; LLVM IR from Hunterdii/GeeksforGeeks-POTD :: November 2024 GFG SOLUTION (November-26)

; 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"

; Function Attrs: nounwind uwtable
declare dso_local i32 @max(i32 noundef, i32 noundef) #0

; Function Attrs: nounwind uwtable
declare dso_local i32 @min(i32 noundef, i32 noundef) #0

; Function Attrs: nounwind uwtable
define dso_local i32 @circularSubarraySum(ptr noundef %0, i32 noundef %1) #0 {
  %3 = alloca i32, align 4
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  %10 = alloca i32, align 4
  %11 = alloca i32, align 4
  %12 = alloca i32, align 4
  %13 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #2
  store i32 0, ptr %6, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #2
  store i32 -2147483648, ptr %7, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #2
  store i32 2147483647, ptr %8, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #2
  store i32 0, ptr %9, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #2
  store i32 0, ptr %10, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %11) #2
  store i32 1, ptr %11, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %12) #2
  store i32 0, ptr %12, align 4, !tbaa !9
  br label %14

14:                                               ; preds = %67, %2
  %15 = load i32, ptr %12, align 4, !tbaa !9
  %16 = load i32, ptr %5, align 4, !tbaa !9
  %17 = icmp slt i32 %15, %16
  br i1 %17, label %19, label %18

18:                                               ; preds = %14
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #2
  br label %70

19:                                               ; preds = %14
  %20 = load ptr, ptr %4, align 8, !tbaa !5
  %21 = load i32, ptr %12, align 4, !tbaa !9
  %22 = sext i32 %21 to i64
  %23 = getelementptr inbounds i32, ptr %20, i64 %22
  %24 = load i32, ptr %23, align 4, !tbaa !9
  %25 = load i32, ptr %6, align 4, !tbaa !9
  %26 = add nsw i32 %25, %24
  store i32 %26, ptr %6, align 4, !tbaa !9
  %27 = load ptr, ptr %4, align 8, !tbaa !5
  %28 = load i32, ptr %12, align 4, !tbaa !9
  %29 = sext i32 %28 to i64
  %30 = getelementptr inbounds i32, ptr %27, i64 %29
  %31 = load i32, ptr %30, align 4, !tbaa !9
  %32 = load i32, ptr %9, align 4, !tbaa !9
  %33 = load ptr, ptr %4, align 8, !tbaa !5
  %34 = load i32, ptr %12, align 4, !tbaa !9
  %35 = sext i32 %34 to i64
  %36 = getelementptr inbounds i32, ptr %33, i64 %35
  %37 = load i32, ptr %36, align 4, !tbaa !9
  %38 = add nsw i32 %32, %37
  %39 = call i32 @max(i32 noundef %31, i32 noundef %38)
  store i32 %39, ptr %9, align 4, !tbaa !9
  %40 = load i32, ptr %7, align 4, !tbaa !9
  %41 = load i32, ptr %9, align 4, !tbaa !9
  %42 = call i32 @max(i32 noundef %40, i32 noundef %41)
  store i32 %42, ptr %7, align 4, !tbaa !9
  %43 = load ptr, ptr %4, align 8, !tbaa !5
  %44 = load i32, ptr %12, align 4, !tbaa !9
  %45 = sext i32 %44 to i64
  %46 = getelementptr inbounds i32, ptr %43, i64 %45
  %47 = load i32, ptr %46, align 4, !tbaa !9
  %48 = load i32, ptr %10, align 4, !tbaa !9
  %49 = load ptr, ptr %4, align 8, !tbaa !5
  %50 = load i32, ptr %12, align 4, !tbaa !9
  %51 = sext i32 %50 to i64
  %52 = getelementptr inbounds i32, ptr %49, i64 %51
  %53 = load i32, ptr %52, align 4, !tbaa !9
  %54 = add nsw i32 %48, %53
  %55 = call i32 @min(i32 noundef %47, i32 noundef %54)
  store i32 %55, ptr %10, align 4, !tbaa !9
  %56 = load i32, ptr %8, align 4, !tbaa !9
  %57 = load i32, ptr %10, align 4, !tbaa !9
  %58 = call i32 @min(i32 noundef %56, i32 noundef %57)
  store i32 %58, ptr %8, align 4, !tbaa !9
  %59 = load ptr, ptr %4, align 8, !tbaa !5
  %60 = load i32, ptr %12, align 4, !tbaa !9
  %61 = sext i32 %60 to i64
  %62 = getelementptr inbounds i32, ptr %59, i64 %61
  %63 = load i32, ptr %62, align 4, !tbaa !9
  %64 = icmp sgt i32 %63, 0
  br i1 %64, label %65, label %66

