mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-10-02 17:52:58 +01:00
Christopher Di Bella
f7cd39428e
This change partially implements [PR #7362], which revises how objects are destroyed. It is a partial implementation for two reasons: 1. This change moves `Destroy.Op`'s current behaviour into `Destroy.SubobjectDestroy`, but it doesn't add support for objects with non-trivial destruction. 2. `Destroy.SubobjectDestroy` is a workaround for `require impls SubobjectDestroy`. We aren't able to use the latter until the dependents add their requirements' implementations to their own witness tables. [PR #7362]: https://github.com/carbon-language/carbon-lang/pulls/7362
124 lines
6.2 KiB
Plaintext
124 lines
6.2 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/primitives.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/lower/testdata/function/generic/call_different_associated_const.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/lower/testdata/function/generic/call_different_associated_const.carbon
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// Cannot coalesce the lowering for G specifics, as they have associated contants of different types.
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// Check different functions are still emitted when trying to deduplicate emitted definitons.
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interface I {
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let T: type;
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// TODO: An interface with multiple associated entities is not yet
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// implemented in mangling.
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}
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fn G(generic U: I) {
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var _: U.T*;
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}
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class C {}
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impl C as I where .T = bool {
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}
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class D {}
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impl D as I where .T = i32 {
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}
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fn H() {
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G(C);
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G(D);
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}
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// CHECK:STDOUT: ; ---
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// CHECK:STDOUT: ; ModuleID = 'call_different_associated_const.carbon'
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// CHECK:STDOUT: source_filename = "call_different_associated_const.carbon"
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// CHECK:STDOUT:
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// CHECK:STDOUT: ; Function Attrs: nounwind
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// CHECK:STDOUT: define void @_CH.Main() #0 !dbg !39 {
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// CHECK:STDOUT: entry:
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// CHECK:STDOUT: call void @_CG.Main.0676fa98bb7dbd66(), !dbg !40
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// CHECK:STDOUT: call void @_CG.Main.3e979ea3a37f4bf1(), !dbg !41
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// CHECK:STDOUT: ret void, !dbg !42
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: ; Function Attrs: nounwind
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// CHECK:STDOUT: define weak_odr void @"_CSelfDestruct.bb2383e5e4785e19:core.Destroy.Core"(ptr %self) #0 !dbg !43 {
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// CHECK:STDOUT: entry:
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// CHECK:STDOUT: ret void, !dbg !45
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: ; Function Attrs: nounwind
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// CHECK:STDOUT: define weak_odr void @"_CSelfDestruct.d088c7eb746488be:core.Destroy.Core"(ptr %self) #0 !dbg !47 {
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// CHECK:STDOUT: entry:
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// CHECK:STDOUT: ret void, !dbg !49
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: ; Function Attrs: nounwind
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// CHECK:STDOUT: define linkonce_odr void @_CG.Main.0676fa98bb7dbd66() #0 !dbg !51 {
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// CHECK:STDOUT: entry:
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// CHECK:STDOUT: %_.var = alloca ptr, align 8, !dbg !52
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// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %_.var), !dbg !52
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// CHECK:STDOUT: store ptr poison, ptr %_.var, align 8, !dbg !52
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// CHECK:STDOUT: call void @"_CSelfDestruct.bb2383e5e4785e19:core.Destroy.Core"(ptr %_.var), !dbg !52
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// CHECK:STDOUT: ret void, !dbg !54
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: ; Function Attrs: nounwind
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// CHECK:STDOUT: define linkonce_odr void @_CG.Main.3e979ea3a37f4bf1() #0 !dbg !55 {
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// CHECK:STDOUT: entry:
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// CHECK:STDOUT: %_.var = alloca ptr, align 8, !dbg !56
