as f64;
+  // CHECK:STDERR:                         ^~~~~~~~~~~~~~~
+  // CHECK:STDERR: fail_todo_unsupported_types.carbon:[[@LINE+4]]:25: note: in `Cpp` name lookup for `long_double` [InCppNameLookup]
+  // CHECK:STDERR:   let cpp_long_double : Cpp.long_double = 1.0 as f64;
+  // CHECK:STDERR:                         ^~~~~~~~~~~~~~~
+  // CHECK:STDERR:
+  let cpp_long_double : Cpp.long_double = 1.0 as f64;
+  let carbon_long_double: f64 = cpp_long_double;
+  //@dump-sem-ir-end
+}
+
+// --- fail_not_builtin.carbon
+
+library "[[@TEST_NAME]]";
+
+import Cpp inline "";
+
+fn F() {
+  // CHECK:STDERR: fail_not_builtin.carbon:[[@LINE+4]]:21: error: member name `not_builtin` not found in `Cpp` [MemberNameNotFoundInInstScope]
+  // CHECK:STDERR:   let not_builtin : Cpp.not_builtin = 1;
+  // CHECK:STDERR:                     ^~~~~~~~~~~~~~~
+  // CHECK:STDERR:
+  let not_builtin : Cpp.not_builtin = 1;
+}
+
+// --- fail_lookup_in_other_scopes.carbon
+
+library "[[@TEST_NAME]]";
+
+import Cpp inline '''
+namespace MyNamespace {}
+''';
+
+fn F() {
+  // CHECK:STDERR: fail_lookup_in_other_scopes.carbon:[[@LINE+4]]:14: error: member name `long` not found in `Cpp.MyNamespace` [MemberNameNotFoundInInstScope]
+  // CHECK:STDERR:   let long : Cpp.MyNamespace.long = 1;
+  // CHECK:STDERR:              ^~~~~~~~~~~~~~~~~~~~
+  // CHECK:STDERR:
+  let long : Cpp.MyNamespace.long = 1;
+}
+
+// --- override_builtin.carbon
+
+library "[[@TEST_NAME]]";
+
+import Cpp inline '''
+struct unsigned_int {
+  auto foo() -> unsigned int;
+};
+''';
+
+fn F() {
+  //@dump-sem-ir-begin
+  var unsigned_int : Cpp.unsigned_int;
+  let x: u32 = unsigned_int.foo();
+  //@dump-sem-ir-end
+}
+
+// CHECK:STDOUT: --- supported_types.carbon
+// CHECK:STDOUT:
+// CHECK:STDOUT: constants {
+// CHECK:STDOUT:   %int_8: Core.IntLiteral = int_value 8 [concrete]
+// CHECK:STDOUT:   %i8: type = class_type @Int, @Int(%int_8) [concrete]
+// CHECK:STDOUT:   %pattern_type.e3f: type = pattern_type %i8 [concrete]
+// CHECK:STDOUT:   %int_1.5b8: Core.IntLiteral = int_value 1 [concrete]
+// CHECK:STDOUT:   %As.type.7d7: type = facet_type <@As, @As(%i8)> [concrete]
+// CHECK:STDOUT:   %As.Convert.type.cc1: type = fn_type @As.Convert, @As(%i8) [concrete]
+// CHECK:STDOUT:   %To: Core.IntLiteral = bind_symbolic_name To, 0 [symbolic]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.type.565: type = fn_type @Core.IntLiteral.as.As.impl.Convert.1, @Core.IntLiteral.as.As.impl.dc4(%To) [symbolic]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.d2c: %Core.IntLiteral.as.As.impl.Convert.type.565 = struct_value () [symbolic]
+// CHECK:STDOUT:   %As.impl_witness.d74: <witness> = impl_witness imports.%As.impl_witness_table.5ad, @Core.IntLiteral.as.As.impl.dc4(%int_8) [concrete]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.type.83e: type = fn_type @Core.IntLiteral.as.As.impl.Convert.1, @Core.IntLiteral.as.As.impl.dc4(%int_8) [concrete]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.e8b: %Core.IntLiteral.as.As.impl.Convert.type.83e = struct_value () [concrete]
+// CHECK:STDOUT:   %As.facet.09b: %As.type.7d7 = facet_value Core.IntLiteral, (%As.impl_witness.d74) [concrete]
+// CHECK:STDOUT:   %.95e: type = fn_type_with_self_type %As.Convert.type.cc1, %As.facet.09b [concrete]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.bound.09b: <bound method> = bound_method %int_1.5b8, %Core.IntLiteral.as.As.impl.Convert.e8b [concrete]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.specific_fn.2e1: <specific function> = specific_function %Core.IntLiteral.as.As.impl.Convert.e8b, @Core.IntLiteral.as.As.impl.Convert.1(%int_8) [concrete]
+// CHECK:STDOUT:   %bound_method.967: <bound method> = bound_method %int_1.5b8, %Core.IntLiteral.as.As.impl.Convert.specific_fn.2e1 [concrete]
+// CHECK:STDOUT:   %int_1.30e: %i8 = int_value 1 [concrete]
+// CHECK:STDOUT:   %int_16: Core.IntLiteral = int_value 16 [concrete]
+// CHECK:STDOUT:   %i16: type = class_type @Int, @Int(%int_16) [concrete]
+// CHECK:STDOUT:   %pattern_type.2f8: type = pattern_type %i16 [concrete]
+// CHECK:STDOUT:   %As.type.771: type = facet_type <@As, @As(%i16)> [concrete]
+// CHECK:STDOUT:   %As.Convert.type.be5: type = fn_type @As.Convert, @As(%i16) [concrete]
+// CHECK:STDOUT:   %As.impl_witness.2d2: <witness> = impl_witness imports.%As.impl_witness_table.5ad, @Core.IntLiteral.as.As.impl.dc4(%int_16) [concrete]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.type.38a: type = fn_type @Core.IntLiteral.as.As.impl.Convert.1, @Core.IntLiteral.as.As.impl.dc4(%int_16) [concrete]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.97a: %Core.IntLiteral.as.As.impl.Convert.type.38a = struct_value () [concrete]
+// CHECK:STDOUT:   %As.facet.56b: %As.type.771 = facet_value Core.IntLiteral, (%As.impl_witness.2d2) [concrete]
+// CHECK:STDOUT:   %.026: type = fn_type_with_self_type %As.Convert.type.be5, %As.facet.56b [concrete]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.bound.3fb: <bound method> = bound_method %int_1.5b8, %Core.IntLiteral.as.As.impl.Convert.97a [concrete]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.specific_fn.613: <specific function> = specific_function %Core.IntLiteral.as.As.impl.Convert.97a, @Core.IntLiteral.as.As.impl.Convert.1(%int_16) [concrete]
+// CHECK:STDOUT:   %bound_method.7be: <bound method> = bound_method %int_1.5b8, %Core.IntLiteral.as.As.impl.Convert.specific_fn.613 [concrete]
+// CHECK:STDOUT:   %int_1.f90: %i16 = int_value 1 [concrete]
+// CHECK:STDOUT:   %int_32: Core.IntLiteral = int_value 32 [concrete]
+// CHECK:STDOUT:   %i32: type = class_type @Int, @Int(%int_32) [concrete]
+// CHECK:STDOUT:   %pattern_type.7ce: type = pattern_type %i32 [concrete]
+// CHECK:STDOUT:   %As.type.dbd: type = facet_type <@As, @As(%i32)> [concrete]
+// CHECK:STDOUT:   %As.Convert.type.99b: type = fn_type @As.Convert, @As(%i32) [concrete]
+// CHECK:STDOUT:   %As.impl_witness.080: <witness> = impl_witness imports.%As.impl_witness_table.5ad, @Core.IntLiteral.as.As.impl.dc4(%int_32) [concrete]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.type.aaf: type = fn_type @Core.IntLiteral.as.As.impl.Convert.1, @Core.IntLiteral.as.As.impl.dc4(%int_32) [concrete]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.414: %Core.IntLiteral.as.As.impl.Convert.type.aaf = struct_value () [concrete]
+// CHECK:STDOUT:   %As.facet.b49: %As.type.dbd = facet_value Core.IntLiteral, (%As.impl_witness.080) [concrete]
+// CHECK:STDOUT:   %.351: type = fn_type_with_self_type %As.Convert.type.99b, %As.facet.b49 [concrete]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.bound.9f3: <bound method> = bound_method %int_1.5b8, %Core.IntLiteral.as.As.impl.Convert.414 [concrete]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.specific_fn.478: <specific function> = specific_function %Core.IntLiteral.as.As.impl.Convert.414, @Core.IntLiteral.as.As.impl.Convert.1(%int_32) [concrete]
+// CHECK:STDOUT:   %bound_method.fb8: <bound method> = bound_method %int_1.5b8, %Core.IntLiteral.as.As.impl.Convert.specific_fn.478 [concrete]
+// CHECK:STDOUT:   %int_1.5d2: %i32 = int_value 1 [concrete]
+// CHECK:STDOUT:   %u8: type = class_type @UInt, @UInt(%int_8) [concrete]
+// CHECK:STDOUT:   %pattern_type.8f3: type = pattern_type %u8 [concrete]
+// CHECK:STDOUT:   %As.type.340: type = facet_type <@As, @As(%u8)> [concrete]
+// CHECK:STDOUT:   %As.Convert.type.a56: type = fn_type @As.Convert, @As(%u8) [concrete]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.type.972: type = fn_type @Core.IntLiteral.as.As.impl.Convert.2, @Core.IntLiteral.as.As.impl.cc4(%To) [symbolic]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.276: %Core.IntLiteral.as.As.impl.Convert.type.972 = struct_value () [symbolic]
+// CHECK:STDOUT:   %As.impl_witness.fb4: <witness> = impl_witness imports.%As.impl_witness_table.e4e, @Core.IntLiteral.as.As.impl.cc4(%int_8) [concrete]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.type.d25: type = fn_type @Core.IntLiteral.as.As.impl.Convert.2, @Core.IntLiteral.as.As.impl.cc4(%int_8) [concrete]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.cd6: %Core.IntLiteral.as.As.impl.Convert.type.d25 = struct_value () [concrete]
+// CHECK:STDOUT:   %As.facet.81d: %As.type.340 = facet_value Core.IntLiteral, (%As.impl_witness.fb4) [concrete]
+// CHECK:STDOUT:   %.3dd: type = fn_type_with_self_type %As.Convert.type.a56, %As.facet.81d [concrete]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.bound.d14: <bound method> = bound_method %int_1.5b8, %Core.IntLiteral.as.As.impl.Convert.cd6 [concrete]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.specific_fn.95d: <specific function> = specific_function %Core.IntLiteral.as.As.impl.Convert.cd6, @Core.IntLiteral.as.As.impl.Convert.2(%int_8) [concrete]
+// CHECK:STDOUT:   %bound_method.084: <bound method> = bound_method %int_1.5b8, %Core.IntLiteral.as.As.impl.Convert.specific_fn.95d [concrete]
+// CHECK:STDOUT:   %int_1.e80: %u8 = int_value 1 [concrete]
+// CHECK:STDOUT:   %u16: type = class_type @UInt, @UInt(%int_16) [concrete]
+// CHECK:STDOUT:   %pattern_type.9db: type = pattern_type %u16 [concrete]
+// CHECK:STDOUT:   %As.type.e67: type = facet_type <@As, @As(%u16)> [concrete]
+// CHECK:STDOUT:   %As.Convert.type.c7c: type = fn_type @As.Convert, @As(%u16) [concrete]
+// CHECK:STDOUT:   %As.impl_witness.262: <witness> = impl_witness imports.%As.impl_witness_table.e4e, @Core.IntLiteral.as.As.impl.cc4(%int_16) [concrete]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.type.8e7: type = fn_type @Core.IntLiteral.as.As.impl.Convert.2, @Core.IntLiteral.as.As.impl.cc4(%int_16) [concrete]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.d77: %Core.IntLiteral.as.As.impl.Convert.type.8e7 = struct_value () [concrete]
+// CHECK:STDOUT:   %As.facet.626: %As.type.e67 = facet_value Core.IntLiteral, (%As.impl_witness.262) [concrete]
+// CHECK:STDOUT:   %.982: type = fn_type_with_self_type %As.Convert.type.c7c, %As.facet.626 [concrete]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.bound.37a: <bound method> = bound_method %int_1.5b8, %Core.IntLiteral.as.As.impl.Convert.d77 [concrete]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.specific_fn.427: <specific function> = specific_function %Core.IntLiteral.as.As.impl.Convert.d77, @Core.IntLiteral.as.As.impl.Convert.2(%int_16) [concrete]
+// CHECK:STDOUT:   %bound_method.552: <bound method> = bound_method %int_1.5b8, %Core.IntLiteral.as.As.impl.Convert.specific_fn.427 [concrete]
+// CHECK:STDOUT:   %int_1.3e8: %u16 = int_value 1 [concrete]
+// CHECK:STDOUT:   %u32: type = class_type @UInt, @UInt(%int_32) [concrete]
+// CHECK:STDOUT:   %pattern_type.4a9: type = pattern_type %u32 [concrete]
+// CHECK:STDOUT:   %As.type.45b: type = facet_type <@As, @As(%u32)> [concrete]
+// CHECK:STDOUT:   %As.Convert.type.b94: type = fn_type @As.Convert, @As(%u32) [concrete]
+// CHECK:STDOUT:   %As.impl_witness.556: <witness> = impl_witness imports.%As.impl_witness_table.e4e, @Core.IntLiteral.as.As.impl.cc4(%int_32) [concrete]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.type.847: type = fn_type @Core.IntLiteral.as.As.impl.Convert.2, @Core.IntLiteral.as.As.impl.cc4(%int_32) [concrete]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.51e: %Core.IntLiteral.as.As.impl.Convert.type.847 = struct_value () [concrete]
+// CHECK:STDOUT:   %As.facet.66b: %As.type.45b = facet_value Core.IntLiteral, (%As.impl_witness.556) [concrete]
+// CHECK:STDOUT:   %.97b: type = fn_type_with_self_type %As.Convert.type.b94, %As.facet.66b [concrete]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.bound.8e2: <bound method> = bound_method %int_1.5b8, %Core.IntLiteral.as.As.impl.Convert.51e [concrete]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.specific_fn.c3d: <specific function> = specific_function %Core.IntLiteral.as.As.impl.Convert.51e, @Core.IntLiteral.as.As.impl.Convert.2(%int_32) [concrete]
