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C++ interop: Support C++20 operator and overload resolution for expression rewriting (#6171)

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This allows to find the spaceship `operator<=>` when a comparison
operator is not available, and `operator==` when `operator!=` is not
available.
Support added to both lookup and overload resolution, by adding
`OperatorRewriteInfo` and propagating it in `CppOverloadSet`.
In case overload resolution chooses to use an operator which requires
rewriting, we emit a `TODO` since rewriting is not yet supported.

Part of #6170.
This commit is contained in:
Boaz Brickner
2025-10-08 06:28:50 +00:00
committed by GitHub
parent c9bb6b11a4
commit 7c13bddc92
7 changed files with 419 additions and 17 deletions
Download Patch File Download Diff File Expand all files Collapse all files
toolchain/check/cpp/import.cpp
+8 -6
View File
@@ -2060,16 +2060,17 @@ static auto LookupBuiltinTypes(Context& context, SemIR::LocId loc_id,
return inst_id;
}
auto ImportCppOverloadSet(Context& context, SemIR::NameScopeId scope_id,
SemIR::NameId name_id,
clang::CXXRecordDecl* naming_class,
clang::UnresolvedSet<4>&& overload_set)
auto ImportCppOverloadSet(
Context& context, SemIR::NameScopeId scope_id, SemIR::NameId name_id,
clang::CXXRecordDecl* naming_class, clang::UnresolvedSet<4>&& overload_set,
clang::OverloadCandidateSet::OperatorRewriteInfo operator_rewrite_info)
-> SemIR::InstId {
SemIR::CppOverloadSetId overload_set_id = context.cpp_overload_sets().Add(
SemIR::CppOverloadSet{.name_id = name_id,
.parent_scope_id = scope_id,
.naming_class = naming_class,
.candidate_functions = std::move(overload_set)});
.candidate_functions = std::move(overload_set),
.operator_rewrite_info = operator_rewrite_info});
auto overload_set_inst_id =
// TODO: Add a location.
@@ -2110,7 +2111,8 @@ static auto ImportOverloadSetIntoScope(Context& context,
-> SemIR::ScopeLookupResult {
SemIR::AccessKind access_kind = GetOverloadSetAccess(overload_set);
SemIR::InstId inst_id = ImportCppOverloadSet(
context, scope_id, name_id, naming_class, std::move(overload_set));
context, scope_id, name_id, naming_class, std::move(overload_set),
/*operator_rewrite_info=*/{});
AddNameToScope(context, scope_id, name_id, access_kind, inst_id);
return SemIR::ScopeLookupResult::MakeWrappedLookupResult(inst_id,
access_kind);
toolchain/check/cpp/import.h
+4 -4
View File
@@ -32,10 +32,10 @@ auto ImportCppFunctionDecl(Context& context, SemIR::LocId loc_id,
-> SemIR::InstId;
// Imports an overloaded function set from Clang to Carbon.
auto ImportCppOverloadSet(Context& context, SemIR::NameScopeId scope_id,
SemIR::NameId name_id,
clang::CXXRecordDecl* naming_class,
clang::UnresolvedSet<4>&& overload_set)
auto ImportCppOverloadSet(
Context& context, SemIR::NameScopeId scope_id, SemIR::NameId name_id,
clang::CXXRecordDecl* naming_class, clang::UnresolvedSet<4>&& overload_set,
clang::OverloadCandidateSet::OperatorRewriteInfo operator_rewrite_info)
-> SemIR::InstId;
// Looks up the given name in the Clang AST generated when importing C++ code
toolchain/check/cpp/operators.cpp
+7 -5
View File
@@ -190,10 +190,12 @@ auto LookupCppOperator(Context& context, SemIR::LocId loc_id, Operator op,
return SemIR::ErrorInst::InstId;
}
clang::SourceLocation loc = GetCppLocation(context, loc_id);
clang::OverloadCandidateSet::OperatorRewriteInfo operator_rewrite_info(
*op_kind, loc, /*AllowRewritten=*/true);
clang::UnresolvedSet<4> functions;
clang::OverloadCandidateSet candidate_set(
GetCppLocation(context, loc_id),
clang::OverloadCandidateSet::CSK_Operator);
loc, clang::OverloadCandidateSet::CSK_Operator, operator_rewrite_info);
// This works for both unary and binary operators.
context.clang_sema().LookupOverloadedBinOp(candidate_set, *op_kind, functions,
*arg_exprs);
@@ -205,9 +207,9 @@ auto LookupCppOperator(Context& context, SemIR::LocId loc_id, Operator op,
functions.addDecl(it.Function, it.FoundDecl.getAccess());
}
return ImportCppOverloadSet(context, SemIR::NameScopeId::None,
SemIR::NameId::CppOperator,
/*naming_class=*/nullptr, std::move(functions));
return ImportCppOverloadSet(
context, SemIR::NameScopeId::None, SemIR::NameId::CppOperator,
/*naming_class=*/nullptr, std::move(functions), operator_rewrite_info);
}
auto IsCppOperatorMethodDecl(clang::Decl* decl) -> bool {
toolchain/check/cpp/overload_resolution.cpp
+14 -1
View File
@@ -149,7 +149,11 @@ auto PerformCppOverloadResolution(Context& context, SemIR::LocId loc_id,
// Add candidate functions from the name lookup.
