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24b9266a7e
Allow sections to be placed into COMDAT groups, in addtion to functions and data segments. Also make section symbols unnamed, which allows sections with identical names (section names are independent of their section symbols, but previously we gave the symbols the same name as their sections, which results in collisions when sections are identically-named). Differential Revision: https://reviews.llvm.org/D92691
116 lines
4.7 KiB
LLVM
116 lines
4.7 KiB
LLVM
; RUN: llc -dwarf-version=4 -generate-type-units \
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; RUN: -filetype=obj -O0 -mtriple=wasm32-unknown-unknown < %s \
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; RUN: | llvm-dwarfdump -v - | FileCheck %s --check-prefix=SINGLE-4
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; RUN: llc -split-dwarf-file=foo.dwo -split-dwarf-output=%t.dwo \
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; RUN: -dwarf-version=4 -generate-type-units \
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; RUN: -filetype=obj -O0 -mtriple=wasm32-unknown-unknown < %s \
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; RUN: | llvm-dwarfdump -v - | FileCheck %s --check-prefix=O-4
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; RUN: llvm-dwarfdump -v %t.dwo | FileCheck %s --check-prefix=DWO-4
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; RUN: llc -dwarf-version=5 -generate-type-units \
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; RUN: -filetype=obj -O0 -mtriple= < %s \
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; RUN: | llvm-dwarfdump -v - | FileCheck %s --check-prefix=SINGLE-5
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; RUN: llc -split-dwarf-file=foo.dwo -split-dwarf-output=%t.dwo \
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; RUN: -dwarf-version=5 -generate-type-units \
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; RUN: -filetype=obj -O0 -mtriple= < %s \
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; RUN: | llvm-dwarfdump -v - | FileCheck %s --check-prefix=O-5
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; RUN: llvm-dwarfdump -v %t.dwo | FileCheck %s --check-prefix=DWO-5
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; This test is derived from test/CodeGen/X86/dwarf-headers.ll
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; Looking for DWARF headers to be generated correctly.
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; There are 8 variants with 5 formats: v4 CU, v4 TU, v5 normal/partial CU,
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; v5 skeleton/split CU, v5 normal/split TU. Some v5 variants differ only
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; in the unit_type code, and the skeleton/split CU differs from normal/partial
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; by having one extra field (dwo_id).
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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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; O-4: .debug_info contents:
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; O-4: 0x00000000: Compile Unit: {{.*}} version = 0x0004, abbr_offset
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; O-4: 0x0000000b: DW_TAG_compile_unit
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;
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; DWO-4: .debug_info.dwo contents:
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; DWO-4: 0x00000000: Compile Unit: {{.*}} version = 0x0004, abbr_offset
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; DWO-4: 0x0000000b: DW_TAG_compile_unit
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;
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; DWO-4: .debug_types.dwo contents:
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; DWO-4: 0x00000000: Type Unit: {{.*}} version = 0x0004, abbr_offset
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; DWO-4: 0x00000017: DW_TAG_type_unit
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; Verify the v5 non-split headers. Type units come first.
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; All .debug_info sections are reported in one go, but the offset resets for
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; each new section.
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;
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; SINGLE-5: .debug_info 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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; SINGLE-5-NOT: 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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; Verify the v5 split headers.
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;
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; O-5: .debug_info contents:
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; O-5: 0x00000000: Compile Unit: {{.*}} version = 0x0005, unit_type = DW_UT_skeleton, abbr_offset
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; O-5-SAME: DWO_id = 0xccd7e58ef8bf4aa6
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; O-5: 0x00000014: DW_TAG_skeleton_unit
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;
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; DWO-5: .debug_info.dwo contents:
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; DWO-5: 0x00000000: Type Unit: {{.*}} version = 0x0005, unit_type = DW_UT_split_type, abbr_offset
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; DWO-5: 0x00000018: DW_TAG_type_unit
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; DWO-5: 0x00000033: Compile Unit: {{.*}} version = 0x0005, unit_type = DW_UT_split_compile, abbr_offset
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; DWO-5-SAME: DWO_id = 0xccd7e58ef8bf4aa6
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; DWO-5: 0x00000047: DW_TAG_compile_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-p:32:32-i64:64-n32:64-S128"
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target triple = "wasm32-unknown-unknown-wasm"
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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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