+// CHECK:STDOUT:   %bound_method.640: <bound method> = bound_method %int_1.5b8, %Core.IntLiteral.as.As.impl.Convert.specific_fn.c3d [concrete]
+// CHECK:STDOUT:   %int_1.c1d: %u32 = int_value 1 [concrete]
+// CHECK:STDOUT:   %f32.97e: type = class_type @Float, @Float(%int_32) [concrete]
+// CHECK:STDOUT:   %pattern_type.201: type = pattern_type %f32.97e [concrete]
+// CHECK:STDOUT:   %float.674bbc.1: Core.FloatLiteral = float_literal_value 10e-1 [concrete]
+// CHECK:STDOUT:   %As.type.d27: type = facet_type <@As, @As(%f32.97e)> [concrete]
+// CHECK:STDOUT:   %As.Convert.type.f5e: type = fn_type @As.Convert, @As(%f32.97e) [concrete]
+// CHECK:STDOUT:   %Core.FloatLiteral.as.As.impl.Convert.type.d83: type = fn_type @Core.FloatLiteral.as.As.impl.Convert, @Core.FloatLiteral.as.As.impl(%To) [symbolic]
+// CHECK:STDOUT:   %Core.FloatLiteral.as.As.impl.Convert.f91: %Core.FloatLiteral.as.As.impl.Convert.type.d83 = struct_value () [symbolic]
+// CHECK:STDOUT:   %As.impl_witness.f72: <witness> = impl_witness imports.%As.impl_witness_table.e98, @Core.FloatLiteral.as.As.impl(%int_32) [concrete]
+// CHECK:STDOUT:   %Core.FloatLiteral.as.As.impl.Convert.type.4e7: type = fn_type @Core.FloatLiteral.as.As.impl.Convert, @Core.FloatLiteral.as.As.impl(%int_32) [concrete]
+// CHECK:STDOUT:   %Core.FloatLiteral.as.As.impl.Convert.890: %Core.FloatLiteral.as.As.impl.Convert.type.4e7 = struct_value () [concrete]
+// CHECK:STDOUT:   %As.facet.885: %As.type.d27 = facet_value Core.FloatLiteral, (%As.impl_witness.f72) [concrete]
+// CHECK:STDOUT:   %.47f: type = fn_type_with_self_type %As.Convert.type.f5e, %As.facet.885 [concrete]
+// CHECK:STDOUT:   %Core.FloatLiteral.as.As.impl.Convert.bound.b9c: <bound method> = bound_method %float.674bbc.1, %Core.FloatLiteral.as.As.impl.Convert.890 [concrete]
+// CHECK:STDOUT:   %Core.FloatLiteral.as.As.impl.Convert.specific_fn.a94: <specific function> = specific_function %Core.FloatLiteral.as.As.impl.Convert.890, @Core.FloatLiteral.as.As.impl.Convert(%int_32) [concrete]
+// CHECK:STDOUT:   %bound_method.355: <bound method> = bound_method %float.674bbc.1, %Core.FloatLiteral.as.As.impl.Convert.specific_fn.a94 [concrete]
+// CHECK:STDOUT:   %float.e3b: %f32.97e = float_value 1 [concrete]
+// CHECK:STDOUT:   %int_64: Core.IntLiteral = int_value 64 [concrete]
+// CHECK:STDOUT:   %f64.d77: type = class_type @Float, @Float(%int_64) [concrete]
+// CHECK:STDOUT:   %pattern_type.0ae: type = pattern_type %f64.d77 [concrete]
+// CHECK:STDOUT:   %float.674bbc.2: Core.FloatLiteral = float_literal_value 10e-1 [concrete]
+// CHECK:STDOUT:   %As.type.6a8: type = facet_type <@As, @As(%f64.d77)> [concrete]
+// CHECK:STDOUT:   %As.Convert.type.8fc: type = fn_type @As.Convert, @As(%f64.d77) [concrete]
+// CHECK:STDOUT:   %As.impl_witness.6b0: <witness> = impl_witness imports.%As.impl_witness_table.e98, @Core.FloatLiteral.as.As.impl(%int_64) [concrete]
+// CHECK:STDOUT:   %Core.FloatLiteral.as.As.impl.Convert.type.50a: type = fn_type @Core.FloatLiteral.as.As.impl.Convert, @Core.FloatLiteral.as.As.impl(%int_64) [concrete]
+// CHECK:STDOUT:   %Core.FloatLiteral.as.As.impl.Convert.09c: %Core.FloatLiteral.as.As.impl.Convert.type.50a = struct_value () [concrete]
+// CHECK:STDOUT:   %As.facet.2ea: %As.type.6a8 = facet_value Core.FloatLiteral, (%As.impl_witness.6b0) [concrete]
+// CHECK:STDOUT:   %.bee: type = fn_type_with_self_type %As.Convert.type.8fc, %As.facet.2ea [concrete]
+// CHECK:STDOUT:   %Core.FloatLiteral.as.As.impl.Convert.bound.d51: <bound method> = bound_method %float.674bbc.2, %Core.FloatLiteral.as.As.impl.Convert.09c [concrete]
+// CHECK:STDOUT:   %Core.FloatLiteral.as.As.impl.Convert.specific_fn.905: <specific function> = specific_function %Core.FloatLiteral.as.As.impl.Convert.09c, @Core.FloatLiteral.as.As.impl.Convert(%int_64) [concrete]
+// CHECK:STDOUT:   %bound_method.60f: <bound method> = bound_method %float.674bbc.2, %Core.FloatLiteral.as.As.impl.Convert.specific_fn.905 [concrete]
+// CHECK:STDOUT:   %float.d20: %f64.d77 = float_value 1 [concrete]
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: imports {
+// CHECK:STDOUT:   %Cpp: <namespace> = namespace file.%Cpp.import_cpp, [concrete] {
+// CHECK:STDOUT:     .signed_char = @F.%i8.1
+// CHECK:STDOUT:     .short = @F.%i16.1
+// CHECK:STDOUT:     .int = @F.%i32.1
+// CHECK:STDOUT:     .unsigned_char = @F.%u8.1
+// CHECK:STDOUT:     .unsigned_short = @F.%u16.1
+// CHECK:STDOUT:     .unsigned_int = @F.%u32.1
+// CHECK:STDOUT:     .float = @F.%f32.1
+// CHECK:STDOUT:     .double = @F.%f64.1
+// CHECK:STDOUT:     import Cpp//...
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %Core.import_ref.99c: @Core.IntLiteral.as.As.impl.dc4.%Core.IntLiteral.as.As.impl.Convert.type (%Core.IntLiteral.as.As.impl.Convert.type.565) = import_ref Core//prelude/parts/int, loc32_39, loaded [symbolic = @Core.IntLiteral.as.As.impl.dc4.%Core.IntLiteral.as.As.impl.Convert (constants.%Core.IntLiteral.as.As.impl.Convert.d2c)]
+// CHECK:STDOUT:   %As.impl_witness_table.5ad = impl_witness_table (%Core.import_ref.99c), @Core.IntLiteral.as.As.impl.dc4 [concrete]
+// CHECK:STDOUT:   %Core.import_ref.611: @Core.IntLiteral.as.As.impl.cc4.%Core.IntLiteral.as.As.impl.Convert.type (%Core.IntLiteral.as.As.impl.Convert.type.972) = import_ref Core//prelude/parts/uint, loc32_40, loaded [symbolic = @Core.IntLiteral.as.As.impl.cc4.%Core.IntLiteral.as.As.impl.Convert (constants.%Core.IntLiteral.as.As.impl.Convert.276)]
+// CHECK:STDOUT:   %As.impl_witness_table.e4e = impl_witness_table (%Core.import_ref.611), @Core.IntLiteral.as.As.impl.cc4 [concrete]
+// CHECK:STDOUT:   %Core.import_ref.ea0: @Core.FloatLiteral.as.As.impl.%Core.FloatLiteral.as.As.impl.Convert.type (%Core.FloatLiteral.as.As.impl.Convert.type.d83) = import_ref Core//prelude/parts/float, loc25_41, loaded [symbolic = @Core.FloatLiteral.as.As.impl.%Core.FloatLiteral.as.As.impl.Convert (constants.%Core.FloatLiteral.as.As.impl.Convert.f91)]
+// CHECK:STDOUT:   %As.impl_witness_table.e98 = impl_witness_table (%Core.import_ref.ea0), @Core.FloatLiteral.as.As.impl [concrete]
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: fn @F() {
+// CHECK:STDOUT: !entry:
+// CHECK:STDOUT:   name_binding_decl {
+// CHECK:STDOUT:     %cpp_signed_char.patt: %pattern_type.e3f = binding_pattern cpp_signed_char [concrete]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %int_1.loc8: Core.IntLiteral = int_value 1 [concrete = constants.%int_1.5b8]
+// CHECK:STDOUT:   %int_8.loc8: Core.IntLiteral = int_value 8 [concrete = constants.%int_8]
+// CHECK:STDOUT:   %i8.loc8: type = class_type @Int, @Int(constants.%int_8) [concrete = constants.%i8]
+// CHECK:STDOUT:   %impl.elem0.loc8: %.95e = impl_witness_access constants.%As.impl_witness.d74, element0 [concrete = constants.%Core.IntLiteral.as.As.impl.Convert.e8b]
+// CHECK:STDOUT:   %bound_method.loc8_45.1: <bound method> = bound_method %int_1.loc8, %impl.elem0.loc8 [concrete = constants.%Core.IntLiteral.as.As.impl.Convert.bound.09b]
+// CHECK:STDOUT:   %specific_fn.loc8: <specific function> = specific_function %impl.elem0.loc8, @Core.IntLiteral.as.As.impl.Convert.1(constants.%int_8) [concrete = constants.%Core.IntLiteral.as.As.impl.Convert.specific_fn.2e1]
+// CHECK:STDOUT:   %bound_method.loc8_45.2: <bound method> = bound_method %int_1.loc8, %specific_fn.loc8 [concrete = constants.%bound_method.967]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.call.loc8: init %i8 = call %bound_method.loc8_45.2(%int_1.loc8) [concrete = constants.%int_1.30e]
+// CHECK:STDOUT:   %.loc8_45.1: %i8 = value_of_initializer %Core.IntLiteral.as.As.impl.Convert.call.loc8 [concrete = constants.%int_1.30e]
+// CHECK:STDOUT:   %.loc8_45.2: %i8 = converted %int_1.loc8, %.loc8_45.1 [concrete = constants.%int_1.30e]
+// CHECK:STDOUT:   %.loc8_28: type = splice_block %signed_char.ref [concrete = constants.%i8] {
+// CHECK:STDOUT:     %Cpp.ref.loc8: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
+// CHECK:STDOUT:     <elided>
+// CHECK:STDOUT:     %signed_char.ref: type = name_ref signed_char, %i8.1 [concrete = constants.%i8]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %cpp_signed_char: %i8 = bind_name cpp_signed_char, %.loc8_45.2
+// CHECK:STDOUT:   name_binding_decl {
+// CHECK:STDOUT:     %carbon_signed_char.patt: %pattern_type.e3f = binding_pattern carbon_signed_char [concrete]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %cpp_signed_char.ref: %i8 = name_ref cpp_signed_char, %cpp_signed_char
+// CHECK:STDOUT:   %.loc9: type = splice_block %i8.loc9 [concrete = constants.%i8] {
+// CHECK:STDOUT:     %int_8.loc9: Core.IntLiteral = int_value 8 [concrete = constants.%int_8]
+// CHECK:STDOUT:     %i8.loc9: type = class_type @Int, @Int(constants.%int_8) [concrete = constants.%i8]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %carbon_signed_char: %i8 = bind_name carbon_signed_char, %cpp_signed_char.ref
+// CHECK:STDOUT:   name_binding_decl {
+// CHECK:STDOUT:     %cpp_short.patt: %pattern_type.2f8 = binding_pattern cpp_short [concrete]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %int_1.loc11: Core.IntLiteral = int_value 1 [concrete = constants.%int_1.5b8]
+// CHECK:STDOUT:   %int_16.loc11: Core.IntLiteral = int_value 16 [concrete = constants.%int_16]
+// CHECK:STDOUT:   %i16.loc11: type = class_type @Int, @Int(constants.%int_16) [concrete = constants.%i16]
+// CHECK:STDOUT:   %impl.elem0.loc11: %.026 = impl_witness_access constants.%As.impl_witness.2d2, element0 [concrete = constants.%Core.IntLiteral.as.As.impl.Convert.97a]
+// CHECK:STDOUT:   %bound_method.loc11_33.1: <bound method> = bound_method %int_1.loc11, %impl.elem0.loc11 [concrete = constants.%Core.IntLiteral.as.As.impl.Convert.bound.3fb]
+// CHECK:STDOUT:   %specific_fn.loc11: <specific function> = specific_function %impl.elem0.loc11, @Core.IntLiteral.as.As.impl.Convert.1(constants.%int_16) [concrete = constants.%Core.IntLiteral.as.As.impl.Convert.specific_fn.613]
+// CHECK:STDOUT:   %bound_method.loc11_33.2: <bound method> = bound_method %int_1.loc11, %specific_fn.loc11 [concrete = constants.%bound_method.7be]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.call.loc11: init %i16 = call %bound_method.loc11_33.2(%int_1.loc11) [concrete = constants.%int_1.f90]
+// CHECK:STDOUT:   %.loc11_33.1: %i16 = value_of_initializer %Core.IntLiteral.as.As.impl.Convert.call.loc11 [concrete = constants.%int_1.f90]
+// CHECK:STDOUT:   %.loc11_33.2: %i16 = converted %int_1.loc11, %.loc11_33.1 [concrete = constants.%int_1.f90]
+// CHECK:STDOUT:   %.loc11_22: type = splice_block %short.ref [concrete = constants.%i16] {
+// CHECK:STDOUT:     %Cpp.ref.loc11: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
+// CHECK:STDOUT:     <elided>
+// CHECK:STDOUT:     %short.ref: type = name_ref short, %i16.1 [concrete = constants.%i16]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %cpp_short: %i16 = bind_name cpp_short, %.loc11_33.2
+// CHECK:STDOUT:   name_binding_decl {
+// CHECK:STDOUT:     %carbon_short.patt: %pattern_type.2f8 = binding_pattern carbon_short [concrete]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %cpp_short.ref: %i16 = name_ref cpp_short, %cpp_short
+// CHECK:STDOUT:   %.loc12: type = splice_block %i16.loc12 [concrete = constants.%i16] {
+// CHECK:STDOUT:     %int_16.loc12: Core.IntLiteral = int_value 16 [concrete = constants.%int_16]
+// CHECK:STDOUT:     %i16.loc12: type = class_type @Int, @Int(constants.%int_16) [concrete = constants.%i16]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %carbon_short: %i16 = bind_name carbon_short, %cpp_short.ref
+// CHECK:STDOUT:   name_binding_decl {
