mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-09-24 22:02:23 +01:00
Richard Smith
7d89ac98c7
Instead of building one Clang `ASTContext` per compilation, the `--share-cpp-ast` flag causes us to build a single `ASTContext` and share it across all contexts. One new abstraction is added: `CppDomain` represents the Carbon-side view of a Clang AST that might be shared across multiple `SemIR::File`s. This object owns the Clang instance and the AST. For now, we have no isolation between the C++ state exposed to different Carbon compilations, and we have no multiplexing of generated LLVM IR from C++ into different Carbon compilations, so the mode is not usable yet. The plan is to keep it behind a flag until it's ready. Assisted-by: Gemini via Antigravity
74 lines
3.9 KiB
Plaintext
74 lines
3.9 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/int.carbon
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//
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// EXTRA-ARGS: --clang-arg=-g
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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/interop/cpp/debug_info.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/interop/cpp/debug_info.carbon
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import Cpp;
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inline Cpp '''
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int f() { return 42; }
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''';
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fn Call() -> i32 {
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return Cpp.f();
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}
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// CHECK:STDOUT: ; ---
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// CHECK:STDOUT: ; ModuleID = 'debug_info.carbon'
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// CHECK:STDOUT: source_filename = "debug_info.carbon"
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// CHECK:STDOUT: target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
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// CHECK:STDOUT: target triple = "x86_64-unknown-linux-gnu"
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// CHECK:STDOUT:
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// CHECK:STDOUT: ; Function Attrs: mustprogress nounwind uwtable
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// CHECK:STDOUT: define dso_local noundef i32 @_Z1fv() #0 !dbg !14 {
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// CHECK:STDOUT: entry:
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// CHECK:STDOUT: ret i32 42, !dbg !18
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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 i32 @_CCall.Main() #1 !dbg !19 {
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// CHECK:STDOUT: entry:
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// CHECK:STDOUT: %f.call = call i32 @_Z1fv(), !dbg !20
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// CHECK:STDOUT: ret i32 %f.call, !dbg !21
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: attributes #0 = { mustprogress nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
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// CHECK:STDOUT: attributes #1 = { nounwind }
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// CHECK:STDOUT:
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// CHECK:STDOUT: !llvm.dbg.cu = !{!0, !2}
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// CHECK:STDOUT: !llvm.module.flags = !{!4, !5, !6, !7, !8}
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// CHECK:STDOUT: !llvm.errno.tbaa = !{!9}
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// CHECK:STDOUT:
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// CHECK:STDOUT: !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !1, isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, splitDebugInlining: false, nameTableKind: None)
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// CHECK:STDOUT: !1 = !DIFile(filename: "<carbon Cpp imports>", directory: "", checksumkind: CSK_MD5, checksum: "9eecb7db59d16c80417c72d1e1f4fbf1")
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// CHECK:STDOUT: !2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !3, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
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// CHECK:STDOUT: !3 = !DIFile(filename: "debug_info.carbon", directory: "")
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// CHECK:STDOUT: !4 = !{i32 7, !"Dwarf Version", i32 5}
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// CHECK:STDOUT: !5 = !{i32 2, !"Debug Info Version", i32 3}
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// CHECK:STDOUT: !6 = !{i32 8, !"PIC Level", i32 2}
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// CHECK:STDOUT: !7 = !{i32 7, !"PIE Level", i32 2}
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// CHECK:STDOUT: !8 = !{i32 7, !"uwtable", i32 2}
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// CHECK:STDOUT: !9 = !{!10, !11, i64 0}
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// CHECK:STDOUT: !10 = !{!"__libc_errno", !11, i64 0}
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// CHECK:STDOUT: !11 = !{!"int", !12, i64 0}
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// CHECK:STDOUT: !12 = !{!"omnipotent char", !13, i64 0}
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// CHECK:STDOUT: !13 = !{!"Simple C++ TBAA"}
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// CHECK:STDOUT: !14 = distinct !DISubprogram(name: "f", linkageName: "_Z1fv", scope: !3, file: !3, line: 18, type: !15, scopeLine: 18, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, keyInstructions: true)
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// CHECK:STDOUT: !15 = !DISubroutineType(types: !16)
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// CHECK:STDOUT: !16 = !{!17}
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// CHECK:STDOUT: !17 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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// CHECK:STDOUT: !18 = !DILocation(line: 18, column: 11, scope: !14, atomGroup: 1, atomRank: 1)
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// CHECK:STDOUT: !19 = distinct !DISubprogram(name: "Call", linkageName: "_CCall.Main", scope: null, file: !3, line: 21, type: !15, spFlags: DISPFlagDefinition, unit: !2)
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// CHECK:STDOUT: !20 = !DILocation(line: 22, column: 10, scope: !19)
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// CHECK:STDOUT: !21 = !DILocation(line: 22, column: 3, scope: !19)
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// CHECK:STDOUT:
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