65:                                               ; preds = %19
  store i32 0, ptr %11, align 4, !tbaa !9
  br label %66

66:                                               ; preds = %65, %19
  br label %67

67:                                               ; preds = %66
  %68 = load i32, ptr %12, align 4, !tbaa !9
  %69 = add nsw i32 %68, 1
  store i32 %69, ptr %12, align 4, !tbaa !9
  br label %14, !llvm.loop !11

70:                                               ; preds = %18
  %71 = load i32, ptr %11, align 4, !tbaa !9
  %72 = icmp ne i32 %71, 0
  br i1 %72, label %73, label %75

73:                                               ; preds = %70
  %74 = load i32, ptr %7, align 4, !tbaa !9
  store i32 %74, ptr %3, align 4
  store i32 1, ptr %13, align 4
  br label %81

75:                                               ; preds = %70
  %76 = load i32, ptr %7, align 4, !tbaa !9
  %77 = load i32, ptr %6, align 4, !tbaa !9
  %78 = load i32, ptr %8, align 4, !tbaa !9
  %79 = sub nsw i32 %77, %78
  %80 = call i32 @max(i32 noundef %76, i32 noundef %79)
  store i32 %80, ptr %3, align 4
  store i32 1, ptr %13, align 4
  br label %81

81:                                               ; preds = %75, %73
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #2
  %82 = load i32, ptr %3, align 4
  ret i32 %82
}

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

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

attributes #0 = { 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 #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"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"

; Function Attrs: nounwind uwtable
declare dso_local i32 @max(i32 noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
declare dso_local i32 @min(i32 noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local i32 @circularSubarraySum(ptr nocapture noundef readonly %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = icmp sgt i32 %1, 0
  br i1 %3, label %.lr.ph.preheader, label %._crit_edge.thread

.lr.ph.preheader:                                 ; preds = %2
  %wide.trip.count = zext nneg i32 %1 to i64
  br label %.lr.ph

._crit_edge:                                      ; preds = %.lr.ph
  %4 = icmp eq i32 %spec.select, 0
  br i1 %4, label %17, label %._crit_edge.thread

.lr.ph:                                           ; preds = %.lr.ph.preheader, %.lr.ph
  %indvars.iv = phi i64 [ 0, %.lr.ph.preheader ], [ %indvars.iv.next, %.lr.ph ]
  %.02739 = phi i32 [ 1, %.lr.ph.preheader ], [ %spec.select, %.lr.ph ]
  %.02838 = phi i32 [ 0, %.lr.ph.preheader ], [ %13, %.lr.ph ]
  %.02937 = phi i32 [ 0, %.lr.ph.preheader ], [ %9, %.lr.ph ]
  %.03036 = phi i32 [ 2147483647, %.lr.ph.preheader ], [ %14, %.lr.ph ]
  %.03135 = phi i32 [ -2147483648, %.lr.ph.preheader ], [ %10, %.lr.ph ]
  %.03234 = phi i32 [ 0, %.lr.ph.preheader ], [ %7, %.lr.ph ]
  %5 = getelementptr inbounds i32, ptr %0, i64 %indvars.iv
  %6 = load i32, ptr %5, align 4, !tbaa !5
  %7 = add nsw i32 %6, %.03234
  %8 = add nsw i32 %6, %.02937
  %9 = tail call i32 @max(i32 noundef %6, i32 noundef %8)
  %10 = tail call i32 @max(i32 noundef %.03135, i32 noundef %9)
  %11 = load i32, ptr %5, align 4, !tbaa !5
  %12 = add nsw i32 %11, %.02838
  %13 = tail call i32 @min(i32 noundef %11, i32 noundef %12)
  %14 = tail call i32 @min(i32 noundef %.03036, i32 noundef %13)
  %15 = load i32, ptr %5, align 4, !tbaa !5
  %16 = icmp sgt i32 %15, 0
  %spec.select = select i1 %16, i32 0, i32 %.02739
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next, %wide.trip.count
  br i1 %exitcond.not, label %._crit_edge, label %.lr.ph, !llvm.loop !9

17:                                               ; preds = %._crit_edge
  %18 = sub nsw i32 %7, %14
  %19 = tail call i32 @max(i32 noundef %10, i32 noundef %18)
  br label %._crit_edge.thread

._crit_edge.thread:                               ; preds = %2, %._crit_edge, %17
  %.033 = phi i32 [ %19, %17 ], [ %10, %._crit_edge ], [ -2147483648, %2 ]
  ret i32 %.033
}

attributes #0 = { 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, !6, i64 0}
!6 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


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