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carbon-lang/toolchain/lower/testdata/function/generic/self_canonical.carbon
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Nicholas Bishop cf66fb8aeb roll llvm to 7024b9e1b423b3c3c6ac76ab6a73cb2c9e4ef842 (#7781) 
Updated patch 0006 to include new files added in
https://github.com/llvm/llvm-project/pull/207543.

Dropped patch 0009 which was upstreamed in:
https://github.com/llvm/llvm-project/pull/190088

Minor updates to patch 0011 for changes upstream.

Minor updates in export.cpp to use `llvm::FoldingSetInsertToken` instead
of a void pointer.
2026-09-14 21:54:09 +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/convert.carbon
// AUTOUPDATE
// TIP: To test this file alone, run:
// TIP: bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/lower/testdata/function/generic/self_canonical.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/lower/testdata/function/generic/self_canonical.carbon
// In this test, specific46 becomes canonical for others. Then, specific42 is
// found to be equivalent to specific46 and it becomes its canonical.
// Then through another equivalence from other specifics that point to
// specific46, specific46 is picked as the canonical. This is fine, we keep the
// chain of equivalences and eventually this is walked to get to specific42.
// The canonical for specific46, should not be updated to self in this case.
// Test that chains of equivalances are properly maintained and walked.
class class_name1 {}
class class_name2 {}
class class_name3 {}
class class_name4 {}
class class_name5 {}
class class_name6 {}
fn third_function[T: type, U: type, V: type](arg1: T, arg2: U, arg3: V);
fn fourth_function[T: type](arg: T);
fn first_function[T: type](arg: T);
fn second_function[T: type, U: type, V: type](arg1: T, arg2: U, arg3: V);
fn third_function[T: type, U: type, V: type](arg1: T, arg2: U, unused arg3: V) {
var local1: class_name2*;
var local2: class_name2*;
third_function(arg1, arg2, local2);
fourth_function(local1);
}
fn unused_1[T: type, U: type, V: type](arg1: T, unused arg2: U, arg3: V) {
var local1: class_name6*;
third_function(arg1, arg3, local1);
}
fn fourth_function[T: type](unused arg: T) {
var local1: class_name5**;
var local2: class_name6*;
first_function(local1);
first_function(local2);
}
fn first_function[T: type](arg: T) {
var local1: class_name4*;
var local2: class_name3*;
second_function(local2, local1, arg);
}
fn unused_2[T: type, U: type](arg1: T, arg2: U) {
var local1: class_name6*;
second_function(arg1, arg2, local1);
}
fn second_function[T: type, U: type, V: type](arg1: T, unused arg2: U, arg3: V) {
var local1: class_name3*;
var local2: class_name4*;
var local3: class_name2*;
second_function(arg3, local3, local2);
third_function(local1, arg3, arg1);
}
fn Main_method_no_template () {
var local1: class_name1*;
first_function(local1);
}
// CHECK:STDOUT: ; ---
// CHECK:STDOUT: ; ModuleID = 'self_canonical.carbon'
// CHECK:STDOUT: source_filename = "self_canonical.carbon"
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_CMain_method_no_template.Main() #0 !dbg !18 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %local1.var = alloca ptr, align 8, !dbg !19
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %local1.var), !dbg !19
// CHECK:STDOUT: store ptr poison, ptr %local1.var, align 8, !dbg !19
// CHECK:STDOUT: %.loc82 = load ptr, ptr %local1.var, align 8, !dbg !21
// CHECK:STDOUT: call void @_Cfirst_function.Main.ee57965601b4d646(ptr %.loc82), !dbg !22
// CHECK:STDOUT: ret void, !dbg !26
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
// CHECK:STDOUT: declare void @llvm.lifetime.start.p0(ptr captures(none)) #1
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define linkonce_odr void @_Cfourth_function.Main.4da09b2222fc2513(ptr %arg) #0 !dbg !168 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %local1.var = alloca ptr, align 8, !dbg !171
// CHECK:STDOUT: %local2.var = alloca ptr, align 8, !dbg !173
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %local1.var), !dbg !171
// CHECK:STDOUT: store ptr poison, ptr %local1.var, align 8, !dbg !171
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %local2.var), !dbg !173
// CHECK:STDOUT: store ptr poison, ptr %local2.var, align 8, !dbg !173
// CHECK:STDOUT: %.loc53 = load ptr, ptr %local1.var, align 8, !dbg !175
// CHECK:STDOUT: call void @_Cfirst_function.Main.ee57965601b4d646(ptr %.loc53), !dbg !176
// CHECK:STDOUT: %.loc54 = load ptr, ptr %local2.var, align 8, !dbg !177
// CHECK:STDOUT: call void @_Cfirst_function.Main.ee57965601b4d646(ptr %.loc54), !dbg !178
// CHECK:STDOUT: ret void, !dbg !179
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define linkonce_odr void @_Cfirst_function.Main.ee57965601b4d646(ptr %arg) #0 !dbg !219 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %local1.var = alloca ptr, align 8, !dbg !222
// CHECK:STDOUT: %local2.var = alloca ptr, align 8, !dbg !224
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %local1.var), !dbg !222
// CHECK:STDOUT: store ptr poison, ptr %local1.var, align 8, !dbg !222
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %local2.var), !dbg !224
// CHECK:STDOUT: store ptr poison, ptr %local2.var, align 8, !dbg !224
// CHECK:STDOUT: %.loc61_19 = load ptr, ptr %local2.var, align 8, !dbg !226
// CHECK:STDOUT: %.loc61_27 = load ptr, ptr %local1.var, align 8, !dbg !227
// CHECK:STDOUT: call void @_Csecond_function.Main.efd9fcdf727c9de5(ptr %.loc61_19, ptr %.loc61_27, ptr %arg), !dbg !229
// CHECK:STDOUT: ret void, !dbg !230
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define linkonce_odr void @_Csecond_function.Main.efd9fcdf727c9de5(ptr %arg1, ptr %arg2, ptr %arg3) #0 !dbg !245 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %local1.var = alloca ptr, align 8, !dbg !252
// CHECK:STDOUT: %local2.var = alloca ptr, align 8, !dbg !254
// CHECK:STDOUT: %local3.var = alloca ptr, align 8, !dbg !256
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %local1.var), !dbg !252
// CHECK:STDOUT: store ptr poison, ptr %local1.var, align 8, !dbg !252
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %local2.var), !dbg !254
// CHECK:STDOUT: store ptr poison, ptr %local2.var, align 8, !dbg !254
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %local3.var), !dbg !256
// CHECK:STDOUT: store ptr poison, ptr %local3.var, align 8, !dbg !256
// CHECK:STDOUT: %.loc75_25 = load ptr, ptr %local3.var, align 8, !dbg !259
// CHECK:STDOUT: %.loc75_33 = load ptr, ptr %local2.var, align 8, !dbg !260
// CHECK:STDOUT: call void @_Csecond_function.Main.efd9fcdf727c9de5(ptr %arg3, ptr %.loc75_25, ptr %.loc75_33), !dbg !261
// CHECK:STDOUT: %.loc76 = load ptr, ptr %local1.var, align 8, !dbg !262
// CHECK:STDOUT: call void @_Cthird_function.Main.1c39a3b349bf66b6(ptr %.loc76, ptr %arg3, ptr %arg1), !dbg !265
// CHECK:STDOUT: ret void, !dbg !266
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define linkonce_odr void @_Cthird_function.Main.1c39a3b349bf66b6(ptr %arg1, ptr %arg2, ptr %arg3) #0 !dbg !314 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %local1.var = alloca ptr, align 8, !dbg !321
// CHECK:STDOUT: %local2.var = alloca ptr, align 8, !dbg !323
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %local1.var), !dbg !321
// CHECK:STDOUT: store ptr poison, ptr %local1.var, align 8, !dbg !321
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %local2.var), !dbg !323
// CHECK:STDOUT: store ptr poison, ptr %local2.var, align 8, !dbg !323
// CHECK:STDOUT: %.loc39 = load ptr, ptr %local2.var, align 8, !dbg !327
// CHECK:STDOUT: call void @_Cthird_function.Main.1c39a3b349bf66b6(ptr %arg1, ptr %arg2, ptr %.loc39), !dbg !328
// CHECK:STDOUT: %.loc40 = load ptr, ptr %local1.var, align 8, !dbg !329
// CHECK:STDOUT: call void @_Cfourth_function.Main.4da09b2222fc2513(ptr %.loc40), !dbg !330
// CHECK:STDOUT: ret void, !dbg !331
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; uselistorder directives
// CHECK:STDOUT: uselistorder ptr @_Cfirst_function.Main.ee57965601b4d646, { 1, 2, 0 }
// CHECK:STDOUT:
// CHECK:STDOUT: attributes #0 = { nounwind }
// CHECK:STDOUT: attributes #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
// CHECK:STDOUT:
// CHECK:STDOUT: !llvm.dbg.cu = !{!15}
// CHECK:STDOUT: !llvm.module.flags = !{!2, !3}
// CHECK:STDOUT:
// CHECK:STDOUT: !2 = !{i32 7, !"Dwarf Version", i32 5}
// CHECK:STDOUT: !3 = !{i32 2, !"Debug Info Version", i32 3}
// CHECK:STDOUT: !14 = !DIFile(filename: "self_canonical.carbon", directory: "")
// CHECK:STDOUT: !15 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !14, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
// CHECK:STDOUT: !16 = !{null}
// CHECK:STDOUT: !17 = !DISubroutineType(types: !16)
// CHECK:STDOUT: !18 = distinct !DISubprogram(name: "Main_method_no_template", linkageName: "_CMain_method_no_template.Main", scope: null, file: !14, line: 79, type: !17, spFlags: DISPFlagDefinition, unit: !15)
// CHECK:STDOUT: !19 = !DILocation(line: 80, column: 3, scope: !18)
// CHECK:STDOUT: !21 = !DILocation(line: 82, column: 18, scope: !18)
// CHECK:STDOUT: !22 = !DILocation(line: 82, column: 3, scope: !18)
// CHECK:STDOUT: !23 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: null, size: 64)
// CHECK:STDOUT: !24 = !{null, !23}
// CHECK:STDOUT: !25 = !DISubroutineType(types: !24)
// CHECK:STDOUT: !26 = !DILocation(line: 79, column: 1, scope: !18)
// CHECK:STDOUT: !38 = !{null, !23, !23, !23}
// CHECK:STDOUT: !39 = !DISubroutineType(types: !38)
// CHECK:STDOUT: !168 = distinct !DISubprogram(name: "fourth_function", linkageName: "_Cfourth_function.Main.4da09b2222fc2513", scope: null, file: !14, line: 49, type: !25, spFlags: DISPFlagDefinition, unit: !15, retainedNodes: !180)
// CHECK:STDOUT: !169 = !DILocalVariable(arg: 1, scope: !168, type: !23)
// CHECK:STDOUT: !171 = !DILocation(line: 50, column: 3, scope: !168)
// CHECK:STDOUT: !173 = !DILocation(line: 51, column: 3, scope: !168)
// CHECK:STDOUT: !175 = !DILocation(line: 53, column: 18, scope: !168)
// CHECK:STDOUT: !176 = !DILocation(line: 53, column: 3, scope: !168)
// CHECK:STDOUT: !177 = !DILocation(line: 54, column: 18, scope: !168)
// CHECK:STDOUT: !178 = !DILocation(line: 54, column: 3, scope: !168)
// CHECK:STDOUT: !179 = !DILocation(line: 49, column: 1, scope: !168)
// CHECK:STDOUT: !180 = !{!169}
// CHECK:STDOUT: !219 = distinct !DISubprogram(name: "first_function", linkageName: "_Cfirst_function.Main.ee57965601b4d646", scope: null, file: !14, line: 57, type: !25, spFlags: DISPFlagDefinition, unit: !15, retainedNodes: !231)
// CHECK:STDOUT: !220 = !DILocalVariable(arg: 1, scope: !219, type: !23)
// CHECK:STDOUT: !222 = !DILocation(line: 58, column: 3, scope: !219)
// CHECK:STDOUT: !224 = !DILocation(line: 59, column: 3, scope: !219)
// CHECK:STDOUT: !226 = !DILocation(line: 61, column: 19, scope: !219)
// CHECK:STDOUT: !227 = !DILocation(line: 61, column: 27, scope: !219)
// CHECK:STDOUT: !229 = !DILocation(line: 61, column: 3, scope: !219)
// CHECK:STDOUT: !230 = !DILocation(line: 57, column: 1, scope: !219)
// CHECK:STDOUT: !231 = !{!220}
// CHECK:STDOUT: !245 = distinct !DISubprogram(name: "second_function", linkageName: "_Csecond_function.Main.efd9fcdf727c9de5", scope: null, file: !14, line: 70, type: !39, spFlags: DISPFlagDefinition, unit: !15, retainedNodes: !267)
// CHECK:STDOUT: !246 = !DILocalVariable(arg: 1, scope: !245, type: !23)
// CHECK:STDOUT: !247 = !DILocalVariable(arg: 2, scope: !245, type: !23)
// CHECK:STDOUT: !248 = !DILocalVariable(arg: 3, scope: !245, type: !23)
// CHECK:STDOUT: !252 = !DILocation(line: 71, column: 3, scope: !245)
// CHECK:STDOUT: !254 = !DILocation(line: 72, column: 3, scope: !245)
// CHECK:STDOUT: !256 = !DILocation(line: 73, column: 3, scope: !245)
// CHECK:STDOUT: !259 = !DILocation(line: 75, column: 25, scope: !245)
// CHECK:STDOUT: !260 = !DILocation(line: 75, column: 33, scope: !245)
// CHECK:STDOUT: !261 = !DILocation(line: 75, column: 3, scope: !245)
// CHECK:STDOUT: !262 = !DILocation(line: 76, column: 18, scope: !245)
// CHECK:STDOUT: !265 = !DILocation(line: 76, column: 3, scope: !245)
// CHECK:STDOUT: !266 = !DILocation(line: 70, column: 1, scope: !245)
// CHECK:STDOUT: !267 = !{!246, !247, !248}
// CHECK:STDOUT: !314 = distinct !DISubprogram(name: "third_function", linkageName: "_Cthird_function.Main.1c39a3b349bf66b6", scope: null, file: !14, line: 35, type: !39, spFlags: DISPFlagDefinition, unit: !15, retainedNodes: !332)
// CHECK:STDOUT: !315 = !DILocalVariable(arg: 1, scope: !314, type: !23)
// CHECK:STDOUT: !316 = !DILocalVariable(arg: 2, scope: !314, type: !23)
// CHECK:STDOUT: !317 = !DILocalVariable(arg: 3, scope: !314, type: !23)
// CHECK:STDOUT: !321 = !DILocation(line: 36, column: 3, scope: !314)
// CHECK:STDOUT: !323 = !DILocation(line: 37, column: 3, scope: !314)
// CHECK:STDOUT: !327 = !DILocation(line: 39, column: 30, scope: !314)
// CHECK:STDOUT: !328 = !DILocation(line: 39, column: 3, scope: !314)
// CHECK:STDOUT: !329 = !DILocation(line: 40, column: 19, scope: !314)
// CHECK:STDOUT: !330 = !DILocation(line: 40, column: 3, scope: !314)
// CHECK:STDOUT: !331 = !DILocation(line: 35, column: 1, scope: !314)
// CHECK:STDOUT: !332 = !{!315, !316, !317}
// CHECK:STDOUT:
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