+// CHECK:STDOUT:     %cpp_int.patt: %pattern_type.7ce = binding_pattern cpp_int [concrete]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %int_1.loc14: Core.IntLiteral = int_value 1 [concrete = constants.%int_1.5b8]
+// CHECK:STDOUT:   %int_32.loc14: Core.IntLiteral = int_value 32 [concrete = constants.%int_32]
+// CHECK:STDOUT:   %i32.loc14: type = class_type @Int, @Int(constants.%int_32) [concrete = constants.%i32]
+// CHECK:STDOUT:   %impl.elem0.loc14: %.351 = impl_witness_access constants.%As.impl_witness.080, element0 [concrete = constants.%Core.IntLiteral.as.As.impl.Convert.414]
+// CHECK:STDOUT:   %bound_method.loc14_29.1: <bound method> = bound_method %int_1.loc14, %impl.elem0.loc14 [concrete = constants.%Core.IntLiteral.as.As.impl.Convert.bound.9f3]
+// CHECK:STDOUT:   %specific_fn.loc14: <specific function> = specific_function %impl.elem0.loc14, @Core.IntLiteral.as.As.impl.Convert.1(constants.%int_32) [concrete = constants.%Core.IntLiteral.as.As.impl.Convert.specific_fn.478]
+// CHECK:STDOUT:   %bound_method.loc14_29.2: <bound method> = bound_method %int_1.loc14, %specific_fn.loc14 [concrete = constants.%bound_method.fb8]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.call.loc14: init %i32 = call %bound_method.loc14_29.2(%int_1.loc14) [concrete = constants.%int_1.5d2]
+// CHECK:STDOUT:   %.loc14_29.1: %i32 = value_of_initializer %Core.IntLiteral.as.As.impl.Convert.call.loc14 [concrete = constants.%int_1.5d2]
+// CHECK:STDOUT:   %.loc14_29.2: %i32 = converted %int_1.loc14, %.loc14_29.1 [concrete = constants.%int_1.5d2]
+// CHECK:STDOUT:   %.loc14_20: type = splice_block %int.ref [concrete = constants.%i32] {
+// CHECK:STDOUT:     %Cpp.ref.loc14: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
+// CHECK:STDOUT:     <elided>
+// CHECK:STDOUT:     %int.ref: type = name_ref int, %i32.1 [concrete = constants.%i32]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %cpp_int: %i32 = bind_name cpp_int, %.loc14_29.2
+// CHECK:STDOUT:   name_binding_decl {
+// CHECK:STDOUT:     %carbon_int.patt: %pattern_type.7ce = binding_pattern carbon_int [concrete]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %cpp_int.ref: %i32 = name_ref cpp_int, %cpp_int
+// CHECK:STDOUT:   %.loc15: type = splice_block %i32.loc15 [concrete = constants.%i32] {
+// CHECK:STDOUT:     %int_32.loc15: Core.IntLiteral = int_value 32 [concrete = constants.%int_32]
+// CHECK:STDOUT:     %i32.loc15: type = class_type @Int, @Int(constants.%int_32) [concrete = constants.%i32]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %carbon_int: %i32 = bind_name carbon_int, %cpp_int.ref
+// CHECK:STDOUT:   name_binding_decl {
+// CHECK:STDOUT:     %cpp_unsigned_char.patt: %pattern_type.8f3 = binding_pattern cpp_unsigned_char [concrete]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %int_1.loc17: Core.IntLiteral = int_value 1 [concrete = constants.%int_1.5b8]
+// CHECK:STDOUT:   %int_8.loc17: Core.IntLiteral = int_value 8 [concrete = constants.%int_8]
+// CHECK:STDOUT:   %u8.loc17: type = class_type @UInt, @UInt(constants.%int_8) [concrete = constants.%u8]
+// CHECK:STDOUT:   %impl.elem0.loc17: %.3dd = impl_witness_access constants.%As.impl_witness.fb4, element0 [concrete = constants.%Core.IntLiteral.as.As.impl.Convert.cd6]
+// CHECK:STDOUT:   %bound_method.loc17_49.1: <bound method> = bound_method %int_1.loc17, %impl.elem0.loc17 [concrete = constants.%Core.IntLiteral.as.As.impl.Convert.bound.d14]
+// CHECK:STDOUT:   %specific_fn.loc17: <specific function> = specific_function %impl.elem0.loc17, @Core.IntLiteral.as.As.impl.Convert.2(constants.%int_8) [concrete = constants.%Core.IntLiteral.as.As.impl.Convert.specific_fn.95d]
+// CHECK:STDOUT:   %bound_method.loc17_49.2: <bound method> = bound_method %int_1.loc17, %specific_fn.loc17 [concrete = constants.%bound_method.084]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.call.loc17: init %u8 = call %bound_method.loc17_49.2(%int_1.loc17) [concrete = constants.%int_1.e80]
+// CHECK:STDOUT:   %.loc17_49.1: %u8 = value_of_initializer %Core.IntLiteral.as.As.impl.Convert.call.loc17 [concrete = constants.%int_1.e80]
+// CHECK:STDOUT:   %.loc17_49.2: %u8 = converted %int_1.loc17, %.loc17_49.1 [concrete = constants.%int_1.e80]
+// CHECK:STDOUT:   %.loc17_30: type = splice_block %unsigned_char.ref [concrete = constants.%u8] {
+// CHECK:STDOUT:     %Cpp.ref.loc17: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
+// CHECK:STDOUT:     <elided>
+// CHECK:STDOUT:     %unsigned_char.ref: type = name_ref unsigned_char, %u8.1 [concrete = constants.%u8]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %cpp_unsigned_char: %u8 = bind_name cpp_unsigned_char, %.loc17_49.2
+// CHECK:STDOUT:   name_binding_decl {
+// CHECK:STDOUT:     %carbon_unsigned_char.patt: %pattern_type.8f3 = binding_pattern carbon_unsigned_char [concrete]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %cpp_unsigned_char.ref: %u8 = name_ref cpp_unsigned_char, %cpp_unsigned_char
+// CHECK:STDOUT:   %.loc18: type = splice_block %u8.loc18 [concrete = constants.%u8] {
+// CHECK:STDOUT:     %int_8.loc18: Core.IntLiteral = int_value 8 [concrete = constants.%int_8]
+// CHECK:STDOUT:     %u8.loc18: type = class_type @UInt, @UInt(constants.%int_8) [concrete = constants.%u8]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %carbon_unsigned_char: %u8 = bind_name carbon_unsigned_char, %cpp_unsigned_char.ref
+// CHECK:STDOUT:   name_binding_decl {
+// CHECK:STDOUT:     %cpp_unsigned_short.patt: %pattern_type.9db = binding_pattern cpp_unsigned_short [concrete]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %int_1.loc20: Core.IntLiteral = int_value 1 [concrete = constants.%int_1.5b8]
+// CHECK:STDOUT:   %int_16.loc20: Core.IntLiteral = int_value 16 [concrete = constants.%int_16]
+// CHECK:STDOUT:   %u16.loc20: type = class_type @UInt, @UInt(constants.%int_16) [concrete = constants.%u16]
+// CHECK:STDOUT:   %impl.elem0.loc20: %.982 = impl_witness_access constants.%As.impl_witness.262, element0 [concrete = constants.%Core.IntLiteral.as.As.impl.Convert.d77]
+// CHECK:STDOUT:   %bound_method.loc20_51.1: <bound method> = bound_method %int_1.loc20, %impl.elem0.loc20 [concrete = constants.%Core.IntLiteral.as.As.impl.Convert.bound.37a]
+// CHECK:STDOUT:   %specific_fn.loc20: <specific function> = specific_function %impl.elem0.loc20, @Core.IntLiteral.as.As.impl.Convert.2(constants.%int_16) [concrete = constants.%Core.IntLiteral.as.As.impl.Convert.specific_fn.427]
+// CHECK:STDOUT:   %bound_method.loc20_51.2: <bound method> = bound_method %int_1.loc20, %specific_fn.loc20 [concrete = constants.%bound_method.552]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.call.loc20: init %u16 = call %bound_method.loc20_51.2(%int_1.loc20) [concrete = constants.%int_1.3e8]
+// CHECK:STDOUT:   %.loc20_51.1: %u16 = value_of_initializer %Core.IntLiteral.as.As.impl.Convert.call.loc20 [concrete = constants.%int_1.3e8]
+// CHECK:STDOUT:   %.loc20_51.2: %u16 = converted %int_1.loc20, %.loc20_51.1 [concrete = constants.%int_1.3e8]
+// CHECK:STDOUT:   %.loc20_31: type = splice_block %unsigned_short.ref [concrete = constants.%u16] {
+// CHECK:STDOUT:     %Cpp.ref.loc20: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
+// CHECK:STDOUT:     <elided>
+// CHECK:STDOUT:     %unsigned_short.ref: type = name_ref unsigned_short, %u16.1 [concrete = constants.%u16]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %cpp_unsigned_short: %u16 = bind_name cpp_unsigned_short, %.loc20_51.2
+// CHECK:STDOUT:   name_binding_decl {
+// CHECK:STDOUT:     %carbon_unsigned_short.patt: %pattern_type.9db = binding_pattern carbon_unsigned_short [concrete]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %cpp_unsigned_short.ref: %u16 = name_ref cpp_unsigned_short, %cpp_unsigned_short
+// CHECK:STDOUT:   %.loc21: type = splice_block %u16.loc21 [concrete = constants.%u16] {
+// CHECK:STDOUT:     %int_16.loc21: Core.IntLiteral = int_value 16 [concrete = constants.%int_16]
+// CHECK:STDOUT:     %u16.loc21: type = class_type @UInt, @UInt(constants.%int_16) [concrete = constants.%u16]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %carbon_unsigned_short: %u16 = bind_name carbon_unsigned_short, %cpp_unsigned_short.ref
+// CHECK:STDOUT:   name_binding_decl {
+// CHECK:STDOUT:     %cpp_unsigned_int.patt: %pattern_type.4a9 = binding_pattern cpp_unsigned_int [concrete]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %int_1.loc23: Core.IntLiteral = int_value 1 [concrete = constants.%int_1.5b8]
+// CHECK:STDOUT:   %int_32.loc23: Core.IntLiteral = int_value 32 [concrete = constants.%int_32]
+// CHECK:STDOUT:   %u32.loc23: type = class_type @UInt, @UInt(constants.%int_32) [concrete = constants.%u32]
+// CHECK:STDOUT:   %impl.elem0.loc23: %.97b = impl_witness_access constants.%As.impl_witness.556, element0 [concrete = constants.%Core.IntLiteral.as.As.impl.Convert.51e]
+// CHECK:STDOUT:   %bound_method.loc23_47.1: <bound method> = bound_method %int_1.loc23, %impl.elem0.loc23 [concrete = constants.%Core.IntLiteral.as.As.impl.Convert.bound.8e2]
+// CHECK:STDOUT:   %specific_fn.loc23: <specific function> = specific_function %impl.elem0.loc23, @Core.IntLiteral.as.As.impl.Convert.2(constants.%int_32) [concrete = constants.%Core.IntLiteral.as.As.impl.Convert.specific_fn.c3d]
+// CHECK:STDOUT:   %bound_method.loc23_47.2: <bound method> = bound_method %int_1.loc23, %specific_fn.loc23 [concrete = constants.%bound_method.640]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.call.loc23: init %u32 = call %bound_method.loc23_47.2(%int_1.loc23) [concrete = constants.%int_1.c1d]
+// CHECK:STDOUT:   %.loc23_47.1: %u32 = value_of_initializer %Core.IntLiteral.as.As.impl.Convert.call.loc23 [concrete = constants.%int_1.c1d]
+// CHECK:STDOUT:   %.loc23_47.2: %u32 = converted %int_1.loc23, %.loc23_47.1 [concrete = constants.%int_1.c1d]
+// CHECK:STDOUT:   %.loc23_29: type = splice_block %unsigned_int.ref [concrete = constants.%u32] {
+// CHECK:STDOUT:     %Cpp.ref.loc23: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
+// CHECK:STDOUT:     <elided>
+// CHECK:STDOUT:     %unsigned_int.ref: type = name_ref unsigned_int, %u32.1 [concrete = constants.%u32]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %cpp_unsigned_int: %u32 = bind_name cpp_unsigned_int, %.loc23_47.2
+// CHECK:STDOUT:   name_binding_decl {
+// CHECK:STDOUT:     %carbon_unsigned_int.patt: %pattern_type.4a9 = binding_pattern carbon_unsigned_int [concrete]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %cpp_unsigned_int.ref: %u32 = name_ref cpp_unsigned_int, %cpp_unsigned_int
+// CHECK:STDOUT:   %.loc24: type = splice_block %u32.loc24 [concrete = constants.%u32] {
+// CHECK:STDOUT:     %int_32.loc24: Core.IntLiteral = int_value 32 [concrete = constants.%int_32]
+// CHECK:STDOUT:     %u32.loc24: type = class_type @UInt, @UInt(constants.%int_32) [concrete = constants.%u32]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %carbon_unsigned_int: %u32 = bind_name carbon_unsigned_int, %cpp_unsigned_int.ref
+// CHECK:STDOUT:   name_binding_decl {
+// CHECK:STDOUT:     %cpp_float.patt: %pattern_type.201 = binding_pattern cpp_float [concrete]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %float.loc26: Core.FloatLiteral = float_literal_value 10e-1 [concrete = constants.%float.674bbc.1]
+// CHECK:STDOUT:   %int_32.loc26: Core.IntLiteral = int_value 32 [concrete = constants.%int_32]
+// CHECK:STDOUT:   %f32.loc26: type = class_type @Float, @Float(constants.%int_32) [concrete = constants.%f32.97e]
+// CHECK:STDOUT:   %impl.elem0.loc26: %.47f = impl_witness_access constants.%As.impl_witness.f72, element0 [concrete = constants.%Core.FloatLiteral.as.As.impl.Convert.890]