clang::OverloadCandidateSet candidate_set(
loc, clang::OverloadCandidateSet::CandidateSetKind::CSK_Normal);
loc,
overload_set.operator_rewrite_info.OriginalOperator
? clang::OverloadCandidateSet::CandidateSetKind::CSK_Operator
: clang::OverloadCandidateSet::CandidateSetKind::CSK_Normal,
overload_set.operator_rewrite_info);
clang::Sema& sema = context.clang_sema();
@@ -165,6 +169,15 @@ auto PerformCppOverloadResolution(Context& context, SemIR::LocId loc_id,
case clang::OverloadingResult::OR_Success: {
// TODO: Handle the cases when Function is null.
CARBON_CHECK(best_viable_fn->Function);
if (best_viable_fn->RewriteKind) {
context.TODO(
loc_id,
llvm::formatv("Rewriting operator{0} using {1} is not supported",
clang::getOperatorSpelling(
candidate_set.getRewriteInfo().OriginalOperator),
best_viable_fn->Function->getNameAsString()));
return SemIR::ErrorInst::InstId;
}
sema.MarkFunctionReferenced(loc, best_viable_fn->Function);
SemIR::InstId result_id = ImportCppFunctionDecl(
context, loc_id, best_viable_fn->Function,
toolchain/check/testdata/interop/cpp/function/operators.carbon
Vendored
+380 -1
View File
@@ -3,7 +3,7 @@
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
// INCLUDE-FILE: toolchain/testing/testdata/min_prelude/full.carbon
// EXTRA-ARGS: --target=x86_64-linux-gnu
// EXTRA-ARGS: --target=x86_64-linux-gnu --clang-arg=-std=c++20
//
// AUTOUPDATE
// TIP: To test this file alone, run:
@@ -252,6 +252,81 @@ fn F() {
let c3: Cpp.C = 6 + c1;
}
// ============================================================================
// Rewrite using the spaceship operator
// ============================================================================
// --- fail_todo_rewrite_spaceship.carbon
library "[[@TEST_NAME]]";
import Cpp inline '''
class C {};
namespace std { class strong_ordering {}; }
auto operator<=>(C lhs, C rhs) -> std::strong_ordering;
auto operator>(C lhs, C rhs) -> bool;
auto operator<=(C lhs, C rhs) -> bool;
''';
fn F() {
//@dump-sem-ir-begin
var c1: Cpp.C = Cpp.C.C();
var c2: Cpp.C = Cpp.C.C();
// No rewrite.
let greater_than: bool = c1 > c2;
// Rewrite.
// CHECK:STDERR: fail_todo_rewrite_spaceship.carbon:[[@LINE+4]]:25: error: semantics TODO: `Rewriting operator< using operator<=> is not supported` [SemanticsTodo]
// CHECK:STDERR: let less_than: bool = c1 < c2;
// CHECK:STDERR: ^~~~~~~
// CHECK:STDERR:
let less_than: bool = c1 < c2;
// Rewrite.
// CHECK:STDERR: fail_todo_rewrite_spaceship.carbon:[[@LINE+4]]:37: error: semantics TODO: `Rewriting operator>= using operator<=> is not supported` [SemanticsTodo]
// CHECK:STDERR: let greater_than_or_equal: bool = c1 >= c2;
// CHECK:STDERR: ^~~~~~~~
// CHECK:STDERR:
let greater_than_or_equal: bool = c1 >= c2;
// No rewrite.
let less_than_or_equal: bool = c1 <= c2;
//@dump-sem-ir-end
}
// ============================================================================
// Rewrite using the equal operator
// ============================================================================
// --- fail_todo_rewrite_equal.carbon
library "[[@TEST_NAME]]";
import Cpp inline '''
class C {};
auto operator==(C lhs, C rhs) -> bool;
''';
fn F() {
//@dump-sem-ir-begin
var c1: Cpp.C = Cpp.C.C();
var c2: Cpp.C = Cpp.C.C();
// No rewrite.
let equal: bool = c1 == c2;
// Rewrite.
