derek.holloway
7502bf64a4
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64 lines
2.9 KiB
LLVM
64 lines
2.9 KiB
LLVM
; RUN: %llc_dwarf -O0 -filetype=obj < %s | llvm-dwarfdump -debug-info --name=static_local --show-parents - | FileCheck %s --implicit-check-not=DW_TAG
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;; Derived from a CUDA program like:
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;;
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;; __forceinline__ __device__ void foo(int *p) {
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;; { // lexical block -- scope of the static local
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;; static __shared__ int static_local;
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;; *p = static_local;
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;; }
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;; }
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;;
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;; __global__ void bar(int *q) {
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;; {
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;; foo(q); // foo is inlined here
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;; }
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;; }
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;;
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;; __forceinline__ causes foo to be inlined, so an abstract subprogram
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;; origin is created for it. The `static __shared__` variable compiles to an
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;; addrspace(3) global (not a local variable) whose DI scope is the
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;; DILexicalBlock inside foo. When the abstract scope tree is built,
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;; skipLexicalScope() may elide that lexical block because it has no local
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;; variables -- but the global still needs the block as its context DIE.
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;; The abstract "foo" subprogram must contain a DW_TAG_lexical_block holding
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;; the "static_local" variable.
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; CHECK: DW_TAG_compile_unit
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; CHECK: DW_TAG_subprogram
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; CHECK: DW_AT_name ("foo")
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; CHECK: DW_AT_inline (DW_INL_inlined)
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; CHECK: DW_TAG_lexical_block
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; CHECK: DW_TAG_variable
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; CHECK: DW_AT_name ("static_local")
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@static_local = internal addrspace(3) global i32 0, align 4, !dbg !0
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define void @_Z3barPi(ptr %q) !dbg !14 {
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entry:
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ret void, !dbg !17
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}
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!llvm.dbg.cu = !{!10}
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!llvm.module.flags = !{!13}
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!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
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!1 = distinct !DIGlobalVariable(name: "static_local", linkageName: "_ZZ3fooPiE12static_local", scope: !2, file: !3, line: 3, type: !9, isLocal: true, isDefinition: true)
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!2 = distinct !DILexicalBlock(scope: !4, file: !3, line: 2, column: 1)
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!3 = !DIFile(filename: "test.cu", directory: "/")
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!4 = distinct !DISubprogram(name: "foo", linkageName: "_Z3fooPi", scope: !3, file: !3, line: 1, type: !5, scopeLine: 1, spFlags: DISPFlagLocalToUnit | DISPFlagDefinition, unit: !10, retainedNodes: !12)
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!5 = !DISubroutineType(types: !6)
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!6 = !{!7, !8}
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!7 = !DIBasicType(tag: DW_TAG_unspecified_type, name: "void")
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!8 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !9, size: 64, align: 64, addressSpace: 12)
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!9 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!10 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !3, producer: "lgenfe: EDG 6.8", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, globals: !11)
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!11 = !{!0}
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!12 = !{}
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!13 = !{i32 1, !"Debug Info Version", i32 3}
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!14 = distinct !DISubprogram(name: "bar", linkageName: "_Z3barPi", scope: !3, file: !3, line: 9, type: !5, scopeLine: 9, spFlags: DISPFlagDefinition, unit: !10, retainedNodes: !12)
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!15 = distinct !DILocation(line: 11, column: 3, scope: !16)
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!16 = distinct !DILexicalBlock(scope: !14, file: !3, line: 10, column: 1)
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!17 = !DILocation(line: 4, column: 3, scope: !2, inlinedAt: !15)
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