+// CHECK:STDOUT:   %bound_method.loc26_35.1: <bound method> = bound_method %float.loc26, %impl.elem0.loc26 [concrete = constants.%Core.FloatLiteral.as.As.impl.Convert.bound.b9c]
+// CHECK:STDOUT:   %specific_fn.loc26: <specific function> = specific_function %impl.elem0.loc26, @Core.FloatLiteral.as.As.impl.Convert(constants.%int_32) [concrete = constants.%Core.FloatLiteral.as.As.impl.Convert.specific_fn.a94]
+// CHECK:STDOUT:   %bound_method.loc26_35.2: <bound method> = bound_method %float.loc26, %specific_fn.loc26 [concrete = constants.%bound_method.355]
+// CHECK:STDOUT:   %Core.FloatLiteral.as.As.impl.Convert.call.loc26: init %f32.97e = call %bound_method.loc26_35.2(%float.loc26) [concrete = constants.%float.e3b]
+// CHECK:STDOUT:   %.loc26_35.1: %f32.97e = value_of_initializer %Core.FloatLiteral.as.As.impl.Convert.call.loc26 [concrete = constants.%float.e3b]
+// CHECK:STDOUT:   %.loc26_35.2: %f32.97e = converted %float.loc26, %.loc26_35.1 [concrete = constants.%float.e3b]
+// CHECK:STDOUT:   %.loc26_22: type = splice_block %float.ref [concrete = constants.%f32.97e] {
+// CHECK:STDOUT:     %Cpp.ref.loc26: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
+// CHECK:STDOUT:     <elided>
+// CHECK:STDOUT:     %float.ref: type = name_ref float, %f32.1 [concrete = constants.%f32.97e]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %cpp_float: %f32.97e = bind_name cpp_float, %.loc26_35.2
+// CHECK:STDOUT:   name_binding_decl {
+// CHECK:STDOUT:     %carbon_float.patt: %pattern_type.201 = binding_pattern carbon_float [concrete]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %cpp_float.ref: %f32.97e = name_ref cpp_float, %cpp_float
+// CHECK:STDOUT:   %.loc27: type = splice_block %f32.loc27 [concrete = constants.%f32.97e] {
+// CHECK:STDOUT:     %int_32.loc27: Core.IntLiteral = int_value 32 [concrete = constants.%int_32]
+// CHECK:STDOUT:     %f32.loc27: type = class_type @Float, @Float(constants.%int_32) [concrete = constants.%f32.97e]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %carbon_float: %f32.97e = bind_name carbon_float, %cpp_float.ref
+// CHECK:STDOUT:   name_binding_decl {
+// CHECK:STDOUT:     %cpp_double.patt: %pattern_type.0ae = binding_pattern cpp_double [concrete]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %float.loc29: Core.FloatLiteral = float_literal_value 10e-1 [concrete = constants.%float.674bbc.2]
+// CHECK:STDOUT:   %int_64.loc29: Core.IntLiteral = int_value 64 [concrete = constants.%int_64]
+// CHECK:STDOUT:   %f64.loc29: type = class_type @Float, @Float(constants.%int_64) [concrete = constants.%f64.d77]
+// CHECK:STDOUT:   %impl.elem0.loc29: %.bee = impl_witness_access constants.%As.impl_witness.6b0, element0 [concrete = constants.%Core.FloatLiteral.as.As.impl.Convert.09c]
+// CHECK:STDOUT:   %bound_method.loc29_37.1: <bound method> = bound_method %float.loc29, %impl.elem0.loc29 [concrete = constants.%Core.FloatLiteral.as.As.impl.Convert.bound.d51]
+// CHECK:STDOUT:   %specific_fn.loc29: <specific function> = specific_function %impl.elem0.loc29, @Core.FloatLiteral.as.As.impl.Convert(constants.%int_64) [concrete = constants.%Core.FloatLiteral.as.As.impl.Convert.specific_fn.905]
+// CHECK:STDOUT:   %bound_method.loc29_37.2: <bound method> = bound_method %float.loc29, %specific_fn.loc29 [concrete = constants.%bound_method.60f]
+// CHECK:STDOUT:   %Core.FloatLiteral.as.As.impl.Convert.call.loc29: init %f64.d77 = call %bound_method.loc29_37.2(%float.loc29) [concrete = constants.%float.d20]
+// CHECK:STDOUT:   %.loc29_37.1: %f64.d77 = value_of_initializer %Core.FloatLiteral.as.As.impl.Convert.call.loc29 [concrete = constants.%float.d20]
+// CHECK:STDOUT:   %.loc29_37.2: %f64.d77 = converted %float.loc29, %.loc29_37.1 [concrete = constants.%float.d20]
+// CHECK:STDOUT:   %.loc29_23: type = splice_block %double.ref [concrete = constants.%f64.d77] {
+// CHECK:STDOUT:     %Cpp.ref.loc29: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
+// CHECK:STDOUT:     <elided>
+// CHECK:STDOUT:     %double.ref: type = name_ref double, %f64.1 [concrete = constants.%f64.d77]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %cpp_double: %f64.d77 = bind_name cpp_double, %.loc29_37.2
+// CHECK:STDOUT:   name_binding_decl {
+// CHECK:STDOUT:     %carbon_double.patt: %pattern_type.0ae = binding_pattern carbon_double [concrete]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %cpp_double.ref: %f64.d77 = name_ref cpp_double, %cpp_double
+// CHECK:STDOUT:   %.loc30: type = splice_block %f64.loc30 [concrete = constants.%f64.d77] {
+// CHECK:STDOUT:     %int_64.loc30: Core.IntLiteral = int_value 64 [concrete = constants.%int_64]
+// CHECK:STDOUT:     %f64.loc30: type = class_type @Float, @Float(constants.%int_64) [concrete = constants.%f64.d77]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %carbon_double: %f64.d77 = bind_name carbon_double, %cpp_double.ref
+// CHECK:STDOUT:   <elided>
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: --- fail_todo_unsupported_types.carbon
+// CHECK:STDOUT:
+// CHECK:STDOUT: constants {
+// CHECK:STDOUT:   %float.674: Core.FloatLiteral = float_literal_value 10e-1 [concrete]
+// CHECK:STDOUT:   %int_64: Core.IntLiteral = int_value 64 [concrete]
+// CHECK:STDOUT:   %f64.d77: type = class_type @Float, @Float(%int_64) [concrete]
+// CHECK:STDOUT:   %As.type.6a8: type = facet_type <@As, @As(%f64.d77)> [concrete]
+// CHECK:STDOUT:   %As.Convert.type.8fc: type = fn_type @As.Convert, @As(%f64.d77) [concrete]
+// CHECK:STDOUT:   %To: Core.IntLiteral = bind_symbolic_name To, 0 [symbolic]
+// CHECK:STDOUT:   %Core.FloatLiteral.as.As.impl.Convert.type.d83: type = fn_type @Core.FloatLiteral.as.As.impl.Convert, @Core.FloatLiteral.as.As.impl(%To) [symbolic]
+// CHECK:STDOUT:   %Core.FloatLiteral.as.As.impl.Convert.f91: %Core.FloatLiteral.as.As.impl.Convert.type.d83 = struct_value () [symbolic]
+// CHECK:STDOUT:   %As.impl_witness.6b0: <witness> = impl_witness imports.%As.impl_witness_table, @Core.FloatLiteral.as.As.impl(%int_64) [concrete]
+// CHECK:STDOUT:   %Core.FloatLiteral.as.As.impl.Convert.type.50a: type = fn_type @Core.FloatLiteral.as.As.impl.Convert, @Core.FloatLiteral.as.As.impl(%int_64) [concrete]
+// CHECK:STDOUT:   %Core.FloatLiteral.as.As.impl.Convert.09c: %Core.FloatLiteral.as.As.impl.Convert.type.50a = struct_value () [concrete]
+// CHECK:STDOUT:   %As.facet: %As.type.6a8 = facet_value Core.FloatLiteral, (%As.impl_witness.6b0) [concrete]
+// CHECK:STDOUT:   %.bee: type = fn_type_with_self_type %As.Convert.type.8fc, %As.facet [concrete]
+// CHECK:STDOUT:   %Core.FloatLiteral.as.As.impl.Convert.bound: <bound method> = bound_method %float.674, %Core.FloatLiteral.as.As.impl.Convert.09c [concrete]
+// CHECK:STDOUT:   %pattern_type.0ae: type = pattern_type %f64.d77 [concrete]
+// CHECK:STDOUT:   %Core.FloatLiteral.as.As.impl.Convert.specific_fn: <specific function> = specific_function %Core.FloatLiteral.as.As.impl.Convert.09c, @Core.FloatLiteral.as.As.impl.Convert(%int_64) [concrete]
+// CHECK:STDOUT:   %bound_method: <bound method> = bound_method %float.674, %Core.FloatLiteral.as.As.impl.Convert.specific_fn [concrete]
+// CHECK:STDOUT:   %float.d20: %f64.d77 = float_value 1 [concrete]
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: imports {
+// CHECK:STDOUT:   %Core.import_ref.ea0: @Core.FloatLiteral.as.As.impl.%Core.FloatLiteral.as.As.impl.Convert.type (%Core.FloatLiteral.as.As.impl.Convert.type.d83) = import_ref Core//prelude/parts/float, loc25_41, loaded [symbolic = @Core.FloatLiteral.as.As.impl.%Core.FloatLiteral.as.As.impl.Convert (constants.%Core.FloatLiteral.as.As.impl.Convert.f91)]
+// CHECK:STDOUT:   %As.impl_witness_table = impl_witness_table (%Core.import_ref.ea0), @Core.FloatLiteral.as.As.impl [concrete]
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: fn @F() {
+// CHECK:STDOUT: !entry:
+// CHECK:STDOUT:   name_binding_decl {
+// CHECK:STDOUT:     %cpp_long_double.patt: <error> = binding_pattern cpp_long_double [concrete]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %float: Core.FloatLiteral = float_literal_value 10e-1 [concrete = constants.%float.674]
+// CHECK:STDOUT:   %int_64.loc15: Core.IntLiteral = int_value 64 [concrete = constants.%int_64]
+// CHECK:STDOUT:   %f64.loc15: type = class_type @Float, @Float(constants.%int_64) [concrete = constants.%f64.d77]
+// CHECK:STDOUT:   %impl.elem0: %.bee = impl_witness_access constants.%As.impl_witness.6b0, element0 [concrete = constants.%Core.FloatLiteral.as.As.impl.Convert.09c]
+// CHECK:STDOUT:   %bound_method.loc15_47.1: <bound method> = bound_method %float, %impl.elem0 [concrete = constants.%Core.FloatLiteral.as.As.impl.Convert.bound]
+// CHECK:STDOUT:   %specific_fn: <specific function> = specific_function %impl.elem0, @Core.FloatLiteral.as.As.impl.Convert(constants.%int_64) [concrete = constants.%Core.FloatLiteral.as.As.impl.Convert.specific_fn]
+// CHECK:STDOUT:   %bound_method.loc15_47.2: <bound method> = bound_method %float, %specific_fn [concrete = constants.%bound_method]
+// CHECK:STDOUT:   %Core.FloatLiteral.as.As.impl.Convert.call: init %f64.d77 = call %bound_method.loc15_47.2(%float) [concrete = constants.%float.d20]
+// CHECK:STDOUT:   %.loc15_47.1: %f64.d77 = value_of_initializer %Core.FloatLiteral.as.As.impl.Convert.call [concrete = constants.%float.d20]
+// CHECK:STDOUT:   %.loc15_47.2: %f64.d77 = converted %float, %.loc15_47.1 [concrete = constants.%float.d20]
+// CHECK:STDOUT:   <elided>
+// CHECK:STDOUT:   %cpp_long_double: <error> = bind_name cpp_long_double, <error> [concrete = <error>]
+// CHECK:STDOUT:   name_binding_decl {
+// CHECK:STDOUT:     %carbon_long_double.patt: %pattern_type.0ae = binding_pattern carbon_long_double [concrete]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %cpp_long_double.ref: <error> = name_ref cpp_long_double, %cpp_long_double [concrete = <error>]
+// CHECK:STDOUT:   %.loc16: type = splice_block %f64.loc16 [concrete = constants.%f64.d77] {
+// CHECK:STDOUT:     %int_64.loc16: Core.IntLiteral = int_value 64 [concrete = constants.%int_64]
+// CHECK:STDOUT:     %f64.loc16: type = class_type @Float, @Float(constants.%int_64) [concrete = constants.%f64.d77]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %carbon_long_double: %f64.d77 = bind_name carbon_long_double, <error> [concrete = <error>]
+// CHECK:STDOUT:   <elided>
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: --- override_builtin.carbon
+// CHECK:STDOUT:
+// CHECK:STDOUT: constants {
+// CHECK:STDOUT:   %empty_tuple.type: type = tuple_type () [concrete]
+// CHECK:STDOUT:   %unsigned_int: type = class_type @unsigned_int [concrete]
+// CHECK:STDOUT:   %pattern_type.5ec: type = pattern_type %unsigned_int [concrete]
+// CHECK:STDOUT:   %int_32: Core.IntLiteral = int_value 32 [concrete]
+// CHECK:STDOUT:   %u32: type = class_type @UInt, @UInt(%int_32) [concrete]
+// CHECK:STDOUT:   %pattern_type.4a9: type = pattern_type %u32 [concrete]
+// CHECK:STDOUT:   %.15a: type = cpp_overload_set_type @unsigned_int.foo [concrete]
+// CHECK:STDOUT:   %empty_struct: %.15a = struct_value () [concrete]
+// CHECK:STDOUT:   %ptr.d47: type = ptr_type %unsigned_int [concrete]
+// CHECK:STDOUT:   %unsigned_int.foo.type: type = fn_type @unsigned_int.foo [concrete]
+// CHECK:STDOUT:   %unsigned_int.foo: %unsigned_int.foo.type = struct_value () [concrete]
+// CHECK:STDOUT:   %T.as.Destroy.impl.Op.type.66e: type = fn_type @T.as.Destroy.impl.Op, @T.as.Destroy.impl(%unsigned_int) [concrete]
+// CHECK:STDOUT:   %T.as.Destroy.impl.Op.428: %T.as.Destroy.impl.Op.type.66e = struct_value () [concrete]
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: imports {
+// CHECK:STDOUT:   %Cpp: <namespace> = namespace file.%Cpp.import_cpp, [concrete] {
+// CHECK:STDOUT:     .unsigned_int = %unsigned_int.decl
+// CHECK:STDOUT:     import Cpp//...
