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carbon-lang/toolchain/check/testdata/function/generic/redeclare.carbon
T
Richard SmithandJon Ross-Perkins efea072be3 Compute specific constant values. (#4128) 
When forming a specific (previously called a generic instance), evaluate
the eval block of the generic to determine the values of any constants
used in that specific. The majority of the work here is updating
eval.cpp so that it can use the results of prior evaluations in the same
block when computing later values.

Include the computed results in the formatted SemIR output.

---------

Co-authored-by: Jon Ross-Perkins <jperkins@google.com>
2024-07-15 23:59:23 +00:00

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// 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
//
// AUTOUPDATE
// TIP: To test this file alone, run:
// TIP: bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/check/testdata/function/generic/redeclare.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/function/generic/redeclare.carbon
// --- redeclare.carbon
library "redeclare";
fn F(T:! type) -> T*;
fn F(T:! type) -> T* {
return F(T);
}
// --- fail_different_return_type.carbon
library "fail_different_return_type";
fn F(T:! type, U:! type) -> T*;
// CHECK:STDERR: fail_different_return_type.carbon:[[@LINE+7]]:1: ERROR: Function redeclaration differs because return type is `U*`.
// CHECK:STDERR: fn F(T:! type, U:! type) -> U* {
// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// CHECK:STDERR: fail_different_return_type.carbon:[[@LINE-5]]:1: Previously declared with return type `T*`.
// CHECK:STDERR: fn F(T:! type, U:! type) -> T*;
// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// CHECK:STDERR:
fn F(T:! type, U:! type) -> U* {
// CHECK:STDERR: fail_different_return_type.carbon:[[@LINE+11]]:3: ERROR: Cannot implicitly convert from `T*` to `U*`.
// CHECK:STDERR: return F(T);
// CHECK:STDERR: ^~~~~~~~~~~~
// CHECK:STDERR:
// CHECK:STDERR: fail_different_return_type.carbon:[[@LINE+7]]:10: ERROR: 1 argument(s) passed to function expecting 2 argument(s).
// CHECK:STDERR: return F(T);
// CHECK:STDERR: ^~
// CHECK:STDERR: fail_different_return_type.carbon:[[@LINE-17]]:1: Calling function declared here.
// CHECK:STDERR: fn F(T:! type, U:! type) -> T*;
// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// CHECK:STDERR:
return F(T);
}
// --- fail_reorder.carbon
library "fail_reorder";
fn F(T:! type, U:! type) -> T*;
// CHECK:STDERR: fail_reorder.carbon:[[@LINE+7]]:6: ERROR: Redeclaration differs at parameter 1.
// CHECK:STDERR: fn F(U:! type, T:! type) -> T* {
// CHECK:STDERR: ^
// CHECK:STDERR: fail_reorder.carbon:[[@LINE-5]]:6: Previous declaration's corresponding parameter here.
// CHECK:STDERR: fn F(T:! type, U:! type) -> T*;
// CHECK:STDERR: ^
// CHECK:STDERR:
fn F(U:! type, T:! type) -> T* {
// CHECK:STDERR: fail_reorder.carbon:[[@LINE+11]]:3: ERROR: Cannot implicitly convert from `T*` to `T*`.
// CHECK:STDERR: return F(T);
// CHECK:STDERR: ^~~~~~~~~~~~
// CHECK:STDERR:
// CHECK:STDERR: fail_reorder.carbon:[[@LINE+7]]:10: ERROR: 1 argument(s) passed to function expecting 2 argument(s).
// CHECK:STDERR: return F(T);
// CHECK:STDERR: ^~
// CHECK:STDERR: fail_reorder.carbon:[[@LINE-17]]:1: Calling function declared here.
// CHECK:STDERR: fn F(T:! type, U:! type) -> T*;
// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// CHECK:STDERR:
return F(T);
}
// --- fail_rename.carbon
library "fail_rename";
fn F(T:! type, U:! type) -> T*;
// CHECK:STDERR: fail_rename.carbon:[[@LINE+7]]:6: ERROR: Redeclaration differs at parameter 1.
// CHECK:STDERR: fn F(U:! type, T:! type) -> U* {
// CHECK:STDERR: ^
// CHECK:STDERR: fail_rename.carbon:[[@LINE-5]]:6: Previous declaration's corresponding parameter here.