// CHECK:STDERR: fail_todo_rewrite_equal.carbon:[[@LINE+4]]:25: error: semantics TODO: `Rewriting operator!= using operator== is not supported` [SemanticsTodo]
// CHECK:STDERR: let not_equal: bool = c1 != c2;
// CHECK:STDERR: ^~~~~~~~
// CHECK:STDERR:
let not_equal: bool = c1 != c2;
//@dump-sem-ir-end
}
// ============================================================================
// One of two operands conversion
// ============================================================================
@@ -663,6 +738,7 @@ fn F() {
let c3: Cpp.N.O.C = c1 + c2;
//@dump-sem-ir-end
}
// ============================================================================
// Member operator
// ============================================================================
@@ -2118,6 +2194,309 @@ fn F() {
// CHECK:STDOUT: <elided>
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: --- fail_todo_rewrite_spaceship.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %empty_tuple.type: type = tuple_type () [concrete]
// CHECK:STDOUT: %C: type = class_type @C [concrete]
// CHECK:STDOUT: %pattern_type.217: type = pattern_type %C [concrete]
// CHECK:STDOUT: %C.C.cpp_overload_set.type: type = cpp_overload_set_type @C.C.cpp_overload_set [concrete]
// CHECK:STDOUT: %C.C.cpp_overload_set.value: %C.C.cpp_overload_set.type = cpp_overload_set_value @C.C.cpp_overload_set [concrete]
// CHECK:STDOUT: %ptr.d9e: type = ptr_type %C [concrete]
// CHECK:STDOUT: %C__carbon_thunk.type: type = fn_type @C__carbon_thunk [concrete]
// CHECK:STDOUT: %C__carbon_thunk: %C__carbon_thunk.type = struct_value () [concrete]
// CHECK:STDOUT: %Bool.type: type = fn_type @Bool [concrete]
// CHECK:STDOUT: %Bool: %Bool.type = struct_value () [concrete]
// CHECK:STDOUT: %pattern_type.831: type = pattern_type bool [concrete]
// CHECK:STDOUT: %ptr.bb2: type = ptr_type bool [concrete]
// CHECK:STDOUT: %operator>__carbon_thunk.type: type = fn_type @operator>__carbon_thunk [concrete]
// CHECK:STDOUT: %operator>__carbon_thunk: %operator>__carbon_thunk.type = struct_value () [concrete]
// CHECK:STDOUT: %operator<=__carbon_thunk.type: type = fn_type @operator<=__carbon_thunk [concrete]
// CHECK:STDOUT: %operator<=__carbon_thunk: %operator<=__carbon_thunk.type = struct_value () [concrete]
// CHECK:STDOUT: %type_where: type = facet_type <type where .Self impls <CanDestroy>> [concrete]
// CHECK:STDOUT: %facet_value: %type_where = facet_value %C, () [concrete]
// CHECK:STDOUT: %DestroyT.binding.as_type.as.Destroy.impl.Op.type.b92: type = fn_type @DestroyT.binding.as_type.as.Destroy.impl.Op, @DestroyT.binding.as_type.as.Destroy.impl(%facet_value) [concrete]
// CHECK:STDOUT: %DestroyT.binding.as_type.as.Destroy.impl.Op.841: %DestroyT.binding.as_type.as.Destroy.impl.Op.type.b92 = struct_value () [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Cpp: <namespace> = namespace file.%Cpp.import_cpp, [concrete] {
// CHECK:STDOUT: .C = %C.decl
// CHECK:STDOUT: import Cpp//...
// CHECK:STDOUT: }
// CHECK:STDOUT: %C.decl: type = class_decl @C [concrete = constants.%C] {} {}
// CHECK:STDOUT: %C.C.cpp_overload_set.value: %C.C.cpp_overload_set.type = cpp_overload_set_value @C.C.cpp_overload_set [concrete = constants.%C.C.cpp_overload_set.value]
// CHECK:STDOUT: %C__carbon_thunk.decl: %C__carbon_thunk.type = fn_decl @C__carbon_thunk [concrete = constants.%C__carbon_thunk] {
// CHECK:STDOUT: <elided>
// CHECK:STDOUT: } {
// CHECK:STDOUT: <elided>
// CHECK:STDOUT: }
// CHECK:STDOUT: %operator>__carbon_thunk.decl: %operator>__carbon_thunk.type = fn_decl @operator>__carbon_thunk [concrete = constants.%operator>__carbon_thunk] {
// CHECK:STDOUT: <elided>
// CHECK:STDOUT: } {
// CHECK:STDOUT: <elided>
// CHECK:STDOUT: }