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %unsigned_int.decl: type = class_decl @unsigned_int [concrete = constants.%unsigned_int] {} {}
+// CHECK:STDOUT:   %.afb: %.15a = cpp_overload_set_value @unsigned_int.foo [concrete = constants.%empty_struct]
+// CHECK:STDOUT:   %unsigned_int.foo.decl: %unsigned_int.foo.type = fn_decl @unsigned_int.foo [concrete = constants.%unsigned_int.foo] {
+// CHECK:STDOUT:     <elided>
+// CHECK:STDOUT:   } {
+// CHECK:STDOUT:     <elided>
+// CHECK:STDOUT:   }
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: fn @F() {
+// CHECK:STDOUT: !entry:
+// CHECK:STDOUT:   name_binding_decl {
+// CHECK:STDOUT:     %unsigned_int.patt: %pattern_type.5ec = binding_pattern unsigned_int [concrete]
+// CHECK:STDOUT:     %unsigned_int.var_patt: %pattern_type.5ec = var_pattern %unsigned_int.patt [concrete]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %unsigned_int.var: ref %unsigned_int = var %unsigned_int.var_patt
+// CHECK:STDOUT:   %.loc12: type = splice_block %unsigned_int.ref.loc12 [concrete = constants.%unsigned_int] {
+// CHECK:STDOUT:     %Cpp.ref: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
+// CHECK:STDOUT:     %unsigned_int.ref.loc12: type = name_ref unsigned_int, imports.%unsigned_int.decl [concrete = constants.%unsigned_int]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %unsigned_int: ref %unsigned_int = bind_name unsigned_int, %unsigned_int.var
+// CHECK:STDOUT:   name_binding_decl {
+// CHECK:STDOUT:     %x.patt: %pattern_type.4a9 = binding_pattern x [concrete]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %unsigned_int.ref.loc13: ref %unsigned_int = name_ref unsigned_int, %unsigned_int
+// CHECK:STDOUT:   %foo.ref: %.15a = name_ref foo, imports.%.afb [concrete = constants.%empty_struct]
+// CHECK:STDOUT:   %bound_method.loc13: <bound method> = bound_method %unsigned_int.ref.loc13, %foo.ref
+// CHECK:STDOUT:   %addr.loc13: %ptr.d47 = addr_of %unsigned_int.ref.loc13
+// CHECK:STDOUT:   %unsigned_int.foo.call: init %u32 = call imports.%unsigned_int.foo.decl(%addr.loc13)
+// CHECK:STDOUT:   %.loc13_10: type = splice_block %u32 [concrete = constants.%u32] {
+// CHECK:STDOUT:     %int_32: Core.IntLiteral = int_value 32 [concrete = constants.%int_32]
+// CHECK:STDOUT:     %u32: type = class_type @UInt, @UInt(constants.%int_32) [concrete = constants.%u32]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %.loc13_33.1: %u32 = value_of_initializer %unsigned_int.foo.call
+// CHECK:STDOUT:   %.loc13_33.2: %u32 = converted %unsigned_int.foo.call, %.loc13_33.1
+// CHECK:STDOUT:   %x: %u32 = bind_name x, %.loc13_33.2
+// CHECK:STDOUT:   %T.as.Destroy.impl.Op.bound: <bound method> = bound_method %unsigned_int.var, constants.%T.as.Destroy.impl.Op.428
+// CHECK:STDOUT:   <elided>
+// CHECK:STDOUT:   %bound_method.loc12: <bound method> = bound_method %unsigned_int.var, %T.as.Destroy.impl.Op.specific_fn
+// CHECK:STDOUT:   %addr.loc12: %ptr.d47 = addr_of %unsigned_int.var
+// CHECK:STDOUT:   %T.as.Destroy.impl.Op.call: init %empty_tuple.type = call %bound_method.loc12(%addr.loc12)
+// CHECK:STDOUT:   <elided>
+// CHECK:STDOUT: }
+// CHECK:STDOUT:

toolchain/check/testdata/interop/cpp/builtins.llp64.carbon

@@ -0,0 +1,268 @@
+// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
+// Exceptions. See /LICENSE for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+// INCLUDE-FILE: toolchain/testing/testdata/min_prelude/uint.carbon
+// EXTRA-ARGS: --target=x86_64-pc-windows-msvc --clang-arg=-fno-PIE
+//
+// AUTOUPDATE
+// TIP: To test this file alone, run:
+// TIP:   bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/check/testdata/interop/cpp/builtins.llp64.carbon
+// TIP: To dump output, run:
+// TIP:   bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/interop/cpp/builtins.llp64.carbon
+
+// --- supported_types.carbon
+
+library "[[@TEST_NAME]]";
+
+import Cpp inline "";
+
+fn F() {
+  //@dump-sem-ir-begin
+  let cpp_long_long : Cpp.long_long = 1 as i64;
+  let carbon_long_long: i64 = cpp_long_long;
+
+  let cpp_unsigned_long_long : Cpp.unsigned_long_long = 1 as u64;
+  let carbon_unsigned_long_long: u64 = cpp_unsigned_long_long;
+  //@dump-sem-ir-end
+}
+
+// --- fail_todo_unsupported_types.carbon
+
+library "[[@TEST_NAME]]";
+
+import Cpp inline "";
+
+fn F() {
+  //@dump-sem-ir-begin
+  // CHECK:STDERR: fail_todo_unsupported_types.carbon:[[@LINE+7]]:18: error: semantics TODO: `Unsupported: builtin type: long` [SemanticsTodo]
+  // CHECK:STDERR:   let cpp_long : Cpp.long = 1 as i64;
+  // CHECK:STDERR:                  ^~~~~~~~
+  // CHECK:STDERR: fail_todo_unsupported_types.carbon:[[@LINE+4]]:18: note: in `Cpp` name lookup for `long` [InCppNameLookup]
+  // CHECK:STDERR:   let cpp_long : Cpp.long = 1 as i64;
+  // CHECK:STDERR:                  ^~~~~~~~
+  // CHECK:STDERR:
+  let cpp_long : Cpp.long = 1 as i64;
+  let carbon_long: i64 = cpp_long;
+
+  // CHECK:STDERR: fail_todo_unsupported_types.carbon:[[@LINE+7]]:27: error: semantics TODO: `Unsupported: builtin type: unsigned long` [SemanticsTodo]
+  // CHECK:STDERR:   let cpp_unsigned_long : Cpp.unsigned_long = 1 as u64;
+  // CHECK:STDERR:                           ^~~~~~~~~~~~~~~~~
+  // CHECK:STDERR: fail_todo_unsupported_types.carbon:[[@LINE+4]]:27: note: in `Cpp` name lookup for `unsigned_long` [InCppNameLookup]
+  // CHECK:STDERR:   let cpp_unsigned_long : Cpp.unsigned_long = 1 as u64;
+  // CHECK:STDERR:                           ^~~~~~~~~~~~~~~~~
+  // CHECK:STDERR:
+  let cpp_unsigned_long : Cpp.unsigned_long = 1 as u64;
+  let carbon_unsigned_long: u64 = cpp_unsigned_long;
+  //@dump-sem-ir-end
+}
+
+// CHECK:STDOUT: --- supported_types.carbon
+// CHECK:STDOUT:
+// CHECK:STDOUT: constants {
+// CHECK:STDOUT:   %int_64: Core.IntLiteral = int_value 64 [concrete]
+// CHECK:STDOUT:   %i64: type = class_type @Int, @Int(%int_64) [concrete]
+// CHECK:STDOUT:   %pattern_type.95b: type = pattern_type %i64 [concrete]
+// CHECK:STDOUT:   %int_1.5b8: Core.IntLiteral = int_value 1 [concrete]
+// CHECK:STDOUT:   %As.type.bbb: type = facet_type <@As, @As(%i64)> [concrete]
+// CHECK:STDOUT:   %As.Convert.type.d57: type = fn_type @As.Convert, @As(%i64) [concrete]
+// CHECK:STDOUT:   %To: Core.IntLiteral = bind_symbolic_name To, 0 [symbolic]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.type.565: type = fn_type @Core.IntLiteral.as.As.impl.Convert.1, @Core.IntLiteral.as.As.impl.dc4(%To) [symbolic]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.d2c: %Core.IntLiteral.as.As.impl.Convert.type.565 = struct_value () [symbolic]
+// CHECK:STDOUT:   %As.impl_witness.4f1: <witness> = impl_witness imports.%As.impl_witness_table.5ad, @Core.IntLiteral.as.As.impl.dc4(%int_64) [concrete]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.type.9ac: type = fn_type @Core.IntLiteral.as.As.impl.Convert.1, @Core.IntLiteral.as.As.impl.dc4(%int_64) [concrete]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.fe2: %Core.IntLiteral.as.As.impl.Convert.type.9ac = struct_value () [concrete]
+// CHECK:STDOUT:   %As.facet.888: %As.type.bbb = facet_value Core.IntLiteral, (%As.impl_witness.4f1) [concrete]
+// CHECK:STDOUT:   %.b12: type = fn_type_with_self_type %As.Convert.type.d57, %As.facet.888 [concrete]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.bound.0c0: <bound method> = bound_method %int_1.5b8, %Core.IntLiteral.as.As.impl.Convert.fe2 [concrete]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.specific_fn.96b: <specific function> = specific_function %Core.IntLiteral.as.As.impl.Convert.fe2, @Core.IntLiteral.as.As.impl.Convert.1(%int_64) [concrete]
+// CHECK:STDOUT:   %bound_method.b11: <bound method> = bound_method %int_1.5b8, %Core.IntLiteral.as.As.impl.Convert.specific_fn.96b [concrete]
+// CHECK:STDOUT:   %int_1.41a: %i64 = int_value 1 [concrete]
+// CHECK:STDOUT:   %u64: type = class_type @UInt, @UInt(%int_64) [concrete]
+// CHECK:STDOUT:   %pattern_type.157: type = pattern_type %u64 [concrete]
+// CHECK:STDOUT:   %As.type.465: type = facet_type <@As, @As(%u64)> [concrete]
+// CHECK:STDOUT:   %As.Convert.type.7eb: type = fn_type @As.Convert, @As(%u64) [concrete]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.type.972: type = fn_type @Core.IntLiteral.as.As.impl.Convert.2, @Core.IntLiteral.as.As.impl.cc4(%To) [symbolic]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.276: %Core.IntLiteral.as.As.impl.Convert.type.972 = struct_value () [symbolic]
+// CHECK:STDOUT:   %As.impl_witness.feb: <witness> = impl_witness imports.%As.impl_witness_table.e4e, @Core.IntLiteral.as.As.impl.cc4(%int_64) [concrete]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.type.da0: type = fn_type @Core.IntLiteral.as.As.impl.Convert.2, @Core.IntLiteral.as.As.impl.cc4(%int_64) [concrete]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.467: %Core.IntLiteral.as.As.impl.Convert.type.da0 = struct_value () [concrete]
+// CHECK:STDOUT:   %As.facet.218: %As.type.465 = facet_value Core.IntLiteral, (%As.impl_witness.feb) [concrete]
+// CHECK:STDOUT:   %.e88: type = fn_type_with_self_type %As.Convert.type.7eb, %As.facet.218 [concrete]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.bound.fec: <bound method> = bound_method %int_1.5b8, %Core.IntLiteral.as.As.impl.Convert.467 [concrete]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.specific_fn.6f5: <specific function> = specific_function %Core.IntLiteral.as.As.impl.Convert.467, @Core.IntLiteral.as.As.impl.Convert.2(%int_64) [concrete]
+// CHECK:STDOUT:   %bound_method.290: <bound method> = bound_method %int_1.5b8, %Core.IntLiteral.as.As.impl.Convert.specific_fn.6f5 [concrete]
+// CHECK:STDOUT:   %int_1.f23: %u64 = int_value 1 [concrete]
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: imports {
+// CHECK:STDOUT:   %Cpp: <namespace> = namespace file.%Cpp.import_cpp, [concrete] {
+// CHECK:STDOUT:     .long_long = @F.%i64.1
+// CHECK:STDOUT:     .unsigned_long_long = @F.%u64.1
+// CHECK:STDOUT:     import Cpp//...