// CHECK:STDERR: fn F(T:! type, U:! type) -> T*;
// CHECK:STDERR: ^
// CHECK:STDERR:
fn F(U:! type, T:! type) -> U* {
// CHECK:STDERR: fail_rename.carbon:[[@LINE+10]]:3: ERROR: Cannot implicitly convert from `T*` to `U*`.
// CHECK:STDERR: return F(T);
// CHECK:STDERR: ^~~~~~~~~~~~
// CHECK:STDERR:
// CHECK:STDERR: fail_rename.carbon:[[@LINE+6]]:10: ERROR: 1 argument(s) passed to function expecting 2 argument(s).
// CHECK:STDERR: return F(T);
// CHECK:STDERR: ^~
// CHECK:STDERR: fail_rename.carbon:[[@LINE-17]]:1: Calling function declared here.
// CHECK:STDERR: fn F(T:! type, U:! type) -> T*;
// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
return F(T);
}
// CHECK:STDOUT: --- redeclare.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %T: type = bind_symbolic_name T 0 [symbolic]
// CHECK:STDOUT: %.1: type = ptr_type %T [symbolic]
// CHECK:STDOUT: %F.type: type = fn_type @F [template]
// CHECK:STDOUT: %.2: type = tuple_type () [template]
// CHECK:STDOUT: %F: %F.type = struct_value () [template]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace [template] {
// CHECK:STDOUT: .Core = %Core
// CHECK:STDOUT: .F = %F.decl.loc4
// CHECK:STDOUT: }
// CHECK:STDOUT: %Core.import = import Core
// CHECK:STDOUT: %Core: <namespace> = namespace %Core.import, [template] {}
// CHECK:STDOUT: %F.decl.loc4: %F.type = fn_decl @F [template = constants.%F] {
// CHECK:STDOUT: %T.loc4_6.1: type = param T
// CHECK:STDOUT: %T.loc4_6.2: type = bind_symbolic_name T 0, %T.loc4_6.1 [symbolic = %T.loc4_6.2 (constants.%T)]
// CHECK:STDOUT: %T.ref.loc4: type = name_ref T, %T.loc4_6.2 [symbolic = %T.loc4_6.2 (constants.%T)]
// CHECK:STDOUT: %.loc4: type = ptr_type %T [symbolic = %.loc4 (constants.%.1)]
// CHECK:STDOUT: %return.var.loc4: ref %.1 = var <return slot>
// CHECK:STDOUT: }
// CHECK:STDOUT: %F.decl.loc6: %F.type = fn_decl @F [template = constants.%F] {
// CHECK:STDOUT: %T.loc6_6.1: type = param T
// CHECK:STDOUT: @F.%T: type = bind_symbolic_name T 0, %T.loc6_6.1 [symbolic = constants.%T]
// CHECK:STDOUT: %T.ref.loc6: type = name_ref T, @F.%T [symbolic = constants.%T]
// CHECK:STDOUT: %.loc6: type = ptr_type %T [symbolic = constants.%.1]
// CHECK:STDOUT: @F.%return: ref %.1 = var <return slot>
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @F(%T: type) -> %.1
// CHECK:STDOUT: generic [file.%T.loc4_6.2: type] {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: %F.ref: %F.type = name_ref F, file.%F.decl.loc4 [template = constants.%F]
// CHECK:STDOUT: %T.ref: type = name_ref T, %T [symbolic = constants.%T]
// CHECK:STDOUT: %F.call: init %.1 = call %F.ref(%T.ref)
// CHECK:STDOUT: %.loc7_14.1: %.1 = value_of_initializer %F.call
// CHECK:STDOUT: %.loc7_14.2: %.1 = converted %F.call, %.loc7_14.1
// CHECK:STDOUT: return %.loc7_14.2
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific file.%F.decl.loc4(constants.%T) {
// CHECK:STDOUT: declaration:
// CHECK:STDOUT: file.%T.loc4_6.2 => constants.%T
// CHECK:STDOUT: file.%.loc4 => constants.%.1
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: --- fail_different_return_type.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %T: type = bind_symbolic_name T 0 [symbolic]
// CHECK:STDOUT: %U: type = bind_symbolic_name U 1 [symbolic]
