; LLVM IR from Dev-XYS/Algorithms :: Persistent-Array.ll (Z5queryP4nodeiii)

; 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, ptr, i32, [4 x i8] }>

; 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: mustprogress uwtable
define dso_local noundef i32 @_Z5queryP4nodeiii(ptr noundef %0, i32 noundef %1, i32 noundef %2, i32 noundef %3) #1 {
  %5 = alloca i32, align 4
  %6 = alloca ptr, align 8
  %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
  store ptr %0, ptr %6, align 8, !tbaa !5
  store i32 %1, ptr %7, align 4, !tbaa !9
  store i32 %2, ptr %8, align 4, !tbaa !9
  store i32 %3, ptr %9, align 4, !tbaa !9
  %12 = load i32, ptr %7, align 4, !tbaa !9
  %13 = load i32, ptr %8, align 4, !tbaa !9
  %14 = icmp eq i32 %12, %13
  br i1 %14, label %15, label %19

15:                                               ; preds = %4
  %16 = load ptr, ptr %6, align 8, !tbaa !5
  %17 = getelementptr inbounds %struct.node, ptr %16, i32 0, i32 2
  %18 = load i32, ptr %17, align 8, !tbaa !11
  store i32 %18, ptr %5, align 4
  br label %45

19:                                               ; preds = %4
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #2
  %20 = load i32, ptr %7, align 4, !tbaa !9
  %21 = load i32, ptr %8, align 4, !tbaa !9
  %22 = add nsw i32 %20, %21
  %23 = ashr i32 %22, 1
  store i32 %23, ptr %10, align 4, !tbaa !9
  %24 = load i32, ptr %9, align 4, !tbaa !9
  %25 = load i32, ptr %10, align 4, !tbaa !9
  %26 = icmp sle i32 %24, %25
  br i1 %26, label %27, label %35

27:                                               ; preds = %19
  %28 = load ptr, ptr %6, align 8, !tbaa !5
  %29 = getelementptr inbounds %struct.node, ptr %28, i32 0, i32 0
  %30 = load ptr, ptr %29, align 8, !tbaa !13
  %31 = load i32, ptr %7, align 4, !tbaa !9
  %32 = load i32, ptr %10, align 4, !tbaa !9
  %33 = load i32, ptr %9, align 4, !tbaa !9
  %34 = call noundef i32 @_Z5queryP4nodeiii(ptr noundef %30, i32 noundef %31, i32 noundef %32, i32 noundef %33)
  store i32 %34, ptr %5, align 4
  store i32 1, ptr %11, align 4
  br label %44

35:                                               ; preds = %19
  %36 = load ptr, ptr %6, align 8, !tbaa !5
  %37 = getelementptr inbounds %struct.node, ptr %36, i32 0, i32 1
  %38 = load ptr, ptr %37, align 8, !tbaa !14
  %39 = load i32, ptr %10, align 4, !tbaa !9
  %40 = add nsw i32 %39, 1
  %41 = load i32, ptr %8, align 4, !tbaa !9
  %42 = load i32, ptr %9, align 4, !tbaa !9
  %43 = call noundef i32 @_Z5queryP4nodeiii(ptr noundef %38, i32 noundef %40, i32 noundef %41, i32 noundef %42)
  store i32 %43, ptr %5, align 4
  store i32 1, ptr %11, align 4
  br label %44

44:                                               ; preds = %35, %27
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #2
  br label %45

45:                                               ; preds = %44, %15
  %46 = load i32, ptr %5, align 4
  ret i32 %46
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #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++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !10, i64 16}
!12 = !{!"_ZTS4node", !6, i64 0, !6, i64 8, !10, i64 16}
!13 = !{!12, !6, i64 0}
!14 = !{!12, !6, i64 8}


; 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 norecurse nosync nounwind willreturn memory(read, inaccessiblemem: none) uwtable
define dso_local noundef i32 @_Z5queryP4nodeiii(ptr nocapture noundef readonly %0, i32 noundef %1, i32 noundef %2, i32 noundef %3) local_unnamed_addr #0 {
  %5 = icmp eq i32 %1, %2
  br i1 %5, label %tailrecurse.outer._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %4, %tailrecurse.outer
  %.tr22.ph31 = phi i32 [ %.tr2227, %tailrecurse.outer ], [ %2, %4 ]
  %.tr21.ph30 = phi i32 [ %15, %tailrecurse.outer ], [ %1, %4 ]
  %.tr.ph29 = phi ptr [ %14, %tailrecurse.outer ], [ %0, %4 ]
  br label %8

tailrecurse.outer._crit_edge:                     ; preds = %tailrecurse.outer, %tailrecurse, %4
  %.tr.lcssa = phi ptr [ %0, %4 ], [ %11, %tailrecurse ], [ %14, %tailrecurse.outer ]
  %6 = getelementptr inbounds i8, ptr %.tr.lcssa, i64 16
  %7 = load i32, ptr %6, align 8, !tbaa !5
  ret i32 %7

8:                                                ; preds = %.lr.ph, %tailrecurse
  %.tr2227 = phi i32 [ %.tr22.ph31, %.lr.ph ], [ %10, %tailrecurse ]
  %.tr26 = phi ptr [ %.tr.ph29, %.lr.ph ], [ %11, %tailrecurse ]
  %9 = add nsw i32 %.tr2227, %.tr21.ph30
  %10 = ashr i32 %9, 1
  %.not = icmp slt i32 %10, %3
  br i1 %.not, label %tailrecurse.outer, label %tailrecurse

tailrecurse:                                      ; preds = %8
  %11 = load ptr, ptr %.tr26, align 8, !tbaa !11
  %12 = icmp eq i32 %.tr21.ph30, %10
  br i1 %12, label %tailrecurse.outer._crit_edge, label %8

tailrecurse.outer:                                ; preds = %8
  %13 = getelementptr inbounds i8, ptr %.tr26, i64 8
  %14 = load ptr, ptr %13, align 8, !tbaa !12
  %15 = add nsw i32 %10, 1
  %16 = icmp eq i32 %15, %.tr2227
  br i1 %16, label %tailrecurse.outer._crit_edge, label %.lr.ph
}

attributes #0 = { mustprogress nofree norecurse 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 16}
!6 = !{!"_ZTS4node", !7, i64 0, !7, i64 8, !10, i64 16}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"int", !8, i64 0}
!11 = !{!6, !7, i64 0}
!12 = !{!6, !7, i64 8}


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