; LLVM IR from JessonYue/LeetCodeLearning :: Array/zhanchengguo/0601 (main)

; 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"

@__const.main.nums = external hidden unnamed_addr constant [4 x i32], align 16
@.str = external hidden unnamed_addr constant [23 x i8], align 1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #0 {
  %1 = alloca i32, align 4
  %2 = alloca [4 x i32], align 16
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %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
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 16, ptr %2) #4
  call void @llvm.memcpy.p0.p0.i64(ptr align 16 %2, ptr align 16 @__const.main.nums, i64 16, i1 false)
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #4
  store i32 9, ptr %3, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #4
  store i32 4, ptr %6, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #4
  store i32 0, ptr %7, align 4, !tbaa !5
  br label %10

10:                                               ; preds = %43, %0
  %11 = load i32, ptr %7, align 4, !tbaa !5
  %12 = load i32, ptr %6, align 4, !tbaa !5
  %13 = icmp slt i32 %11, %12
  br i1 %13, label %15, label %14

14:                                               ; preds = %10
  store i32 2, ptr %8, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #4
  br label %46

15:                                               ; preds = %10
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #4
  %16 = load i32, ptr %7, align 4, !tbaa !5
  %17 = add nsw i32 %16, 1
  store i32 %17, ptr %9, align 4, !tbaa !5
  br label %18

18:                                               ; preds = %39, %15
  %19 = load i32, ptr %9, align 4, !tbaa !5
  %20 = load i32, ptr %6, align 4, !tbaa !5
  %21 = icmp slt i32 %19, %20
  br i1 %21, label %23, label %22

22:                                               ; preds = %18
  store i32 5, ptr %8, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #4
  br label %42

23:                                               ; preds = %18
  %24 = load i32, ptr %7, align 4, !tbaa !5
  %25 = sext i32 %24 to i64
  %26 = getelementptr inbounds [4 x i32], ptr %2, i64 0, i64 %25
  %27 = load i32, ptr %26, align 4, !tbaa !5
  %28 = load i32, ptr %9, align 4, !tbaa !5
  %29 = sext i32 %28 to i64
  %30 = getelementptr inbounds [4 x i32], ptr %2, i64 0, i64 %29
  %31 = load i32, ptr %30, align 4, !tbaa !5
  %32 = add nsw i32 %27, %31
  %33 = load i32, ptr %3, align 4, !tbaa !5
  %34 = icmp eq i32 %32, %33
  br i1 %34, label %35, label %38

35:                                               ; preds = %23
  %36 = load i32, ptr %7, align 4, !tbaa !5
  store i32 %36, ptr %4, align 4, !tbaa !5
  %37 = load i32, ptr %9, align 4, !tbaa !5
  store i32 %37, ptr %5, align 4, !tbaa !5
  br label %38

38:                                               ; preds = %35, %23
  br label %39

39:                                               ; preds = %38
  %40 = load i32, ptr %9, align 4, !tbaa !5
  %41 = add nsw i32 %40, 1
  store i32 %41, ptr %9, align 4, !tbaa !5
  br label %18, !llvm.loop !9

42:                                               ; preds = %22
  br label %43

43:                                               ; preds = %42
  %44 = load i32, ptr %7, align 4, !tbaa !5
  %45 = add nsw i32 %44, 1
  store i32 %45, ptr %7, align 4, !tbaa !5
  br label %10, !llvm.loop !11

46:                                               ; preds = %14
  %47 = load i32, ptr %4, align 4, !tbaa !5
  %48 = load i32, ptr %5, align 4, !tbaa !5
  %49 = call i32 (ptr, ...) @printf(ptr noundef @.str, i32 noundef %47, i32 noundef %48)
  store i32 0, ptr %1, align 4
  store i32 1, ptr %8, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #4
  call void @llvm.lifetime.end.p0(i64 16, ptr %2) #4
  %50 = load i32, ptr %1, align 4
  ret i32 %50
}

; 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 nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #2

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

declare i32 @printf(ptr noundef, ...) #3

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

@__const.main.nums = external hidden unnamed_addr constant [4 x i32], align 16
@.str = external hidden unnamed_addr constant [23 x i8], align 1

; Function Attrs: mustprogress nofree norecurse nounwind uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 {
.loopexit.3:
  %0 = load i32, ptr @__const.main.nums, align 16, !tbaa !5
  %1 = load i32, ptr getelementptr inbounds (i8, ptr @__const.main.nums, i64 8), align 8, !tbaa !5
  %2 = load i32, ptr getelementptr inbounds (i8, ptr @__const.main.nums, i64 12), align 4, !tbaa !5
  %3 = load i32, ptr getelementptr inbounds (i8, ptr @__const.main.nums, i64 4), align 4, !tbaa !5
  %4 = add nsw i32 %2, %1
  %5 = icmp eq i32 %4, 9
  %6 = add nsw i32 %1, %3
  %7 = icmp eq i32 %6, 9
  %8 = add nsw i32 %2, %0
  %9 = icmp eq i32 %8, 9
  %10 = add nsw i32 %1, %0
  %11 = icmp eq i32 %10, 9
  %spec.select20.136 = select i1 %11, i32 2, i32 1
  %spec.select20.238 = select i1 %9, i32 3, i32 %spec.select20.136
  %spec.select20.1 = select i1 %7, i32 2, i32 %spec.select20.238
  %12 = add nsw i32 %2, %3
  %13 = icmp eq i32 %12, 9
  %14 = select i1 %5, i1 true, i1 %13
  %spec.select20.2 = select i1 %14, i32 3, i32 %spec.select20.1
  %narrow = select i1 %13, i1 true, i1 %7
  %spec.select.1.1 = zext i1 %narrow to i32
  %spec.select.2 = select i1 %5, i32 2, i32 %spec.select.1.1
  %15 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str, i32 noundef %spec.select.2, i32 noundef %spec.select20.2)
  ret i32 0
}

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #1

attributes #0 = { mustprogress nofree norecurse 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 = { 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" }

!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,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferAlignmentPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyPass,PostOrderFunctionAttrsPass,ReassociatePass,SCCPPass,SROAPass,SimplifyCFGPass,TailCallElimPass