; LLVM IR from Muhammad-Magdi/problem-solving :: LIS.ll (Z6getMaxiiiii)

; 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"

@st = external dso_local global [4000 x i32], align 16

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; 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)) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress uwtable
define dso_local noundef i32 @_Z6getMaxiiiii(i32 noundef %0, i32 noundef %1, i32 noundef %2, i32 noundef %3, i32 noundef %4) #2 {
  %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 i32 %0, ptr %7, align 4, !tbaa !5
  store i32 %1, ptr %8, align 4, !tbaa !5
  store i32 %2, ptr %9, align 4, !tbaa !5
  store i32 %3, ptr %10, align 4, !tbaa !5
  store i32 %4, ptr %11, align 4, !tbaa !5
  %14 = load i32, ptr %8, align 4, !tbaa !5
  %15 = load i32, ptr %9, align 4, !tbaa !5
  %16 = icmp sgt i32 %14, %15
  br i1 %16, label %25, label %17

17:                                               ; preds = %5
  %18 = load i32, ptr %8, align 4, !tbaa !5
  %19 = load i32, ptr %11, align 4, !tbaa !5
  %20 = icmp sgt i32 %18, %19
  br i1 %20, label %25, label %21

21:                                               ; preds = %17
  %22 = load i32, ptr %9, align 4, !tbaa !5
  %23 = load i32, ptr %10, align 4, !tbaa !5
  %24 = icmp slt i32 %22, %23
  br i1 %24, label %25, label %26

25:                                               ; preds = %21, %17, %5
  store i32 0, ptr %6, align 4
  br label %64

26:                                               ; preds = %21
  %27 = load i32, ptr %8, align 4, !tbaa !5
  %28 = load i32, ptr %10, align 4, !tbaa !5
  %29 = icmp sge i32 %27, %28
  br i1 %29, label %30, label %39

30:                                               ; preds = %26
  %31 = load i32, ptr %9, align 4, !tbaa !5
  %32 = load i32, ptr %11, align 4, !tbaa !5
  %33 = icmp sle i32 %31, %32
  br i1 %33, label %34, label %39

34:                                               ; preds = %30
  %35 = load i32, ptr %7, align 4, !tbaa !5
  %36 = sext i32 %35 to i64
  %37 = getelementptr inbounds [4000 x i32], ptr @st, i64 0, i64 %36
  %38 = load i32, ptr %37, align 4, !tbaa !5
  store i32 %38, ptr %6, align 4
  br label %64

39:                                               ; preds = %30, %26
  call void @llvm.lifetime.start.p0(i64 4, ptr %12) #3
  %40 = load i32, ptr %7, align 4, !tbaa !5
  %41 = shl i32 %40, 1
  %42 = load i32, ptr %8, align 4, !tbaa !5
  %43 = load i32, ptr %8, align 4, !tbaa !5
  %44 = load i32, ptr %9, align 4, !tbaa !5
  %45 = add nsw i32 %43, %44
  %46 = ashr i32 %45, 1
  %47 = load i32, ptr %10, align 4, !tbaa !5
  %48 = load i32, ptr %11, align 4, !tbaa !5
  %49 = call noundef i32 @_Z6getMaxiiiii(i32 noundef %41, i32 noundef %42, i32 noundef %46, i32 noundef %47, i32 noundef %48)
  store i32 %49, ptr %12, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %13) #3
  %50 = load i32, ptr %7, align 4, !tbaa !5
  %51 = shl i32 %50, 1
  %52 = or i32 %51, 1
  %53 = load i32, ptr %8, align 4, !tbaa !5
  %54 = load i32, ptr %9, align 4, !tbaa !5
  %55 = add nsw i32 %53, %54
  %56 = ashr i32 %55, 1
  %57 = add nsw i32 %56, 1
  %58 = load i32, ptr %9, align 4, !tbaa !5
  %59 = load i32, ptr %10, align 4, !tbaa !5
  %60 = load i32, ptr %11, align 4, !tbaa !5
  %61 = call noundef i32 @_Z6getMaxiiiii(i32 noundef %52, i32 noundef %57, i32 noundef %58, i32 noundef %59, i32 noundef %60)
  store i32 %61, ptr %13, align 4, !tbaa !5
  %62 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) %12, ptr noundef nonnull align 4 dereferenceable(4) %13)
  %63 = load i32, ptr %62, align 4, !tbaa !5
  store i32 %63, ptr %6, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %13) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #3
  br label %64

64:                                               ; preds = %39, %34, %25
  %65 = load i32, ptr %6, align 4
  ret i32 %65
}

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


; 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"

@st = external dso_local local_unnamed_addr global [4000 x i32], align 16

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; 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 #1

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef i32 @_Z6getMaxiiiii(i32 noundef %0, i32 noundef %1, i32 noundef %2, i32 noundef %3, i32 noundef %4) local_unnamed_addr #2 {
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = icmp sgt i32 %1, %2
  %9 = icmp sgt i32 %1, %4
  %or.cond = or i1 %8, %9
  %10 = icmp slt i32 %2, %3
  %or.cond29 = or i1 %10, %or.cond
  br i1 %or.cond29, label %common.ret31, label %11

11:                                               ; preds = %5
  %.not = icmp slt i32 %1, %3
  %.not28 = icmp sgt i32 %2, %4
  %or.cond30 = or i1 %.not, %.not28
  br i1 %or.cond30, label %16, label %12

12:                                               ; preds = %11
  %13 = sext i32 %0 to i64
  %14 = getelementptr inbounds [4000 x i32], ptr @st, i64 0, i64 %13
  %15 = load i32, ptr %14, align 4, !tbaa !5
  br label %common.ret31

common.ret31:                                     ; preds = %5, %12, %16
  %common.ret31.op = phi i32 [ %25, %16 ], [ %15, %12 ], [ 0, %5 ]
  ret i32 %common.ret31.op

16:                                               ; preds = %11
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %6) #3
  %17 = shl i32 %0, 1
  %18 = add nsw i32 %2, %1
  %19 = ashr i32 %18, 1
  %20 = tail call noundef i32 @_Z6getMaxiiiii(i32 noundef %17, i32 noundef %1, i32 noundef %19, i32 noundef %3, i32 noundef %4)
  store i32 %20, ptr %6, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %7) #3
  %21 = or disjoint i32 %17, 1
  %22 = add nsw i32 %19, 1
  %23 = tail call noundef i32 @_Z6getMaxiiiii(i32 noundef %21, i32 noundef %22, i32 noundef %2, i32 noundef %3, i32 noundef %4)
  store i32 %23, ptr %7, align 4, !tbaa !5
  %24 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) %6, ptr noundef nonnull align 4 dereferenceable(4) %7)
  %25 = load i32, ptr %24, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %7) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %6) #3
  br label %common.ret31
}

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


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass