121 lines
5.6 KiB
LLVM
121 lines
5.6 KiB
LLVM
; REQUIRES: object-emission
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;
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; RUN: llc -mtriple=x86_64-unknown-linux-gnu -O0 -filetype=obj < %s > %t
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; RUN: llvm-dwarfdump %t | FileCheck %s
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; Test case derived from compiling the following source with clang -g:
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;
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; namespace pr14763 {
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; struct foo {
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; foo(const foo&);
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; };
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;
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; foo func(foo f) {
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; return f; // reference 'f' for now because otherwise we hit another bug
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; }
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;
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; void sink(void*);
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;
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; void func2(bool b, foo g) {
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; if (b)
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; sink(&g); // reference 'f' for now because otherwise we hit another bug
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; }
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; }
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; CHECK: debug_info contents
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; 0x74 is DW_OP_breg4, showing that the parameter is accessed indirectly
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; (with a zero offset) from the register parameter
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; CHECK: DW_AT_location [DW_FORM_data4] ([[F_LOC:0x[0-9]*]])
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; CHECK-NOT: DW_TAG
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; CHECK: DW_AT_name{{.*}} = "f"
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;
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; CHECK: DW_AT_location{{.*}}([[G_LOC:0x[0-9]*]])
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; CHECK-NOT: DW_TAG
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; CHECK: DW_AT_name{{.*}} = "g"
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;
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; CHECK: debug_loc contents
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; CHECK: [[F_LOC]]: Beginning
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; CHECK-NEXT: Ending
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; CHECK-NEXT: Location description: 74 00
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; CHECK: [[G_LOC]]: Beginning
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; CHECK-NEXT: Ending
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; CHECK-NEXT: Location description: 74 00
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%"struct.pr14763::foo" = type { i8 }
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; Function Attrs: uwtable
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define void @_ZN7pr147634funcENS_3fooE(%"struct.pr14763::foo"* noalias sret %agg.result, %"struct.pr14763::foo"* %f) #0 !dbg !4 {
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entry:
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call void @llvm.dbg.declare(metadata %"struct.pr14763::foo"* %f, metadata !22, metadata !DIExpression(DW_OP_deref)), !dbg !24
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call void @_ZN7pr147633fooC1ERKS0_(%"struct.pr14763::foo"* %agg.result, %"struct.pr14763::foo"* %f), !dbg !25
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ret void, !dbg !25
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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 @_ZN7pr147633fooC1ERKS0_(%"struct.pr14763::foo"*, %"struct.pr14763::foo"*) #2
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; Function Attrs: uwtable
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define void @_ZN7pr147635func2EbNS_3fooE(i1 zeroext %b, %"struct.pr14763::foo"* %g) #0 !dbg !17 {
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entry:
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%b.addr = alloca i8, align 1
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%frombool = zext i1 %b to i8
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store i8 %frombool, i8* %b.addr, align 1
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call void @llvm.dbg.declare(metadata i8* %b.addr, metadata !26, metadata !DIExpression()), !dbg !27
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call void @llvm.dbg.declare(metadata %"struct.pr14763::foo"* %g, metadata !28, metadata !DIExpression(DW_OP_deref)), !dbg !27
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%0 = load i8, i8* %b.addr, align 1, !dbg !29
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%tobool = trunc i8 %0 to i1, !dbg !29
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br i1 %tobool, label %if.then, label %if.end, !dbg !29
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if.then: ; preds = %entry
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%1 = bitcast %"struct.pr14763::foo"* %g to i8*, !dbg !31
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call void @_ZN7pr147634sinkEPv(i8* %1), !dbg !31
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br label %if.end, !dbg !31
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if.end: ; preds = %if.then, %entry
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ret void, !dbg !32
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}
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declare void @_ZN7pr147634sinkEPv(i8*) #2
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attributes #0 = { uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf"="true" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #1 = { nounwind readnone }
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attributes #2 = { "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf"="true" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "unsafe-fp-math"="false" "use-soft-float"="false" }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!21, !33}
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!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.4 ", isOptimized: false, emissionKind: FullDebug, file: !1, enums: !2, retainedTypes: !2, globals: !2, imports: !2)
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!1 = !DIFile(filename: "pass.cpp", directory: "/tmp")
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!2 = !{}
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!4 = distinct !DISubprogram(name: "func", linkageName: "_ZN7pr147634funcENS_3fooE", line: 6, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 6, file: !1, scope: !5, type: !6, variables: !2)
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!5 = !DINamespace(name: "pr14763", line: 1, file: !1, scope: null)
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!6 = !DISubroutineType(types: !7)
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!7 = !{!8, !8}
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!8 = !DICompositeType(tag: DW_TAG_structure_type, name: "foo", line: 2, size: 8, align: 8, file: !1, scope: !5, elements: !9)
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!9 = !{!10}
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!10 = !DISubprogram(name: "foo", line: 3, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 3, file: !1, scope: !8, type: !11)
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!11 = !DISubroutineType(types: !12)
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!12 = !{null, !13, !14}
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!13 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial | DIFlagObjectPointer, baseType: !8)
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!14 = !DIDerivedType(tag: DW_TAG_reference_type, baseType: !15)
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!15 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !8)
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!17 = distinct !DISubprogram(name: "func2", linkageName: "_ZN7pr147635func2EbNS_3fooE", line: 12, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 12, file: !1, scope: !5, type: !18, variables: !2)
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!18 = !DISubroutineType(types: !19)
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!19 = !{null, !20, !8}
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!20 = !DIBasicType(tag: DW_TAG_base_type, name: "bool", size: 8, align: 8, encoding: DW_ATE_boolean)
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!21 = !{i32 2, !"Dwarf Version", i32 3}
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!22 = !DILocalVariable(name: "f", line: 6, arg: 1, scope: !4, file: !23, type: !8)
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!23 = !DIFile(filename: "pass.cpp", directory: "/tmp")
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!24 = !DILocation(line: 6, scope: !4)
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!25 = !DILocation(line: 7, scope: !4)
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!26 = !DILocalVariable(name: "b", line: 12, arg: 1, scope: !17, file: !23, type: !20)
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!27 = !DILocation(line: 12, scope: !17)
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!28 = !DILocalVariable(name: "g", line: 12, arg: 2, scope: !17, file: !23, type: !8)
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!29 = !DILocation(line: 13, scope: !30)
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!30 = distinct !DILexicalBlock(line: 13, column: 0, file: !1, scope: !17)
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!31 = !DILocation(line: 14, scope: !30)
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!32 = !DILocation(line: 15, scope: !17)
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!33 = !{i32 1, !"Debug Info Version", i32 3}
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