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carbon-lang/toolchain/check/testdata/impl/impl_forall.carbon
T
Dana Jansens 7c1798d96d Format impl witness instructions as part of the impl (#6485) 
The impl's body block has to end before we make its ImplDecl
instruction, and the witness instructions come later, so they don't end
up in the body block. Currently they just end up in the enclosing (file,
typically, or class) scope block.

Add a new InstBlockId to Impl for holding witness instructions, and
explicitly insert them into that block. Then include those instructions
into the scope of the Impl for naming, and format them into the Impl
right after the body block.

This is based on #6484
2025-12-17 15:46:30 +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
//
// 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/impl/impl_forall.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/impl/impl_forall.carbon
interface Simple {
fn F();
}
impl forall [T:! type] T as Simple {
fn F() {}
}
// CHECK:STDOUT: --- impl_forall.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %Simple.type: type = facet_type <@Simple> [concrete]
// CHECK:STDOUT: %Self: %Simple.type = symbolic_binding Self, 0 [symbolic]
// CHECK:STDOUT: %Simple.F.type: type = fn_type @Simple.F [concrete]
// CHECK:STDOUT: %Simple.F: %Simple.F.type = struct_value () [concrete]
// CHECK:STDOUT: %Simple.assoc_type: type = assoc_entity_type @Simple [concrete]
// CHECK:STDOUT: %assoc0: %Simple.assoc_type = assoc_entity element0, @Simple.%Simple.F.decl [concrete]
// CHECK:STDOUT: %type: type = facet_type <type> [concrete]
// CHECK:STDOUT: %.Self: %type = symbolic_binding .Self [symbolic_self]
// CHECK:STDOUT: %T: type = symbolic_binding T, 0 [symbolic]
// CHECK:STDOUT: %pattern_type: type = pattern_type type [concrete]
// CHECK:STDOUT: %Simple.impl_witness: <witness> = impl_witness @T.as.Simple.impl.%Simple.impl_witness_table, @T.as.Simple.impl(%T) [symbolic]
// CHECK:STDOUT: %T.as.Simple.impl.F.type: type = fn_type @T.as.Simple.impl.F, @T.as.Simple.impl(%T) [symbolic]
// CHECK:STDOUT: %T.as.Simple.impl.F: %T.as.Simple.impl.F.type = struct_value () [symbolic]
// CHECK:STDOUT: %Simple.facet: %Simple.type = facet_value %T, (%Simple.impl_witness) [symbolic]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace [concrete] {
// CHECK:STDOUT: .Simple = %Simple.decl
// CHECK:STDOUT: }
// CHECK:STDOUT: %Simple.decl: type = interface_decl @Simple [concrete = constants.%Simple.type] {} {}
// CHECK:STDOUT: impl_decl @T.as.Simple.impl [concrete] {
// CHECK:STDOUT: %T.patt: %pattern_type = symbolic_binding_pattern T, 0 [concrete]
// CHECK:STDOUT: } {
// CHECK:STDOUT: %T.ref: type = name_ref T, %T.loc19_14.2 [symbolic = %T.loc19_14.1 (constants.%T)]
// CHECK:STDOUT: %Simple.ref: type = name_ref Simple, file.%Simple.decl [concrete = constants.%Simple.type]
// CHECK:STDOUT: %.Self: %type = symbolic_binding .Self [symbolic_self = constants.%.Self]
// CHECK:STDOUT: %T.loc19_14.2: type = symbolic_binding T, 0 [symbolic = %T.loc19_14.1 (constants.%T)]
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: interface @Simple {
// CHECK:STDOUT: %Self: %Simple.type = symbolic_binding Self, 0 [symbolic = constants.%Self]
// CHECK:STDOUT: %Simple.F.decl: %Simple.F.type = fn_decl @Simple.F [concrete = constants.%Simple.F] {} {}
// CHECK:STDOUT: %assoc0: %Simple.assoc_type = assoc_entity element0, %Simple.F.decl [concrete = constants.%assoc0]
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT: .Self = %Self
// CHECK:STDOUT: .F = %assoc0
// CHECK:STDOUT: witness = (%Simple.F.decl)
// CHECK:STDOUT:
// CHECK:STDOUT: !requires:
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: generic impl @T.as.Simple.impl(%T.loc19_14.2: type) {
// CHECK:STDOUT: %T.loc19_14.1: type = symbolic_binding T, 0 [symbolic = %T.loc19_14.1 (constants.%T)]
// CHECK:STDOUT: %Simple.impl_witness.loc19_36.2: <witness> = impl_witness %Simple.impl_witness_table, @T.as.Simple.impl(%T.loc19_14.1) [symbolic = %Simple.impl_witness.loc19_36.2 (constants.%Simple.impl_witness)]
// CHECK:STDOUT:
// CHECK:STDOUT: !definition:
// CHECK:STDOUT: %T.as.Simple.impl.F.type: type = fn_type @T.as.Simple.impl.F, @T.as.Simple.impl(%T.loc19_14.1) [symbolic = %T.as.Simple.impl.F.type (constants.%T.as.Simple.impl.F.type)]
// CHECK:STDOUT: %T.as.Simple.impl.F: @T.as.Simple.impl.%T.as.Simple.impl.F.type (%T.as.Simple.impl.F.type) = struct_value () [symbolic = %T.as.Simple.impl.F (constants.%T.as.Simple.impl.F)]
// CHECK:STDOUT:
// CHECK:STDOUT: impl: %T.ref as %Simple.ref {
// CHECK:STDOUT: %T.as.Simple.impl.F.decl: @T.as.Simple.impl.%T.as.Simple.impl.F.type (%T.as.Simple.impl.F.type) = fn_decl @T.as.Simple.impl.F [symbolic = @T.as.Simple.impl.%T.as.Simple.impl.F (constants.%T.as.Simple.impl.F)] {} {}
// CHECK:STDOUT: %Simple.impl_witness_table = impl_witness_table (%T.as.Simple.impl.F.decl), @T.as.Simple.impl [concrete]
// CHECK:STDOUT: %Simple.impl_witness.loc19_36.1: <witness> = impl_witness %Simple.impl_witness_table, @T.as.Simple.impl(constants.%T) [symbolic = %Simple.impl_witness.loc19_36.2 (constants.%Simple.impl_witness)]
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT: .F = %T.as.Simple.impl.F.decl
// CHECK:STDOUT: witness = %Simple.impl_witness.loc19_36.1
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: generic fn @Simple.F(@Simple.%Self: %Simple.type) {
// CHECK:STDOUT: fn();
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: generic fn @T.as.Simple.impl.F(@T.as.Simple.impl.%T.loc19_14.2: type) {
// CHECK:STDOUT: !definition:
// CHECK:STDOUT:
// CHECK:STDOUT: fn() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: return
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @Simple.F(constants.%Self) {}
// CHECK:STDOUT:
// CHECK:STDOUT: specific @T.as.Simple.impl(constants.%T) {
// CHECK:STDOUT: %T.loc19_14.1 => constants.%T
// CHECK:STDOUT: %Simple.impl_witness.loc19_36.2 => constants.%Simple.impl_witness
// CHECK:STDOUT:
// CHECK:STDOUT: !definition:
// CHECK:STDOUT: %T.as.Simple.impl.F.type => constants.%T.as.Simple.impl.F.type
// CHECK:STDOUT: %T.as.Simple.impl.F => constants.%T.as.Simple.impl.F
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @T.as.Simple.impl.F(constants.%T) {}
// CHECK:STDOUT:
// CHECK:STDOUT: specific @Simple.F(constants.%Simple.facet) {}
// CHECK:STDOUT:
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