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %Core.import_ref.99c: @Core.IntLiteral.as.As.impl.dc4.%Core.IntLiteral.as.As.impl.Convert.type (%Core.IntLiteral.as.As.impl.Convert.type.565) = import_ref Core//prelude/parts/int, loc32_39, loaded [symbolic = @Core.IntLiteral.as.As.impl.dc4.%Core.IntLiteral.as.As.impl.Convert (constants.%Core.IntLiteral.as.As.impl.Convert.d2c)]
+// CHECK:STDOUT:   %As.impl_witness_table.5ad = impl_witness_table (%Core.import_ref.99c), @Core.IntLiteral.as.As.impl.dc4 [concrete]
+// CHECK:STDOUT:   %Core.import_ref.611: @Core.IntLiteral.as.As.impl.cc4.%Core.IntLiteral.as.As.impl.Convert.type (%Core.IntLiteral.as.As.impl.Convert.type.972) = import_ref Core//prelude/parts/uint, loc32_40, loaded [symbolic = @Core.IntLiteral.as.As.impl.cc4.%Core.IntLiteral.as.As.impl.Convert (constants.%Core.IntLiteral.as.As.impl.Convert.276)]
+// CHECK:STDOUT:   %As.impl_witness_table.e4e = impl_witness_table (%Core.import_ref.611), @Core.IntLiteral.as.As.impl.cc4 [concrete]
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: fn @F() {
+// CHECK:STDOUT: !entry:
+// CHECK:STDOUT:   name_binding_decl {
+// CHECK:STDOUT:     %cpp_long_long.patt: %pattern_type.95b = binding_pattern cpp_long_long [concrete]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %int_1.loc8: Core.IntLiteral = int_value 1 [concrete = constants.%int_1.5b8]
+// CHECK:STDOUT:   %int_64.loc8: Core.IntLiteral = int_value 64 [concrete = constants.%int_64]
+// CHECK:STDOUT:   %i64.loc8: type = class_type @Int, @Int(constants.%int_64) [concrete = constants.%i64]
+// CHECK:STDOUT:   %impl.elem0.loc8: %.b12 = impl_witness_access constants.%As.impl_witness.4f1, element0 [concrete = constants.%Core.IntLiteral.as.As.impl.Convert.fe2]
+// CHECK:STDOUT:   %bound_method.loc8_41.1: <bound method> = bound_method %int_1.loc8, %impl.elem0.loc8 [concrete = constants.%Core.IntLiteral.as.As.impl.Convert.bound.0c0]
+// CHECK:STDOUT:   %specific_fn.loc8: <specific function> = specific_function %impl.elem0.loc8, @Core.IntLiteral.as.As.impl.Convert.1(constants.%int_64) [concrete = constants.%Core.IntLiteral.as.As.impl.Convert.specific_fn.96b]
+// CHECK:STDOUT:   %bound_method.loc8_41.2: <bound method> = bound_method %int_1.loc8, %specific_fn.loc8 [concrete = constants.%bound_method.b11]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.call.loc8: init %i64 = call %bound_method.loc8_41.2(%int_1.loc8) [concrete = constants.%int_1.41a]
+// CHECK:STDOUT:   %.loc8_41.1: %i64 = value_of_initializer %Core.IntLiteral.as.As.impl.Convert.call.loc8 [concrete = constants.%int_1.41a]
+// CHECK:STDOUT:   %.loc8_41.2: %i64 = converted %int_1.loc8, %.loc8_41.1 [concrete = constants.%int_1.41a]
+// CHECK:STDOUT:   %.loc8_26: type = splice_block %long_long.ref [concrete = constants.%i64] {
+// CHECK:STDOUT:     %Cpp.ref.loc8: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
+// CHECK:STDOUT:     <elided>
+// CHECK:STDOUT:     %long_long.ref: type = name_ref long_long, %i64.1 [concrete = constants.%i64]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %cpp_long_long: %i64 = bind_name cpp_long_long, %.loc8_41.2
+// CHECK:STDOUT:   name_binding_decl {
+// CHECK:STDOUT:     %carbon_long_long.patt: %pattern_type.95b = binding_pattern carbon_long_long [concrete]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %cpp_long_long.ref: %i64 = name_ref cpp_long_long, %cpp_long_long
+// CHECK:STDOUT:   %.loc9: type = splice_block %i64.loc9 [concrete = constants.%i64] {
+// CHECK:STDOUT:     %int_64.loc9: Core.IntLiteral = int_value 64 [concrete = constants.%int_64]
+// CHECK:STDOUT:     %i64.loc9: type = class_type @Int, @Int(constants.%int_64) [concrete = constants.%i64]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %carbon_long_long: %i64 = bind_name carbon_long_long, %cpp_long_long.ref
+// CHECK:STDOUT:   name_binding_decl {
+// CHECK:STDOUT:     %cpp_unsigned_long_long.patt: %pattern_type.157 = binding_pattern cpp_unsigned_long_long [concrete]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %int_1.loc11: Core.IntLiteral = int_value 1 [concrete = constants.%int_1.5b8]
+// CHECK:STDOUT:   %int_64.loc11: Core.IntLiteral = int_value 64 [concrete = constants.%int_64]
+// CHECK:STDOUT:   %u64.loc11: type = class_type @UInt, @UInt(constants.%int_64) [concrete = constants.%u64]
+// CHECK:STDOUT:   %impl.elem0.loc11: %.e88 = impl_witness_access constants.%As.impl_witness.feb, element0 [concrete = constants.%Core.IntLiteral.as.As.impl.Convert.467]
+// CHECK:STDOUT:   %bound_method.loc11_59.1: <bound method> = bound_method %int_1.loc11, %impl.elem0.loc11 [concrete = constants.%Core.IntLiteral.as.As.impl.Convert.bound.fec]
+// CHECK:STDOUT:   %specific_fn.loc11: <specific function> = specific_function %impl.elem0.loc11, @Core.IntLiteral.as.As.impl.Convert.2(constants.%int_64) [concrete = constants.%Core.IntLiteral.as.As.impl.Convert.specific_fn.6f5]
+// CHECK:STDOUT:   %bound_method.loc11_59.2: <bound method> = bound_method %int_1.loc11, %specific_fn.loc11 [concrete = constants.%bound_method.290]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.call.loc11: init %u64 = call %bound_method.loc11_59.2(%int_1.loc11) [concrete = constants.%int_1.f23]
+// CHECK:STDOUT:   %.loc11_59.1: %u64 = value_of_initializer %Core.IntLiteral.as.As.impl.Convert.call.loc11 [concrete = constants.%int_1.f23]
+// CHECK:STDOUT:   %.loc11_59.2: %u64 = converted %int_1.loc11, %.loc11_59.1 [concrete = constants.%int_1.f23]
+// CHECK:STDOUT:   %.loc11_35: type = splice_block %unsigned_long_long.ref [concrete = constants.%u64] {
+// CHECK:STDOUT:     %Cpp.ref.loc11: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
+// CHECK:STDOUT:     <elided>
+// CHECK:STDOUT:     %unsigned_long_long.ref: type = name_ref unsigned_long_long, %u64.1 [concrete = constants.%u64]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %cpp_unsigned_long_long: %u64 = bind_name cpp_unsigned_long_long, %.loc11_59.2
+// CHECK:STDOUT:   name_binding_decl {
+// CHECK:STDOUT:     %carbon_unsigned_long_long.patt: %pattern_type.157 = binding_pattern carbon_unsigned_long_long [concrete]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %cpp_unsigned_long_long.ref: %u64 = name_ref cpp_unsigned_long_long, %cpp_unsigned_long_long
+// CHECK:STDOUT:   %.loc12: type = splice_block %u64.loc12 [concrete = constants.%u64] {
+// CHECK:STDOUT:     %int_64.loc12: Core.IntLiteral = int_value 64 [concrete = constants.%int_64]
+// CHECK:STDOUT:     %u64.loc12: type = class_type @UInt, @UInt(constants.%int_64) [concrete = constants.%u64]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %carbon_unsigned_long_long: %u64 = bind_name carbon_unsigned_long_long, %cpp_unsigned_long_long.ref
+// CHECK:STDOUT:   <elided>
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: --- fail_todo_unsupported_types.carbon
+// CHECK:STDOUT:
+// CHECK:STDOUT: constants {
+// CHECK:STDOUT:   %int_1.5b8: Core.IntLiteral = int_value 1 [concrete]
+// CHECK:STDOUT:   %int_64: Core.IntLiteral = int_value 64 [concrete]
+// CHECK:STDOUT:   %i64: type = class_type @Int, @Int(%int_64) [concrete]
+// CHECK:STDOUT:   %As.type.bbb: type = facet_type <@As, @As(%i64)> [concrete]
+// CHECK:STDOUT:   %As.Convert.type.d57: type = fn_type @As.Convert, @As(%i64) [concrete]
+// CHECK:STDOUT:   %To: Core.IntLiteral = bind_symbolic_name To, 0 [symbolic]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.type.565: type = fn_type @Core.IntLiteral.as.As.impl.Convert.1, @Core.IntLiteral.as.As.impl.dc4(%To) [symbolic]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.d2c: %Core.IntLiteral.as.As.impl.Convert.type.565 = struct_value () [symbolic]
+// CHECK:STDOUT:   %As.impl_witness.4f1: <witness> = impl_witness imports.%As.impl_witness_table.5ad, @Core.IntLiteral.as.As.impl.dc4(%int_64) [concrete]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.type.9ac: type = fn_type @Core.IntLiteral.as.As.impl.Convert.1, @Core.IntLiteral.as.As.impl.dc4(%int_64) [concrete]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.fe2: %Core.IntLiteral.as.As.impl.Convert.type.9ac = struct_value () [concrete]
+// CHECK:STDOUT:   %As.facet.888: %As.type.bbb = facet_value Core.IntLiteral, (%As.impl_witness.4f1) [concrete]
+// CHECK:STDOUT:   %.b12: type = fn_type_with_self_type %As.Convert.type.d57, %As.facet.888 [concrete]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.bound.0c0: <bound method> = bound_method %int_1.5b8, %Core.IntLiteral.as.As.impl.Convert.fe2 [concrete]
+// CHECK:STDOUT:   %pattern_type.95b: type = pattern_type %i64 [concrete]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.specific_fn.96b: <specific function> = specific_function %Core.IntLiteral.as.As.impl.Convert.fe2, @Core.IntLiteral.as.As.impl.Convert.1(%int_64) [concrete]
+// CHECK:STDOUT:   %bound_method.b11: <bound method> = bound_method %int_1.5b8, %Core.IntLiteral.as.As.impl.Convert.specific_fn.96b [concrete]
+// CHECK:STDOUT:   %int_1.41a: %i64 = int_value 1 [concrete]
+// CHECK:STDOUT:   %u64: type = class_type @UInt, @UInt(%int_64) [concrete]
+// CHECK:STDOUT:   %As.type.465: type = facet_type <@As, @As(%u64)> [concrete]
+// CHECK:STDOUT:   %As.Convert.type.7eb: type = fn_type @As.Convert, @As(%u64) [concrete]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.type.972: type = fn_type @Core.IntLiteral.as.As.impl.Convert.2, @Core.IntLiteral.as.As.impl.cc4(%To) [symbolic]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.276: %Core.IntLiteral.as.As.impl.Convert.type.972 = struct_value () [symbolic]
+// CHECK:STDOUT:   %As.impl_witness.feb: <witness> = impl_witness imports.%As.impl_witness_table.e4e, @Core.IntLiteral.as.As.impl.cc4(%int_64) [concrete]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.type.da0: type = fn_type @Core.IntLiteral.as.As.impl.Convert.2, @Core.IntLiteral.as.As.impl.cc4(%int_64) [concrete]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.467: %Core.IntLiteral.as.As.impl.Convert.type.da0 = struct_value () [concrete]
+// CHECK:STDOUT:   %As.facet.218: %As.type.465 = facet_value Core.IntLiteral, (%As.impl_witness.feb) [concrete]
+// CHECK:STDOUT:   %.e88: type = fn_type_with_self_type %As.Convert.type.7eb, %As.facet.218 [concrete]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.bound.fec: <bound method> = bound_method %int_1.5b8, %Core.IntLiteral.as.As.impl.Convert.467 [concrete]
+// CHECK:STDOUT:   %pattern_type.157: type = pattern_type %u64 [concrete]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.specific_fn.6f5: <specific function> = specific_function %Core.IntLiteral.as.As.impl.Convert.467, @Core.IntLiteral.as.As.impl.Convert.2(%int_64) [concrete]
+// CHECK:STDOUT:   %bound_method.290: <bound method> = bound_method %int_1.5b8, %Core.IntLiteral.as.As.impl.Convert.specific_fn.6f5 [concrete]
+// CHECK:STDOUT:   %int_1.f23: %u64 = int_value 1 [concrete]
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: imports {
+// CHECK:STDOUT:   %Core.import_ref.99c: @Core.IntLiteral.as.As.impl.dc4.%Core.IntLiteral.as.As.impl.Convert.type (%Core.IntLiteral.as.As.impl.Convert.type.565) = import_ref Core//prelude/parts/int, loc32_39, loaded [symbolic = @Core.IntLiteral.as.As.impl.dc4.%Core.IntLiteral.as.As.impl.Convert (constants.%Core.IntLiteral.as.As.impl.Convert.d2c)]
+// CHECK:STDOUT:   %As.impl_witness_table.5ad = impl_witness_table (%Core.import_ref.99c), @Core.IntLiteral.as.As.impl.dc4 [concrete]
+// CHECK:STDOUT:   %Core.import_ref.611: @Core.IntLiteral.as.As.impl.cc4.%Core.IntLiteral.as.As.impl.Convert.type (%Core.IntLiteral.as.As.impl.Convert.type.972) = import_ref Core//prelude/parts/uint, loc32_40, loaded [symbolic = @Core.IntLiteral.as.As.impl.cc4.%Core.IntLiteral.as.As.impl.Convert (constants.%Core.IntLiteral.as.As.impl.Convert.276)]
+// CHECK:STDOUT:   %As.impl_witness_table.e4e = impl_witness_table (%Core.import_ref.611), @Core.IntLiteral.as.As.impl.cc4 [concrete]
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: fn @F() {
+// CHECK:STDOUT: !entry:
+// CHECK:STDOUT:   name_binding_decl {
+// CHECK:STDOUT:     %cpp_long.patt: <error> = binding_pattern cpp_long [concrete]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %int_1.loc15: Core.IntLiteral = int_value 1 [concrete = constants.%int_1.5b8]
+// CHECK:STDOUT:   %int_64.loc15: Core.IntLiteral = int_value 64 [concrete = constants.%int_64]
+// CHECK:STDOUT:   %i64.loc15: type = class_type @Int, @Int(constants.%int_64) [concrete = constants.%i64]
+// CHECK:STDOUT:   %impl.elem0.loc15: %.b12 = impl_witness_access constants.%As.impl_witness.4f1, element0 [concrete = constants.%Core.IntLiteral.as.As.impl.Convert.fe2]
+// CHECK:STDOUT:   %bound_method.loc15_31.1: <bound method> = bound_method %int_1.loc15, %impl.elem0.loc15 [concrete = constants.%Core.IntLiteral.as.As.impl.Convert.bound.0c0]
+// CHECK:STDOUT:   %specific_fn.loc15: <specific function> = specific_function %impl.elem0.loc15, @Core.IntLiteral.as.As.impl.Convert.1(constants.%int_64) [concrete = constants.%Core.IntLiteral.as.As.impl.Convert.specific_fn.96b]
+// CHECK:STDOUT:   %bound_method.loc15_31.2: <bound method> = bound_method %int_1.loc15, %specific_fn.loc15 [concrete = constants.%bound_method.b11]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.call.loc15: init %i64 = call %bound_method.loc15_31.2(%int_1.loc15) [concrete = constants.%int_1.41a]
+// CHECK:STDOUT:   %.loc15_31.1: %i64 = value_of_initializer %Core.IntLiteral.as.As.impl.Convert.call.loc15 [concrete = constants.%int_1.41a]
+// CHECK:STDOUT:   %.loc15_31.2: %i64 = converted %int_1.loc15, %.loc15_31.1 [concrete = constants.%int_1.41a]
+// CHECK:STDOUT:   <elided>
