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Overload resolution support for more kinds of candidate. (#6071)

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* Add support for template candidates by calling the suitable
`AddCandidate` function for them.
* Add support for overloading on `*this` qualifiers by calling
`AddMethodCandidate` when appropriate.
* Make mapping from Carbon arguments to Clang arguments a little more
faithful by mapping the Carbon expression category into the Clang value
kind.
This commit is contained in:
Richard Smith
2025-09-16 21:57:32 +00:00
committed by GitHub
parent bac828d244
commit b054e3d2b0
11 changed files with 420 additions and 234 deletions
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toolchain/check/testdata/interop/cpp/function/struct.carbon
Vendored
+4 -54
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@@ -27,7 +27,7 @@ library "[[@TEST_NAME]]";
import Cpp library "decl_value_param_type.h";
fn F() {
// CHECK:STDERR: fail_import_decl_value_param_type.carbon:[[@LINE+15]]:11: error: invalid use of incomplete type `Cpp.S` [IncompleteTypeInConversion]
// CHECK:STDERR: fail_import_decl_value_param_type.carbon:[[@LINE+8]]:11: error: invalid use of incomplete type `Cpp.S` [IncompleteTypeInConversion]
// CHECK:STDERR: Cpp.foo({} as Cpp.S);
// CHECK:STDERR: ^~~~~~~~~~~
// CHECK:STDERR: fail_import_decl_value_param_type.carbon:[[@LINE-6]]:10: in file included here [InCppInclude]
@@ -35,13 +35,6 @@ fn F() {
// CHECK:STDERR: struct S;
// CHECK:STDERR: ^
// CHECK:STDERR:
// CHECK:STDERR: fail_import_decl_value_param_type.carbon:[[@LINE+7]]:3: error: call argument of type `<error>` is not supported [CppCallArgTypeNotSupported]
// CHECK:STDERR: Cpp.foo({} as Cpp.S);
// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~
// CHECK:STDERR: fail_import_decl_value_param_type.carbon:[[@LINE+4]]:3: note: in call to Cpp function here [InCallToCppFunction]
// CHECK:STDERR: Cpp.foo({} as Cpp.S);
// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~
// CHECK:STDERR:
Cpp.foo({} as Cpp.S);
}
@@ -65,13 +58,6 @@ fn F() {
// CHECK:STDERR: ^
// CHECK:STDERR:
let s: Cpp.S;
// CHECK:STDERR: fail_import_decl_value_param_type_previously_imported.carbon:[[@LINE+7]]:3: error: call argument of type `<error>` is not supported [CppCallArgTypeNotSupported]
// CHECK:STDERR: Cpp.foo(s);
// CHECK:STDERR: ^~~~~~~~~~
// CHECK:STDERR: fail_import_decl_value_param_type_previously_imported.carbon:[[@LINE+4]]:3: note: in call to Cpp function here [InCallToCppFunction]
// CHECK:STDERR: Cpp.foo(s);
// CHECK:STDERR: ^~~~~~~~~~
// CHECK:STDERR:
Cpp.foo(s);
}
@@ -93,7 +79,7 @@ library "[[@TEST_NAME]]";
import Cpp library "double_decl_value_param_type.h";
fn F() {
// CHECK:STDERR: fail_import_double_decl_value_param_type.carbon:[[@LINE+15]]:12: error: invalid use of incomplete type `Cpp.S` [IncompleteTypeInConversion]
// CHECK:STDERR: fail_import_double_decl_value_param_type.carbon:[[@LINE+8]]:12: error: invalid use of incomplete type `Cpp.S` [IncompleteTypeInConversion]
// CHECK:STDERR: Cpp.foo1({} as Cpp.S);
// CHECK:STDERR: ^~~~~~~~~~~
// CHECK:STDERR: fail_import_double_decl_value_param_type.carbon:[[@LINE-6]]:10: in file included here [InCppInclude]
@@ -101,29 +87,15 @@ fn F() {
// CHECK:STDERR: struct S;
// CHECK:STDERR: ^
// CHECK:STDERR:
// CHECK:STDERR: fail_import_double_decl_value_param_type.carbon:[[@LINE+7]]:3: error: call argument of type `<error>` is not supported [CppCallArgTypeNotSupported]
// CHECK:STDERR: Cpp.foo1({} as Cpp.S);
// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~
// CHECK:STDERR: fail_import_double_decl_value_param_type.carbon:[[@LINE+4]]:3: note: in call to Cpp function here [InCallToCppFunction]
// CHECK:STDERR: Cpp.foo1({} as Cpp.S);
// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~
// CHECK:STDERR:
Cpp.foo1({} as Cpp.S);
// CHECK:STDERR: fail_import_double_decl_value_param_type.carbon:[[@LINE+15]]:12: error: invalid use of incomplete type `Cpp.S` [IncompleteTypeInConversion]
// CHECK:STDERR: fail_import_double_decl_value_param_type.carbon:[[@LINE+8]]:12: error: invalid use of incomplete type `Cpp.S` [IncompleteTypeInConversion]
// CHECK:STDERR: Cpp.foo2({} as Cpp.S);
// CHECK:STDERR: ^~~~~~~~~~~
// CHECK:STDERR: fail_import_double_decl_value_param_type.carbon:[[@LINE-22]]:10: in file included here [InCppInclude]
