; LLVM IR from codemistic/Data-Structures-and-Algorithms :: Trees/pathSum.ll (Z10hasPathSumP8TreeNodei)

; 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.TreeNode = type { i32, ptr, ptr }

; Function Attrs: mustprogress uwtable
define dso_local noundef zeroext i1 @_Z10hasPathSumP8TreeNodei(ptr noundef %0, i32 noundef %1) #0 {
  %3 = alloca i1, align 1
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !9
  %6 = load ptr, ptr %4, align 8, !tbaa !5
  %7 = icmp ne ptr %6, null
  br i1 %7, label %9, label %8

8:                                                ; preds = %2
  store i1 false, ptr %3, align 1
  br label %48

9:                                                ; preds = %2
  %10 = load ptr, ptr %4, align 8, !tbaa !5
  %11 = getelementptr inbounds %struct.TreeNode, ptr %10, i32 0, i32 1
  %12 = load ptr, ptr %11, align 8, !tbaa !11
  %13 = icmp ne ptr %12, null
  br i1 %13, label %26, label %14

14:                                               ; preds = %9
  %15 = load ptr, ptr %4, align 8, !tbaa !5
  %16 = getelementptr inbounds %struct.TreeNode, ptr %15, i32 0, i32 2
  %17 = load ptr, ptr %16, align 8, !tbaa !13
  %18 = icmp ne ptr %17, null
  br i1 %18, label %26, label %19

19:                                               ; preds = %14
  %20 = load i32, ptr %5, align 4, !tbaa !9
  %21 = load ptr, ptr %4, align 8, !tbaa !5
  %22 = getelementptr inbounds %struct.TreeNode, ptr %21, i32 0, i32 0
  %23 = load i32, ptr %22, align 8, !tbaa !14
  %24 = sub nsw i32 %20, %23
  %25 = icmp eq i32 %24, 0
  store i1 %25, ptr %3, align 1
  br label %48

26:                                               ; preds = %14, %9
  %27 = load ptr, ptr %4, align 8, !tbaa !5
  %28 = getelementptr inbounds %struct.TreeNode, ptr %27, i32 0, i32 1
  %29 = load ptr, ptr %28, align 8, !tbaa !11
  %30 = load i32, ptr %5, align 4, !tbaa !9
  %31 = load ptr, ptr %4, align 8, !tbaa !5
  %32 = getelementptr inbounds %struct.TreeNode, ptr %31, i32 0, i32 0
  %33 = load i32, ptr %32, align 8, !tbaa !14
  %34 = sub nsw i32 %30, %33
  %35 = call noundef zeroext i1 @_Z10hasPathSumP8TreeNodei(ptr noundef %29, i32 noundef %34)
  br i1 %35, label %46, label %36

36:                                               ; preds = %26
  %37 = load ptr, ptr %4, align 8, !tbaa !5
  %38 = getelementptr inbounds %struct.TreeNode, ptr %37, i32 0, i32 2
  %39 = load ptr, ptr %38, align 8, !tbaa !13
  %40 = load i32, ptr %5, align 4, !tbaa !9
  %41 = load ptr, ptr %4, align 8, !tbaa !5
  %42 = getelementptr inbounds %struct.TreeNode, ptr %41, i32 0, i32 0
  %43 = load i32, ptr %42, align 8, !tbaa !14
  %44 = sub nsw i32 %40, %43
  %45 = call noundef zeroext i1 @_Z10hasPathSumP8TreeNodei(ptr noundef %39, i32 noundef %44)
  br label %46

46:                                               ; preds = %36, %26
  %47 = phi i1 [ true, %26 ], [ %45, %36 ]
  store i1 %47, ptr %3, align 1
  br label %48

48:                                               ; preds = %46, %19, %8
  %49 = load i1, ptr %3, align 1
  ret i1 %49
}

attributes #0 = { 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" }

!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++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !6, i64 8}
!12 = !{!"_ZTS8TreeNode", !10, i64 0, !6, i64 8, !6, i64 16}
!13 = !{!12, !6, i64 16}
!14 = !{!12, !10, i64 0}


; 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: mustprogress nofree nosync nounwind willreturn memory(read, inaccessiblemem: none) uwtable
define dso_local noundef zeroext i1 @_Z10hasPathSumP8TreeNodei(ptr noundef readonly %0, i32 noundef %1) local_unnamed_addr #0 {
  %.not17 = icmp eq ptr %0, null
  br i1 %.not17, label %.loopexit, label %.lr.ph

.lr.ph:                                           ; preds = %2, %tailrecurse
  %.tr1419 = phi i32 [ %13, %tailrecurse ], [ %1, %2 ]
  %.tr18 = phi ptr [ %16, %tailrecurse ], [ %0, %2 ]
  %3 = getelementptr inbounds i8, ptr %.tr18, i64 8
  %4 = load ptr, ptr %3, align 8, !tbaa !5
  %.not12 = icmp eq ptr %4, null
  br i1 %.not12, label %5, label %11

5:                                                ; preds = %.lr.ph
  %6 = getelementptr inbounds i8, ptr %.tr18, i64 16
  %7 = load ptr, ptr %6, align 8, !tbaa !11
  %.not13 = icmp eq ptr %7, null
  br i1 %.not13, label %8, label %11

8:                                                ; preds = %5
  %9 = load i32, ptr %.tr18, align 8, !tbaa !12
  %10 = icmp eq i32 %9, %.tr1419
  br label %.loopexit

11:                                               ; preds = %5, %.lr.ph
  %12 = load i32, ptr %.tr18, align 8, !tbaa !12
  %13 = sub nsw i32 %.tr1419, %12
  %14 = tail call noundef zeroext i1 @_Z10hasPathSumP8TreeNodei(ptr noundef %4, i32 noundef %13)
  br i1 %14, label %.loopexit, label %tailrecurse

tailrecurse:                                      ; preds = %11
  %15 = getelementptr inbounds i8, ptr %.tr18, i64 16
  %16 = load ptr, ptr %15, align 8, !tbaa !11
  %.not = icmp eq ptr %16, null
  br i1 %.not, label %.loopexit, label %.lr.ph

.loopexit:                                        ; preds = %tailrecurse, %11, %2, %8
  %.0 = phi i1 [ %10, %8 ], [ false, %2 ], [ %14, %11 ], [ %14, %tailrecurse ]
  ret i1 %.0
}

attributes #0 = { mustprogress nofree nosync nounwind willreturn memory(read, inaccessiblemem: none) 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, !10, i64 8}
!6 = !{!"_ZTS8TreeNode", !7, i64 0, !10, i64 8, !10, i64 16}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!6, !10, i64 16}
!12 = !{!6, !7, i64 0}


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