// CHECK:STDOUT: %operator<=__carbon_thunk.decl: %operator<=__carbon_thunk.type = fn_decl @operator<=__carbon_thunk [concrete = constants.%operator<=__carbon_thunk] {
// 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: %c1.patt: %pattern_type.217 = binding_pattern c1 [concrete]
// CHECK:STDOUT: %c1.var_patt: %pattern_type.217 = var_pattern %c1.patt [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT: %c1.var: ref %C = var %c1.var_patt
// CHECK:STDOUT: %Cpp.ref.loc15_19: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
// CHECK:STDOUT: %C.ref.loc15_22: type = name_ref C, imports.%C.decl [concrete = constants.%C]
// CHECK:STDOUT: %C.ref.loc15_24: %C.C.cpp_overload_set.type = name_ref C, imports.%C.C.cpp_overload_set.value [concrete = constants.%C.C.cpp_overload_set.value]
// CHECK:STDOUT: %.loc15_3.1: ref %C = splice_block %c1.var {}
// CHECK:STDOUT: %addr.loc15_27: %ptr.d9e = addr_of %.loc15_3.1
// CHECK:STDOUT: %C__carbon_thunk.call.loc15: init %empty_tuple.type = call imports.%C__carbon_thunk.decl(%addr.loc15_27)
// CHECK:STDOUT: %.loc15_27: init %C = in_place_init %C__carbon_thunk.call.loc15, %.loc15_3.1
// CHECK:STDOUT: assign %c1.var, %.loc15_27
// CHECK:STDOUT: %.loc15_14: type = splice_block %C.ref.loc15_14 [concrete = constants.%C] {
// CHECK:STDOUT: %Cpp.ref.loc15_11: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
// CHECK:STDOUT: %C.ref.loc15_14: type = name_ref C, imports.%C.decl [concrete = constants.%C]
// CHECK:STDOUT: }
// CHECK:STDOUT: %c1: ref %C = bind_name c1, %c1.var
// CHECK:STDOUT: name_binding_decl {
// CHECK:STDOUT: %c2.patt: %pattern_type.217 = binding_pattern c2 [concrete]
// CHECK:STDOUT: %c2.var_patt: %pattern_type.217 = var_pattern %c2.patt [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT: %c2.var: ref %C = var %c2.var_patt
// CHECK:STDOUT: %Cpp.ref.loc16_19: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
// CHECK:STDOUT: %C.ref.loc16_22: type = name_ref C, imports.%C.decl [concrete = constants.%C]
// CHECK:STDOUT: %C.ref.loc16_24: %C.C.cpp_overload_set.type = name_ref C, imports.%C.C.cpp_overload_set.value [concrete = constants.%C.C.cpp_overload_set.value]
// CHECK:STDOUT: %.loc16_3.1: ref %C = splice_block %c2.var {}
// CHECK:STDOUT: %addr.loc16_27: %ptr.d9e = addr_of %.loc16_3.1
// CHECK:STDOUT: %C__carbon_thunk.call.loc16: init %empty_tuple.type = call imports.%C__carbon_thunk.decl(%addr.loc16_27)
// CHECK:STDOUT: %.loc16_27: init %C = in_place_init %C__carbon_thunk.call.loc16, %.loc16_3.1
// CHECK:STDOUT: assign %c2.var, %.loc16_27
// CHECK:STDOUT: %.loc16_14: type = splice_block %C.ref.loc16_14 [concrete = constants.%C] {
// CHECK:STDOUT: %Cpp.ref.loc16_11: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
// CHECK:STDOUT: %C.ref.loc16_14: type = name_ref C, imports.%C.decl [concrete = constants.%C]
// CHECK:STDOUT: }
// CHECK:STDOUT: %c2: ref %C = bind_name c2, %c2.var
// CHECK:STDOUT: name_binding_decl {
// CHECK:STDOUT: %greater_than.patt: %pattern_type.831 = binding_pattern greater_than [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT: %c1.ref.loc19: ref %C = name_ref c1, %c1
// CHECK:STDOUT: %c2.ref.loc19: ref %C = name_ref c2, %c2
// CHECK:STDOUT: %.loc19_28.1: %C = bind_value %c1.ref.loc19
// CHECK:STDOUT: %.loc19_33.1: %C = bind_value %c2.ref.loc19
// CHECK:STDOUT: %.loc19_28.2: ref %C = value_as_ref %.loc19_28.1
// CHECK:STDOUT: %addr.loc19_31.1: %ptr.d9e = addr_of %.loc19_28.2
// CHECK:STDOUT: %.loc19_33.2: ref %C = value_as_ref %.loc19_33.1
// CHECK:STDOUT: %addr.loc19_31.2: %ptr.d9e = addr_of %.loc19_33.2
// CHECK:STDOUT: %.loc19_31.1: ref bool = temporary_storage
// CHECK:STDOUT: %addr.loc19_31.3: %ptr.bb2 = addr_of %.loc19_31.1
// CHECK:STDOUT: %operator>__carbon_thunk.call: init %empty_tuple.type = call imports.%operator>__carbon_thunk.decl(%addr.loc19_31.1, %addr.loc19_31.2, %addr.loc19_31.3)
