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1; RUN: split-file %s %t2; RUN: llc < %t/1.ll -mtriple=x86_64 | FileCheck %s --check-prefix=DEBUG_FRAME3; RUN: llc < %t/1.ll -mtriple=x86_64 -force-dwarf-frame-section | FileCheck %s --check-prefix=DEBUG_FRAME4; RUN: llc < %t/2.ll -mtriple=x86_64 | FileCheck %s --check-prefix=EH_FRAME5; RUN: llc < %t/2.ll -mtriple=x86_64 -force-dwarf-frame-section | FileCheck %s --check-prefix=BOTH6; RUN: llc < %t/3.ll -mtriple=x86_64 | FileCheck %s --check-prefix=EH_FRAME7; RUN: llc < %t/3.ll -mtriple=x86_64 -force-dwarf-frame-section | FileCheck %s --check-prefix=BOTH8 9; EH_FRAME-NOT: .cfi_sections10; DEBUG_FRAME: .cfi_sections .debug_frame{{$}}11; BOTH: .cfi_sections .eh_frame, .debug_frame{{$}}12 13;--- 1.ll14;; No function has uwtable/personality or throws && f needs debug info -> emit .debug_frame15 16define void @f() nounwind !dbg !6 {17entry:18 ret void19}20 21define void @g() nounwind {22entry:23 ret void24}25 26!llvm.dbg.cu = !{!0}27!llvm.module.flags = !{!3, !4, !5}28 29!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 13.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: false, nameTableKind: None)30!1 = !DIFile(filename: "a.c", directory: "/tmp")31!2 = !{}32!3 = !{i32 7, !"Dwarf Version", i32 5}33!4 = !{i32 2, !"Debug Info Version", i32 3}34!5 = !{i32 1, !"wchar_size", i32 4}35!6 = distinct !DISubprogram(name: "f", scope: !1, file: !1, line: 1, type: !7, scopeLine: 1, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !2)36!7 = !DISubroutineType(types: !8)37!8 = !{null}38!9 = !DILocation(line: 1, column: 15, scope: !6)39 40;--- 2.ll41;; g has uwtable and thus needs .eh_frame42 43define void @f() nounwind !dbg !6 {44entry:45 ret void46}47 48define void @g() nounwind uwtable !dbg !10 {49entry:50 ret void51}52 53!llvm.dbg.cu = !{!0}54!llvm.module.flags = !{!3, !4, !5}55 56!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 13.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: false, nameTableKind: None)57!1 = !DIFile(filename: "a.c", directory: "/tmp")58!2 = !{}59!3 = !{i32 7, !"Dwarf Version", i32 5}60!4 = !{i32 2, !"Debug Info Version", i32 3}61!5 = !{i32 1, !"wchar_size", i32 4}62!6 = distinct !DISubprogram(name: "f", scope: !1, file: !1, line: 1, type: !7, scopeLine: 1, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !2)63!7 = !DISubroutineType(types: !8)64!8 = !{null}65!9 = !DILocation(line: 1, column: 15, scope: !6)66!10 = distinct !DISubprogram(name: "g", scope: !1, file: !1, line: 2, type: !7, scopeLine: 2, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !2)67!11 = !DILocation(line: 2, column: 15, scope: !10)68 69;--- 3.ll70;; g has no nounwind, so it is treated as throwable. Emit .eh_frame.71 72define void @f() nounwind !dbg !6 {73entry:74 ret void75}76 77define void @g() !dbg !10 {78entry:79 ret void80}81 82!llvm.dbg.cu = !{!0}83!llvm.module.flags = !{!3, !4, !5}84 85!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 13.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: false, nameTableKind: None)86!1 = !DIFile(filename: "a.c", directory: "/tmp")87!2 = !{}88!3 = !{i32 7, !"Dwarf Version", i32 5}89!4 = !{i32 2, !"Debug Info Version", i32 3}90!5 = !{i32 1, !"wchar_size", i32 4}91!6 = distinct !DISubprogram(name: "f", scope: !1, file: !1, line: 1, type: !7, scopeLine: 1, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !2)92!7 = !DISubroutineType(types: !8)93!8 = !{null}94!9 = !DILocation(line: 1, column: 15, scope: !6)95!10 = distinct !DISubprogram(name: "g", scope: !1, file: !1, line: 2, type: !7, scopeLine: 2, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !2)96!11 = !DILocation(line: 2, column: 15, scope: !10)97