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1; RUN: llc < %s -filetype=obj -o %t2; RUN: llvm-dwarfdump -v %t | FileCheck %s3 4; C++ source to regenerate:5; $ cat t.cpp6; struct A {7; void thiscallcc();8; };9; void A::thiscallcc() {}10; void cdeclcc() {}11; void __fastcall fastcallcc() {}12; void __stdcall stdcallcc() {}13; void __vectorcall vectorcallcc() {}14; $ clang -g t.cpp -emit-llvm -S -o t.ll -O115 16; CHECK: .debug_abbrev contents:17 18; CHECK: [[subroutine_abbrev:\[[0-9]+\]]] DW_TAG_subroutine_type DW_CHILDREN_yes19; CHECK-NEXT: DW_AT_type DW_FORM_ref420; CHECK-NEXT: DW_AT_calling_convention DW_FORM_data121 22; CHECK: .debug_info contents:23 24; CHECK: DW_TAG_subroutine_type [[subroutine_abbrev]] *25; CHECK-NEXT: DW_AT_type [DW_FORM_ref4] {{.*}}26; CHECK-NEXT: DW_AT_calling_convention [DW_FORM_data1] (DW_CC_BORLAND_msfastcall)27 28; CHECK: DW_TAG_subprogram [{{.*}}] *29; CHECK: DW_AT_low_pc30; CHECK: DW_AT_high_pc31; CHECK: DW_AT_frame_base32; CHECK: DW_AT_linkage_name33; CHECK: DW_AT_name34; CHECK: DW_AT_decl_file35; CHECK: DW_AT_decl_line36; CHECK: DW_AT_calling_convention [DW_FORM_data1] (DW_CC_BORLAND_msfastcall)37; CHECK: DW_AT_type38; CHECK: DW_AT_external39 40; ModuleID = 't.cpp'41source_filename = "t.cpp"42target datalayout = "e-m:x-p:32:32-i64:64-f80:32-n8:16:32-a:0:32-S32"43target triple = "i386-pc-windows-msvc19.0.23918"44 45@"\01?fptr@@3P6IHHH@ZA" = global ptr @"\01?f@@YIHHH@Z", align 4, !dbg !046 47; Function Attrs: nounwind readnone48define x86_fastcallcc i32 @"\01?f@@YIHHH@Z"(i32 inreg %a, i32 inreg %b) #0 !dbg !13 {49entry:50 tail call void @llvm.dbg.value(metadata i32 %b, metadata !15, metadata !17), !dbg !1851 tail call void @llvm.dbg.value(metadata i32 %a, metadata !16, metadata !17), !dbg !1952 %add = add nsw i32 %b, %a, !dbg !2053 ret i32 %add, !dbg !2154}55 56; Function Attrs: nounwind readnone57declare void @llvm.dbg.value(metadata, metadata, metadata) #158 59attributes #0 = { nounwind readnone "disable-tail-calls"="false" "less-precise-fpmad"="false" "frame-pointer"="none" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="pentium4" "target-features"="+fxsr,+mmx,+sse,+sse2,+x87" "use-soft-float"="false" }60attributes #1 = { nounwind readnone }61 62!llvm.dbg.cu = !{!2}63!llvm.module.flags = !{!10, !11}64!llvm.ident = !{!12}65 66!0 = distinct !DIGlobalVariableExpression(var: !1, expr: !DIExpression())67!1 = !DIGlobalVariable(name: "fptr", linkageName: "\01?fptr@@3P6IHHH@ZA", scope: !2, file: !3, line: 2, type: !6, isLocal: false, isDefinition: true)68!2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !3, producer: "clang version 3.9.0 (trunk 272067)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5)69!3 = !DIFile(filename: "t.cpp", directory: "D:\5Csrc\5Cllvm\5Cbuild")70!4 = !{}71!5 = !{!0}72!6 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !7, size: 32, align: 32)73!7 = !DISubroutineType(cc: DW_CC_BORLAND_msfastcall, types: !8)74!8 = !{!9, !9, !9}75!9 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)76!10 = !{i32 2, !"Dwarf Version", i32 4}77!11 = !{i32 2, !"Debug Info Version", i32 3}78!12 = !{!"clang version 3.9.0 (trunk 272067)"}79!13 = distinct !DISubprogram(name: "f", linkageName: "\01?f@@YIHHH@Z", scope: !3, file: !3, line: 1, type: !7, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: true, unit: !2, retainedNodes: !14)80!14 = !{!15, !16}81!15 = !DILocalVariable(name: "b", arg: 2, scope: !13, file: !3, line: 1, type: !9)82!16 = !DILocalVariable(name: "a", arg: 1, scope: !13, file: !3, line: 1, type: !9)83!17 = !DIExpression()84!18 = !DILocation(line: 1, column: 29, scope: !13)85!19 = !DILocation(line: 1, column: 22, scope: !13)86!20 = !DILocation(line: 1, column: 43, scope: !13)87!21 = !DILocation(line: 1, column: 34, scope: !13)88 89