// CHECK:STDOUT: %.loc19_31.2: init bool = in_place_init %operator>__carbon_thunk.call, %.loc19_31.1
// CHECK:STDOUT: %.loc19_21.1: type = splice_block %.loc19_21.3 [concrete = bool] {
// CHECK:STDOUT: %Bool.call.loc19: init type = call constants.%Bool() [concrete = bool]
// CHECK:STDOUT: %.loc19_21.2: type = value_of_initializer %Bool.call.loc19 [concrete = bool]
// CHECK:STDOUT: %.loc19_21.3: type = converted %Bool.call.loc19, %.loc19_21.2 [concrete = bool]
// CHECK:STDOUT: }
// CHECK:STDOUT: %.loc19_31.3: bool = value_of_initializer %.loc19_31.2
// CHECK:STDOUT: %.loc19_31.4: bool = converted %.loc19_31.2, %.loc19_31.3
// CHECK:STDOUT: %greater_than: bool = bind_name greater_than, %.loc19_31.4
// CHECK:STDOUT: name_binding_decl {
// CHECK:STDOUT: %less_than.patt: %pattern_type.831 = binding_pattern less_than [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT: %c1.ref.loc26: ref %C = name_ref c1, %c1
// CHECK:STDOUT: %c2.ref.loc26: ref %C = name_ref c2, %c2
// CHECK:STDOUT: %.loc26_18.1: type = splice_block %.loc26_18.3 [concrete = bool] {
// CHECK:STDOUT: %Bool.call.loc26: init type = call constants.%Bool() [concrete = bool]
// CHECK:STDOUT: %.loc26_18.2: type = value_of_initializer %Bool.call.loc26 [concrete = bool]
// CHECK:STDOUT: %.loc26_18.3: type = converted %Bool.call.loc26, %.loc26_18.2 [concrete = bool]
// CHECK:STDOUT: }
// CHECK:STDOUT: %less_than: bool = bind_name less_than, <error> [concrete = <error>]
// CHECK:STDOUT: name_binding_decl {
// CHECK:STDOUT: %greater_than_or_equal.patt: %pattern_type.831 = binding_pattern greater_than_or_equal [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT: %c1.ref.loc33: ref %C = name_ref c1, %c1
// CHECK:STDOUT: %c2.ref.loc33: ref %C = name_ref c2, %c2
// CHECK:STDOUT: %.loc33_30.1: type = splice_block %.loc33_30.3 [concrete = bool] {
// CHECK:STDOUT: %Bool.call.loc33: init type = call constants.%Bool() [concrete = bool]
// CHECK:STDOUT: %.loc33_30.2: type = value_of_initializer %Bool.call.loc33 [concrete = bool]
// CHECK:STDOUT: %.loc33_30.3: type = converted %Bool.call.loc33, %.loc33_30.2 [concrete = bool]
// CHECK:STDOUT: }
// CHECK:STDOUT: %greater_than_or_equal: bool = bind_name greater_than_or_equal, <error> [concrete = <error>]
// CHECK:STDOUT: name_binding_decl {
// CHECK:STDOUT: %less_than_or_equal.patt: %pattern_type.831 = binding_pattern less_than_or_equal [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT: %c1.ref.loc36: ref %C = name_ref c1, %c1
// CHECK:STDOUT: %c2.ref.loc36: ref %C = name_ref c2, %c2
// CHECK:STDOUT: %.loc36_34.1: %C = bind_value %c1.ref.loc36
// CHECK:STDOUT: %.loc36_40.1: %C = bind_value %c2.ref.loc36
// CHECK:STDOUT: %.loc36_34.2: ref %C = value_as_ref %.loc36_34.1
// CHECK:STDOUT: %addr.loc36_37.1: %ptr.d9e = addr_of %.loc36_34.2
// CHECK:STDOUT: %.loc36_40.2: ref %C = value_as_ref %.loc36_40.1
// CHECK:STDOUT: %addr.loc36_37.2: %ptr.d9e = addr_of %.loc36_40.2
// CHECK:STDOUT: %.loc36_37.1: ref bool = temporary_storage
// CHECK:STDOUT: %addr.loc36_37.3: %ptr.bb2 = addr_of %.loc36_37.1
// CHECK:STDOUT: %operator<=__carbon_thunk.call: init %empty_tuple.type = call imports.%operator<=__carbon_thunk.decl(%addr.loc36_37.1, %addr.loc36_37.2, %addr.loc36_37.3)
// CHECK:STDOUT: %.loc36_37.2: init bool = in_place_init %operator<=__carbon_thunk.call, %.loc36_37.1
// CHECK:STDOUT: %.loc36_27.1: type = splice_block %.loc36_27.3 [concrete = bool] {
// CHECK:STDOUT: %Bool.call.loc36: init type = call constants.%Bool() [concrete = bool]
// CHECK:STDOUT: %.loc36_27.2: type = value_of_initializer %Bool.call.loc36 [concrete = bool]
// CHECK:STDOUT: %.loc36_27.3: type = converted %Bool.call.loc36, %.loc36_27.2 [concrete = bool]
