; LLVM IR from DionysiosB/CodeForces :: 0100-0199 (157B-Trace)

; 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"

@.str = external hidden unnamed_addr constant [3 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [8 x i8], align 1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #0 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca double, align 8
  %6 = alloca i32, align 4
  %7 = alloca double, align 8
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #6
  %8 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %2)
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #6
  %9 = load i32, ptr %2, align 4, !tbaa !5
  %10 = add nsw i32 %9, 1
  %11 = sext i32 %10 to i64
  %12 = call { i64, i1 } @llvm.umul.with.overflow.i64(i64 %11, i64 8)
  %13 = extractvalue { i64, i1 } %12, 1
  %14 = extractvalue { i64, i1 } %12, 0
  %15 = select i1 %13, i64 -1, i64 %14
  %16 = call noalias noundef nonnull ptr @_Znam(i64 noundef %15) #7
  store ptr %16, ptr %3, align 8, !tbaa !9
  %17 = load ptr, ptr %3, align 8, !tbaa !9
  %18 = getelementptr inbounds i64, ptr %17, i64 0
  store i64 0, ptr %18, align 8, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #6
  store i32 1, ptr %4, align 4, !tbaa !5
  br label %19

19:                                               ; preds = %30, %0
  %20 = load i32, ptr %4, align 4, !tbaa !5
  %21 = load i32, ptr %2, align 4, !tbaa !5
  %22 = icmp sle i32 %20, %21
  br i1 %22, label %24, label %23

23:                                               ; preds = %19
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #6
  br label %33

24:                                               ; preds = %19
  %25 = load ptr, ptr %3, align 8, !tbaa !9
  %26 = load i32, ptr %4, align 4, !tbaa !5
  %27 = sext i32 %26 to i64
  %28 = getelementptr inbounds i64, ptr %25, i64 %27
  %29 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.1, ptr noundef %28)
  br label %30

30:                                               ; preds = %24
  %31 = load i32, ptr %4, align 4, !tbaa !5
  %32 = add nsw i32 %31, 1
  store i32 %32, ptr %4, align 4, !tbaa !5
  br label %19, !llvm.loop !13

33:                                               ; preds = %23
  %34 = load ptr, ptr %3, align 8, !tbaa !9
  %35 = load ptr, ptr %3, align 8, !tbaa !9
  %36 = load i32, ptr %2, align 4, !tbaa !5
  %37 = sext i32 %36 to i64
  %38 = getelementptr inbounds i64, ptr %35, i64 %37
  %39 = getelementptr inbounds i64, ptr %38, i64 1
  call void @_ZSt4sortIPlEvT_S1_(ptr noundef %34, ptr noundef %39)
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #6
  store double 0.000000e+00, ptr %5, align 8, !tbaa !15
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #6
  %40 = load i32, ptr %2, align 4, !tbaa !5
  store i32 %40, ptr %6, align 4, !tbaa !5
  br label %41

41:                                               ; preds = %74, %33
  %42 = load i32, ptr %6, align 4, !tbaa !5
  %43 = icmp sgt i32 %42, 0
  br i1 %43, label %45, label %44

44:                                               ; preds = %41
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #6
  br label %77

45:                                               ; preds = %41
  %46 = load ptr, ptr %3, align 8, !tbaa !9
  %47 = load i32, ptr %6, align 4, !tbaa !5
  %48 = sext i32 %47 to i64
  %49 = getelementptr inbounds i64, ptr %46, i64 %48
  %50 = load i64, ptr %49, align 8, !tbaa !11
  %51 = load ptr, ptr %3, align 8, !tbaa !9
  %52 = load i32, ptr %6, align 4, !tbaa !5
  %53 = sext i32 %52 to i64
  %54 = getelementptr inbounds i64, ptr %51, i64 %53
  %55 = load i64, ptr %54, align 8, !tbaa !11
  %56 = mul nsw i64 %50, %55
  %57 = load ptr, ptr %3, align 8, !tbaa !9
  %58 = load i32, ptr %6, align 4, !tbaa !5
  %59 = sub nsw i32 %58, 1
  %60 = sext i32 %59 to i64
  %61 = getelementptr inbounds i64, ptr %57, i64 %60
  %62 = load i64, ptr %61, align 8, !tbaa !11
  %63 = load ptr, ptr %3, align 8, !tbaa !9
  %64 = load i32, ptr %6, align 4, !tbaa !5
  %65 = sub nsw i32 %64, 1
  %66 = sext i32 %65 to i64
  %67 = getelementptr inbounds i64, ptr %63, i64 %66
  %68 = load i64, ptr %67, align 8, !tbaa !11
  %69 = mul nsw i64 %62, %68
  %70 = sub nsw i64 %56, %69
  %71 = sitofp i64 %70 to double
  %72 = load double, ptr %5, align 8, !tbaa !15
  %73 = fadd double %72, %71
  store double %73, ptr %5, align 8, !tbaa !15
  br label %74

74:                                               ; preds = %45
  %75 = load i32, ptr %6, align 4, !tbaa !5
  %76 = sub nsw i32 %75, 2
  store i32 %76, ptr %6, align 4, !tbaa !5
  br label %41, !llvm.loop !17

