carbon-language/carbon-lang
1
0
Fork 0
mirror of https://github.com/carbon-language/carbon-lang.git synced 2026-09-29 22:02:42 +01:00
Code Issues Packages Projects Releases 10 Wiki Activity
Files
e1cf833c458acb33bc877e2e5ee504c19bb67f05
carbon-lang/toolchain/check/testdata/function/generic/import_specific.carbon
T
Geoff RomerandRichard Smith e023f75254 Implement thunking in terms of constant evaluation (#7332) 
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>
2026-06-13 00:22:00 +00:00

243 lines
12 KiB
Plaintext
Raw Blame History

// 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/none.carbon
// TODO: Add ranges and switch to "--dump-sem-ir-ranges=only".
// EXTRA-ARGS: --dump-sem-ir-ranges=if-present
//
// AUTOUPDATE
// TIP: To test this file alone, run:
// TIP: bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/check/testdata/function/generic/import_specific.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/function/generic/import_specific.carbon
// --- library.carbon
library "[[@TEST_NAME]]";
fn F(unused T:! type) {
}
fn G(T:! type) {
F(T);
}
// --- user.carbon
library "[[@TEST_NAME]]";
import library "library";
class C {}
fn H() {
// TODO: We currently crash when importing G if we don't force F to be imported first.
F(C);
G(C);
}
// CHECK:STDOUT: --- library.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %type: type = facet_type <type> [concrete]
// CHECK:STDOUT: %.Self: %type = symbolic_binding .Self [symbolic_self]
// CHECK:STDOUT: %pattern_type: type = pattern_type type [concrete]
// CHECK:STDOUT: %T.patt.d47011.1: %pattern_type = symbolic_binding_pattern T, 0 [symbolic]
// CHECK:STDOUT: %T.67db0b.1: type = symbolic_binding T, 0 [symbolic]
// CHECK:STDOUT: %F.type: type = fn_type @F [concrete]
// CHECK:STDOUT: %empty_tuple.type: type = tuple_type () [concrete]
// CHECK:STDOUT: %F: %F.type = struct_value () [concrete]
// CHECK:STDOUT: %T.patt.d47011.2: %pattern_type = symbolic_binding_pattern T, 0 [symbolic]
// CHECK:STDOUT: %T.67db0b.2: type = symbolic_binding T, 0 [symbolic]
// CHECK:STDOUT: %G.type: type = fn_type @G [concrete]
// CHECK:STDOUT: %G: %G.type = struct_value () [concrete]
// CHECK:STDOUT: %F.specific_fn: <specific function> = specific_function %F, @F(%T.67db0b.2) [symbolic]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace [concrete] {
// CHECK:STDOUT: .F = %F.decl
// CHECK:STDOUT: .G = %G.decl
// CHECK:STDOUT: }
// CHECK:STDOUT: %F.decl: %F.type = fn_decl @F [concrete = constants.%F] {
// CHECK:STDOUT: %T.patt.loc4_14.1: %pattern_type = symbolic_binding_pattern T, 0 [symbolic = %T.patt.loc4_14.2 (constants.%T.patt.d47011.1)]
// CHECK:STDOUT: } {
// CHECK:STDOUT: %.loc4_17.1: type = splice_block %.loc4_17.2 [concrete = type] {
// CHECK:STDOUT: %.Self: %type = symbolic_binding .Self [symbolic_self = constants.%.Self]
// CHECK:STDOUT: %.loc4_17.2: type = type_literal type [concrete = type]
// CHECK:STDOUT: }
// CHECK:STDOUT: %T.loc4_14.2: type = symbolic_binding T, 0 [symbolic = %T.loc4_14.1 (constants.%T.67db0b.1)]
// CHECK:STDOUT: }
// CHECK:STDOUT: %G.decl: %G.type = fn_decl @G [concrete = constants.%G] {
// CHECK:STDOUT: %T.patt.loc7_7.1: %pattern_type = symbolic_binding_pattern T, 0 [symbolic = %T.patt.loc7_7.2 (constants.%T.patt.d47011.2)]
// CHECK:STDOUT: } {
// CHECK:STDOUT: %.loc7_10.1: type = splice_block %.loc7_10.2 [concrete = type] {
// CHECK:STDOUT: %.Self: %type = symbolic_binding .Self [symbolic_self = constants.%.Self]
// CHECK:STDOUT: %.loc7_10.2: type = type_literal type [concrete = type]
// CHECK:STDOUT: }
// CHECK:STDOUT: %T.loc7_7.2: type = symbolic_binding T, 0 [symbolic = %T.loc7_7.1 (constants.%T.67db0b.2)]
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: generic fn @F(%T.loc4_14.2: type) {
// CHECK:STDOUT: %T.patt.loc4_14.2: %pattern_type = symbolic_binding_pattern T, 0 [symbolic = %T.patt.loc4_14.2 (constants.%T.patt.d47011.1)]
// CHECK:STDOUT: %T.loc4_14.1: type = symbolic_binding T, 0 [symbolic = %T.loc4_14.1 (constants.%T.67db0b.1)]
// CHECK:STDOUT:
// CHECK:STDOUT: !definition:
// CHECK:STDOUT:
// CHECK:STDOUT: fn() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: return
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: generic fn @G(%T.loc7_7.2: type) {
// CHECK:STDOUT: %T.patt.loc7_7.2: %pattern_type = symbolic_binding_pattern T, 0 [symbolic = %T.patt.loc7_7.2 (constants.%T.patt.d47011.2)]
// CHECK:STDOUT: %T.loc7_7.1: type = symbolic_binding T, 0 [symbolic = %T.loc7_7.1 (constants.%T.67db0b.2)]
// CHECK:STDOUT:
// CHECK:STDOUT: !definition:
// CHECK:STDOUT: %F.specific_fn.loc8_3.2: <specific function> = specific_function constants.%F, @F(%T.loc7_7.1) [symbolic = %F.specific_fn.loc8_3.2 (constants.%F.specific_fn)]
// CHECK:STDOUT:
// CHECK:STDOUT: fn() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: %F.ref: %F.type = name_ref F, file.%F.decl [concrete = constants.%F]
// CHECK:STDOUT: %T.ref: type = name_ref T, %T.loc7_7.2 [symbolic = %T.loc7_7.1 (constants.%T.67db0b.2)]
// CHECK:STDOUT: %F.specific_fn.loc8_3.1: <specific function> = specific_function %F.ref, @F(constants.%T.67db0b.2) [symbolic = %F.specific_fn.loc8_3.2 (constants.%F.specific_fn)]
// CHECK:STDOUT: %F.call: init %empty_tuple.type = call %F.specific_fn.loc8_3.1()
// CHECK:STDOUT: return
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @F(constants.%T.67db0b.1) {
// CHECK:STDOUT: %T.patt.loc4_14.2 => constants.%T.patt.d47011.1
// CHECK:STDOUT: %T.loc4_14.1 => constants.%T.67db0b.1
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @G(constants.%T.67db0b.2) {
// CHECK:STDOUT: %T.patt.loc7_7.2 => constants.%T.patt.d47011.2
// CHECK:STDOUT: %T.loc7_7.1 => constants.%T.67db0b.2
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @F(constants.%T.67db0b.2) {
// CHECK:STDOUT: %T.patt.loc4_14.2 => constants.%T.patt.d47011.1
// CHECK:STDOUT: %T.loc4_14.1 => constants.%T.67db0b.2
// CHECK:STDOUT:
// CHECK:STDOUT: !definition:
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: --- user.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %C: type = class_type @C [concrete]
// CHECK:STDOUT: %empty_struct_type: type = struct_type {} [concrete]
// CHECK:STDOUT: %complete_type: <witness> = complete_type_witness %empty_struct_type [concrete]
// CHECK:STDOUT: %H.type: type = fn_type @H [concrete]
// CHECK:STDOUT: %empty_tuple.type: type = tuple_type () [concrete]
// CHECK:STDOUT: %H: %H.type = struct_value () [concrete]
// CHECK:STDOUT: %F.type: type = fn_type @F [concrete]
// CHECK:STDOUT: %F: %F.type = struct_value () [concrete]
// CHECK:STDOUT: %T.67db0b.1: type = symbolic_binding T, 0 [symbolic]
// CHECK:STDOUT: %pattern_type: type = pattern_type type [concrete]
// CHECK:STDOUT: %T.patt: %pattern_type = symbolic_binding_pattern T, 0 [symbolic]
// CHECK:STDOUT: %F.specific_fn.e0d: <specific function> = specific_function %F, @F(%C) [concrete]
// CHECK:STDOUT: %G.type: type = fn_type @G [concrete]
// CHECK:STDOUT: %G: %G.type = struct_value () [concrete]
// CHECK:STDOUT: %T.67db0b.2: type = symbolic_binding T, 0 [symbolic]
// CHECK:STDOUT: %F.specific_fn.eab: <specific function> = specific_function %F, @F(%T.67db0b.2) [symbolic]
// CHECK:STDOUT: %G.specific_fn: <specific function> = specific_function %G, @G(%C) [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Main.F: %F.type = import_ref Main//library, F, loaded [concrete = constants.%F]
// CHECK:STDOUT: %Main.G: %G.type = import_ref Main//library, G, loaded [concrete = constants.%G]
// CHECK:STDOUT: %Main.import_ref.b3bc94.1: type = import_ref Main//library, loc4_14, loaded [symbolic = @F.%T (constants.%T.67db0b.1)]