// CHECK:STDOUT: }
// CHECK:STDOUT: %.loc36_37.3: bool = value_of_initializer %.loc36_37.2
// CHECK:STDOUT: %.loc36_37.4: bool = converted %.loc36_37.2, %.loc36_37.3
// CHECK:STDOUT: %less_than_or_equal: bool = bind_name less_than_or_equal, %.loc36_37.4
// CHECK:STDOUT: %facet_value.loc16: %type_where = facet_value constants.%C, () [concrete = constants.%facet_value]
// CHECK:STDOUT: %.loc16_3.2: %type_where = converted constants.%C, %facet_value.loc16 [concrete = constants.%facet_value]
// CHECK:STDOUT: %DestroyT.binding.as_type.as.Destroy.impl.Op.bound.loc16: <bound method> = bound_method %c2.var, constants.%DestroyT.binding.as_type.as.Destroy.impl.Op.841
// CHECK:STDOUT: <elided>
// CHECK:STDOUT: %bound_method.loc16: <bound method> = bound_method %c2.var, %DestroyT.binding.as_type.as.Destroy.impl.Op.specific_fn.1
// CHECK:STDOUT: %addr.loc16_3: %ptr.d9e = addr_of %c2.var
// CHECK:STDOUT: %DestroyT.binding.as_type.as.Destroy.impl.Op.call.loc16: init %empty_tuple.type = call %bound_method.loc16(%addr.loc16_3)
// CHECK:STDOUT: %facet_value.loc15: %type_where = facet_value constants.%C, () [concrete = constants.%facet_value]
// CHECK:STDOUT: %.loc15_3.2: %type_where = converted constants.%C, %facet_value.loc15 [concrete = constants.%facet_value]
// CHECK:STDOUT: %DestroyT.binding.as_type.as.Destroy.impl.Op.bound.loc15: <bound method> = bound_method %c1.var, constants.%DestroyT.binding.as_type.as.Destroy.impl.Op.841
// CHECK:STDOUT: <elided>
// CHECK:STDOUT: %bound_method.loc15: <bound method> = bound_method %c1.var, %DestroyT.binding.as_type.as.Destroy.impl.Op.specific_fn.2
// CHECK:STDOUT: %addr.loc15_3: %ptr.d9e = addr_of %c1.var
// CHECK:STDOUT: %DestroyT.binding.as_type.as.Destroy.impl.Op.call.loc15: init %empty_tuple.type = call %bound_method.loc15(%addr.loc15_3)
// CHECK:STDOUT: <elided>
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: --- fail_todo_rewrite_equal.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %empty_tuple.type: type = tuple_type () [concrete]
// CHECK:STDOUT: %C: type = class_type @C [concrete]
// CHECK:STDOUT: %pattern_type.217: type = pattern_type %C [concrete]
// CHECK:STDOUT: %C.C.cpp_overload_set.type: type = cpp_overload_set_type @C.C.cpp_overload_set [concrete]
// CHECK:STDOUT: %C.C.cpp_overload_set.value: %C.C.cpp_overload_set.type = cpp_overload_set_value @C.C.cpp_overload_set [concrete]
// CHECK:STDOUT: %ptr.d9e: type = ptr_type %C [concrete]
// CHECK:STDOUT: %C__carbon_thunk.type: type = fn_type @C__carbon_thunk [concrete]
// CHECK:STDOUT: %C__carbon_thunk: %C__carbon_thunk.type = struct_value () [concrete]
// CHECK:STDOUT: %Bool.type: type = fn_type @Bool [concrete]
// CHECK:STDOUT: %Bool: %Bool.type = struct_value () [concrete]
// CHECK:STDOUT: %pattern_type.831: type = pattern_type bool [concrete]
// CHECK:STDOUT: %ptr.bb2: type = ptr_type bool [concrete]
// CHECK:STDOUT: %operator==__carbon_thunk.type: type = fn_type @operator==__carbon_thunk [concrete]
// CHECK:STDOUT: %operator==__carbon_thunk: %operator==__carbon_thunk.type = struct_value () [concrete]
// CHECK:STDOUT: %type_where: type = facet_type <type where .Self impls <CanDestroy>> [concrete]
// CHECK:STDOUT: %facet_value: %type_where = facet_value %C, () [concrete]
// CHECK:STDOUT: %DestroyT.binding.as_type.as.Destroy.impl.Op.type.b92: type = fn_type @DestroyT.binding.as_type.as.Destroy.impl.Op, @DestroyT.binding.as_type.as.Destroy.impl(%facet_value) [concrete]
// CHECK:STDOUT: %DestroyT.binding.as_type.as.Destroy.impl.Op.841: %DestroyT.binding.as_type.as.Destroy.impl.Op.type.b92 = struct_value () [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Cpp: <namespace> = namespace file.%Cpp.import_cpp, [concrete] {
// CHECK:STDOUT: .C = %C.decl
// CHECK:STDOUT: import Cpp//...
