; LLVM IR from bqi343/cp-notebook :: Contests/Other Solutions/UCF HSPT/2017/UCF HSPT 17 - lerps.ll (Z5solvev)

; 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_istream" = type { ptr, i64, %"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.std::basic_ostream" = type { ptr, %"class.std::basic_ios" }

@dp = external dso_local global [1001 x i32], align 16
@num = external dso_local global [1001 x i32], align 16
@z = external dso_local global i32, align 4
@_ZSt3cin = external global %"class.std::basic_istream", align 8
@_ZSt4cout = external global %"class.std::basic_ostream", align 8

; Function Attrs: mustprogress uwtable
define dso_local void @_Z5solvev() #0 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) @z)
  call void @llvm.lifetime.start.p0(i64 4, ptr %1) #4
  store i32 1, ptr %1, align 4, !tbaa !5
  br label %7

7:                                                ; preds = %72, %0
  %8 = load i32, ptr %1, align 4, !tbaa !5
  %9 = load i32, ptr @z, align 4, !tbaa !5
  %10 = add nsw i32 %9, 1
  %11 = icmp slt i32 %8, %10
  br i1 %11, label %13, label %12

12:                                               ; preds = %7
  store i32 2, ptr %2, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %1) #4
  br label %75

13:                                               ; preds = %7
  %14 = load i32, ptr %1, align 4, !tbaa !5
  %15 = sext i32 %14 to i64
  %16 = getelementptr inbounds [1001 x i32], ptr @num, i64 0, i64 %15
  %17 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %16)
  %18 = load i32, ptr %1, align 4, !tbaa !5
  %19 = sext i32 %18 to i64
  %20 = getelementptr inbounds [1001 x i32], ptr @dp, i64 0, i64 %19
  store i32 0, ptr %20, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #4
  store i32 0, ptr %3, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #4
  %21 = load i32, ptr %1, align 4, !tbaa !5
  %22 = add nsw i32 %21, 1
  %23 = sub nsw i32 %22, 1
  store i32 %23, ptr %4, align 4, !tbaa !5
  br label %24

24:                                               ; preds = %68, %13
  %25 = load i32, ptr %4, align 4, !tbaa !5
  %26 = icmp sge i32 %25, 1
  br i1 %26, label %28, label %27

27:                                               ; preds = %24
  store i32 5, ptr %2, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #4
  br label %71

28:                                               ; preds = %24
  %29 = load i32, ptr %4, align 4, !tbaa !5
  %30 = sext i32 %29 to i64
  %31 = getelementptr inbounds [1001 x i32], ptr @num, i64 0, i64 %30
  %32 = load i32, ptr %31, align 4, !tbaa !5
  %33 = load i32, ptr %3, align 4, !tbaa !5
  %34 = add nsw i32 %33, %32
  store i32 %34, ptr %3, align 4, !tbaa !5
  %35 = load i32, ptr %3, align 4, !tbaa !5
  %36 = and i32 %35, 1
  %37 = icmp ne i32 %36, 0
  br i1 %37, label %38, label %51

38:                                               ; preds = %28
  %39 = load i32, ptr %1, align 4, !tbaa !5
  %40 = sext i32 %39 to i64
  %41 = getelementptr inbounds [1001 x i32], ptr @dp, i64 0, i64 %40
  %42 = load i32, ptr %4, align 4, !tbaa !5
  %43 = sub nsw i32 %42, 1
  %44 = sext i32 %43 to i64
  %45 = getelementptr inbounds [1001 x i32], ptr @dp, i64 0, i64 %44
  %46 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) %41, ptr noundef nonnull align 4 dereferenceable(4) %45)
  %47 = load i32, ptr %46, align 4, !tbaa !5
  %48 = load i32, ptr %1, align 4, !tbaa !5
  %49 = sext i32 %48 to i64
  %50 = getelementptr inbounds [1001 x i32], ptr @dp, i64 0, i64 %49
  store i32 %47, ptr %50, align 4, !tbaa !5
  br label %67

51:                                               ; preds = %28
  %52 = load i32, ptr %1, align 4, !tbaa !5
  %53 = sext i32 %52 to i64
  %54 = getelementptr inbounds [1001 x i32], ptr @dp, i64 0, i64 %53
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #4
  %55 = load i32, ptr %4, align 4, !tbaa !5
  %56 = sub nsw i32 %55, 1
  %57 = sext i32 %56 to i64
  %58 = getelementptr inbounds [1001 x i32], ptr @dp, i64 0, i64 %57
  %59 = load i32, ptr %58, align 4, !tbaa !5
  %60 = load i32, ptr %3, align 4, !tbaa !5
  %61 = add nsw i32 %59, %60
  store i32 %61, ptr %5, align 4, !tbaa !5
  %62 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) %54, ptr noundef nonnull align 4 dereferenceable(4) %5)
  %63 = load i32, ptr %62, align 4, !tbaa !5
  %64 = load i32, ptr %1, align 4, !tbaa !5
  %65 = sext i32 %64 to i64
  %66 = getelementptr inbounds [1001 x i32], ptr @dp, i64 0, i64 %65
  store i32 %63, ptr %66, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #4
  br label %67

67:                                               ; preds = %51, %38
  br label %68

68:                                               ; preds = %67
  %69 = load i32, ptr %4, align 4, !tbaa !5
  %70 = add nsw i32 %69, -1
  store i32 %70, ptr %4, align 4, !tbaa !5
  br label %24, !llvm.loop !9

71:                                               ; preds = %27
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #4
  br label %72

72:                                               ; preds = %71
  %73 = load i32, ptr %1, align 4, !tbaa !5
  %74 = add nsw i32 %73, 1
  store i32 %74, ptr %1, align 4, !tbaa !5
  br label %7, !llvm.loop !11

75:                                               ; preds = %12
  %76 = load i32, ptr @z, align 4, !tbaa !5
  %77 = sext i32 %76 to i64
  %78 = getelementptr inbounds [1001 x i32], ptr @dp, i64 0, i64 %77
  %79 = load i32, ptr %78, align 4, !tbaa !5
  %80 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef %79)
  ret void
}

declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 4 dereferenceable(4)) #1

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

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) #3

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

declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8), i32 noundef) #1

attributes #0 = { 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 = { "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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = distinct !{!11, !10}


; 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_istream" = type { ptr, i64, %"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.std::basic_ostream" = type { ptr, %"class.std::basic_ios" }

@dp = external dso_local global [1001 x i32], align 16
@num = external dso_local global [1001 x i32], align 16
@z = external dso_local global i32, align 4
@_ZSt3cin = external global %"class.std::basic_istream", align 8
@_ZSt4cout = external global %"class.std::basic_ostream", align 8

; Function Attrs: mustprogress uwtable
define dso_local void @_Z5solvev() local_unnamed_addr #0 {
  %1 = alloca i32, align 4
  %2 = tail call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) @z)
  %3 = load i32, ptr @z, align 4, !tbaa !5
  %.not22 = icmp slt i32 %3, 1
  br i1 %.not22, label %.._crit_edge_crit_edge, label %.lr.ph

.._crit_edge_crit_edge:                           ; preds = %0
  %.pre = sext i32 %3 to i64
  br label %._crit_edge

.loopexit:                                        ; preds = %31
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %4 = load i32, ptr @z, align 4, !tbaa !5
  %5 = sext i32 %4 to i64
  %.not.not = icmp slt i64 %indvars.iv, %5
  br i1 %.not.not, label %.lr.ph, label %._crit_edge, !llvm.loop !9

._crit_edge:                                      ; preds = %.loopexit, %.._crit_edge_crit_edge
  %.pre-phi = phi i64 [ %.pre, %.._crit_edge_crit_edge ], [ %5, %.loopexit ]
  %6 = getelementptr inbounds [1001 x i32], ptr @dp, i64 0, i64 %.pre-phi
  %7 = load i32, ptr %6, align 4, !tbaa !5
  %8 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef %7)
  ret void

.lr.ph:                                           ; preds = %0, %.loopexit
  %indvars.iv = phi i64 [ %indvars.iv.next, %.loopexit ], [ 1, %0 ]
  %9 = getelementptr inbounds [1001 x i32], ptr @num, i64 0, i64 %indvars.iv
  %10 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %9)
  %11 = getelementptr inbounds [1001 x i32], ptr @dp, i64 0, i64 %indvars.iv
  store i32 0, ptr %11, align 4, !tbaa !5
  br label %12

12:                                               ; preds = %.lr.ph, %31
  %indvars.iv25 = phi i64 [ %indvars.iv, %.lr.ph ], [ %indvars.iv.next26, %31 ]
  %.01720 = phi i32 [ 0, %.lr.ph ], [ %15, %31 ]
  %13 = getelementptr inbounds [1001 x i32], ptr @num, i64 0, i64 %indvars.iv25
  %14 = load i32, ptr %13, align 4, !tbaa !5
  %15 = add nsw i32 %14, %.01720
  %16 = and i32 %15, 1
  %.not19 = icmp eq i32 %16, 0
  br i1 %.not19, label %23, label %17

17:                                               ; preds = %12
  %18 = add i64 %indvars.iv25, 4294967295
  %19 = and i64 %18, 4294967295
  %20 = getelementptr inbounds [1001 x i32], ptr @dp, i64 0, i64 %19
  %21 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) %11, ptr noundef nonnull align 4 dereferenceable(4) %20)
  %22 = load i32, ptr %21, align 4, !tbaa !5
  br label %31

23:                                               ; preds = %12
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #4
  %24 = add i64 %indvars.iv25, 4294967295
  %25 = and i64 %24, 4294967295
  %26 = getelementptr inbounds [1001 x i32], ptr @dp, i64 0, i64 %25
  %27 = load i32, ptr %26, align 4, !tbaa !5
  %28 = add nsw i32 %27, %15
  store i32 %28, ptr %1, align 4, !tbaa !5
  %29 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) %11, ptr noundef nonnull align 4 dereferenceable(4) %1)
  %30 = load i32, ptr %29, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #4
  br label %31

31:                                               ; preds = %17, %23
  %.sink = phi i32 [ %30, %23 ], [ %22, %17 ]
  store i32 %.sink, ptr %11, align 4
  %indvars.iv.next26 = add nsw i64 %indvars.iv25, -1
  %32 = icmp sgt i64 %indvars.iv25, 1
  br i1 %32, label %12, label %.loopexit, !llvm.loop !11
}

declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #1

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

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #3

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

declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8), i32 noundef) local_unnamed_addr #1

attributes #0 = { 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 = { "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 = { mustprogress 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = distinct !{!11, !10}


; Effective O3 passes: BDCEPass,EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,MergedLoadStoreMotionPass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass