derek.holloway
7502bf64a4
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213 lines
8.7 KiB
LLVM
213 lines
8.7 KiB
LLVM
; RUN: llc < %s | FileCheck %s --check-prefix=ASM
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; RUN: llc < %s -filetype=obj | llvm-readobj - --codeview | FileCheck %s --check-prefix=OBJ
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; C++ source to regenerate:
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; struct Foo {
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; int a;
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; int b;
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; int c;
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; int d;
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; };
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;
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; int main() {
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; Foo f{1, 2, 3, 4};
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; auto &[a, b, c, d] = f;
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; return a;
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; }
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; $ clang t.cpp -S -emit-llvm -g -o t.ll -std=c++17
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; ASM-LABEL: .long 241 # Symbol subsection for main
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; ASM: .short 4414 # Record kind: S_LOCAL
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; ASM-NEXT: .long 4101 # TypeIndex
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; ASM-NEXT: .short 0 # Flags
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; ASM-NEXT: .asciz "f"
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; ASM-NEXT: .p2align 2, 0x0
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; ASM-NEXT: .Ltmp{{.*}}:
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; ASM-NEXT: .cv_def_range .Ltmp0 .Ltmp1, frame_ptr_rel, 16
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; ASM: .short 4414 # Record kind: S_LOCAL
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; ASM-NEXT: .long 116 # TypeIndex
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; ASM-NEXT: .short 0 # Flags
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; ASM-NEXT: .asciz "a"
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; ASM-NEXT: .p2align 2, 0x0
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; ASM-NEXT: .Ltmp{{.*}}:
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; ASM-NEXT: .cv_def_range .Ltmp{{.*}} .Ltmp{{.*}}, reg_rel_indir, 335, 0, 0, 0
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; ASM: .short 4414 # Record kind: S_LOCAL
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; ASM-NEXT: .long 116 # TypeIndex
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; ASM-NEXT: .short 0 # Flags
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; ASM-NEXT: .asciz "b"
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; ASM-NEXT: .p2align 2, 0x0
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; ASM-NEXT: .Ltmp{{.*}}:
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; ASM-NEXT: .cv_def_range .Ltmp{{.*}} .Ltmp{{.*}}, reg_rel_indir, 335, 0, 0, 4
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; ASM: .short 4414 # Record kind: S_LOCAL
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; ASM-NEXT: .long 116 # TypeIndex
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; ASM-NEXT: .short 0 # Flags
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; ASM-NEXT: .asciz "c"
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; ASM-NEXT: .p2align 2, 0x0
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; ASM-NEXT: .Ltmp{{.*}}:
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; ASM-NEXT: .cv_def_range .Ltmp{{.*}} .Ltmp{{.*}}, reg_rel_indir, 335, 0, 0, 8
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; ASM: .short 4414 # Record kind: S_LOCAL
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; ASM-NEXT: .long 116 # TypeIndex
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; ASM-NEXT: .short 0 # Flags
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; ASM-NEXT: .asciz "d"
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; ASM-NEXT: .p2align 2, 0x0
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; ASM-NEXT: .Ltmp{{.*}}:
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; ASM-NEXT: .cv_def_range .Ltmp{{.*}} .Ltmp{{.*}}, reg_rel_indir, 335, 0, 0, 12
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; OBJ: Subsection [
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; OBJ: SubSectionType: Symbols (0xF1)
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; OBJ: GlobalProcIdSym {
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; OBJ: FunctionType: main (0x1002)
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; OBJ: }
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; OBJ: LocalSym {
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; OBJ: Kind: S_LOCAL (0x113E)
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; OBJ: Type: Foo (0x1005)
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; OBJ: VarName: f
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; OBJ: }
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; OBJ: DefRangeFramePointerRelSym {
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; OBJ: Kind: S_DEFRANGE_FRAMEPOINTER_REL (0x1142)
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; OBJ: Offset: 16
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; OBJ: LocalVariableAddrRange {
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; OBJ: }
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; OBJ: }
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; OBJ: LocalSym {
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; OBJ: Kind: S_LOCAL (0x113E)
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; OBJ: Type: int (0x74)
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; OBJ: Flags [ (0x0)
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; OBJ: ]
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; OBJ: VarName: a
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; OBJ: }
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; OBJ: DefRangeRegisterRelIndirSym {
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; OBJ: Kind: S_DEFRANGE_REGISTER_REL_INDIR (0x1177)
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; OBJ: BaseRegister: RSP (0x14F)
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; OBJ: HasSpilledUDTMember: No
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; OBJ: OffsetInParent: 0
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; OBJ: BasePointerOffset: 0
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; OBJ: OffsetInUDT: 0
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; OBJ: LocalVariableAddrRange {
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; OBJ: }
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; OBJ: }
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; OBJ: LocalSym {
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; OBJ: Kind: S_LOCAL (0x113E)
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; OBJ: Type: int (0x74)
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; OBJ: Flags [ (0x0)
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; OBJ: ]
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; OBJ: VarName: b
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; OBJ: }
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; OBJ: DefRangeRegisterRelIndirSym {
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; OBJ: Kind: S_DEFRANGE_REGISTER_REL_INDIR (0x1177)
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; OBJ: BaseRegister: RSP (0x14F)
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; OBJ: HasSpilledUDTMember: No
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; OBJ: OffsetInParent: 0
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; OBJ: BasePointerOffset: 0
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; OBJ: OffsetInUDT: 4
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; OBJ: LocalVariableAddrRange {
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; OBJ: }
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; OBJ: }
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; OBJ: LocalSym {
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; OBJ: Kind: S_LOCAL (0x113E)
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; OBJ: Type: int (0x74)
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; OBJ: Flags [ (0x0)
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; OBJ: ]
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; OBJ: VarName: c
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; OBJ: }
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; OBJ: DefRangeRegisterRelIndirSym {
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; OBJ: Kind: S_DEFRANGE_REGISTER_REL_INDIR (0x1177)
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; OBJ: BaseRegister: RSP (0x14F)
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; OBJ: HasSpilledUDTMember: No
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; OBJ: OffsetInParent: 0
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; OBJ: BasePointerOffset: 0
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; OBJ: OffsetInUDT: 8
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; OBJ: LocalVariableAddrRange {
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; OBJ: }
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; OBJ: }
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; OBJ: LocalSym {
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; OBJ: Kind: S_LOCAL (0x113E)
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; OBJ: Type: int (0x74)
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; OBJ: Flags [ (0x0)
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; OBJ: ]
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; OBJ: VarName: d
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; OBJ: }
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; OBJ: DefRangeRegisterRelIndirSym {
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; OBJ: Kind: S_DEFRANGE_REGISTER_REL_INDIR (0x1177)
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; OBJ: BaseRegister: RSP (0x14F)
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; OBJ: HasSpilledUDTMember: No
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; OBJ: OffsetInParent: 0
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; OBJ: BasePointerOffset: 0
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; OBJ: OffsetInUDT: 12
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; OBJ: LocalVariableAddrRange {
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; OBJ: }
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; OBJ: }
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; ModuleID = 't.cpp'
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source_filename = "t.cpp"
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target datalayout = "e-m:w-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-pc-windows-msvc19.50.35725"
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%struct.Foo = type { i32, i32, i32, i32 }
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@__const.main.f = private unnamed_addr constant %struct.Foo { i32 1, i32 2, i32 3, i32 4 }, align 4
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; Function Attrs: mustprogress noinline norecurse nounwind optnone uwtable
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define dso_local noundef i32 @main() #0 !dbg !9 {
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%1 = alloca i32, align 4
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%2 = alloca %struct.Foo, align 4
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%3 = alloca ptr, align 8
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store i32 0, ptr %1, align 4
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#dbg_declare(ptr %2, !14, !DIExpression(), !21)
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call void @llvm.memcpy.p0.p0.i64(ptr align 4 %2, ptr align 4 @__const.main.f, i64 16, i1 false), !dbg !21
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#dbg_declare(ptr %3, !22, !DIExpression(DW_OP_deref), !23)
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#dbg_declare(ptr %3, !24, !DIExpression(DW_OP_deref, DW_OP_plus_uconst, 4), !23)
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#dbg_declare(ptr %3, !25, !DIExpression(DW_OP_deref, DW_OP_plus_uconst, 8), !23)
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#dbg_declare(ptr %3, !26, !DIExpression(DW_OP_deref, DW_OP_plus_uconst, 12), !23)
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store ptr %2, ptr %3, align 8, !dbg !23
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%4 = load ptr, ptr %3, align 8, !dbg !27, !nonnull !13, !align !28
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%5 = getelementptr inbounds nuw %struct.Foo, ptr %4, i32 0, i32 0, !dbg !27
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%6 = load i32, ptr %5, align 4, !dbg !27
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ret i32 %6, !dbg !27
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}
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; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: readwrite)
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declare void @llvm.memcpy.p0.p0.i64(ptr noalias writeonly captures(none), ptr noalias readonly captures(none), i64, i1 immarg) #1
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attributes #0 = { mustprogress noinline norecurse nounwind optnone uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
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attributes #1 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!2, !3, !4, !5, !6, !7}
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!llvm.ident = !{!8}
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!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !1, producer: "clang version 21.1.8", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, splitDebugInlining: false, nameTableKind: None)
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!1 = !DIFile(filename: "t.cpp", directory: "F:\\Dev\\dummy", checksumkind: CSK_MD5, checksum: "e257352cbba404e4548bc4500877ceb0")
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!2 = !{i32 2, !"CodeView", i32 1}
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!3 = !{i32 2, !"Debug Info Version", i32 3}
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!4 = !{i32 1, !"wchar_size", i32 2}
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!5 = !{i32 8, !"PIC Level", i32 2}
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!6 = !{i32 7, !"uwtable", i32 2}
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!7 = !{i32 1, !"MaxTLSAlign", i32 65536}
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!8 = !{!"clang version 21.1.8"}
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!9 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 8, type: !10, scopeLine: 8, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !13)
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!10 = !DISubroutineType(types: !11)
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!11 = !{!12}
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!12 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!13 = !{}
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!14 = !DILocalVariable(name: "f", scope: !9, file: !1, line: 9, type: !15)
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!15 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "Foo", file: !1, line: 1, size: 128, flags: DIFlagTypePassByValue, elements: !16, identifier: ".?AUFoo@@")
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!16 = !{!17, !18, !19, !20}
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!17 = !DIDerivedType(tag: DW_TAG_member, name: "a", scope: !15, file: !1, line: 2, baseType: !12, size: 32)
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!18 = !DIDerivedType(tag: DW_TAG_member, name: "b", scope: !15, file: !1, line: 3, baseType: !12, size: 32, offset: 32)
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!19 = !DIDerivedType(tag: DW_TAG_member, name: "c", scope: !15, file: !1, line: 4, baseType: !12, size: 32, offset: 64)
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!20 = !DIDerivedType(tag: DW_TAG_member, name: "d", scope: !15, file: !1, line: 5, baseType: !12, size: 32, offset: 96)
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!21 = !DILocation(line: 9, scope: !9)
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!22 = !DILocalVariable(name: "a", scope: !9, file: !1, line: 10, type: !12)
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!23 = !DILocation(line: 10, scope: !9)
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!24 = !DILocalVariable(name: "b", scope: !9, file: !1, line: 10, type: !12)
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!25 = !DILocalVariable(name: "c", scope: !9, file: !1, line: 10, type: !12)
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!26 = !DILocalVariable(name: "d", scope: !9, file: !1, line: 10, type: !12)
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!27 = !DILocation(line: 11, scope: !9)
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!28 = !{i64 4}
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