+// CHECK:STDOUT:   %cpp_long: <error> = bind_name cpp_long, <error> [concrete = <error>]
+// CHECK:STDOUT:   name_binding_decl {
+// CHECK:STDOUT:     %carbon_long.patt: %pattern_type.95b = binding_pattern carbon_long [concrete]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %cpp_long.ref: <error> = name_ref cpp_long, %cpp_long [concrete = <error>]
+// CHECK:STDOUT:   %.loc16: type = splice_block %i64.loc16 [concrete = constants.%i64] {
+// CHECK:STDOUT:     %int_64.loc16: Core.IntLiteral = int_value 64 [concrete = constants.%int_64]
+// CHECK:STDOUT:     %i64.loc16: type = class_type @Int, @Int(constants.%int_64) [concrete = constants.%i64]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %carbon_long: %i64 = bind_name carbon_long, <error> [concrete = <error>]
+// CHECK:STDOUT:   name_binding_decl {
+// CHECK:STDOUT:     %cpp_unsigned_long.patt: <error> = binding_pattern cpp_unsigned_long [concrete]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %int_1.loc25: Core.IntLiteral = int_value 1 [concrete = constants.%int_1.5b8]
+// CHECK:STDOUT:   %int_64.loc25: Core.IntLiteral = int_value 64 [concrete = constants.%int_64]
+// CHECK:STDOUT:   %u64.loc25: type = class_type @UInt, @UInt(constants.%int_64) [concrete = constants.%u64]
+// CHECK:STDOUT:   %impl.elem0.loc25: %.e88 = impl_witness_access constants.%As.impl_witness.feb, element0 [concrete = constants.%Core.IntLiteral.as.As.impl.Convert.467]
+// CHECK:STDOUT:   %bound_method.loc25_49.1: <bound method> = bound_method %int_1.loc25, %impl.elem0.loc25 [concrete = constants.%Core.IntLiteral.as.As.impl.Convert.bound.fec]
+// CHECK:STDOUT:   %specific_fn.loc25: <specific function> = specific_function %impl.elem0.loc25, @Core.IntLiteral.as.As.impl.Convert.2(constants.%int_64) [concrete = constants.%Core.IntLiteral.as.As.impl.Convert.specific_fn.6f5]
+// CHECK:STDOUT:   %bound_method.loc25_49.2: <bound method> = bound_method %int_1.loc25, %specific_fn.loc25 [concrete = constants.%bound_method.290]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.call.loc25: init %u64 = call %bound_method.loc25_49.2(%int_1.loc25) [concrete = constants.%int_1.f23]
+// CHECK:STDOUT:   %.loc25_49.1: %u64 = value_of_initializer %Core.IntLiteral.as.As.impl.Convert.call.loc25 [concrete = constants.%int_1.f23]
+// CHECK:STDOUT:   %.loc25_49.2: %u64 = converted %int_1.loc25, %.loc25_49.1 [concrete = constants.%int_1.f23]
+// CHECK:STDOUT:   <elided>
+// CHECK:STDOUT:   %cpp_unsigned_long: <error> = bind_name cpp_unsigned_long, <error> [concrete = <error>]
+// CHECK:STDOUT:   name_binding_decl {
+// CHECK:STDOUT:     %carbon_unsigned_long.patt: %pattern_type.157 = binding_pattern carbon_unsigned_long [concrete]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %cpp_unsigned_long.ref: <error> = name_ref cpp_unsigned_long, %cpp_unsigned_long [concrete = <error>]
+// CHECK:STDOUT:   %.loc26: type = splice_block %u64.loc26 [concrete = constants.%u64] {
+// CHECK:STDOUT:     %int_64.loc26: Core.IntLiteral = int_value 64 [concrete = constants.%int_64]
+// CHECK:STDOUT:     %u64.loc26: type = class_type @UInt, @UInt(constants.%int_64) [concrete = constants.%u64]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %carbon_unsigned_long: %u64 = bind_name carbon_unsigned_long, <error> [concrete = <error>]
+// CHECK:STDOUT:   <elided>
+// CHECK:STDOUT: }
+// CHECK:STDOUT:

toolchain/check/testdata/interop/cpp/builtins.lp64.carbon

@@ -0,0 +1,268 @@
+// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
+// Exceptions. See /LICENSE for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+// INCLUDE-FILE: toolchain/testing/testdata/min_prelude/uint.carbon
+// EXTRA-ARGS: --target=x86_64-linux-gnu
+//
+// AUTOUPDATE
+// TIP: To test this file alone, run:
+// TIP:   bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/check/testdata/interop/cpp/builtins.lp64.carbon
+// TIP: To dump output, run:
+// TIP:   bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/interop/cpp/builtins.lp64.carbon
+
+// --- supported_types.carbon
+
+library "[[@TEST_NAME]]";
+
+import Cpp inline "";
+
+fn F() {
+  //@dump-sem-ir-begin
+  let cpp_long : Cpp.long = 1 as i64;
+  let carbon_long: i64 = cpp_long;
+
+  let cpp_unsigned_long : Cpp.unsigned_long = 1 as u64;
+  let carbon_unsigned_long: u64 = cpp_unsigned_long;
+  //@dump-sem-ir-end
+}
+
+// --- fail_todo_unsupported_types.carbon
+
+library "[[@TEST_NAME]]";
+
+import Cpp inline "";
+
+fn F() {
+  //@dump-sem-ir-begin
+  // CHECK:STDERR: fail_todo_unsupported_types.carbon:[[@LINE+7]]:23: error: semantics TODO: `Unsupported: builtin type: long long` [SemanticsTodo]
+  // CHECK:STDERR:   let cpp_long_long : Cpp.long_long = 1 as i64;
+  // CHECK:STDERR:                       ^~~~~~~~~~~~~
+  // CHECK:STDERR: fail_todo_unsupported_types.carbon:[[@LINE+4]]:23: note: in `Cpp` name lookup for `long_long` [InCppNameLookup]
+  // CHECK:STDERR:   let cpp_long_long : Cpp.long_long = 1 as i64;
+  // CHECK:STDERR:                       ^~~~~~~~~~~~~
+  // CHECK:STDERR:
+  let cpp_long_long : Cpp.long_long = 1 as i64;
+  let carbon_long_long: i64 = cpp_long_long;
+
+  // CHECK:STDERR: fail_todo_unsupported_types.carbon:[[@LINE+7]]:32: error: semantics TODO: `Unsupported: builtin type: unsigned long long` [SemanticsTodo]
+  // CHECK:STDERR:   let cpp_unsigned_long_long : Cpp.unsigned_long_long = 1 as u64;
+  // CHECK:STDERR:                                ^~~~~~~~~~~~~~~~~~~~~~
+  // CHECK:STDERR: fail_todo_unsupported_types.carbon:[[@LINE+4]]:32: note: in `Cpp` name lookup for `unsigned_long_long` [InCppNameLookup]
+  // CHECK:STDERR:   let cpp_unsigned_long_long : Cpp.unsigned_long_long = 1 as u64;
+  // CHECK:STDERR:                                ^~~~~~~~~~~~~~~~~~~~~~
+  // CHECK:STDERR:
+  let cpp_unsigned_long_long : Cpp.unsigned_long_long = 1 as u64;
+  let carbon_unsigned_long_long: u64 = cpp_unsigned_long_long;
+  //@dump-sem-ir-end
+}
+
+// CHECK:STDOUT: --- supported_types.carbon
+// CHECK:STDOUT:
+// CHECK:STDOUT: constants {
+// CHECK:STDOUT:   %int_64: Core.IntLiteral = int_value 64 [concrete]
+// CHECK:STDOUT:   %i64: type = class_type @Int, @Int(%int_64) [concrete]
+// CHECK:STDOUT:   %pattern_type.95b: type = pattern_type %i64 [concrete]
+// CHECK:STDOUT:   %int_1.5b8: Core.IntLiteral = int_value 1 [concrete]
+// CHECK:STDOUT:   %As.type.bbb: type = facet_type <@As, @As(%i64)> [concrete]
+// CHECK:STDOUT:   %As.Convert.type.d57: type = fn_type @As.Convert, @As(%i64) [concrete]
+// CHECK:STDOUT:   %To: Core.IntLiteral = bind_symbolic_name To, 0 [symbolic]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.type.565: type = fn_type @Core.IntLiteral.as.As.impl.Convert.1, @Core.IntLiteral.as.As.impl.dc4(%To) [symbolic]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.d2c: %Core.IntLiteral.as.As.impl.Convert.type.565 = struct_value () [symbolic]
+// CHECK:STDOUT:   %As.impl_witness.4f1: <witness> = impl_witness imports.%As.impl_witness_table.5ad, @Core.IntLiteral.as.As.impl.dc4(%int_64) [concrete]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.type.9ac: type = fn_type @Core.IntLiteral.as.As.impl.Convert.1, @Core.IntLiteral.as.As.impl.dc4(%int_64) [concrete]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.fe2: %Core.IntLiteral.as.As.impl.Convert.type.9ac = struct_value () [concrete]
+// CHECK:STDOUT:   %As.facet.888: %As.type.bbb = facet_value Core.IntLiteral, (%As.impl_witness.4f1) [concrete]
+// CHECK:STDOUT:   %.b12: type = fn_type_with_self_type %As.Convert.type.d57, %As.facet.888 [concrete]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.bound.0c0: <bound method> = bound_method %int_1.5b8, %Core.IntLiteral.as.As.impl.Convert.fe2 [concrete]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.specific_fn.96b: <specific function> = specific_function %Core.IntLiteral.as.As.impl.Convert.fe2, @Core.IntLiteral.as.As.impl.Convert.1(%int_64) [concrete]
+// CHECK:STDOUT:   %bound_method.b11: <bound method> = bound_method %int_1.5b8, %Core.IntLiteral.as.As.impl.Convert.specific_fn.96b [concrete]
+// CHECK:STDOUT:   %int_1.41a: %i64 = int_value 1 [concrete]
+// CHECK:STDOUT:   %u64: type = class_type @UInt, @UInt(%int_64) [concrete]
+// CHECK:STDOUT:   %pattern_type.157: type = pattern_type %u64 [concrete]
+// CHECK:STDOUT:   %As.type.465: type = facet_type <@As, @As(%u64)> [concrete]
+// CHECK:STDOUT:   %As.Convert.type.7eb: type = fn_type @As.Convert, @As(%u64) [concrete]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.type.972: type = fn_type @Core.IntLiteral.as.As.impl.Convert.2, @Core.IntLiteral.as.As.impl.cc4(%To) [symbolic]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.276: %Core.IntLiteral.as.As.impl.Convert.type.972 = struct_value () [symbolic]
+// CHECK:STDOUT:   %As.impl_witness.feb: <witness> = impl_witness imports.%As.impl_witness_table.e4e, @Core.IntLiteral.as.As.impl.cc4(%int_64) [concrete]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.type.da0: type = fn_type @Core.IntLiteral.as.As.impl.Convert.2, @Core.IntLiteral.as.As.impl.cc4(%int_64) [concrete]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.467: %Core.IntLiteral.as.As.impl.Convert.type.da0 = struct_value () [concrete]
+// CHECK:STDOUT:   %As.facet.218: %As.type.465 = facet_value Core.IntLiteral, (%As.impl_witness.feb) [concrete]
+// CHECK:STDOUT:   %.e88: type = fn_type_with_self_type %As.Convert.type.7eb, %As.facet.218 [concrete]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.bound.fec: <bound method> = bound_method %int_1.5b8, %Core.IntLiteral.as.As.impl.Convert.467 [concrete]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.specific_fn.6f5: <specific function> = specific_function %Core.IntLiteral.as.As.impl.Convert.467, @Core.IntLiteral.as.As.impl.Convert.2(%int_64) [concrete]
+// CHECK:STDOUT:   %bound_method.290: <bound method> = bound_method %int_1.5b8, %Core.IntLiteral.as.As.impl.Convert.specific_fn.6f5 [concrete]
+// CHECK:STDOUT:   %int_1.f23: %u64 = int_value 1 [concrete]
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: imports {
+// CHECK:STDOUT:   %Cpp: <namespace> = namespace file.%Cpp.import_cpp, [concrete] {
+// CHECK:STDOUT:     .long = @F.%i64.1
+// CHECK:STDOUT:     .unsigned_long = @F.%u64.1
+// CHECK:STDOUT:     import Cpp//...
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %Core.import_ref.99c: @Core.IntLiteral.as.As.impl.dc4.%Core.IntLiteral.as.As.impl.Convert.type (%Core.IntLiteral.as.As.impl.Convert.type.565) = import_ref Core//prelude/parts/int, loc32_39, loaded [symbolic = @Core.IntLiteral.as.As.impl.dc4.%Core.IntLiteral.as.As.impl.Convert (constants.%Core.IntLiteral.as.As.impl.Convert.d2c)]
+// CHECK:STDOUT:   %As.impl_witness_table.5ad = impl_witness_table (%Core.import_ref.99c), @Core.IntLiteral.as.As.impl.dc4 [concrete]
+// CHECK:STDOUT:   %Core.import_ref.611: @Core.IntLiteral.as.As.impl.cc4.%Core.IntLiteral.as.As.impl.Convert.type (%Core.IntLiteral.as.As.impl.Convert.type.972) = import_ref Core//prelude/parts/uint, loc32_40, loaded [symbolic = @Core.IntLiteral.as.As.impl.cc4.%Core.IntLiteral.as.As.impl.Convert (constants.%Core.IntLiteral.as.As.impl.Convert.276)]
+// CHECK:STDOUT:   %As.impl_witness_table.e4e = impl_witness_table (%Core.import_ref.611), @Core.IntLiteral.as.As.impl.cc4 [concrete]
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: fn @F() {
+// CHECK:STDOUT: !entry:
+// CHECK:STDOUT:   name_binding_decl {
+// CHECK:STDOUT:     %cpp_long.patt: %pattern_type.95b = binding_pattern cpp_long [concrete]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %int_1.loc8: Core.IntLiteral = int_value 1 [concrete = constants.%int_1.5b8]
+// CHECK:STDOUT:   %int_64.loc8: Core.IntLiteral = int_value 64 [concrete = constants.%int_64]
+// CHECK:STDOUT:   %i64.loc8: type = class_type @Int, @Int(constants.%int_64) [concrete = constants.%i64]
+// CHECK:STDOUT:   %impl.elem0.loc8: %.b12 = impl_witness_access constants.%As.impl_witness.4f1, element0 [concrete = constants.%Core.IntLiteral.as.As.impl.Convert.fe2]
+// CHECK:STDOUT:   %bound_method.loc8_31.1: <bound method> = bound_method %int_1.loc8, %impl.elem0.loc8 [concrete = constants.%Core.IntLiteral.as.As.impl.Convert.bound.0c0]
+// CHECK:STDOUT:   %specific_fn.loc8: <specific function> = specific_function %impl.elem0.loc8, @Core.IntLiteral.as.As.impl.Convert.1(constants.%int_64) [concrete = constants.%Core.IntLiteral.as.As.impl.Convert.specific_fn.96b]
+// CHECK:STDOUT:   %bound_method.loc8_31.2: <bound method> = bound_method %int_1.loc8, %specific_fn.loc8 [concrete = constants.%bound_method.b11]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.call.loc8: init %i64 = call %bound_method.loc8_31.2(%int_1.loc8) [concrete = constants.%int_1.41a]
+// CHECK:STDOUT:   %.loc8_31.1: %i64 = value_of_initializer %Core.IntLiteral.as.As.impl.Convert.call.loc8 [concrete = constants.%int_1.41a]
+// CHECK:STDOUT:   %.loc8_31.2: %i64 = converted %int_1.loc8, %.loc8_31.1 [concrete = constants.%int_1.41a]
+// CHECK:STDOUT:   %.loc8_21: type = splice_block %long.ref [concrete = constants.%i64] {
+// CHECK:STDOUT:     %Cpp.ref.loc8: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
+// CHECK:STDOUT:     <elided>
+// CHECK:STDOUT:     %long.ref: type = name_ref long, %i64.1 [concrete = constants.%i64]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %cpp_long: %i64 = bind_name cpp_long, %.loc8_31.2
+// CHECK:STDOUT:   name_binding_decl {
+// CHECK:STDOUT:     %carbon_long.patt: %pattern_type.95b = binding_pattern carbon_long [concrete]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %cpp_long.ref: %i64 = name_ref cpp_long, %cpp_long
+// CHECK:STDOUT:   %.loc9: type = splice_block %i64.loc9 [concrete = constants.%i64] {
+// CHECK:STDOUT:     %int_64.loc9: Core.IntLiteral = int_value 64 [concrete = constants.%int_64]
+// CHECK:STDOUT:     %i64.loc9: type = class_type @Int, @Int(constants.%int_64) [concrete = constants.%i64]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %carbon_long: %i64 = bind_name carbon_long, %cpp_long.ref
+// CHECK:STDOUT:   name_binding_decl {
+// CHECK:STDOUT:     %cpp_unsigned_long.patt: %pattern_type.157 = binding_pattern cpp_unsigned_long [concrete]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %int_1.loc11: Core.IntLiteral = int_value 1 [concrete = constants.%int_1.5b8]
+// CHECK:STDOUT:   %int_64.loc11: Core.IntLiteral = int_value 64 [concrete = constants.%int_64]
+// CHECK:STDOUT:   %u64.loc11: type = class_type @UInt, @UInt(constants.%int_64) [concrete = constants.%u64]
+// CHECK:STDOUT:   %impl.elem0.loc11: %.e88 = impl_witness_access constants.%As.impl_witness.feb, element0 [concrete = constants.%Core.IntLiteral.as.As.impl.Convert.467]
+// CHECK:STDOUT:   %bound_method.loc11_49.1: <bound method> = bound_method %int_1.loc11, %impl.elem0.loc11 [concrete = constants.%Core.IntLiteral.as.As.impl.Convert.bound.fec]
+// CHECK:STDOUT:   %specific_fn.loc11: <specific function> = specific_function %impl.elem0.loc11, @Core.IntLiteral.as.As.impl.Convert.2(constants.%int_64) [concrete = constants.%Core.IntLiteral.as.As.impl.Convert.specific_fn.6f5]
+// CHECK:STDOUT:   %bound_method.loc11_49.2: <bound method> = bound_method %int_1.loc11, %specific_fn.loc11 [concrete = constants.%bound_method.290]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.call.loc11: init %u64 = call %bound_method.loc11_49.2(%int_1.loc11) [concrete = constants.%int_1.f23]
+// CHECK:STDOUT:   %.loc11_49.1: %u64 = value_of_initializer %Core.IntLiteral.as.As.impl.Convert.call.loc11 [concrete = constants.%int_1.f23]
+// CHECK:STDOUT:   %.loc11_49.2: %u64 = converted %int_1.loc11, %.loc11_49.1 [concrete = constants.%int_1.f23]
+// CHECK:STDOUT:   %.loc11_30: type = splice_block %unsigned_long.ref [concrete = constants.%u64] {
+// CHECK:STDOUT:     %Cpp.ref.loc11: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
+// CHECK:STDOUT:     <elided>
+// CHECK:STDOUT:     %unsigned_long.ref: type = name_ref unsigned_long, %u64.1 [concrete = constants.%u64]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %cpp_unsigned_long: %u64 = bind_name cpp_unsigned_long, %.loc11_49.2
+// CHECK:STDOUT:   name_binding_decl {
+// CHECK:STDOUT:     %carbon_unsigned_long.patt: %pattern_type.157 = binding_pattern carbon_unsigned_long [concrete]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %cpp_unsigned_long.ref: %u64 = name_ref cpp_unsigned_long, %cpp_unsigned_long
+// CHECK:STDOUT:   %.loc12: type = splice_block %u64.loc12 [concrete = constants.%u64] {
+// CHECK:STDOUT:     %int_64.loc12: Core.IntLiteral = int_value 64 [concrete = constants.%int_64]
+// CHECK:STDOUT:     %u64.loc12: type = class_type @UInt, @UInt(constants.%int_64) [concrete = constants.%u64]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %carbon_unsigned_long: %u64 = bind_name carbon_unsigned_long, %cpp_unsigned_long.ref
+// CHECK:STDOUT:   <elided>
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: --- fail_todo_unsupported_types.carbon
+// CHECK:STDOUT:
+// CHECK:STDOUT: constants {
+// CHECK:STDOUT:   %int_1.5b8: Core.IntLiteral = int_value 1 [concrete]
+// CHECK:STDOUT:   %int_64: Core.IntLiteral = int_value 64 [concrete]
+// CHECK:STDOUT:   %i64: type = class_type @Int, @Int(%int_64) [concrete]
+// CHECK:STDOUT:   %As.type.bbb: type = facet_type <@As, @As(%i64)> [concrete]
+// CHECK:STDOUT:   %As.Convert.type.d57: type = fn_type @As.Convert, @As(%i64) [concrete]
+// CHECK:STDOUT:   %To: Core.IntLiteral = bind_symbolic_name To, 0 [symbolic]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.type.565: type = fn_type @Core.IntLiteral.as.As.impl.Convert.1, @Core.IntLiteral.as.As.impl.dc4(%To) [symbolic]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.d2c: %Core.IntLiteral.as.As.impl.Convert.type.565 = struct_value () [symbolic]
+// CHECK:STDOUT:   %As.impl_witness.4f1: <witness> = impl_witness imports.%As.impl_witness_table.5ad, @Core.IntLiteral.as.As.impl.dc4(%int_64) [concrete]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.type.9ac: type = fn_type @Core.IntLiteral.as.As.impl.Convert.1, @Core.IntLiteral.as.As.impl.dc4(%int_64) [concrete]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.fe2: %Core.IntLiteral.as.As.impl.Convert.type.9ac = struct_value () [concrete]
+// CHECK:STDOUT:   %As.facet.888: %As.type.bbb = facet_value Core.IntLiteral, (%As.impl_witness.4f1) [concrete]
+// CHECK:STDOUT:   %.b12: type = fn_type_with_self_type %As.Convert.type.d57, %As.facet.888 [concrete]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.bound.0c0: <bound method> = bound_method %int_1.5b8, %Core.IntLiteral.as.As.impl.Convert.fe2 [concrete]
+// CHECK:STDOUT:   %pattern_type.95b: type = pattern_type %i64 [concrete]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.specific_fn.96b: <specific function> = specific_function %Core.IntLiteral.as.As.impl.Convert.fe2, @Core.IntLiteral.as.As.impl.Convert.1(%int_64) [concrete]
+// CHECK:STDOUT:   %bound_method.b11: <bound method> = bound_method %int_1.5b8, %Core.IntLiteral.as.As.impl.Convert.specific_fn.96b [concrete]
+// CHECK:STDOUT:   %int_1.41a: %i64 = int_value 1 [concrete]
+// CHECK:STDOUT:   %u64: type = class_type @UInt, @UInt(%int_64) [concrete]
+// CHECK:STDOUT:   %As.type.465: type = facet_type <@As, @As(%u64)> [concrete]
+// CHECK:STDOUT:   %As.Convert.type.7eb: type = fn_type @As.Convert, @As(%u64) [concrete]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.type.972: type = fn_type @Core.IntLiteral.as.As.impl.Convert.2, @Core.IntLiteral.as.As.impl.cc4(%To) [symbolic]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.276: %Core.IntLiteral.as.As.impl.Convert.type.972 = struct_value () [symbolic]
+// CHECK:STDOUT:   %As.impl_witness.feb: <witness> = impl_witness imports.%As.impl_witness_table.e4e, @Core.IntLiteral.as.As.impl.cc4(%int_64) [concrete]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.type.da0: type = fn_type @Core.IntLiteral.as.As.impl.Convert.2, @Core.IntLiteral.as.As.impl.cc4(%int_64) [concrete]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.467: %Core.IntLiteral.as.As.impl.Convert.type.da0 = struct_value () [concrete]
+// CHECK:STDOUT:   %As.facet.218: %As.type.465 = facet_value Core.IntLiteral, (%As.impl_witness.feb) [concrete]
+// CHECK:STDOUT:   %.e88: type = fn_type_with_self_type %As.Convert.type.7eb, %As.facet.218 [concrete]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.bound.fec: <bound method> = bound_method %int_1.5b8, %Core.IntLiteral.as.As.impl.Convert.467 [concrete]
+// CHECK:STDOUT:   %pattern_type.157: type = pattern_type %u64 [concrete]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.specific_fn.6f5: <specific function> = specific_function %Core.IntLiteral.as.As.impl.Convert.467, @Core.IntLiteral.as.As.impl.Convert.2(%int_64) [concrete]
+// CHECK:STDOUT:   %bound_method.290: <bound method> = bound_method %int_1.5b8, %Core.IntLiteral.as.As.impl.Convert.specific_fn.6f5 [concrete]
+// CHECK:STDOUT:   %int_1.f23: %u64 = int_value 1 [concrete]
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: imports {
+// CHECK:STDOUT:   %Core.import_ref.99c: @Core.IntLiteral.as.As.impl.dc4.%Core.IntLiteral.as.As.impl.Convert.type (%Core.IntLiteral.as.As.impl.Convert.type.565) = import_ref Core//prelude/parts/int, loc32_39, loaded [symbolic = @Core.IntLiteral.as.As.impl.dc4.%Core.IntLiteral.as.As.impl.Convert (constants.%Core.IntLiteral.as.As.impl.Convert.d2c)]
+// CHECK:STDOUT:   %As.impl_witness_table.5ad = impl_witness_table (%Core.import_ref.99c), @Core.IntLiteral.as.As.impl.dc4 [concrete]
+// CHECK:STDOUT:   %Core.import_ref.611: @Core.IntLiteral.as.As.impl.cc4.%Core.IntLiteral.as.As.impl.Convert.type (%Core.IntLiteral.as.As.impl.Convert.type.972) = import_ref Core//prelude/parts/uint, loc32_40, loaded [symbolic = @Core.IntLiteral.as.As.impl.cc4.%Core.IntLiteral.as.As.impl.Convert (constants.%Core.IntLiteral.as.As.impl.Convert.276)]
+// CHECK:STDOUT:   %As.impl_witness_table.e4e = impl_witness_table (%Core.import_ref.611), @Core.IntLiteral.as.As.impl.cc4 [concrete]
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: fn @F() {
+// CHECK:STDOUT: !entry:
+// CHECK:STDOUT:   name_binding_decl {
+// CHECK:STDOUT:     %cpp_long_long.patt: <error> = binding_pattern cpp_long_long [concrete]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %int_1.loc15: Core.IntLiteral = int_value 1 [concrete = constants.%int_1.5b8]
+// CHECK:STDOUT:   %int_64.loc15: Core.IntLiteral = int_value 64 [concrete = constants.%int_64]
+// CHECK:STDOUT:   %i64.loc15: type = class_type @Int, @Int(constants.%int_64) [concrete = constants.%i64]
+// CHECK:STDOUT:   %impl.elem0.loc15: %.b12 = impl_witness_access constants.%As.impl_witness.4f1, element0 [concrete = constants.%Core.IntLiteral.as.As.impl.Convert.fe2]
+// CHECK:STDOUT:   %bound_method.loc15_41.1: <bound method> = bound_method %int_1.loc15, %impl.elem0.loc15 [concrete = constants.%Core.IntLiteral.as.As.impl.Convert.bound.0c0]
+// CHECK:STDOUT:   %specific_fn.loc15: <specific function> = specific_function %impl.elem0.loc15, @Core.IntLiteral.as.As.impl.Convert.1(constants.%int_64) [concrete = constants.%Core.IntLiteral.as.As.impl.Convert.specific_fn.96b]
+// CHECK:STDOUT:   %bound_method.loc15_41.2: <bound method> = bound_method %int_1.loc15, %specific_fn.loc15 [concrete = constants.%bound_method.b11]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.call.loc15: init %i64 = call %bound_method.loc15_41.2(%int_1.loc15) [concrete = constants.%int_1.41a]
+// CHECK:STDOUT:   %.loc15_41.1: %i64 = value_of_initializer %Core.IntLiteral.as.As.impl.Convert.call.loc15 [concrete = constants.%int_1.41a]
+// CHECK:STDOUT:   %.loc15_41.2: %i64 = converted %int_1.loc15, %.loc15_41.1 [concrete = constants.%int_1.41a]
+// CHECK:STDOUT:   <elided>
+// CHECK:STDOUT:   %cpp_long_long: <error> = bind_name cpp_long_long, <error> [concrete = <error>]
+// CHECK:STDOUT:   name_binding_decl {
+// CHECK:STDOUT:     %carbon_long_long.patt: %pattern_type.95b = binding_pattern carbon_long_long [concrete]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %cpp_long_long.ref: <error> = name_ref cpp_long_long, %cpp_long_long [concrete = <error>]
+// CHECK:STDOUT:   %.loc16: type = splice_block %i64.loc16 [concrete = constants.%i64] {
+// CHECK:STDOUT:     %int_64.loc16: Core.IntLiteral = int_value 64 [concrete = constants.%int_64]
+// CHECK:STDOUT:     %i64.loc16: type = class_type @Int, @Int(constants.%int_64) [concrete = constants.%i64]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %carbon_long_long: %i64 = bind_name carbon_long_long, <error> [concrete = <error>]
+// CHECK:STDOUT:   name_binding_decl {
+// CHECK:STDOUT:     %cpp_unsigned_long_long.patt: <error> = binding_pattern cpp_unsigned_long_long [concrete]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %int_1.loc25: Core.IntLiteral = int_value 1 [concrete = constants.%int_1.5b8]
+// CHECK:STDOUT:   %int_64.loc25: Core.IntLiteral = int_value 64 [concrete = constants.%int_64]
+// CHECK:STDOUT:   %u64.loc25: type = class_type @UInt, @UInt(constants.%int_64) [concrete = constants.%u64]
+// CHECK:STDOUT:   %impl.elem0.loc25: %.e88 = impl_witness_access constants.%As.impl_witness.feb, element0 [concrete = constants.%Core.IntLiteral.as.As.impl.Convert.467]
+// CHECK:STDOUT:   %bound_method.loc25_59.1: <bound method> = bound_method %int_1.loc25, %impl.elem0.loc25 [concrete = constants.%Core.IntLiteral.as.As.impl.Convert.bound.fec]
+// CHECK:STDOUT:   %specific_fn.loc25: <specific function> = specific_function %impl.elem0.loc25, @Core.IntLiteral.as.As.impl.Convert.2(constants.%int_64) [concrete = constants.%Core.IntLiteral.as.As.impl.Convert.specific_fn.6f5]
+// CHECK:STDOUT:   %bound_method.loc25_59.2: <bound method> = bound_method %int_1.loc25, %specific_fn.loc25 [concrete = constants.%bound_method.290]
+// CHECK:STDOUT:   %Core.IntLiteral.as.As.impl.Convert.call.loc25: init %u64 = call %bound_method.loc25_59.2(%int_1.loc25) [concrete = constants.%int_1.f23]
+// CHECK:STDOUT:   %.loc25_59.1: %u64 = value_of_initializer %Core.IntLiteral.as.As.impl.Convert.call.loc25 [concrete = constants.%int_1.f23]
+// CHECK:STDOUT:   %.loc25_59.2: %u64 = converted %int_1.loc25, %.loc25_59.1 [concrete = constants.%int_1.f23]
+// CHECK:STDOUT:   <elided>
+// CHECK:STDOUT:   %cpp_unsigned_long_long: <error> = bind_name cpp_unsigned_long_long, <error> [concrete = <error>]
+// CHECK:STDOUT:   name_binding_decl {
+// CHECK:STDOUT:     %carbon_unsigned_long_long.patt: %pattern_type.157 = binding_pattern carbon_unsigned_long_long [concrete]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %cpp_unsigned_long_long.ref: <error> = name_ref cpp_unsigned_long_long, %cpp_unsigned_long_long [concrete = <error>]
+// CHECK:STDOUT:   %.loc26: type = splice_block %u64.loc26 [concrete = constants.%u64] {
+// CHECK:STDOUT:     %int_64.loc26: Core.IntLiteral = int_value 64 [concrete = constants.%int_64]
+// CHECK:STDOUT:     %u64.loc26: type = class_type @UInt, @UInt(constants.%int_64) [concrete = constants.%u64]
+// CHECK:STDOUT:   }
+// CHECK:STDOUT:   %carbon_unsigned_long_long: %u64 = bind_name carbon_unsigned_long_long, <error> [concrete = <error>]
+// CHECK:STDOUT:   <elided>
+// CHECK:STDOUT: }
+// CHECK:STDOUT: