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a9fbb2813b
This patch reverses the edge from DIGlobalVariable to GlobalVariable. This will allow us to more easily preserve debug info metadata when manipulating global variables. Fixes PR30362. A program for upgrading test cases is attached to that bug. Differential Revision: http://reviews.llvm.org/D20147 llvm-svn: 281284
87 lines
3.9 KiB
LLVM
87 lines
3.9 KiB
LLVM
; RUN: llc < %s -filetype=obj -o %t
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; RUN: llvm-dwarfdump %t | FileCheck %s
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; C++ source to regenerate:
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; $ cat t.cpp
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; struct A {
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; void thiscallcc();
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; };
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; void A::thiscallcc() {}
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; void cdeclcc() {}
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; void __fastcall fastcallcc() {}
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; void __stdcall stdcallcc() {}
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; void __vectorcall vectorcallcc() {}
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; $ clang -g t.cpp -emit-llvm -S -o t.ll -O1
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; CHECK: .debug_abbrev contents:
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; CHECK: [[subroutine_abbrev:\[[0-9]+\]]] DW_TAG_subroutine_type DW_CHILDREN_yes
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; CHECK-NEXT: DW_AT_type DW_FORM_ref4
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; CHECK-NEXT: DW_AT_calling_convention DW_FORM_data1
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; CHECK: .debug_info contents:
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; CHECK: DW_TAG_subroutine_type [[subroutine_abbrev]] *
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; CHECK-NEXT: DW_AT_type [DW_FORM_ref4] {{.*}}
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; CHECK-NEXT: DW_AT_calling_convention [DW_FORM_data1] (DW_CC_BORLAND_msfastcall)
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; CHECK: DW_TAG_subprogram [{{.*}}] *
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; CHECK: DW_AT_low_pc
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; CHECK: DW_AT_high_pc
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; CHECK: DW_AT_frame_base
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; CHECK: DW_AT_linkage_name
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; CHECK: DW_AT_name
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; CHECK: DW_AT_decl_file
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; CHECK: DW_AT_decl_line
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; CHECK: DW_AT_calling_convention [DW_FORM_data1] (DW_CC_BORLAND_msfastcall)
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; CHECK: DW_AT_type
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; CHECK: DW_AT_external
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; ModuleID = 't.cpp'
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source_filename = "t.cpp"
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target datalayout = "e-m:x-p:32:32-i64:64-f80:32-n8:16:32-a:0:32-S32"
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target triple = "i386-pc-windows-msvc19.0.23918"
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@"\01?fptr@@3P6IHHH@ZA" = global i32 (i32, i32)* @"\01?f@@YIHHH@Z", align 4, !dbg !4
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; Function Attrs: nounwind readnone
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define x86_fastcallcc i32 @"\01?f@@YIHHH@Z"(i32 inreg %a, i32 inreg %b) #0 !dbg !12 {
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entry:
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tail call void @llvm.dbg.value(metadata i32 %b, i64 0, metadata !14, metadata !16), !dbg !17
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tail call void @llvm.dbg.value(metadata i32 %a, i64 0, metadata !15, metadata !16), !dbg !18
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%add = add nsw i32 %b, %a, !dbg !19
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ret i32 %add, !dbg !20
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}
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; Function Attrs: nounwind readnone
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declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #1
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attributes #0 = { nounwind readnone "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "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" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #1 = { nounwind readnone }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!9, !10}
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!llvm.ident = !{!11}
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!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 3.9.0 (trunk 272067)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, globals: !3)
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!1 = !DIFile(filename: "t.cpp", directory: "D:\5Csrc\5Cllvm\5Cbuild")
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!2 = !{}
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!3 = !{!4}
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!4 = distinct !DIGlobalVariable(name: "fptr", linkageName: "\01?fptr@@3P6IHHH@ZA", scope: !0, file: !1, line: 2, type: !5, isLocal: false, isDefinition: true)
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!5 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !6, size: 32, align: 32)
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!6 = !DISubroutineType(cc: DW_CC_BORLAND_msfastcall, types: !7)
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!7 = !{!8, !8, !8}
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!8 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!9 = !{i32 2, !"Dwarf Version", i32 4}
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!10 = !{i32 2, !"Debug Info Version", i32 3}
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!11 = !{!"clang version 3.9.0 (trunk 272067)"}
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!12 = distinct !DISubprogram(name: "f", linkageName: "\01?f@@YIHHH@Z", scope: !1, file: !1, line: 1, type: !6, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: true, unit: !0, variables: !13)
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!13 = !{!14, !15}
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!14 = !DILocalVariable(name: "b", arg: 2, scope: !12, file: !1, line: 1, type: !8)
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!15 = !DILocalVariable(name: "a", arg: 1, scope: !12, file: !1, line: 1, type: !8)
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!16 = !DIExpression()
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!17 = !DILocation(line: 1, column: 29, scope: !12)
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!18 = !DILocation(line: 1, column: 22, scope: !12)
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!19 = !DILocation(line: 1, column: 43, scope: !12)
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!20 = !DILocation(line: 1, column: 34, scope: !12)
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