77:                                               ; preds = %44
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #6
  store double 0x400921FB54442EEA, ptr %7, align 8, !tbaa !15
  %78 = load double, ptr %5, align 8, !tbaa !15
  %79 = fmul double %78, 0x400921FB54442EEA
  store double %79, ptr %5, align 8, !tbaa !15
  %80 = load double, ptr %5, align 8, !tbaa !15
  %81 = call i32 (ptr, ...) @printf(ptr noundef @.str.2, double noundef %80)
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #6
  ret i32 0
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

declare i32 @__isoc99_scanf(ptr noundef, ...) #2

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare { i64, i1 } @llvm.umul.with.overflow.i64(i64, i64) #3

; Function Attrs: nobuiltin allocsize(0)
declare noundef nonnull ptr @_Znam(i64 noundef) #4

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZSt4sortIPlEvT_S1_(ptr noundef, ptr noundef) #5

declare i32 @printf(ptr noundef, ...) #2

attributes #0 = { mustprogress norecurse 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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { "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 #3 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #4 = { nobuiltin allocsize(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 #5 = { 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 #6 = { nounwind }
attributes #7 = { builtin allocsize(0) }

!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 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"long", !7, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}
!15 = !{!16, !16, i64 0}
!16 = !{!"double", !7, i64 0}
!17 = distinct !{!17, !14}


; 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"

@.str = external hidden unnamed_addr constant [3 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [8 x i8], align 1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 {
  %1 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #5
  %2 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1)
  %3 = load i32, ptr %1, align 4, !tbaa !5
  %4 = add nsw i32 %3, 1
  %5 = sext i32 %4 to i64
  %6 = icmp slt i32 %3, -1
  %7 = shl nsw i64 %5, 3
  %8 = select i1 %6, i64 -1, i64 %7
  %9 = call noalias noundef nonnull ptr @_Znam(i64 noundef %8) #6
  store i64 0, ptr %9, align 8, !tbaa !9
  %.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

._crit_edge:                                      ; preds = %.lr.ph, %.._crit_edge_crit_edge
  %.pre-phi = phi i64 [ %.pre, %.._crit_edge_crit_edge ], [ %18, %.lr.ph ]
  %10 = getelementptr inbounds i64, ptr %9, i64 %.pre-phi
  %11 = getelementptr inbounds i8, ptr %10, i64 8
  call void @_ZSt4sortIPlEvT_S1_(ptr noundef nonnull %9, ptr noundef nonnull %11)
  %12 = load i32, ptr %1, align 4, !tbaa !5
  %13 = icmp sgt i32 %12, 0
  br i1 %13, label %.lr.ph27.preheader, label %._crit_edge28

.lr.ph27.preheader:                               ; preds = %._crit_edge
  %14 = zext nneg i32 %12 to i64
  br label %.lr.ph27

.lr.ph:                                           ; preds = %0, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 1, %0 ]
  %15 = getelementptr inbounds i64, ptr %9, i64 %indvars.iv
  %16 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.1, ptr noundef nonnull %15)
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %17 = load i32, ptr %1, align 4, !tbaa !5
  %18 = sext i32 %17 to i64
  %.not.not = icmp slt i64 %indvars.iv, %18
  br i1 %.not.not, label %.lr.ph, label %._crit_edge, !llvm.loop !11

._crit_edge28.loopexit:                           ; preds = %.lr.ph27
  %19 = fmul double %27, 0x400921FB54442EEA
  br label %._crit_edge28

._crit_edge28:                                    ; preds = %._crit_edge28.loopexit, %._crit_edge
  %.020.lcssa = phi double [ 0.000000e+00, %._crit_edge ], [ %19, %._crit_edge28.loopexit ]
  %20 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2, double noundef %.020.lcssa)
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #5
  ret i32 0

.lr.ph27:                                         ; preds = %.lr.ph27.preheader, %.lr.ph27
  %indvars.iv33 = phi i64 [ %14, %.lr.ph27.preheader ], [ %indvars.iv.next34, %.lr.ph27 ]
  %.02024 = phi double [ 0.000000e+00, %.lr.ph27.preheader ], [ %27, %.lr.ph27 ]
  %21 = getelementptr inbounds i64, ptr %9, i64 %indvars.iv33
  %22 = load i64, ptr %21, align 8, !tbaa !9
  %23 = getelementptr i8, ptr %21, i64 -8
  %24 = load i64, ptr %23, align 8, !tbaa !9
  %add = add nsw i64 %24, %22
  %sub = sub nsw i64 %22, %24
  %25 = mul nsw i64 %add, %sub
  %26 = sitofp i64 %25 to double
  %27 = fadd double %.02024, %26
  %indvars.iv.next34 = add nsw i64 %indvars.iv33, -2
  %28 = icmp ugt i64 %indvars.iv33, 2
  br i1 %28, label %.lr.ph27, label %._crit_edge28.loopexit, !llvm.loop !13
}

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nofree nounwind
declare noundef i32 @__isoc99_scanf(ptr nocapture noundef readonly, ...) local_unnamed_addr #2

; Function Attrs: nobuiltin allocsize(0)
declare noundef nonnull ptr @_Znam(i64 noundef) 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) #1

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZSt4sortIPlEvT_S1_(ptr noundef, ptr noundef) local_unnamed_addr #4

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #2

attributes #0 = { mustprogress norecurse 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 nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { nofree nounwind "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 #3 = { nobuiltin allocsize(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 = { 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 #5 = { nounwind }
attributes #6 = { builtin allocsize(0) }

!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 = !{!10, !10, i64 0}
!10 = !{!"long", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = distinct !{!13, !12}


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