llvm/test/DebugInfo/COFF/global-constants.ll

   1 ; RUN: llc < %s | FileCheck %s --check-prefix=ASM
   2 ; RUN: llc < %s -filetype=obj | llvm-readobj - --codeview | FileCheck %s --check-prefix=OBJ
   3
   4 ; // C++ source to regenerate:
   5 ; namespace Test1 {
   6 ; const float TestConst1 = 3.14;
   7 ; }
   8 ; struct S {
   9 ;   static const int TestConst2 = -10;
  10 ;   // Unused static consts should still be emitted.
  11 ;   static const int TestConst3 = 3;
  12 ;   static constexpr int TestConst 4 = 4;
  13 ;   enum { SEnum = 42 };
  14 ; };
  15 ; enum TestEnum : int {
  16 ;   ENUM_A = 2147000000,
  17 ;   ENUM_B = -2147000000,
  18 ; };
  19 ; void useConst(int);
  20 ; void foo() {
  21 ;   useConst(Test1::TestConst1);
  22 ;   useConst(S::TestConst2);
  23 ;   useConst(ENUM_B);
  24 ;   useConst(S::SEnum);
  25 ; }
  26 ;
  27 ; $ clang a.cpp -S -emit-llvm -g -gcodeview
  28
  29 ; ASM-LABEL:  .long 241                     # Symbol subsection for globals
  30
  31 ; ASM:        .short    4359                    # Record kind: S_CONSTANT
  32 ; ASM-NEXT:       .long 4099                    # Type
  33 ; ASM-NEXT:       .byte 0x04, 0x80, 0xc3, 0xf5  # Value
  34 ; ASM-NEXT:       .byte 0x48, 0x40
  35 ; ASM-NEXT:       .asciz        "Test1::TestConst1"     # Name
  36 ; ASM-NEXT:       .p2align      2
  37
  38 ; ASM:        .short    4359                    # Record kind: S_CONSTANT
  39 ; ASM-NEXT:       .long 4101                    # Type
  40 ; ASM-NEXT:       .byte 0x03, 0x80, 0x40, 0x61  # Value
  41 ; ASM-NEXT:       .byte 0x07, 0x80
  42 ; ASM-NEXT:       .asciz        "ENUM_B"                # Name
  43 ; ASM-NEXT:       .p2align      2
  44 ; ASM-NOT:    .asciz "S::SEnum"             # Name
  45
  46 ; ASM:        .short    4359                    # Record kind: S_CONSTANT
  47 ; ASM-NEXT:       .long 4105                    # Type
  48 ; ASM-NEXT:       .byte 0x00, 0x80, 0xf6        # Value
  49 ; ASM-NEXT:       .asciz        "S::TestConst2"         # Name
  50 ; ASM-NEXT:       .p2align      2
  51
  52 ; OBJ:        CodeViewDebugInfo [
  53 ; OBJ:          Section: .debug$S
  54 ; OBJ:          Magic: 0x4
  55 ; OBJ:          Subsection [
  56 ; OBJ:            SubSectionType: Symbols (0xF1)
  57 ; OBJ:            ConstantSym {
  58 ; OBJ-NEXT:         Kind: S_CONSTANT (0x1107)
  59 ; OBJ-NEXT:         Type: const float (0x1003)
  60 ; OBJ-NEXT:         Value: 1078523331
  61 ; OBJ-NEXT:         Name: Test1::TestConst1
  62 ; OBJ-NEXT:       }
  63 ; OBJ-NEXT:       ConstantSym {
  64 ; OBJ-NEXT:         Kind: S_CONSTANT (0x1107)
  65 ; OBJ-NEXT:         Type: TestEnum (0x1005)
  66 ; OBJ-NEXT:         Value: -214700000
  67 ; OBJ-NEXT:         Name: ENUM_B
  68 ; OBJ-NEXT:       }
  69 ; OBJ-NOT:          Name: S::SEnum
  70 ; OBJ-NEXT:       ConstantSym {
  71 ; OBJ-NEXT:         Kind: S_CONSTANT (0x1107)
  72 ; OBJ-NEXT:         Type: const int (0x1009)
  73 ; OBJ-NEXT:         Value: -10
  74 ; OBJ-NEXT:         Name: S::TestConst2
  75 ; OBJ-NEXT:       }
  76
  77 ; ModuleID = 'a.cpp'
  78 source_filename = "a.cpp"
  79 target datalayout = "e-m:w-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
  80 target triple = "x86_64-pc-windows-msvc19.25.28614"
  81
  82 ; Function Attrs: noinline optnone uwtable
  83 define dso_local void @"?foo@@YAXXZ"() #0 !dbg !31 {
  84 entry:
  85   call void @"?useConst@@YAXH@Z"(i32 3), !dbg !35
  86   call void @"?useConst@@YAXH@Z"(i32 -10), !dbg !36
  87   call void @"?useConst@@YAXH@Z"(i32 -2147000000), !dbg !37
  88   call void @"?useConst@@YAXH@Z"(i32 42), !dbg !38
  89   ret void, !dbg !39
  90 }
  91
  92 declare dso_local void @"?useConst@@YAXH@Z"(i32) #1
  93
  94 attributes #0 = { noinline optnone uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "frame-pointer"="none" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
  95 attributes #1 = { "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "frame-pointer"="none" "less-precise-fpmad"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
  96
  97 !llvm.dbg.cu = !{!0}
  98 !llvm.module.flags = !{!26, !27, !28, !29}
  99 !llvm.ident = !{!30}
 100
 101 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !1, producer: "clang version 12.0.0 (https://github.com/llvm/llvm-project.git 34cd06a9b3bddaa7a989c606bbf1327ee651711c)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !17, globals: !18, nameTableKind: None)
 102 !1 = !DIFile(filename: "a.cpp", directory: "F:\\llvm-project\\__test", checksumkind: CSK_MD5, checksum: "a1dbf3aabea9e8f9d1be48f60287942f")
 103 !2 = !{!3, !13}
 104 !3 = !DICompositeType(tag: DW_TAG_enumeration_type, scope: !4, file: !1, line: 8, baseType: !8, size: 32, elements: !11, identifier: ".?AW4<unnamed-enum-SEnum>@S@@")
 105 !4 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "S", file: !1, line: 4, size: 8, flags: DIFlagTypePassByValue, elements: !5, identifier: ".?AUS@@")
 106 !5 = !{!6, !9, !10, !3}
 107 !6 = !DIDerivedType(tag: DW_TAG_member, name: "TestConst2", scope: !4, file: !1, line: 5, baseType: !7, flags: DIFlagStaticMember, extraData: i32 -10)
 108 !7 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !8)
 109 !8 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
 110 !9 = !DIDerivedType(tag: DW_TAG_member, name: "TestConst3", scope: !4, file: !1, line: 6, baseType: !7, flags: DIFlagStaticMember, extraData: i32 3)
 111 !10 = !DIDerivedType(tag: DW_TAG_member, name: "TestConst4", scope: !4, file: !1, line: 7, baseType: !7, flags: DIFlagStaticMember, extraData: i32 4)
 112 !11 = !{!12}
 113 !12 = !DIEnumerator(name: "SEnum", value: 42)
 114 !13 = !DICompositeType(tag: DW_TAG_enumeration_type, name: "TestEnum", file: !1, line: 10, baseType: !8, size: 32, elements: !14, identifier: ".?AW4TestEnum@@")
 115 !14 = !{!15, !16}
 116 !15 = !DIEnumerator(name: "ENUM_A", value: 2147000000)
 117 !16 = !DIEnumerator(name: "ENUM_B", value: -2147000000)
 118 !17 = !{!4}
 119 !18 = !{!19, !24}
 120 !19 = !DIGlobalVariableExpression(var: !20, expr: !DIExpression(DW_OP_constu, 1078523331, DW_OP_stack_value))
 121 !20 = distinct !DIGlobalVariable(name: "TestConst1", scope: !21, file: !1, line: 2, type: !22, isLocal: true, isDefinition: true)
 122 !21 = !DINamespace(name: "Test1", scope: null)
 123 !22 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !23)
 124 !23 = !DIBasicType(name: "float", size: 32, encoding: DW_ATE_float)
 125 !24 = !DIGlobalVariableExpression(var: !25, expr: !DIExpression(DW_OP_constu, 18446744071562551616, DW_OP_stack_value))
 126 !25 = distinct !DIGlobalVariable(name: "ENUM_B", scope: !0, file: !1, line: 12, type: !13, isLocal: true, isDefinition: true)
 127 !26 = !{i32 2, !"CodeView", i32 1}
 128 !27 = !{i32 2, !"Debug Info Version", i32 3}
 129 !28 = !{i32 1, !"wchar_size", i32 2}
 130 !29 = !{i32 7, !"PIC Level", i32 2}
 131 !30 = !{!"clang version 12.0.0 (https://github.com/llvm/llvm-project.git 34cd06a9b3bddaa7a989c606bbf1327ee651711c)"}
 132 !31 = distinct !DISubprogram(name: "foo", linkageName: "?foo@@YAXXZ", scope: !1, file: !1, line: 15, type: !32, scopeLine: 15, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !34)
 133 !32 = !DISubroutineType(types: !33)
 134 !33 = !{null}
 135 !34 = !{}
 136 !35 = !DILocation(line: 16, scope: !31)
 137 !36 = !DILocation(line: 17, scope: !31)
 138 !37 = !DILocation(line: 18, scope: !31)
 139 !38 = !DILocation(line: 19, scope: !31)
 140 !39 = !DILocation(line: 20, scope: !31)