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// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %_.var), !dbg !56
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// CHECK:STDOUT: store ptr poison, ptr %_.var, align 8, !dbg !56
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// CHECK:STDOUT: call void @"_CSelfDestruct.d088c7eb746488be:core.Destroy.Core"(ptr %_.var), !dbg !56
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// CHECK:STDOUT: ret void, !dbg !58
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: ; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
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// CHECK:STDOUT: declare void @llvm.lifetime.start.p0(ptr captures(none)) #1
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// CHECK:STDOUT:
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// CHECK:STDOUT: ; uselistorder directives
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// CHECK:STDOUT: uselistorder ptr @llvm.lifetime.start.p0, { 1, 0 }
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// CHECK:STDOUT:
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// CHECK:STDOUT: attributes #0 = { nounwind }
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// CHECK:STDOUT: attributes #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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// CHECK:STDOUT:
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// CHECK:STDOUT: !llvm.dbg.cu = !{!33}
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// CHECK:STDOUT: !llvm.module.flags = !{!2, !3}
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// CHECK:STDOUT:
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// CHECK:STDOUT: !2 = !{i32 7, !"Dwarf Version", i32 5}
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// CHECK:STDOUT: !3 = !{i32 2, !"Debug Info Version", i32 3}
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// CHECK:STDOUT: !32 = !DIFile(filename: "call_different_associated_const.carbon", directory: "")
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// CHECK:STDOUT: !33 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !32, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
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// CHECK:STDOUT: !34 = !{null}
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// CHECK:STDOUT: !35 = !DISubroutineType(types: !34)
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// CHECK:STDOUT: !36 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: null, size: 64)
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// CHECK:STDOUT: !37 = !{null, !36}
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// CHECK:STDOUT: !38 = !DISubroutineType(types: !37)
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// CHECK:STDOUT: !39 = distinct !DISubprogram(name: "H", linkageName: "_CH.Main", scope: null, file: !32, line: 35, type: !35, spFlags: DISPFlagDefinition, unit: !33)
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// CHECK:STDOUT: !40 = !DILocation(line: 36, column: 3, scope: !39)
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// CHECK:STDOUT: !41 = !DILocation(line: 37, column: 3, scope: !39)
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// CHECK:STDOUT: !42 = !DILocation(line: 35, column: 1, scope: !39)
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// CHECK:STDOUT: !43 = distinct !DISubprogram(name: "SelfDestruct", linkageName: "_CSelfDestruct.bb2383e5e4785e19:core.Destroy.Core", scope: null, file: !32, line: 23, type: !38, spFlags: DISPFlagDefinition, unit: !33, retainedNodes: !46)
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// CHECK:STDOUT: !44 = !DILocalVariable(arg: 1, scope: !43, type: !36)
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// CHECK:STDOUT: !45 = !DILocation(line: 23, column: 3, scope: !43)
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// CHECK:STDOUT: !46 = !{!44}
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// CHECK:STDOUT: !47 = distinct !DISubprogram(name: "SelfDestruct", linkageName: "_CSelfDestruct.d088c7eb746488be:core.Destroy.Core", scope: null, file: !32, line: 23, type: !38, spFlags: DISPFlagDefinition, unit: !33, retainedNodes: !50)
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// CHECK:STDOUT: !48 = !DILocalVariable(arg: 1, scope: !47, type: !36)
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// CHECK:STDOUT: !49 = !DILocation(line: 23, column: 3, scope: !47)
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// CHECK:STDOUT: !50 = !{!48}
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// CHECK:STDOUT: !51 = distinct !DISubprogram(name: "G", linkageName: "_CG.Main.0676fa98bb7dbd66", scope: null, file: !32, line: 22, type: !35, spFlags: DISPFlagDefinition, unit: !33)
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// CHECK:STDOUT: !52 = !DILocation(line: 23, column: 3, scope: !51)
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// CHECK:STDOUT: !54 = !DILocation(line: 22, column: 1, scope: !51)
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// CHECK:STDOUT: !55 = distinct !DISubprogram(name: "G", linkageName: "_CG.Main.3e979ea3a37f4bf1", scope: null, file: !32, line: 22, type: !35, spFlags: DISPFlagDefinition, unit: !33)
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// CHECK:STDOUT: !56 = !DILocation(line: 23, column: 3, scope: !55)
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// CHECK:STDOUT: !58 = !DILocation(line: 22, column: 1, scope: !55)
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// CHECK:STDOUT:
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