[JMCInstrument] infer proper path style based on debug info

[ychen]

Summary

By default, the path style is decided by the host. This patch makes JMC
uses the path style used by the SP directory. This makes JMC output
host-independent.

Fixes: https://github.com/llvm/llvm-project/issues/54219

[rnk]

lgtm, thanks!

llvm/lib/CodeGen/JMCInstrumenter.cpp

72

I see, I was hoping we already had an auto-detector routine. We have an existing one in the VFS code, but it's inaccessible from here, and your logic seems slightly better:
https://github.com/llvm/llvm-project/blob/main/llvm/lib/Support/VirtualFileSystem.cpp#L1059

llvm/test/Instrumentation/JustMyCode/jmc-instrument.ll

147

Thanks for the tests

[ychen]

• search for backslash in SP filename
• add a test case

[ychen]

llvm/lib/CodeGen/JMCInstrumenter.cpp

72

yeah, I considered hoisting it to Path.h but it does not seem suitable for all cases for JMC and I'm afraid of breaking lldb by touching path related code. We should definitely consider a common path style detection function if there are more users in the future.

llvm/lib/CodeGen/JMCInstrumenter.cpp

INITIALIZE_PASS(
     false, false)
 
 ModulePass *llvm::createJMCInstrumenterPass() { return new JMCInstrumenter(); }
 
 namespace {
 const char CheckFunctionName[] = "__CheckForDebuggerJustMyCode";
 
 std::string getFlagName(DISubprogram &SP, bool UseX86FastCall) {
+  // absolute windows path:           windows_backslash
+  // relative windows backslash path: windows_backslash
+  // relative windows slash path:     posix
+  // absolute posix path:             posix
+  // relative posix path:             posix
+  sys::path::Style PathStyle =
+      has_root_name(SP.getDirectory(), sys::path::Style::windows_backslash) ||
+              SP.getDirectory().find("\\") != StringRef::npos ||
+              SP.getFilename().find("\\") != StringRef::npos
+          ? sys::path::Style::windows_backslash
+          : sys::path::Style::posix;
   // Best effort path normalization. This is to guarantee an unique flag symbol
   // is produced for the same directory. Some builds may want to use relative
   // paths, or paths with a specific prefix (see the -fdebug-compilation-dir
   // flag), so only hash paths in debuginfo. Don't expand them to absolute
   // paths.
   SmallString<256> FilePath(SP.getDirectory());
-  sys::path::append(FilePath, SP.getFilename());
-  sys::path::native(FilePath);
-  sys::path::remove_dots(FilePath, /*remove_dot_dot=*/true);
+  sys::path::append(FilePath, PathStyle, SP.getFilename());
+  sys::path::native(FilePath, PathStyle);
+  sys::path::remove_dots(FilePath, /*remove_dot_dot=*/true, PathStyle);
 
   // The naming convention for the flag name is __<hash>_<file name> with '.' in
   // <file name> replaced with '@'. For example C:\file.any.c would have a flag
   // __D032E919_file@any@c. The naming convention match MSVC's format however
   // the match is not required to make JMC work. The hashing function used here
   // is different from MSVC's.
 
   std::string Suffix;
-  for (auto C : sys::path::filename(FilePath))
+  for (auto C : sys::path::filename(FilePath, PathStyle))
     Suffix.push_back(C == '.' ? '@' : C);
 
-  sys::path::remove_filename(FilePath);
+  sys::path::remove_filename(FilePath, PathStyle);
   return (UseX86FastCall ? "_" : "__") +
          utohexstr(djbHash(FilePath), /*LowerCase=*/false,
                    /*Width=*/8) +
          "_" + Suffix;
 }
 
 void attachDebugInfo(GlobalVariable &GV, DISubprogram &SP) {
   Module &M = *GV.getParent();

llvm/test/Instrumentation/JustMyCode/jmc-instrument-elf.ll

-; REQUIRES: system-linux
 ; RUN: opt -jmc-instrument -mtriple=x86_64-unknown-linux-gnu  -S < %s | FileCheck %s
 
 ; CHECK: @"__7DF23CF5_x@c" = internal unnamed_addr global i8 1, section ".just.my.code", align 1, !dbg !0
-; CHECK: @"__A85D9D03_x@c" = internal unnamed_addr global i8 1, section ".just.my.code", align 1, !dbg !5
+; CHECK: @"__A8764FDD_x@c" = internal unnamed_addr global i8 1, section ".just.my.code", align 1, !dbg !5
 
 ; CHECK: define void @l1() !dbg !12 {
 ; CHECK:   call void @__CheckForDebuggerJustMyCode(i8* noundef @"__7DF23CF5_x@c")
 ; CHECK:   ret void
 ; CHECK: }
 
 ; CHECK: define void @l2() !dbg !16 {
 ; CHECK:   call void @__CheckForDebuggerJustMyCode(i8* noundef @"__7DF23CF5_x@c")
 ; CHECK:   ret void
 ; CHECK: }
 
 ; CHECK: define void @w1() !dbg !18 {
-; CHECK:   call void @__CheckForDebuggerJustMyCode(i8* noundef @"__A85D9D03_x@c")
+; CHECK:   call void @__CheckForDebuggerJustMyCode(i8* noundef @"__A8764FDD_x@c")
 ; CHECK:   ret void
 ; CHECK: }
 
 ; CHECK: define void @w2() !dbg !19 {
-; CHECK:   call void @__CheckForDebuggerJustMyCode(i8* noundef @"__A85D9D03_x@c")
+; CHECK:   call void @__CheckForDebuggerJustMyCode(i8* noundef @"__A8764FDD_x@c")
 ; CHECK:   ret void
 ; CHECK: }
 
 ; CHECK: define void @w3() !dbg !21 {
-; CHECK:   call void @__CheckForDebuggerJustMyCode(i8* noundef @"__A85D9D03_x@c")
+; CHECK:   call void @__CheckForDebuggerJustMyCode(i8* noundef @"__A8764FDD_x@c")
 ; CHECK:   ret void
 ; CHECK: }
 
 ; CHECK: define void @w4() !dbg !23 {
-; CHECK:   call void @__CheckForDebuggerJustMyCode(i8* noundef @"__A85D9D03_x@c")
+; CHECK:   call void @__CheckForDebuggerJustMyCode(i8* noundef @"__A8764FDD_x@c")
 ; CHECK:   ret void
 ; CHECK: }
 
 ; CHECK: define weak void @__CheckForDebuggerJustMyCode(i8* noundef %0) unnamed_addr {
 ; CHECK:   ret void
 ; CHECK: }
 
 ; CHECK: !llvm.dbg.cu = !{!2}
 ; CHECK: !llvm.module.flags = !{!9, !10}
 ; CHECK: !llvm.ident = !{!11}
 
 ; CHECK: !0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
 ; CHECK: !1 = distinct !DIGlobalVariable(name: "__7DF23CF5_x@c", scope: !2, file: !3, type: !8, isLocal: true, isDefinition: true)
 ; CHECK: !2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, globals: !4, splitDebugInlining: false, nameTableKind: None)
 ; CHECK: !3 = !DIFile(filename: "a/x.c", directory: "/tmp")
 ; CHECK: !4 = !{!0, !5}
 ; CHECK: !5 = !DIGlobalVariableExpression(var: !6, expr: !DIExpression())
-; CHECK: !6 = distinct !DIGlobalVariable(name: "__A85D9D03_x@c", scope: !2, file: !7, type: !8, isLocal: true, isDefinition: true)
+; CHECK: !6 = distinct !DIGlobalVariable(name: "__A8764FDD_x@c", scope: !2, file: !7, type: !8, isLocal: true, isDefinition: true)
 ; CHECK: !7 = !DIFile(filename: "./x.c", directory: "C:\\\\a\\\\b\\\\")
 ; CHECK: !8 = !DIBasicType(name: "unsigned char", size: 8, encoding: DW_ATE_unsigned_char, flags: DIFlagArtificial)
 ; CHECK: !9 = !{i32 2, !"CodeView", i32 1}
 ; CHECK: !10 = !{i32 2, !"Debug Info Version", i32 3}
 ; CHECK: !11 = !{!"clang"}
 ; CHECK: !12 = distinct !DISubprogram(name: "f", scope: !3, file: !3, line: 1, type: !13, scopeLine: 1, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !15)
 ; CHECK: !13 = !DISubroutineType(types: !14)
 ; CHECK: !14 = !{null}

llvm/test/Instrumentation/JustMyCode/jmc-instrument-x86.ll

-; REQUIRES: system-windows
 ; RUN: opt -jmc-instrument -S < %s | FileCheck %s
 
 ; CHECK: $_JustMyCode_Default = comdat any
 
 ; CHECK: @"_A8764FDD_x@c" = internal unnamed_addr global i8 1, section ".msvcjmc", align 1, !dbg !0
 ; CHECK: @llvm.used = appending global [1 x i8*] [i8* bitcast (void (i8*)* @_JustMyCode_Default to i8*)], section "llvm.metadata"
 
 ; CHECK: define void @w1() #0 !dbg !10 {

llvm/test/Instrumentation/JustMyCode/jmc-instrument.ll

-; REQUIRES: system-windows
 ; RUN: opt -jmc-instrument -mtriple=x86_64-pc-windows-msvc  -S < %s | FileCheck %s
 ; RUN: opt -jmc-instrument -mtriple=aarch64-pc-windows-msvc -S < %s | FileCheck %s
 ; RUN: opt -jmc-instrument -mtriple=arm-pc-windows-msvc     -S < %s | FileCheck %s
 
 ; CHECK: $__JustMyCode_Default = comdat any
 
-; CHECK: @"__E6EA670F_x@c" = internal unnamed_addr global i8 1, section ".msvcjmc", align 1, !dbg !0
+; CHECK: @"__7DF23CF5_x@c" = internal unnamed_addr global i8 1, section ".msvcjmc", align 1, !dbg !0
 ; CHECK: @llvm.used = appending global [1 x i8*] [i8* bitcast (void (i8*)* @__JustMyCode_Default to i8*)], section "llvm.metadata"
 ; CHECK: @"__A8764FDD_x@c" = internal unnamed_addr global i8 1, section ".msvcjmc", align 1, !dbg !5
+; CHECK: @"__0C712A50_x@c" = internal unnamed_addr global i8 1, section ".msvcjmc", align 1, !dbg !9
+; CHECK: @"__A3605329_x@c" = internal unnamed_addr global i8 1, section ".msvcjmc", align 1, !dbg !12
 
-; CHECK: define void @l1() !dbg !13 {
-; CHECK:   call void @__CheckForDebuggerJustMyCode(i8* noundef @"__E6EA670F_x@c")
+; CHECK: define void @l1() !dbg !19 {
+; CHECK:   call void @__CheckForDebuggerJustMyCode(i8* noundef @"__7DF23CF5_x@c")
 ; CHECK:   ret void
 ; CHECK: }
 
-; CHECK: define void @l2() !dbg !17 {
-; CHECK:   call void @__CheckForDebuggerJustMyCode(i8* noundef @"__E6EA670F_x@c")
+; CHECK: define void @l2() !dbg !23 {
+; CHECK:   call void @__CheckForDebuggerJustMyCode(i8* noundef @"__7DF23CF5_x@c")
 ; CHECK:   ret void
 ; CHECK: }
 
-; CHECK: define void @w1() !dbg !19 {
+; CHECK: define void @w1() !dbg !25 {
 ; CHECK:   call void @__CheckForDebuggerJustMyCode(i8* noundef @"__A8764FDD_x@c")
 ; CHECK:   ret void
 ; CHECK: }
 
-; CHECK: define void @w2() !dbg !20 {
+; CHECK: define void @w2() !dbg !26 {
 ; CHECK:   call void @__CheckForDebuggerJustMyCode(i8* noundef @"__A8764FDD_x@c")
 ; CHECK:   ret void
 ; CHECK: }
 
-; CHECK: define void @w3() !dbg !22 {
+; CHECK: define void @w3() !dbg !28 {
 ; CHECK:   call void @__CheckForDebuggerJustMyCode(i8* noundef @"__A8764FDD_x@c")
 ; CHECK:   ret void
 ; CHECK: }
 
-; CHECK: define void @w4() !dbg !24 {
+; CHECK: define void @w4() !dbg !30 {
 ; CHECK:   call void @__CheckForDebuggerJustMyCode(i8* noundef @"__A8764FDD_x@c")
 ; CHECK:   ret void
 ; CHECK: }
 
+; CHECK: define void @w5() !dbg !32 {
+; CHECK:   call void @__CheckForDebuggerJustMyCode(i8* noundef @"__0C712A50_x@c")
+; CHECK:   ret void
+; CHECK: }
+
+; CHECK: define void @w6() !dbg !33 {
+; CHECK:   call void @__CheckForDebuggerJustMyCode(i8* noundef @"__A3605329_x@c")
+; CHECK:   ret void
+; CHECK: }
+
+; CHECK: define void @w7() !dbg !34 {
+; CHECK:   call void @__CheckForDebuggerJustMyCode(i8* noundef @"__0C712A50_x@c")
+; CHECK:   ret void
+; CHECK: }
+
 ; CHECK: define void @__JustMyCode_Default(i8* noundef %0) unnamed_addr comdat {
 ; CHECK:   ret void
 ; CHECK: }
 
 ; CHECK: declare void @__CheckForDebuggerJustMyCode(i8* noundef) unnamed_addr
 
-; CHECK: !llvm.linker.options = !{!12}
+; CHECK: !llvm.linker.options = !{!18}
 
 ; CHECK: !0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
-; CHECK: !1 = distinct !DIGlobalVariable(name: "__E6EA670F_x@c", scope: !2, file: !3, type: !8, isLocal: true, isDefinition: true)
+; CHECK: !1 = distinct !DIGlobalVariable(name: "__7DF23CF5_x@c", scope: !2, file: !3, type: !8, isLocal: true, isDefinition: true)
 ; CHECK: !2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, globals: !4, splitDebugInlining: false, nameTableKind: None)
 ; CHECK: !3 = !DIFile(filename: "a/x.c", directory: "/tmp")
-; CHECK: !4 = !{!0, !5}
+; CHECK: !4 = !{!0, !5, !9, !12}
 ; CHECK: !5 = !DIGlobalVariableExpression(var: !6, expr: !DIExpression())
 ; CHECK: !6 = distinct !DIGlobalVariable(name: "__A8764FDD_x@c", scope: !2, file: !7, type: !8, isLocal: true, isDefinition: true)
 ; CHECK: !7 = !DIFile(filename: "./x.c", directory: "C:\\\\a\\\\b\\\\")
 ; CHECK: !8 = !DIBasicType(name: "unsigned char", size: 8, encoding: DW_ATE_unsigned_char, flags: DIFlagArtificial)
-; CHECK: !9 = !{i32 2, !"CodeView", i32 1}
-; CHECK: !10 = !{i32 2, !"Debug Info Version", i32 3}
-; CHECK: !11 = !{!"clang"}
-; CHECK: !12 = !{!"/alternatename:__CheckForDebuggerJustMyCode=__JustMyCode_Default"}
-; CHECK: !13 = distinct !DISubprogram(name: "f", scope: !3, file: !3, line: 1, type: !14, scopeLine: 1, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !16)
-; CHECK: !14 = !DISubroutineType(types: !15)
-; CHECK: !15 = !{null}
-; CHECK: !16 = !{}
-; CHECK: !17 = distinct !DISubprogram(name: "f", scope: !18, file: !18, line: 1, type: !14, scopeLine: 1, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !16)
-; CHECK: !18 = !DIFile(filename: "x.c", directory: "/tmp/a")
-; CHECK: !19 = distinct !DISubprogram(name: "f", scope: !7, file: !7, line: 1, type: !14, scopeLine: 1, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !16)
-; CHECK: !20 = distinct !DISubprogram(name: "f", scope: !21, file: !21, line: 1, type: !14, scopeLine: 1, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !16)
-; CHECK: !21 = !DIFile(filename: "./b\\x.c", directory: "C:\\\\a\\\\")
-; CHECK: !22 = distinct !DISubprogram(name: "f", scope: !23, file: !23, line: 1, type: !14, scopeLine: 1, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !16)
-; CHECK: !23 = !DIFile(filename: "./b/x.c", directory: "C:\\\\a\\\\")
-; CHECK: !24 = distinct !DISubprogram(name: "f", scope: !25, file: !25, line: 1, type: !14, scopeLine: 1, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !16)
-; CHECK: !25 = !DIFile(filename: "./b/./../b/x.c", directory: "C:\\\\a")
+; CHECK: !9 = !DIGlobalVariableExpression(var: !10, expr: !DIExpression())
+; CHECK: !10 = distinct !DIGlobalVariable(name: "__0C712A50_x@c", scope: !2, file: !11, type: !8, isLocal: true, isDefinition: true)
+; CHECK: !11 = !DIFile(filename: "./b/.\\../b/x.c", directory: "a\\d/p")
+; CHECK: !12 = !DIGlobalVariableExpression(var: !13, expr: !DIExpression())
+; CHECK: !13 = distinct !DIGlobalVariable(name: "__A3605329_x@c", scope: !2, file: !14, type: !8, isLocal: true, isDefinition: true)
+; CHECK: !14 = !DIFile(filename: "./b/./../b/x.c", directory: "a/d/p")
+; CHECK: !15 = !{i32 2, !"CodeView", i32 1}
+; CHECK: !16 = !{i32 2, !"Debug Info Version", i32 3}
+; CHECK: !17 = !{!"clang"}
+; CHECK: !18 = !{!"/alternatename:__CheckForDebuggerJustMyCode=__JustMyCode_Default"}
+; CHECK: !19 = distinct !DISubprogram(name: "f", scope: !3, file: !3, line: 1, type: !20, scopeLine: 1, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !22)
+; CHECK: !20 = !DISubroutineType(types: !21)
+; CHECK: !21 = !{null}
+; CHECK: !22 = !{}
+; CHECK: !23 = distinct !DISubprogram(name: "f", scope: !24, file: !24, line: 1, type: !20, scopeLine: 1, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !22)
+; CHECK: !24 = !DIFile(filename: "x.c", directory: "/tmp/a")
+; CHECK: !25 = distinct !DISubprogram(name: "f", scope: !7, file: !7, line: 1, type: !20, scopeLine: 1, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !22)
+; CHECK: !26 = distinct !DISubprogram(name: "f", scope: !27, file: !27, line: 1, type: !20, scopeLine: 1, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !22)
+; CHECK: !27 = !DIFile(filename: "./b\\x.c", directory: "C:\\\\a\\\\")
+; CHECK: !28 = distinct !DISubprogram(name: "f", scope: !29, file: !29, line: 1, type: !20, scopeLine: 1, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !22)
+; CHECK: !29 = !DIFile(filename: "./b/x.c", directory: "C:\\\\a\\\\")
+; CHECK: !30 = distinct !DISubprogram(name: "f", scope: !31, file: !31, line: 1, type: !20, scopeLine: 1, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !22)
+; CHECK: !31 = !DIFile(filename: "./b/./../b/x.c", directory: "C:/a")
+; CHECK: !32 = distinct !DISubprogram(name: "f", scope: !11, file: !11, line: 1, type: !20, scopeLine: 1, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !22)
+; CHECK: !33 = distinct !DISubprogram(name: "f", scope: !14, file: !14, line: 1, type: !20, scopeLine: 1, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !22)
+; CHECK: !34 = distinct !DISubprogram(name: "f", scope: !35, file: !35, line: 1, type: !20, scopeLine: 1, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !22)
+; CHECK: !35 = !DIFile(filename: "./b/./../b\\x.c", directory: "a/d/p")
 
 ; All use the same flag
-define void @l1() !dbg !10 {
+define void @l1() !dbg !20 {
   ret void
 }
-define void @l2() !dbg !11 {
+define void @l2() !dbg !21 {
   ret void
 }
 
 ; All use the same flag
-define void @w1() !dbg !12 {
+define void @w1() !dbg !22 {
+  ret void
+}
+define void @w2() !dbg !23 {
+  ret void
+}
+define void @w3() !dbg !24 {
+  ret void
+}
+define void @w4() !dbg !25 {
   ret void
 }
-define void @w2() !dbg !13 {
+
+; Test relative paths
+define void @w5() !dbg !26 {
   ret void
 }
-define void @w3() !dbg !14 {
+define void @w6() !dbg !27 {
   ret void
 }
-define void @w4() !dbg !15 {
+define void @w7() !dbg !28 {
   ret void
 }
 
 !llvm.dbg.cu = !{!0}
-!llvm.module.flags = !{!7, !8}
-!llvm.ident = !{!9}
+!llvm.module.flags = !{!17, !18}
+!llvm.ident = !{!19}
 
 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, splitDebugInlining: false, nameTableKind: None)
 !1 = !DIFile(filename: "a/x.c", directory: "/tmp")
 !2 = !DIFile(filename: "x.c", directory: "/tmp/a")
 !3 = !DIFile(filename: "./x.c", directory: "C:\\\\a\\\\b\\\\")
 !4 = !DIFile(filename: "./b\\x.c", directory: "C:\\\\a\\\\")
 !5 = !DIFile(filename: "./b/x.c", directory: "C:\\\\a\\\\")
-!6 = !DIFile(filename: "./b/./../b/x.c", directory: "C:\\\\a")
-!7 = !{i32 2, !"CodeView", i32 1}
-!8 = !{i32 2, !"Debug Info Version", i32 3}
-!9 = !{!"clang"}
-!10 = distinct !DISubprogram(name: "f", scope: !1, file: !1, line: 1, type: !31, scopeLine: 1, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !33)
-!11 = distinct !DISubprogram(name: "f", scope: !2, file: !2, line: 1, type: !31, scopeLine: 1, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !33)
-!12 = distinct !DISubprogram(name: "f", scope: !3, file: !3, line: 1, type: !31, scopeLine: 1, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !33)
-!13 = distinct !DISubprogram(name: "f", scope: !4, file: !4, line: 1, type: !31, scopeLine: 1, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !33)
-!14 = distinct !DISubprogram(name: "f", scope: !5, file: !5, line: 1, type: !31, scopeLine: 1, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !33)
-!15 = distinct !DISubprogram(name: "f", scope: !6, file: !6, line: 1, type: !31, scopeLine: 1, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !33)
+!6 = !DIFile(filename: "./b/./../b/x.c", directory: "C:/a")
+!7 = !DIFile(filename: "./b/.\\../b/x.c", directory: "a\\d/p")
+!8 = !DIFile(filename: "./b/./../b/x.c", directory: "a/d/p")
+!9 = !DIFile(filename: "./b/./../b\\x.c", directory: "a/d/p")
+!17 = !{i32 2, !"CodeView", i32 1}
+!18 = !{i32 2, !"Debug Info Version", i32 3}
+!19 = !{!"clang"}
+!20 = distinct !DISubprogram(name: "f", scope: !1, file: !1, line: 1, type: !31, scopeLine: 1, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !33)
+!21 = distinct !DISubprogram(name: "f", scope: !2, file: !2, line: 1, type: !31, scopeLine: 1, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !33)
+!22 = distinct !DISubprogram(name: "f", scope: !3, file: !3, line: 1, type: !31, scopeLine: 1, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !33)
+!23 = distinct !DISubprogram(name: "f", scope: !4, file: !4, line: 1, type: !31, scopeLine: 1, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !33)
+!24 = distinct !DISubprogram(name: "f", scope: !5, file: !5, line: 1, type: !31, scopeLine: 1, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !33)
+!25 = distinct !DISubprogram(name: "f", scope: !6, file: !6, line: 1, type: !31, scopeLine: 1, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !33)
+!26 = distinct !DISubprogram(name: "f", scope: !7, file: !7, line: 1, type: !31, scopeLine: 1, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !33)
+!27 = distinct !DISubprogram(name: "f", scope: !8, file: !8, line: 1, type: !31, scopeLine: 1, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !33)
+!28 = distinct !DISubprogram(name: "f", scope: !9, file: !9, line: 1, type: !31, scopeLine: 1, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !33)
 !31 = !DISubroutineType(types: !32)
 !32 = !{null}
 !33 = !{}