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69e607f200
This change simplifies code that has to deal with DIGlobalVariableExpression and mirrors how we treat DIExpressions in debug info intrinsics. Before this change there were two ways of representing empty expressions on globals, a nullptr and an empty !DIExpression(). If someone needs to upgrade out-of-tree testcases: perl -pi -e 's/(!DIGlobalVariableExpression\(var: ![0-9]*)\)/\1, expr: !DIExpression())/g' <MYTEST.ll> will catch 95%. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@312144 91177308-0d34-0410-b5e6-96231b3b80d8
110 lines
4.4 KiB
LLVM
110 lines
4.4 KiB
LLVM
; RUN: llc -dwarf-version=4 -generate-type-units \
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; RUN: -filetype=obj -O0 -mtriple=x86_64-unknown-linux-gnu < %s \
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; RUN: | llvm-dwarfdump - | FileCheck %s --check-prefix=SINGLE-4
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; RUN: llc -split-dwarf-file=foo.dwo -dwarf-version=4 -generate-type-units \
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; RUN: -filetype=obj -O0 -mtriple=x86_64-unknown-linux-gnu < %s \
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; RUN: | llvm-dwarfdump - | FileCheck %s --check-prefix=SPLIT-4
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; RUN: llc -dwarf-version=5 -generate-type-units \
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; RUN: -filetype=obj -O0 -mtriple=x86_64-unknown-linux-gnu < %s \
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; RUN: | llvm-dwarfdump - | FileCheck %s --check-prefix=SINGLE-5
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; RUN: llc -split-dwarf-file=foo.dwo -dwarf-version=5 -generate-type-units \
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; RUN: -filetype=obj -O0 -mtriple=x86_64-unknown-linux-gnu < %s \
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; RUN: | llvm-dwarfdump - | FileCheck %s --check-prefix=SPLIT-5
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; Looking for DWARF headers to be generated correctly.
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; There are 7 variants: v4 CU, v4 TU, v5 (normal/skeleton/split) CU,
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; v5 (normal/split) TU. The v5 CU variants and TU variants differ
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; only in the type-unit code.
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; (v2 thru v4 CUs are all the same, and TUs were invented in v4,
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; so we don't bother checking older versions.)
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; Test case built from:
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;struct S {
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; int s1;
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;};
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;
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;S s;
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; Verify the v4 non-split headers.
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; Note that we check the exact offset of the DIEs because that tells us
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; the length of the header.
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;
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; SINGLE-4: .debug_info contents:
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; SINGLE-4: 0x00000000: Compile Unit: {{.*}} version = 0x0004 abbr_offset
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; SINGLE-4: 0x0000000b: DW_TAG_compile_unit
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;
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; SINGLE-4: .debug_types contents:
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; SINGLE-4: 0x00000000: Type Unit: {{.*}} version = 0x0004 abbr_offset
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; SINGLE-4: 0x00000017: DW_TAG_type_unit
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; Verify the v4 split headers.
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;
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; SPLIT-4: .debug_info contents:
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; SPLIT-4: 0x00000000: Compile Unit: {{.*}} version = 0x0004 abbr_offset
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; SPLIT-4: 0x0000000b: DW_TAG_compile_unit
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;
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; SPLIT-4: .debug_info.dwo contents:
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; SPLIT-4: 0x00000000: Compile Unit: {{.*}} version = 0x0004 abbr_offset
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; SPLIT-4: 0x0000000b: DW_TAG_compile_unit
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;
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; SPLIT-4: .debug_types.dwo contents:
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; SPLIT-4: 0x00000000: Type Unit: {{.*}} version = 0x0004 abbr_offset
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; SPLIT-4: 0x00000017: DW_TAG_type_unit
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; Verify the v5 non-split headers.
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;
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; SINGLE-5: .debug_info contents:
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; SINGLE-5: 0x00000000: Compile Unit: {{.*}} version = 0x0005 unit_type = DW_UT_compile abbr_offset
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; SINGLE-5: 0x0000000c: DW_TAG_compile_unit
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;
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; FIXME: V5 wants type units in .debug_info not .debug_types.
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; SINGLE-5: .debug_types contents:
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; SINGLE-5: 0x00000000: Type Unit: {{.*}} version = 0x0005 unit_type = DW_UT_type abbr_offset
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; SINGLE-5: 0x00000018: DW_TAG_type_unit
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; Verify the v5 split headers.
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;
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; SPLIT-5: .debug_info contents:
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; SPLIT-5: 0x00000000: Compile Unit: {{.*}} version = 0x0005 unit_type = DW_UT_skeleton abbr_offset
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; SPLIT-5: 0x0000000c: DW_TAG_compile_unit
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;
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; SPLIT-5: .debug_info.dwo contents:
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; SPLIT-5: 0x00000000: Compile Unit: {{.*}} version = 0x0005 unit_type = DW_UT_split_compile abbr_offset
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; SPLIT-5: 0x0000000c: DW_TAG_compile_unit
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;
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; FIXME: V5 wants type units in .debug_info.dwo not .debug_types.dwo.
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; SPLIT-5: .debug_types.dwo contents:
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; SPLIT-5: 0x00000000: Type Unit: {{.*}} version = 0x0005 unit_type = DW_UT_split_type abbr_offset
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; SPLIT-5: 0x00000018: DW_TAG_type_unit
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; ModuleID = 't.cpp'
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source_filename = "t.cpp"
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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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%struct.S = type { i32 }
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@s = global %struct.S zeroinitializer, align 4, !dbg !0
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!llvm.dbg.cu = !{!2}
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!llvm.module.flags = !{!10, !11}
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!llvm.ident = !{!12}
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!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
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!1 = distinct !DIGlobalVariable(name: "s", scope: !2, file: !3, line: 5, type: !6, isLocal: false, isDefinition: true)
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!2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !3, producer: "clang version 5.0.0 (trunk 295942)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5)
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!3 = !DIFile(filename: "t.cpp", directory: "/home/probinson/projects/scratch")
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!4 = !{}
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!5 = !{!0}
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!6 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "S", file: !3, line: 1, size: 32, elements: !7, identifier: "_ZTS1S")
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!7 = !{!8}
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!8 = !DIDerivedType(tag: DW_TAG_member, name: "s1", scope: !6, file: !3, line: 2, baseType: !9, size: 32)
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!9 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!10 = !{i32 2, !"Dwarf Version", i32 4}
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!11 = !{i32 2, !"Debug Info Version", i32 3}
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!12 = !{!"clang version 5.0.0 (trunk 295942)"}
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