mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-09-24 22:02:23 +01:00
Geoff RomerandRichard Smith
e023f75254
The bulk of this change is changing most pattern insts to be `Always` rather than `AlwaysUnique` constants, so that they can be wrapped in `SpecificConstant`s to perform substitution. That then lets thunking rely much more on `SpecificConstant` wrappers instead of deep-copying the inst tree with modified types. This approach to thunking should scale better, particularly as things like form generics make function signatures more complex, because we can leverage the existing support for constant evaluation and substitution. Unfortunately, applying this approach to binding patterns will require more work; see the TODO near the top of `thunk.cpp` for details. --------- Co-authored-by: Richard Smith <richard@metafoo.co.uk>
114 lines
6.3 KiB
Plaintext
114 lines
6.3 KiB
Plaintext
// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
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// Exceptions. See /LICENSE for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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// INCLUDE-FILE: toolchain/testing/testdata/min_prelude/none.carbon
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//
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// AUTOUPDATE
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// TIP: To test this file alone, run:
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// TIP: bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/check/testdata/interop/cpp/template/class_template.carbon
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// TIP: To dump output, run:
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// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/interop/cpp/template/class_template.carbon
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// --- class_template.h
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struct A {};
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struct B {};
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template<typename T, typename U>
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struct X {
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static T f(U);
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};
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// --- use_class_template.carbon
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library "[[@TEST_NAME]]";
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import Cpp library "class_template.h";
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//@dump-sem-ir-begin
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var a: Cpp.A = Cpp.X(Cpp.A, Cpp.B).f({} as Cpp.B);
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//@dump-sem-ir-end
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// CHECK:STDOUT: --- use_class_template.carbon
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// CHECK:STDOUT:
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// CHECK:STDOUT: constants {
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// CHECK:STDOUT: %A: type = class_type @A [concrete]
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// CHECK:STDOUT: %empty_struct_type: type = struct_type {} [concrete]
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// CHECK:STDOUT: %empty_tuple.type: type = tuple_type () [concrete]
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// CHECK:STDOUT: %pattern_type.3fa: type = pattern_type %A [concrete]
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// CHECK:STDOUT: %a.patt: %pattern_type.3fa = ref_binding_pattern a [concrete]
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// CHECK:STDOUT: %a.var_patt: %pattern_type.3fa = var_pattern %a.patt [concrete]
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// CHECK:STDOUT: %X.type: type = cpp_type_template_type X [concrete]
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// CHECK:STDOUT: %X.template: %X.type = struct_value () [concrete]
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// CHECK:STDOUT: %B: type = class_type @B [concrete]
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// CHECK:STDOUT: %X.f.cpp_overload_set.type: type = cpp_overload_set_type @X.f.cpp_overload_set [concrete]
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// CHECK:STDOUT: %X.f.cpp_overload_set.value: %X.f.cpp_overload_set.type = cpp_overload_set_value @X.f.cpp_overload_set [concrete]
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// CHECK:STDOUT: %empty_struct: %empty_struct_type = struct_value () [concrete]
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// CHECK:STDOUT: %B.val: %B = struct_value () [concrete]
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// CHECK:STDOUT: %ptr.dc0: type = ptr_type %B [concrete]
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// CHECK:STDOUT: %ptr.25f: type = ptr_type %A [concrete]
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// CHECK:STDOUT: %f__carbon_thunk.type: type = fn_type @f__carbon_thunk [concrete]
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// CHECK:STDOUT: %f__carbon_thunk: %f__carbon_thunk.type = struct_value () [concrete]
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// CHECK:STDOUT: %.cfb: ref %B = temporary invalid, %B.val [concrete]
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: imports {
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// CHECK:STDOUT: %Cpp: <namespace> = namespace file.%Cpp.import_cpp, [concrete] {
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// CHECK:STDOUT: .A = %A.decl
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// CHECK:STDOUT: .X = %X.template
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// CHECK:STDOUT: .B = %B.decl
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// CHECK:STDOUT: import Cpp//...
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// CHECK:STDOUT: }
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// CHECK:STDOUT: %A.decl: type = class_decl @A [concrete = constants.%A] {} {}
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// CHECK:STDOUT: %X.template: %X.type = struct_value () [concrete = constants.%X.template]
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// CHECK:STDOUT: %B.decl: type = class_decl @B [concrete = constants.%B] {} {}
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// CHECK:STDOUT: %X.f.cpp_overload_set.value: %X.f.cpp_overload_set.type = cpp_overload_set_value @X.f.cpp_overload_set [concrete = constants.%X.f.cpp_overload_set.value]
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// CHECK:STDOUT: %f__carbon_thunk.decl: %f__carbon_thunk.type = fn_decl @f__carbon_thunk [concrete = constants.%f__carbon_thunk] {
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// CHECK:STDOUT: <elided>
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// CHECK:STDOUT: } {
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// CHECK:STDOUT: <elided>
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// CHECK:STDOUT: }
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: file {
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// CHECK:STDOUT: name_binding_decl {
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// CHECK:STDOUT: %a.patt: %pattern_type.3fa = ref_binding_pattern a [concrete = constants.%a.patt]
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// CHECK:STDOUT: %a.var_patt: %pattern_type.3fa = var_pattern %a.patt [concrete = constants.%a.var_patt]
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// CHECK:STDOUT: }
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// CHECK:STDOUT: %a.var: ref %A = var %a.var_patt [concrete]
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// CHECK:STDOUT: %.loc7: type = splice_block %A.ref [concrete = constants.%A] {
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// CHECK:STDOUT: %Cpp.ref: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
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// CHECK:STDOUT: %A.ref: type = name_ref A, imports.%A.decl [concrete = constants.%A]
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// CHECK:STDOUT: }
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// CHECK:STDOUT: %a: ref %A = ref_binding a, %a.var [concrete = %a.var]
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: fn @__global_init() {
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// CHECK:STDOUT: !entry:
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// CHECK:STDOUT: %Cpp.ref.loc7_16: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
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// CHECK:STDOUT: %X.ref: %X.type = name_ref X, imports.%X.template [concrete = constants.%X.template]
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// CHECK:STDOUT: %Cpp.ref.loc7_22: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
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// CHECK:STDOUT: %A.ref: type = name_ref A, imports.%A.decl [concrete = constants.%A]
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// CHECK:STDOUT: %Cpp.ref.loc7_29: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
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// CHECK:STDOUT: %B.ref.loc7_32: type = name_ref B, imports.%B.decl [concrete = constants.%B]
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// CHECK:STDOUT: %f.ref: %X.f.cpp_overload_set.type = name_ref f, imports.%X.f.cpp_overload_set.value [concrete = constants.%X.f.cpp_overload_set.value]
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// CHECK:STDOUT: %.loc7_39.1: %empty_struct_type = struct_literal () [concrete = constants.%empty_struct]
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// CHECK:STDOUT: %Cpp.ref.loc7_44: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
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// CHECK:STDOUT: %B.ref.loc7_47: type = name_ref B, imports.%B.decl [concrete = constants.%B]
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// CHECK:STDOUT: %.loc7_39.2: ref %B = temporary_storage
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// CHECK:STDOUT: %.loc7_39.3: init %B to %.loc7_39.2 = class_init () [concrete = constants.%B.val]
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// CHECK:STDOUT: %.loc7_41.1: init %B = converted %.loc7_39.1, %.loc7_39.3 [concrete = constants.%B.val]
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// CHECK:STDOUT: %.loc7_1: ref %A = splice_block file.%a.var [concrete = file.%a.var] {}
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// CHECK:STDOUT: %.loc7_41.2: ref %B = temporary %.loc7_39.2, %.loc7_41.1 [concrete = constants.%.cfb]
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// CHECK:STDOUT: %.loc7_41.3: %B = acquire_value %.loc7_41.2 [concrete = constants.%B.val]
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// CHECK:STDOUT: %.loc7_41.4: ref %B = value_as_ref %.loc7_41.3
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// CHECK:STDOUT: %addr.loc7_49.1: %ptr.dc0 = addr_of %.loc7_41.4
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// CHECK:STDOUT: %addr.loc7_49.2: %ptr.25f = addr_of %.loc7_1
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// CHECK:STDOUT: %f__carbon_thunk.call: init %empty_tuple.type = call imports.%f__carbon_thunk.decl(%addr.loc7_49.1, %addr.loc7_49.2)
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// CHECK:STDOUT: %.loc7_49: init %A to %.loc7_1 = mark_in_place_init %f__carbon_thunk.call
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// CHECK:STDOUT: assign file.%a.var, %.loc7_49
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// CHECK:STDOUT: <elided>
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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