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Fix #7289: Add debug info module flags as-needed and verify if already present (#7336)

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This avoids duplicate module flags when compiling C++ interop with debug
info.

Assisted-by: Gemini via Antigravity
This commit is contained in:
David Blaikie
2026-06-16 03:18:05 +00:00
committed by GitHub
parent d13495771a
commit 88b3605eac
239 changed files with 3975 additions and 3888 deletions
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toolchain/lower/testdata/array/function_param.carbon
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+10 -10
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@@ -63,14 +63,14 @@ fn G() -> i32 {
// CHECK:STDOUT: attributes #0 = { nounwind }
// CHECK:STDOUT: attributes #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
// CHECK:STDOUT:
// CHECK:STDOUT: !llvm.module.flags = !{!0, !1}
// CHECK:STDOUT: !llvm.dbg.cu = !{!2}
// CHECK:STDOUT: !llvm.dbg.cu = !{!0}
// CHECK:STDOUT: !llvm.module.flags = !{!2, !3}
// CHECK:STDOUT:
// CHECK:STDOUT: !0 = !{i32 7, !"Dwarf Version", i32 5}
// CHECK:STDOUT: !1 = !{i32 2, !"Debug Info Version", i32 3}
// CHECK:STDOUT: !2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !3, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
// CHECK:STDOUT: !3 = !DIFile(filename: "function_param.carbon", directory: "")
// CHECK:STDOUT: !4 = distinct !DISubprogram(name: "F", linkageName: "_CF.Main", scope: null, file: !3, line: 13, type: !5, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !9)
// CHECK:STDOUT: !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
// CHECK:STDOUT: !1 = !DIFile(filename: "function_param.carbon", directory: "")
// CHECK:STDOUT: !2 = !{i32 7, !"Dwarf Version", i32 5}
// CHECK:STDOUT: !3 = !{i32 2, !"Debug Info Version", i32 3}
// CHECK:STDOUT: !4 = distinct !DISubprogram(name: "F", linkageName: "_CF.Main", scope: null, file: !1, line: 13, type: !5, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !9)
// CHECK:STDOUT: !5 = !DISubroutineType(types: !6)
// CHECK:STDOUT: !6 = !{!7, !8, !7}
// CHECK:STDOUT: !7 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
@@ -80,19 +80,19 @@ fn G() -> i32 {
// CHECK:STDOUT: !11 = !DILocalVariable(arg: 2, scope: !4, type: !7)
// CHECK:STDOUT: !12 = !DILocation(line: 14, column: 10, scope: !4)
// CHECK:STDOUT: !13 = !DILocation(line: 14, column: 3, scope: !4)
// CHECK:STDOUT: !14 = distinct !DISubprogram(name: "G", linkageName: "_CG.Main", scope: null, file: !3, line: 17, type: !15, spFlags: DISPFlagDefinition, unit: !2)
// CHECK:STDOUT: !14 = distinct !DISubprogram(name: "G", linkageName: "_CG.Main", scope: null, file: !1, line: 17, type: !15, spFlags: DISPFlagDefinition, unit: !0)
// CHECK:STDOUT: !15 = !DISubroutineType(types: !16)
// CHECK:STDOUT: !16 = !{!7}
// CHECK:STDOUT: !17 = !DILocation(line: 18, column: 12, scope: !14)
// CHECK:STDOUT: !18 = !DILocation(line: 18, column: 10, scope: !14)
// CHECK:STDOUT: !19 = !DILocation(line: 18, column: 3, scope: !14)
// CHECK:STDOUT: !20 = distinct !DISubprogram(name: "Op", linkageName: "_COp.5e27612b9dd31a14:core.Destroy.Core", scope: null, file: !3, line: 18, type: !21, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !23)
// CHECK:STDOUT: !20 = distinct !DISubprogram(name: "Op", linkageName: "_COp.5e27612b9dd31a14:core.Destroy.Core", scope: null, file: !1, line: 18, type: !21, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !23)
// CHECK:STDOUT: !21 = !DISubroutineType(types: !22)
// CHECK:STDOUT: !22 = !{null, !7}
// CHECK:STDOUT: !23 = !{!24}
// CHECK:STDOUT: !24 = !DILocalVariable(arg: 1, scope: !20, type: !7)
// CHECK:STDOUT: !25 = !DILocation(line: 18, column: 12, scope: !20)
// CHECK:STDOUT: !26 = distinct !DISubprogram(name: "Op", linkageName: "_COp.412b5e0eb082e888:core.Destroy.Core", scope: null, file: !3, line: 18, type: !27, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !29)
// CHECK:STDOUT: !26 = distinct !DISubprogram(name: "Op", linkageName: "_COp.412b5e0eb082e888:core.Destroy.Core", scope: null, file: !1, line: 18, type: !27, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !29)
// CHECK:STDOUT: !27 = !DISubroutineType(types: !28)
// CHECK:STDOUT: !28 = !{null, !8}
// CHECK:STDOUT: !29 = !{!30}