// CHECK:STDOUT: %.1: type = ptr_type %T [symbolic]
// CHECK:STDOUT: %F.type: type = fn_type @F [template]
// CHECK:STDOUT: %.2: type = tuple_type () [template]
// CHECK:STDOUT: %F: %F.type = struct_value () [template]
// CHECK:STDOUT: %.3: type = ptr_type %U [symbolic]
// CHECK:STDOUT: %.type: type = fn_type @.1 [template]
// CHECK:STDOUT: %.4: %.type = struct_value () [template]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace [template] {
// CHECK:STDOUT: .Core = %Core
// CHECK:STDOUT: .F = %F.decl
// CHECK:STDOUT: }
// CHECK:STDOUT: %Core.import = import Core
// CHECK:STDOUT: %Core: <namespace> = namespace %Core.import, [template] {}
// CHECK:STDOUT: %F.decl: %F.type = fn_decl @F [template = constants.%F] {
// CHECK:STDOUT: %T.loc4_6.1: type = param T
// CHECK:STDOUT: @F.%T: type = bind_symbolic_name T 0, %T.loc4_6.1 [symbolic = @F.%T (constants.%T)]
// CHECK:STDOUT: %U.loc4_16.1: type = param U
// CHECK:STDOUT: @F.%U: type = bind_symbolic_name U 1, %U.loc4_16.1 [symbolic = @F.%U (constants.%U)]
// CHECK:STDOUT: %T.ref: type = name_ref T, @F.%T [symbolic = @F.%T (constants.%T)]
// CHECK:STDOUT: %.loc4: type = ptr_type %T [symbolic = %.loc4 (constants.%.1)]
// CHECK:STDOUT: @F.%return: ref %.1 = var <return slot>
// CHECK:STDOUT: }
// CHECK:STDOUT: %.decl: %.type = fn_decl @.1 [template = constants.%.4] {
// CHECK:STDOUT: %T.loc13_6.1: type = param T
// CHECK:STDOUT: @.1.%T: type = bind_symbolic_name T 0, %T.loc13_6.1 [symbolic = @.1.%T (constants.%T)]
// CHECK:STDOUT: %U.loc13_16.1: type = param U
// CHECK:STDOUT: @.1.%U: type = bind_symbolic_name U 1, %U.loc13_16.1 [symbolic = @.1.%U (constants.%U)]
// CHECK:STDOUT: %U.ref: type = name_ref U, @.1.%U [symbolic = @.1.%U (constants.%U)]
// CHECK:STDOUT: %.loc13: type = ptr_type %U [symbolic = %.loc13 (constants.%.3)]
// CHECK:STDOUT: @.1.%return: ref %.3 = var <return slot>
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @F(%T: type, %U: type) -> %.1
// CHECK:STDOUT: generic [%T: type, %U: type];
// CHECK:STDOUT:
// CHECK:STDOUT: fn @.1(%T: type, %U: type) -> %.3
// CHECK:STDOUT: generic [%T: type, %U: type] {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: %F.ref: %F.type = name_ref F, file.%F.decl [template = constants.%F]
// CHECK:STDOUT: %T.ref: type = name_ref T, %T [symbolic = constants.%T]
// CHECK:STDOUT: %F.call: init %.1 = call %F.ref(<invalid>) [template = <error>]
// CHECK:STDOUT: return <error>
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific file.%F.decl(constants.%T, constants.%U) {
// CHECK:STDOUT: declaration:
// CHECK:STDOUT: @F.%T => constants.%T
// CHECK:STDOUT: @F.%U => constants.%U
// CHECK:STDOUT: file.%.loc4 => constants.%.1
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific file.%.decl(constants.%T, constants.%U) {
// CHECK:STDOUT: declaration:
// CHECK:STDOUT: @.1.%T => constants.%T
// CHECK:STDOUT: @.1.%U => constants.%U
// CHECK:STDOUT: file.%.loc13 => constants.%.3
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: --- fail_reorder.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %T.1: type = bind_symbolic_name T 0 [symbolic]
// CHECK:STDOUT: %U.1: type = bind_symbolic_name U 1 [symbolic]
// CHECK:STDOUT: %.1: type = ptr_type %T.1 [symbolic]
// CHECK:STDOUT: %F.type: type = fn_type @F [template]
// CHECK:STDOUT: %.2: type = tuple_type () [template]
// CHECK:STDOUT: %F: %F.type = struct_value () [template]
// CHECK:STDOUT: %U.2: type = bind_symbolic_name U 0 [symbolic]
// CHECK:STDOUT: %T.2: type = bind_symbolic_name T 1 [symbolic]
// CHECK:STDOUT: %.3: type = ptr_type %T.2 [symbolic]
// CHECK:STDOUT: %.type: type = fn_type @.1 [template]
// CHECK:STDOUT: %.4: %.type = struct_value () [template]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace [template] {
// CHECK:STDOUT: .Core = %Core
// CHECK:STDOUT: .F = %F.decl
// CHECK:STDOUT: }
// CHECK:STDOUT: %Core.import = import Core
// CHECK:STDOUT: %Core: <namespace> = namespace %Core.import, [template] {}
// CHECK:STDOUT: %F.decl: %F.type = fn_decl @F [template = constants.%F] {
// CHECK:STDOUT: %T.loc4_6.1: type = param T
// CHECK:STDOUT: @F.%T: type = bind_symbolic_name T 0, %T.loc4_6.1 [symbolic = @F.%T (constants.%T.1)]
// CHECK:STDOUT: %U.loc4_16.1: type = param U
// CHECK:STDOUT: @F.%U: type = bind_symbolic_name U 1, %U.loc4_16.1 [symbolic = @F.%U (constants.%U.1)]
// CHECK:STDOUT: %T.ref.loc4: type = name_ref T, @F.%T [symbolic = @F.%T (constants.%T.1)]
// CHECK:STDOUT: %.loc4: type = ptr_type %T.1 [symbolic = %.loc4 (constants.%.1)]
// CHECK:STDOUT: @F.%return: ref %.1 = var <return slot>
// CHECK:STDOUT: }
// CHECK:STDOUT: %.decl: %.type = fn_decl @.1 [template = constants.%.4] {
// CHECK:STDOUT: %U.loc13_6.1: type = param U
// CHECK:STDOUT: @.1.%U: type = bind_symbolic_name U 0, %U.loc13_6.1 [symbolic = @.1.%U (constants.%U.2)]
// CHECK:STDOUT: %T.loc13_16.1: type = param T
// CHECK:STDOUT: @.1.%T: type = bind_symbolic_name T 1, %T.loc13_16.1 [symbolic = @.1.%T (constants.%T.2)]
// CHECK:STDOUT: %T.ref.loc13: type = name_ref T, @.1.%T [symbolic = @.1.%T (constants.%T.2)]
// CHECK:STDOUT: %.loc13: type = ptr_type %T.2 [symbolic = %.loc13 (constants.%.3)]
// CHECK:STDOUT: @.1.%return: ref %.3 = var <return slot>
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @F(%T: type, %U: type) -> %.1
// CHECK:STDOUT: generic [%T: type, %U: type];
// CHECK:STDOUT:
// CHECK:STDOUT: fn @.1(%U: type, %T: type) -> %.3
// CHECK:STDOUT: generic [%U: type, %T: type] {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: %F.ref: %F.type = name_ref F, file.%F.decl [template = constants.%F]
// CHECK:STDOUT: %T.ref: type = name_ref T, %T [symbolic = constants.%T.2]
// CHECK:STDOUT: %F.call: init %.1 = call %F.ref(<invalid>) [template = <error>]
// CHECK:STDOUT: return <error>
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific file.%F.decl(constants.%T.1, constants.%U.1) {
// CHECK:STDOUT: declaration:
// CHECK:STDOUT: @F.%T => constants.%T.1
// CHECK:STDOUT: @F.%U => constants.%U.1
// CHECK:STDOUT: file.%.loc4 => constants.%.1
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific file.%.decl(constants.%U.2, constants.%T.2) {
// CHECK:STDOUT: declaration:
// CHECK:STDOUT: @.1.%U => constants.%U.2
// CHECK:STDOUT: @.1.%T => constants.%T.2
// CHECK:STDOUT: file.%.loc13 => constants.%.3
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: --- fail_rename.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %T.1: type = bind_symbolic_name T 0 [symbolic]