// CHECK:STDOUT: }
// CHECK:STDOUT: %C.decl: type = class_decl @C [concrete = constants.%C] {} {}
// CHECK:STDOUT: %C.C.cpp_overload_set.value: %C.C.cpp_overload_set.type = cpp_overload_set_value @C.C.cpp_overload_set [concrete = constants.%C.C.cpp_overload_set.value]
// CHECK:STDOUT: %C__carbon_thunk.decl: %C__carbon_thunk.type = fn_decl @C__carbon_thunk [concrete = constants.%C__carbon_thunk] {
// CHECK:STDOUT: <elided>
// CHECK:STDOUT: } {
// CHECK:STDOUT: <elided>
// CHECK:STDOUT: }
// CHECK:STDOUT: %operator==__carbon_thunk.decl: %operator==__carbon_thunk.type = fn_decl @operator==__carbon_thunk [concrete = constants.%operator==__carbon_thunk] {
// 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: %c1.patt: %pattern_type.217 = binding_pattern c1 [concrete]
// CHECK:STDOUT: %c1.var_patt: %pattern_type.217 = var_pattern %c1.patt [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT: %c1.var: ref %C = var %c1.var_patt
// CHECK:STDOUT: %Cpp.ref.loc12_19: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
// CHECK:STDOUT: %C.ref.loc12_22: type = name_ref C, imports.%C.decl [concrete = constants.%C]
// CHECK:STDOUT: %C.ref.loc12_24: %C.C.cpp_overload_set.type = name_ref C, imports.%C.C.cpp_overload_set.value [concrete = constants.%C.C.cpp_overload_set.value]
// CHECK:STDOUT: %.loc12_3.1: ref %C = splice_block %c1.var {}
// CHECK:STDOUT: %addr.loc12_27: %ptr.d9e = addr_of %.loc12_3.1
// CHECK:STDOUT: %C__carbon_thunk.call.loc12: init %empty_tuple.type = call imports.%C__carbon_thunk.decl(%addr.loc12_27)
// CHECK:STDOUT: %.loc12_27: init %C = in_place_init %C__carbon_thunk.call.loc12, %.loc12_3.1
// CHECK:STDOUT: assign %c1.var, %.loc12_27
// CHECK:STDOUT: %.loc12_14: type = splice_block %C.ref.loc12_14 [concrete = constants.%C] {
// CHECK:STDOUT: %Cpp.ref.loc12_11: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
// CHECK:STDOUT: %C.ref.loc12_14: type = name_ref C, imports.%C.decl [concrete = constants.%C]
// CHECK:STDOUT: }
// CHECK:STDOUT: %c1: ref %C = bind_name c1, %c1.var
// CHECK:STDOUT: name_binding_decl {
// CHECK:STDOUT: %c2.patt: %pattern_type.217 = binding_pattern c2 [concrete]
// CHECK:STDOUT: %c2.var_patt: %pattern_type.217 = var_pattern %c2.patt [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT: %c2.var: ref %C = var %c2.var_patt
// CHECK:STDOUT: %Cpp.ref.loc13_19: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
// CHECK:STDOUT: %C.ref.loc13_22: type = name_ref C, imports.%C.decl [concrete = constants.%C]
// CHECK:STDOUT: %C.ref.loc13_24: %C.C.cpp_overload_set.type = name_ref C, imports.%C.C.cpp_overload_set.value [concrete = constants.%C.C.cpp_overload_set.value]
// CHECK:STDOUT: %.loc13_3.1: ref %C = splice_block %c2.var {}
// CHECK:STDOUT: %addr.loc13_27: %ptr.d9e = addr_of %.loc13_3.1
// CHECK:STDOUT: %C__carbon_thunk.call.loc13: init %empty_tuple.type = call imports.%C__carbon_thunk.decl(%addr.loc13_27)
// CHECK:STDOUT: %.loc13_27: init %C = in_place_init %C__carbon_thunk.call.loc13, %.loc13_3.1
// CHECK:STDOUT: assign %c2.var, %.loc13_27
// CHECK:STDOUT: %.loc13_14: type = splice_block %C.ref.loc13_14 [concrete = constants.%C] {
// CHECK:STDOUT: %Cpp.ref.loc13_11: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
// CHECK:STDOUT: %C.ref.loc13_14: type = name_ref C, imports.%C.decl [concrete = constants.%C]
// CHECK:STDOUT: }
// CHECK:STDOUT: %c2: ref %C = bind_name c2, %c2.var
// CHECK:STDOUT: name_binding_decl {
// CHECK:STDOUT: %equal.patt: %pattern_type.831 = binding_pattern equal [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT: %c1.ref.loc16: ref %C = name_ref c1, %c1
// CHECK:STDOUT: %c2.ref.loc16: ref %C = name_ref c2, %c2
// CHECK:STDOUT: %.loc16_21.1: %C = bind_value %c1.ref.loc16
// CHECK:STDOUT: %.loc16_27.1: %C = bind_value %c2.ref.loc16
// CHECK:STDOUT: %.loc16_21.2: ref %C = value_as_ref %.loc16_21.1
// CHECK:STDOUT: %addr.loc16_24.1: %ptr.d9e = addr_of %.loc16_21.2
// CHECK:STDOUT: %.loc16_27.2: ref %C = value_as_ref %.loc16_27.1
// CHECK:STDOUT: %addr.loc16_24.2: %ptr.d9e = addr_of %.loc16_27.2
// CHECK:STDOUT: %.loc16_24.1: ref bool = temporary_storage
// CHECK:STDOUT: %addr.loc16_24.3: %ptr.bb2 = addr_of %.loc16_24.1
// CHECK:STDOUT: %operator==__carbon_thunk.call: init %empty_tuple.type = call imports.%operator==__carbon_thunk.decl(%addr.loc16_24.1, %addr.loc16_24.2, %addr.loc16_24.3)
// CHECK:STDOUT: %.loc16_24.2: init bool = in_place_init %operator==__carbon_thunk.call, %.loc16_24.1
// CHECK:STDOUT: %.loc16_14.1: type = splice_block %.loc16_14.3 [concrete = bool] {
// CHECK:STDOUT: %Bool.call.loc16: init type = call constants.%Bool() [concrete = bool]
// CHECK:STDOUT: %.loc16_14.2: type = value_of_initializer %Bool.call.loc16 [concrete = bool]
// CHECK:STDOUT: %.loc16_14.3: type = converted %Bool.call.loc16, %.loc16_14.2 [concrete = bool]
// CHECK:STDOUT: }
// CHECK:STDOUT: %.loc16_24.3: bool = value_of_initializer %.loc16_24.2
// CHECK:STDOUT: %.loc16_24.4: bool = converted %.loc16_24.2, %.loc16_24.3
// CHECK:STDOUT: %equal: bool = bind_name equal, %.loc16_24.4
// CHECK:STDOUT: name_binding_decl {
// CHECK:STDOUT: %not_equal.patt: %pattern_type.831 = binding_pattern not_equal [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT: %c1.ref.loc23: ref %C = name_ref c1, %c1
// CHECK:STDOUT: %c2.ref.loc23: ref %C = name_ref c2, %c2
// CHECK:STDOUT: %.loc23_18.1: type = splice_block %.loc23_18.3 [concrete = bool] {
// CHECK:STDOUT: %Bool.call.loc23: init type = call constants.%Bool() [concrete = bool]
// CHECK:STDOUT: %.loc23_18.2: type = value_of_initializer %Bool.call.loc23 [concrete = bool]
// CHECK:STDOUT: %.loc23_18.3: type = converted %Bool.call.loc23, %.loc23_18.2 [concrete = bool]
// CHECK:STDOUT: }
// CHECK:STDOUT: %not_equal: bool = bind_name not_equal, <error> [concrete = <error>]
// CHECK:STDOUT: %facet_value.loc13: %type_where = facet_value constants.%C, () [concrete = constants.%facet_value]
// CHECK:STDOUT: %.loc13_3.2: %type_where = converted constants.%C, %facet_value.loc13 [concrete = constants.%facet_value]
// CHECK:STDOUT: %DestroyT.binding.as_type.as.Destroy.impl.Op.bound.loc13: <bound method> = bound_method %c2.var, constants.%DestroyT.binding.as_type.as.Destroy.impl.Op.841
// CHECK:STDOUT: <elided>
// CHECK:STDOUT: %bound_method.loc13: <bound method> = bound_method %c2.var, %DestroyT.binding.as_type.as.Destroy.impl.Op.specific_fn.1
// CHECK:STDOUT: %addr.loc13_3: %ptr.d9e = addr_of %c2.var
// CHECK:STDOUT: %DestroyT.binding.as_type.as.Destroy.impl.Op.call.loc13: init %empty_tuple.type = call %bound_method.loc13(%addr.loc13_3)
// CHECK:STDOUT: %facet_value.loc12: %type_where = facet_value constants.%C, () [concrete = constants.%facet_value]
// CHECK:STDOUT: %.loc12_3.2: %type_where = converted constants.%C, %facet_value.loc12 [concrete = constants.%facet_value]
// CHECK:STDOUT: %DestroyT.binding.as_type.as.Destroy.impl.Op.bound.loc12: <bound method> = bound_method %c1.var, constants.%DestroyT.binding.as_type.as.Destroy.impl.Op.841
// CHECK:STDOUT: <elided>
// CHECK:STDOUT: %bound_method.loc12: <bound method> = bound_method %c1.var, %DestroyT.binding.as_type.as.Destroy.impl.Op.specific_fn.2
// CHECK:STDOUT: %addr.loc12_3: %ptr.d9e = addr_of %c1.var
// CHECK:STDOUT: %DestroyT.binding.as_type.as.Destroy.impl.Op.call.loc12: init %empty_tuple.type = call %bound_method.loc12(%addr.loc12_3)
// CHECK:STDOUT: <elided>
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: --- import_single_namespace.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
toolchain/sem_ir/BUILD
+1
View File
@@ -139,6 +139,7 @@ cc_library(
"//toolchain/parse:tree",
"@llvm-project//clang:ast",
"@llvm-project//clang:frontend",
"@llvm-project//clang:sema",
"@llvm-project//llvm:Support",
],
)
toolchain/sem_ir/cpp_overload_set.h
+5
View File
@@ -7,6 +7,7 @@
#include "clang/AST/Decl.h"
#include "clang/AST/UnresolvedSet.h"
#include "clang/Sema/Overload.h"
#include "common/ostream.h"
#include "toolchain/base/value_store.h"
#include "toolchain/sem_ir/ids.h"
@@ -29,6 +30,10 @@ struct CppOverloadSet : public Printable<CppOverloadSet> {
// store the candidates.
clang::UnresolvedSet<4> candidate_functions;
/// Information about operator rewrites to consider when adding operator
/// functions to a candidate set.
clang::OverloadCandidateSet::OperatorRewriteInfo operator_rewrite_info;
auto Print(llvm::raw_ostream& out) const -> void {
out << "name: " << name_id << ", parent_scope: " << parent_scope_id;
}