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106 lines
4.3 KiB
106 lines
4.3 KiB
4 months ago
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; RUN: llc < %s -filetype=obj | llvm-dwarfdump -v - --debug-info | FileCheck %s
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;
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; IR module created as follows:
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; clang -emit-llvm -S db-abs-1.cpp -o db-abs-1.ll -g
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; clang -emit-llvm -S db-abs-2.cpp -o db-abs-2.ll -gmlt
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; llvm-link db-abs-1.ll db-abs-2.ll -S -o db-abs-3.ll
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; --- db-abs-1.cpp ---
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; void f1();
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; inline __attribute__((always_inline)) void f2(int) {
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; f1();
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; }
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; void f3() {
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; f2(0);
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; }
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; --- db-abs-2.cpp ---
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; void f() {
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; }
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; ---
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; The point is that f3() is compiled -g and we get an abstract variable for the
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; unnamed parameter to f2(); then f() is compiled -gmlt and it's okay to have
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; the abstract variable still there.
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; PR31437.
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;
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; (The 'always_inline' attribute forces f2() to be inlined even at -O0, the
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; 'inline' keyword means the non-inlined definition of f2() can be omitted from
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; the IR. These are just tactics to simplify the generated test case.)
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;
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; Verify we see the formal parameter in the first compile-unit, and nothing in
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; the second compile-unit.
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;
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; CHECK: DW_TAG_compile_unit
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; CHECK-NOT: DW_TAG
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; CHECK: DW_AT_name {{.*}} "db-abs-1.cpp"
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; CHECK-NOT: NULL
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; CHECK: DW_TAG_subprogram
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; CHECK-NEXT: DW_AT_linkage_name {{.*}} "_Z2f2i"
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; CHECK-NOT: {{DW_TAG|NULL}}
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; CHECK: DW_TAG_formal_parameter
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; CHECK-NOT: DW_AT_name
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; CHECK: {{DW_TAG|NULL}}
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; CHECK: DW_TAG_inlined_subroutine
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; CHECK-NEXT: DW_AT_abstract_origin {{.*}} "_Z2f2i"
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; CHECK: DW_TAG_compile_unit
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; CHECK-NOT: DW_TAG
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; ModuleID = 'llvm-link'
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source_filename = "llvm-link"
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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; Function Attrs: noinline uwtable
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define void @_Z2f3v() #0 !dbg !8 {
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entry:
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%.addr.i = alloca i32, align 4
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call void @llvm.dbg.declare(metadata i32* %.addr.i, metadata !11, metadata !16), !dbg !17
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store i32 0, i32* %.addr.i, align 4
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call void @_Z2f1v(), !dbg !19
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ret void, !dbg !20
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}
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; Function Attrs: nounwind readnone
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declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
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declare void @_Z2f1v() #2
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; Function Attrs: noinline nounwind uwtable
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define void @_Z1fv() #3 !dbg !21 {
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entry:
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ret void, !dbg !23
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}
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attributes #0 = { noinline uwtable }
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attributes #1 = { nounwind readnone }
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attributes #2 = { nounwind }
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attributes #3 = { noinline nounwind uwtable }
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!llvm.dbg.cu = !{!0, !3}
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!llvm.ident = !{!5, !5}
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!llvm.module.flags = !{!6, !7}
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!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 5.0.0 (trunk 293745)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
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!1 = !DIFile(filename: "db-abs-1.cpp", directory: "/home/probinson/projects/scratch/pr31437")
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!2 = !{}
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!3 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !4, producer: "clang version 5.0.0 (trunk 293745)", isOptimized: false, runtimeVersion: 0, emissionKind: LineTablesOnly, enums: !2)
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!4 = !DIFile(filename: "db-abs-2.cpp", directory: "/home/probinson/projects/scratch/pr31437")
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!5 = !{!"clang version 5.0.0 (trunk 293745)"}
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!6 = !{i32 2, !"Dwarf Version", i32 4}
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!7 = !{i32 2, !"Debug Info Version", i32 3}
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!8 = distinct !DISubprogram(name: "f3", linkageName: "_Z2f3v", scope: !1, file: !1, line: 5, type: !9, isLocal: false, isDefinition: true, scopeLine: 5, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2)
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!9 = !DISubroutineType(types: !10)
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!10 = !{null}
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!11 = !DILocalVariable(arg: 1, scope: !12, file: !1, line: 2, type: !15)
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!12 = distinct !DISubprogram(name: "f2", linkageName: "_Z2f2i", scope: !1, file: !1, line: 2, type: !13, isLocal: false, isDefinition: true, scopeLine: 2, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2)
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!13 = !DISubroutineType(types: !14)
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!14 = !{null, !15}
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!15 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!16 = !DIExpression()
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!17 = !DILocation(line: 2, column: 50, scope: !12, inlinedAt: !18)
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!18 = distinct !DILocation(line: 6, column: 3, scope: !8)
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!19 = !DILocation(line: 3, column: 3, scope: !12, inlinedAt: !18)
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!20 = !DILocation(line: 7, column: 1, scope: !8)
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!21 = distinct !DISubprogram(name: "f", scope: !4, file: !4, line: 1, type: !22, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: false, unit: !3, retainedNodes: !2)
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!22 = !DISubroutineType(types: !2)
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!23 = !DILocation(line: 2, column: 1, scope: !21)
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