; LLVM IR from Ubpa/USTC_CG :: Homeworks/0_CppPratices/documents/1_BasicDArray/C2Cpp/src/Array (Array)

; Unoptimized IR (clang -disable-llvm-passes):
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

%"class.std::basic_ostream" = type { ptr, %"class.std::basic_ios" }
%"class.std::basic_ios" = type { %"class.std::ios_base", ptr, i8, i8, ptr, ptr, ptr, ptr }
%"class.std::ios_base" = type { ptr, i64, i64, i32, i32, i32, ptr, %"struct.std::ios_base::_Words", [8 x %"struct.std::ios_base::_Words"], i32, ptr, %"class.std::locale" }
%"struct.std::ios_base::_Words" = type { ptr, i64 }
%"class.std::locale" = type { ptr }
%class.Array = type <{ [15 x double], i32, [4 x i8] }>

@_ZSt4cout = external global %"class.std::basic_ostream", align 8
@.str.7 = external hidden unnamed_addr constant [33 x i8], align 1

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) #0

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) #1 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_(ptr noundef nonnull align 8 dereferenceable(8)) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef i32 @_ZN5Array15InvalidateIndexEi(ptr noundef nonnull align 8 dereferenceable(124), i32 noundef) #3 align 2

; Function Attrs: mustprogress uwtable
define dso_local noundef i32 @_ZN5Array8DeleteAtEi(ptr noundef nonnull align 8 dereferenceable(124) %0, i32 noundef %1) #1 align 2 {
  %3 = alloca i32, align 4
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !9
  %7 = load ptr, ptr %4, align 8
  %8 = load i32, ptr %5, align 4, !tbaa !9
  %9 = call noundef i32 @_ZN5Array15InvalidateIndexEi(ptr noundef nonnull align 8 dereferenceable(124) %7, i32 noundef %8)
  %10 = icmp ne i32 %9, 0
  br i1 %10, label %11, label %14

11:                                               ; preds = %2
  %12 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef @.str.7)
  %13 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %12, ptr noundef @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
  store i32 0, ptr %3, align 4
  br label %41

14:                                               ; preds = %2
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #4
  %15 = load i32, ptr %5, align 4, !tbaa !9
  store i32 %15, ptr %6, align 4, !tbaa !9
  br label %16

16:                                               ; preds = %34, %14
  %17 = load i32, ptr %6, align 4, !tbaa !9
  %18 = getelementptr inbounds %class.Array, ptr %7, i32 0, i32 1
  %19 = load i32, ptr %18, align 8, !tbaa !11
  %20 = sub nsw i32 %19, 1
  %21 = icmp slt i32 %17, %20
  br i1 %21, label %23, label %22

22:                                               ; preds = %16
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #4
  br label %37

23:                                               ; preds = %16
  %24 = getelementptr inbounds %class.Array, ptr %7, i32 0, i32 0
  %25 = load i32, ptr %6, align 4, !tbaa !9
  %26 = add nsw i32 %25, 1
  %27 = sext i32 %26 to i64
  %28 = getelementptr inbounds [15 x double], ptr %24, i64 0, i64 %27
  %29 = load double, ptr %28, align 8, !tbaa !13
  %30 = getelementptr inbounds %class.Array, ptr %7, i32 0, i32 0
  %31 = load i32, ptr %6, align 4, !tbaa !9
  %32 = sext i32 %31 to i64
  %33 = getelementptr inbounds [15 x double], ptr %30, i64 0, i64 %32
  store double %29, ptr %33, align 8, !tbaa !13
  br label %34

34:                                               ; preds = %23
  %35 = load i32, ptr %6, align 4, !tbaa !9
  %36 = add nsw i32 %35, 1
  store i32 %36, ptr %6, align 4, !tbaa !9
  br label %16, !llvm.loop !15

37:                                               ; preds = %22
  %38 = getelementptr inbounds %class.Array, ptr %7, i32 0, i32 1
  %39 = load i32, ptr %38, align 8, !tbaa !11
  %40 = add nsw i32 %39, -1
  store i32 %40, ptr %38, align 8, !tbaa !11
  store i32 1, ptr %3, align 4
  br label %41

41:                                               ; preds = %37, %11
  %42 = load i32, ptr %3, align 4
  ret i32 %42
}

attributes #0 = { inlinehint mustprogress 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" }
attributes #1 = { mustprogress 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" }
attributes #2 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { inlinehint mustprogress nounwind 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" }
attributes #4 = { nounwind }

!llvm.module.flags = !{!0, !1, !2, !3}
!llvm.ident = !{!4}

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !10, i64 120}
!12 = !{!"_ZTS5Array", !7, i64 0, !10, i64 120}
!13 = !{!14, !14, i64 0}
!14 = !{!"double", !7, i64 0}
!15 = distinct !{!15, !16}
!16 = !{!"llvm.loop.mustprogress"}


; Optimized IR (opt -passes='default<O3>'):
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

%"class.std::basic_ostream" = type { ptr, %"class.std::basic_ios" }
%"class.std::basic_ios" = type { %"class.std::ios_base", ptr, i8, i8, ptr, ptr, ptr, ptr }
%"class.std::ios_base" = type { ptr, i64, i64, i32, i32, i32, ptr, %"struct.std::ios_base::_Words", [8 x %"struct.std::ios_base::_Words"], i32, ptr, %"class.std::locale" }
%"struct.std::ios_base::_Words" = type { ptr, i64 }
%"class.std::locale" = type { ptr }

@_ZSt4cout = external global %"class.std::basic_ostream", align 8
@.str.7 = external hidden unnamed_addr constant [33 x i8], align 1

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) local_unnamed_addr #0

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) local_unnamed_addr #1 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_(ptr noundef nonnull align 8 dereferenceable(8)) #0

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef i32 @_ZN5Array15InvalidateIndexEi(ptr noundef nonnull align 8 dereferenceable(124), i32 noundef) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
define dso_local noundef range(i32 0, 2) i32 @_ZN5Array8DeleteAtEi(ptr noundef nonnull align 8 dereferenceable(124) %0, i32 noundef %1) local_unnamed_addr #1 align 2 {
  %3 = tail call noundef i32 @_ZN5Array15InvalidateIndexEi(ptr noundef nonnull align 8 dereferenceable(124) %0, i32 noundef %1)
  %.not = icmp eq i32 %3, 0
  br i1 %.not, label %.preheader, label %18

.preheader:                                       ; preds = %2
  %4 = getelementptr inbounds i8, ptr %0, i64 120
  %5 = load i32, ptr %4, align 8, !tbaa !5
  %6 = add nsw i32 %5, -1
  %7 = icmp sgt i32 %6, %1
  br i1 %7, label %.lr.ph.preheader, label %._crit_edge

.lr.ph.preheader:                                 ; preds = %.preheader
  %8 = sext i32 %1 to i64
  %wide.trip.count = sext i32 %6 to i64
  %9 = sext i32 %5 to i64
  %10 = xor i64 %8, -1
  %11 = add nsw i64 %10, %9
  %min.iters.check = icmp ult i64 %11, 4
  br i1 %min.iters.check, label %.lr.ph.preheader13, label %vector.ph

.lr.ph.preheader13:                               ; preds = %middle.block, %.lr.ph.preheader
  %indvars.iv.ph = phi i64 [ %8, %.lr.ph.preheader ], [ %ind.end, %middle.block ]
  br label %.lr.ph

vector.ph:                                        ; preds = %.lr.ph.preheader
  %n.vec = and i64 %11, -4
  %ind.end = add nsw i64 %n.vec, %8
  br label %vector.body

vector.body:                                      ; preds = %vector.body, %vector.ph
  %index = phi i64 [ 0, %vector.ph ], [ %index.next, %vector.body ]
  %offset.idx = add i64 %index, %8
  %12 = add nsw i64 %offset.idx, 1
  %13 = getelementptr inbounds [15 x double], ptr %0, i64 0, i64 %12
  %14 = getelementptr inbounds i8, ptr %13, i64 16
  %wide.load = load <2 x double>, ptr %13, align 8, !tbaa !10
  %wide.load12 = load <2 x double>, ptr %14, align 8, !tbaa !10
  %15 = getelementptr inbounds [15 x double], ptr %0, i64 0, i64 %offset.idx
  %16 = getelementptr inbounds i8, ptr %15, i64 16
  store <2 x double> %wide.load, ptr %15, align 8, !tbaa !10
  store <2 x double> %wide.load12, ptr %16, align 8, !tbaa !10
  %index.next = add nuw i64 %index, 4
  %17 = icmp eq i64 %index.next, %n.vec
  br i1 %17, label %middle.block, label %vector.body, !llvm.loop !12

middle.block:                                     ; preds = %vector.body
  %cmp.n = icmp eq i64 %11, %n.vec
  br i1 %cmp.n, label %._crit_edge, label %.lr.ph.preheader13

18:                                               ; preds = %2
  %19 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef nonnull @.str.7)
  %20 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %19, ptr noundef nonnull @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
  br label %24

._crit_edge:                                      ; preds = %.lr.ph, %middle.block, %.preheader
  store i32 %6, ptr %4, align 8, !tbaa !5
  br label %24

.lr.ph:                                           ; preds = %.lr.ph.preheader13, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ %indvars.iv.ph, %.lr.ph.preheader13 ]
  %indvars.iv.next = add nsw i64 %indvars.iv, 1
  %21 = getelementptr inbounds [15 x double], ptr %0, i64 0, i64 %indvars.iv.next
  %22 = load double, ptr %21, align 8, !tbaa !10
  %23 = getelementptr inbounds [15 x double], ptr %0, i64 0, i64 %indvars.iv
  store double %22, ptr %23, align 8, !tbaa !10
  %exitcond.not = icmp eq i64 %indvars.iv.next, %wide.trip.count
  br i1 %exitcond.not, label %._crit_edge, label %.lr.ph, !llvm.loop !16

24:                                               ; preds = %._crit_edge, %18
  %.07 = phi i32 [ 0, %18 ], [ 1, %._crit_edge ]
  ret i32 %.07
}

attributes #0 = { inlinehint mustprogress 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" }
attributes #1 = { mustprogress 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" }
attributes #2 = { inlinehint mustprogress nounwind 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" }

!llvm.module.flags = !{!0, !1, !2, !3}
!llvm.ident = !{!4}

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !9, i64 120}
!6 = !{!"_ZTS5Array", !7, i64 0, !9, i64 120}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!"int", !7, i64 0}
!10 = !{!11, !11, i64 0}
!11 = !{!"double", !7, i64 0}
!12 = distinct !{!12, !13, !14, !15}
!13 = !{!"llvm.loop.mustprogress"}
!14 = !{!"llvm.loop.isvectorized", i32 1}
!15 = !{!"llvm.loop.unroll.runtime.disable"}
!16 = distinct !{!16, !13, !15, !14}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LCSSAPass,LICMPass,LoopLoadEliminationPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,LoopVectorizePass,SROAPass,SimplifyCFGPass,TailCallElimPass