// CHECK:STDOUT: %U.1: type = bind_symbolic_name U 1 [symbolic]
// CHECK:STDOUT: %.1: type = ptr_type %T.1 [symbolic]
// CHECK:STDOUT: %F.type: type = fn_type @F [template]
// CHECK:STDOUT: %.2: type = tuple_type () [template]
// CHECK:STDOUT: %F: %F.type = struct_value () [template]
// CHECK:STDOUT: %U.2: type = bind_symbolic_name U 0 [symbolic]
// CHECK:STDOUT: %T.2: type = bind_symbolic_name T 1 [symbolic]
// CHECK:STDOUT: %.3: type = ptr_type %U.2 [symbolic]
// CHECK:STDOUT: %.type: type = fn_type @.1 [template]
// CHECK:STDOUT: %.4: %.type = struct_value () [template]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace [template] {
// CHECK:STDOUT: .Core = %Core
// CHECK:STDOUT: .F = %F.decl
// CHECK:STDOUT: }
// CHECK:STDOUT: %Core.import = import Core
// CHECK:STDOUT: %Core: <namespace> = namespace %Core.import, [template] {}
// CHECK:STDOUT: %F.decl: %F.type = fn_decl @F [template = constants.%F] {
// CHECK:STDOUT: %T.loc4_6.1: type = param T
// CHECK:STDOUT: @F.%T: type = bind_symbolic_name T 0, %T.loc4_6.1 [symbolic = @F.%T (constants.%T.1)]
// CHECK:STDOUT: %U.loc4_16.1: type = param U
// CHECK:STDOUT: @F.%U: type = bind_symbolic_name U 1, %U.loc4_16.1 [symbolic = @F.%U (constants.%U.1)]
// CHECK:STDOUT: %T.ref: type = name_ref T, @F.%T [symbolic = @F.%T (constants.%T.1)]
// CHECK:STDOUT: %.loc4: type = ptr_type %T.1 [symbolic = %.loc4 (constants.%.1)]
// CHECK:STDOUT: @F.%return: ref %.1 = var <return slot>
// CHECK:STDOUT: }
// CHECK:STDOUT: %.decl: %.type = fn_decl @.1 [template = constants.%.4] {
// CHECK:STDOUT: %U.loc13_6.1: type = param U
// CHECK:STDOUT: @.1.%U: type = bind_symbolic_name U 0, %U.loc13_6.1 [symbolic = @.1.%U (constants.%U.2)]
// CHECK:STDOUT: %T.loc13_16.1: type = param T
// CHECK:STDOUT: @.1.%T: type = bind_symbolic_name T 1, %T.loc13_16.1 [symbolic = @.1.%T (constants.%T.2)]
// CHECK:STDOUT: %U.ref: type = name_ref U, @.1.%U [symbolic = @.1.%U (constants.%U.2)]
// CHECK:STDOUT: %.loc13: type = ptr_type %U.2 [symbolic = %.loc13 (constants.%.3)]
// CHECK:STDOUT: @.1.%return: ref %.3 = var <return slot>
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @F(%T: type, %U: type) -> %.1
// CHECK:STDOUT: generic [%T: type, %U: type];
// CHECK:STDOUT:
// CHECK:STDOUT: fn @.1(%U: type, %T: type) -> %.3
// CHECK:STDOUT: generic [%U: type, %T: type] {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: %F.ref: %F.type = name_ref F, file.%F.decl [template = constants.%F]
// CHECK:STDOUT: %T.ref: type = name_ref T, %T [symbolic = constants.%T.2]
// CHECK:STDOUT: %F.call: init %.1 = call %F.ref(<invalid>) [template = <error>]
// CHECK:STDOUT: return <error>
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific file.%F.decl(constants.%T.1, constants.%U.1) {
// CHECK:STDOUT: declaration:
// CHECK:STDOUT: @F.%T => constants.%T.1
// CHECK:STDOUT: @F.%U => constants.%U.1
// CHECK:STDOUT: file.%.loc4 => constants.%.1
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific file.%.decl(constants.%U.2, constants.%T.2) {
// CHECK:STDOUT: declaration:
// CHECK:STDOUT: @.1.%U => constants.%U.2
// CHECK:STDOUT: @.1.%T => constants.%T.2
// CHECK:STDOUT: file.%.loc13 => constants.%.3
// CHECK:STDOUT: }
// CHECK:STDOUT:
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