; LLVM IR from mianzhi/fosolvers :: src/libfosolvers/otGrid (otree)

; 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"

%struct.node = type { ptr, [8 x ptr], i32 }

@.str.2 = external hidden unnamed_addr constant [28 x i8], align 1

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

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

; Function Attrs: nounwind uwtable
declare dso_local void @split(ptr noundef) #1

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

; Function Attrs: nounwind uwtable
define dso_local void @grow(ptr noundef %0, i32 noundef %1) #1 {
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  store i32 %1, ptr %4, align 4, !tbaa !9
  %6 = load i32, ptr %4, align 4, !tbaa !9
  %7 = icmp sgt i32 %6, 0
  br i1 %7, label %8, label %31

8:                                                ; preds = %2
  %9 = load ptr, ptr %3, align 8, !tbaa !5
  call void @split(ptr noundef %9)
  %10 = load i32, ptr %4, align 4, !tbaa !9
  %11 = icmp sgt i32 %10, 1
  br i1 %11, label %12, label %30

12:                                               ; preds = %8
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #3
  store i32 0, ptr %5, align 4, !tbaa !9
  br label %13

13:                                               ; preds = %26, %12
  %14 = load i32, ptr %5, align 4, !tbaa !9
  %15 = icmp slt i32 %14, 8
  br i1 %15, label %17, label %16

16:                                               ; preds = %13
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #3
  br label %29

17:                                               ; preds = %13
  %18 = load ptr, ptr %3, align 8, !tbaa !5
  %19 = getelementptr inbounds %struct.node, ptr %18, i32 0, i32 1
  %20 = load i32, ptr %5, align 4, !tbaa !9
  %21 = sext i32 %20 to i64
  %22 = getelementptr inbounds [8 x ptr], ptr %19, i64 0, i64 %21
  %23 = load ptr, ptr %22, align 8, !tbaa !5
  %24 = load i32, ptr %4, align 4, !tbaa !9
  %25 = sub nsw i32 %24, 1
  call void @grow(ptr noundef %23, i32 noundef %25)
  br label %26

26:                                               ; preds = %17
  %27 = load i32, ptr %5, align 4, !tbaa !9
  %28 = add nsw i32 %27, 1
  store i32 %28, ptr %5, align 4, !tbaa !9
  br label %13, !llvm.loop !11

29:                                               ; preds = %16
  br label %30

30:                                               ; preds = %29, %8
  br label %34

31:                                               ; preds = %2
  %32 = load i32, ptr %4, align 4, !tbaa !9
  %33 = call i32 (ptr, ...) @printf(ptr noundef @.str.2, i32 noundef %32)
  br label %34

34:                                               ; preds = %31, %30
  ret void
}

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

@.str.2 = external hidden unnamed_addr constant [28 x i8], align 1

; Function Attrs: nounwind uwtable
declare dso_local void @split(ptr noundef) local_unnamed_addr #0

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

; Function Attrs: nounwind uwtable
define dso_local void @grow(ptr noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  br label %tailrecurse

tailrecurse:                                      ; preds = %.preheader, %2
  %.tr = phi ptr [ %0, %2 ], [ %21, %.preheader ]
  %.tr11 = phi i32 [ %1, %2 ], [ %6, %.preheader ]
  %3 = icmp sgt i32 %.tr11, 0
  br i1 %3, label %4, label %22

4:                                                ; preds = %tailrecurse
  tail call void @split(ptr noundef %.tr)
  %.not = icmp eq i32 %.tr11, 1
  br i1 %.not, label %.loopexit, label %.preheader

.preheader:                                       ; preds = %4
  %5 = getelementptr inbounds i8, ptr %.tr, i64 8
  %6 = add nsw i32 %.tr11, -1
  %7 = load ptr, ptr %5, align 8, !tbaa !5
  tail call void @grow(ptr noundef %7, i32 noundef %6)
  %8 = getelementptr inbounds i8, ptr %.tr, i64 16
  %9 = load ptr, ptr %8, align 8, !tbaa !5
  tail call void @grow(ptr noundef %9, i32 noundef %6)
  %10 = getelementptr inbounds i8, ptr %.tr, i64 24
  %11 = load ptr, ptr %10, align 8, !tbaa !5
  tail call void @grow(ptr noundef %11, i32 noundef %6)
  %12 = getelementptr inbounds i8, ptr %.tr, i64 32
  %13 = load ptr, ptr %12, align 8, !tbaa !5
  tail call void @grow(ptr noundef %13, i32 noundef %6)
  %14 = getelementptr inbounds i8, ptr %.tr, i64 40
  %15 = load ptr, ptr %14, align 8, !tbaa !5
  tail call void @grow(ptr noundef %15, i32 noundef %6)
  %16 = getelementptr inbounds i8, ptr %.tr, i64 48
  %17 = load ptr, ptr %16, align 8, !tbaa !5
  tail call void @grow(ptr noundef %17, i32 noundef %6)
  %18 = getelementptr inbounds i8, ptr %.tr, i64 56
  %19 = load ptr, ptr %18, align 8, !tbaa !5
  tail call void @grow(ptr noundef %19, i32 noundef %6)
  %20 = getelementptr inbounds i8, ptr %.tr, i64 64
  %21 = load ptr, ptr %20, align 8, !tbaa !5
  br label %tailrecurse

22:                                               ; preds = %tailrecurse
  %23 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2, i32 noundef %.tr11)
  br label %.loopexit

.loopexit:                                        ; preds = %4, %22
  ret void
}

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 = { 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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}


; Effective O3 passes: GVNPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,LICMPass,LoopRotatePass,LoopSimplifyPass,SROAPass,SimplifyCFGPass,TailCallElimPass