// CHECK:STDOUT: %Main.import_ref.b3bc94.2: type = import_ref Main//library, loc7_7, loaded [symbolic = @G.%T (constants.%T.67db0b.2)]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace [concrete] {
// CHECK:STDOUT: .F = imports.%Main.F
// CHECK:STDOUT: .G = imports.%Main.G
// CHECK:STDOUT: .C = %C.decl
// CHECK:STDOUT: .H = %H.decl
// CHECK:STDOUT: }
// CHECK:STDOUT: %default.import = import <none>
// CHECK:STDOUT: %C.decl: type = class_decl @C [concrete = constants.%C] {} {}
// CHECK:STDOUT: %H.decl: %H.type = fn_decl @H [concrete = constants.%H] {} {}
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: class @C {
// CHECK:STDOUT: %complete_type: <witness> = complete_type_witness constants.%empty_struct_type [concrete = constants.%complete_type]
// CHECK:STDOUT: complete_type_witness = %complete_type
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT: .Self = constants.%C
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @H() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: %F.ref: %F.type = name_ref F, imports.%Main.F [concrete = constants.%F]
// CHECK:STDOUT: %C.ref.loc10: type = name_ref C, file.%C.decl [concrete = constants.%C]
// CHECK:STDOUT: %F.specific_fn: <specific function> = specific_function %F.ref, @F(constants.%C) [concrete = constants.%F.specific_fn.e0d]
// CHECK:STDOUT: %F.call: init %empty_tuple.type = call %F.specific_fn()
// CHECK:STDOUT: %G.ref: %G.type = name_ref G, imports.%Main.G [concrete = constants.%G]
// CHECK:STDOUT: %C.ref.loc12: type = name_ref C, file.%C.decl [concrete = constants.%C]
// CHECK:STDOUT: %G.specific_fn: <specific function> = specific_function %G.ref, @G(constants.%C) [concrete = constants.%G.specific_fn]
// CHECK:STDOUT: %G.call: init %empty_tuple.type = call %G.specific_fn()
// CHECK:STDOUT: return
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: generic fn @F(imports.%Main.import_ref.b3bc94.1: type) [from "library.carbon"] {
// CHECK:STDOUT: %T.patt: %pattern_type = symbolic_binding_pattern T, 0 [symbolic = %T.patt (constants.%T.patt)]
// CHECK:STDOUT: %T: type = symbolic_binding T, 0 [symbolic = %T (constants.%T.67db0b.1)]
// CHECK:STDOUT:
// CHECK:STDOUT: !definition:
// CHECK:STDOUT:
// CHECK:STDOUT: fn;
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: generic fn @G(imports.%Main.import_ref.b3bc94.2: type) [from "library.carbon"] {
// CHECK:STDOUT: %T.patt: %pattern_type = symbolic_binding_pattern T, 0 [symbolic = %T.patt (constants.%T.patt)]
// CHECK:STDOUT: %T: type = symbolic_binding T, 0 [symbolic = %T (constants.%T.67db0b.2)]
// CHECK:STDOUT:
// CHECK:STDOUT: !definition:
// CHECK:STDOUT: %F.specific_fn: <specific function> = specific_function constants.%F, @F(%T) [symbolic = %F.specific_fn (constants.%F.specific_fn.eab)]
// CHECK:STDOUT:
// CHECK:STDOUT: fn;
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @F(constants.%T.67db0b.1) {
// CHECK:STDOUT: %T.patt => constants.%T.patt
// CHECK:STDOUT: %T => constants.%T.67db0b.1
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @F(constants.%C) {
// CHECK:STDOUT: %T.patt => constants.%T.patt
// CHECK:STDOUT: %T => constants.%C
// CHECK:STDOUT:
// CHECK:STDOUT: !definition:
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @F(constants.%T.67db0b.2) {
// CHECK:STDOUT: %T.patt => constants.%T.patt
// CHECK:STDOUT: %T => constants.%T.67db0b.2
// CHECK:STDOUT:
// CHECK:STDOUT: !definition:
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @G(constants.%T.67db0b.2) {
// CHECK:STDOUT: %T.patt => constants.%T.patt
// CHECK:STDOUT: %T => constants.%T.67db0b.2
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @G(constants.%C) {
// CHECK:STDOUT: %T.patt => constants.%T.patt
// CHECK:STDOUT: %T => constants.%C
// CHECK:STDOUT:
// CHECK:STDOUT: !definition:
// CHECK:STDOUT: %F.specific_fn => constants.%F.specific_fn.e0d
// CHECK:STDOUT: }
// CHECK:STDOUT:
Reference in New Issue View Git Blame Copy Permalink