// CHECK:STDERR: fail_import_double_decl_value_param_type.carbon:[[@LINE-15]]:10: in file included here [InCppInclude]
// CHECK:STDERR: ./double_decl_value_param_type.h:2:8: note: class was forward declared here [ClassForwardDeclaredHere]
// CHECK:STDERR: struct S;
// CHECK:STDERR: ^
// CHECK:STDERR:
// CHECK:STDERR: fail_import_double_decl_value_param_type.carbon:[[@LINE+7]]:3: error: call argument of type `<error>` is not supported [CppCallArgTypeNotSupported]
// CHECK:STDERR: Cpp.foo2({} as Cpp.S);
// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~
// CHECK:STDERR: fail_import_double_decl_value_param_type.carbon:[[@LINE+4]]:3: note: in call to Cpp function here [InCallToCppFunction]
// CHECK:STDERR: Cpp.foo2({} as Cpp.S);
// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~
// CHECK:STDERR:
Cpp.foo2({} as Cpp.S);
}
@@ -632,14 +604,10 @@ fn F() {
// CHECK:STDOUT: --- fail_todo_import_definition_single_data_member_value_param_type.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %empty_tuple.type: type = tuple_type () [concrete]
// CHECK:STDOUT: %S: type = class_type @S [concrete]
// CHECK:STDOUT: %.c5d: type = cpp_overload_set_type @As.Convert [concrete]
// CHECK:STDOUT: %empty_struct: %.c5d = struct_value () [concrete]
// CHECK:STDOUT: %empty_struct_type: type = struct_type {} [concrete]
// CHECK:STDOUT: %ptr.5c7: type = ptr_type %S [concrete]
// CHECK:STDOUT: %foo__carbon_thunk.type: type = fn_type @foo__carbon_thunk [concrete]
// CHECK:STDOUT: %foo__carbon_thunk: %foo__carbon_thunk.type = struct_value () [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
@@ -650,11 +618,6 @@ fn F() {
// CHECK:STDOUT: }
// CHECK:STDOUT: %S.decl: type = class_decl @S [concrete = constants.%S] {} {}
// CHECK:STDOUT: %.a21: %.c5d = cpp_overload_set_value @As.Convert [concrete = constants.%empty_struct]
// CHECK:STDOUT: %foo__carbon_thunk.decl: %foo__carbon_thunk.type = fn_decl @foo__carbon_thunk [concrete = constants.%foo__carbon_thunk] {
// CHECK:STDOUT: <elided>
// CHECK:STDOUT: } {
// CHECK:STDOUT: <elided>
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @F() {
@@ -665,22 +628,16 @@ fn F() {
// CHECK:STDOUT: %Cpp.ref.loc15_17: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
// CHECK:STDOUT: %S.ref: type = name_ref S, imports.%S.decl [concrete = constants.%S]
// CHECK:STDOUT: %.loc15_14: %S = converted %.loc15_12, <error> [concrete = <error>]
// CHECK:STDOUT: %addr: %ptr.5c7 = addr_of <error> [concrete = <error>]
// CHECK:STDOUT: %foo__carbon_thunk.call: init %empty_tuple.type = call imports.%foo__carbon_thunk.decl(%addr)
// CHECK:STDOUT: <elided>
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: --- fail_todo_import_definition_multiple_data_members_value_param_type.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %empty_tuple.type: type = tuple_type () [concrete]
// CHECK:STDOUT: %S: type = class_type @S [concrete]
// CHECK:STDOUT: %.c5d: type = cpp_overload_set_type @As.Convert [concrete]
// CHECK:STDOUT: %empty_struct: %.c5d = struct_value () [concrete]
// CHECK:STDOUT: %empty_struct_type: type = struct_type {} [concrete]
// CHECK:STDOUT: %ptr.5c7: type = ptr_type %S [concrete]
// CHECK:STDOUT: %foo__carbon_thunk.type: type = fn_type @foo__carbon_thunk [concrete]
// CHECK:STDOUT: %foo__carbon_thunk: %foo__carbon_thunk.type = struct_value () [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
@@ -691,11 +648,6 @@ fn F() {
// CHECK:STDOUT: }
// CHECK:STDOUT: %S.decl: type = class_decl @S [concrete = constants.%S] {} {}
// CHECK:STDOUT: %.a21: %.c5d = cpp_overload_set_value @As.Convert [concrete = constants.%empty_struct]
// CHECK:STDOUT: %foo__carbon_thunk.decl: %foo__carbon_thunk.type = fn_decl @foo__carbon_thunk [concrete = constants.%foo__carbon_thunk] {
// CHECK:STDOUT: <elided>
// CHECK:STDOUT: } {
// CHECK:STDOUT: <elided>
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @F() {
@@ -706,8 +658,6 @@ fn F() {
// CHECK:STDOUT: %Cpp.ref.loc15_17: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
// CHECK:STDOUT: %S.ref: type = name_ref S, imports.%S.decl [concrete = constants.%S]
// CHECK:STDOUT: %.loc15_14: %S = converted %.loc15_12, <error> [concrete = <error>]
// CHECK:STDOUT: %addr: %ptr.5c7 = addr_of <error> [concrete = <error>]
// CHECK:STDOUT: %foo__carbon_thunk.call: init %empty_tuple.type = call imports.%foo__carbon_thunk.decl(%addr)
// CHECK:STDOUT: <elided>
// CHECK:STDOUT: }
// CHECK:STDOUT: