; LLVM IR from AlgoGenesis/C :: Binary Index Tree/SegmentTree/Query (query_segment_tree)

; 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"

; Function Attrs: nounwind uwtable
define dso_local i32 @query_segment_tree(ptr noundef %0, i32 noundef %1, i32 noundef %2, i32 noundef %3) #0 {
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  store ptr %0, ptr %5, align 8, !tbaa !5
  store i32 %1, ptr %6, align 4, !tbaa !9
  store i32 %2, ptr %7, align 4, !tbaa !9
  store i32 %3, ptr %8, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #2
  store i32 0, ptr %9, align 4, !tbaa !9
  %10 = load i32, ptr %6, align 4, !tbaa !9
  %11 = load i32, ptr %7, align 4, !tbaa !9
  %12 = add nsw i32 %11, %10
  store i32 %12, ptr %7, align 4, !tbaa !9
  %13 = load i32, ptr %6, align 4, !tbaa !9
  %14 = load i32, ptr %8, align 4, !tbaa !9
  %15 = add nsw i32 %14, %13
  store i32 %15, ptr %8, align 4, !tbaa !9
  br label %16

16:                                               ; preds = %48, %4
  %17 = load i32, ptr %7, align 4, !tbaa !9
  %18 = load i32, ptr %8, align 4, !tbaa !9
  %19 = icmp slt i32 %17, %18
  br i1 %19, label %20, label %53

20:                                               ; preds = %16
  %21 = load i32, ptr %7, align 4, !tbaa !9
  %22 = srem i32 %21, 2
  %23 = icmp eq i32 %22, 1
  br i1 %23, label %24, label %34

24:                                               ; preds = %20
  %25 = load ptr, ptr %5, align 8, !tbaa !5
  %26 = load i32, ptr %7, align 4, !tbaa !9
  %27 = sext i32 %26 to i64
  %28 = getelementptr inbounds i32, ptr %25, i64 %27
  %29 = load i32, ptr %28, align 4, !tbaa !9
  %30 = load i32, ptr %9, align 4, !tbaa !9
  %31 = add nsw i32 %30, %29
  store i32 %31, ptr %9, align 4, !tbaa !9
  %32 = load i32, ptr %7, align 4, !tbaa !9
  %33 = add nsw i32 %32, 1
  store i32 %33, ptr %7, align 4, !tbaa !9
  br label %34

34:                                               ; preds = %24, %20
  %35 = load i32, ptr %8, align 4, !tbaa !9
  %36 = srem i32 %35, 2
  %37 = icmp eq i32 %36, 1
  br i1 %37, label %38, label %48

38:                                               ; preds = %34
  %39 = load i32, ptr %8, align 4, !tbaa !9
  %40 = add nsw i32 %39, -1
  store i32 %40, ptr %8, align 4, !tbaa !9
  %41 = load ptr, ptr %5, align 8, !tbaa !5
  %42 = load i32, ptr %8, align 4, !tbaa !9
  %43 = sext i32 %42 to i64
  %44 = getelementptr inbounds i32, ptr %41, i64 %43
  %45 = load i32, ptr %44, align 4, !tbaa !9
  %46 = load i32, ptr %9, align 4, !tbaa !9
  %47 = add nsw i32 %46, %45
  store i32 %47, ptr %9, align 4, !tbaa !9
  br label %48

48:                                               ; preds = %38, %34
  %49 = load i32, ptr %7, align 4, !tbaa !9
  %50 = sdiv i32 %49, 2
  store i32 %50, ptr %7, align 4, !tbaa !9
  %51 = load i32, ptr %8, align 4, !tbaa !9
  %52 = sdiv i32 %51, 2
  store i32 %52, ptr %8, align 4, !tbaa !9
  br label %16, !llvm.loop !11

53:                                               ; preds = %16
  %54 = load i32, ptr %9, align 4, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #2
  ret i32 %54
}

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

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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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/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"

; Function Attrs: nofree norecurse nosync nounwind memory(argmem: read) uwtable
define dso_local i32 @query_segment_tree(ptr nocapture noundef readonly %0, i32 noundef %1, i32 noundef %2, i32 noundef %3) local_unnamed_addr #0 {
  %5 = icmp slt i32 %2, %3
  br i1 %5, label %.lr.ph.preheader, label %._crit_edge

.lr.ph.preheader:                                 ; preds = %4
  %6 = add nsw i32 %3, %1
  %7 = add nsw i32 %2, %1
  br label %.lr.ph

.lr.ph:                                           ; preds = %.lr.ph.preheader, %25
  %.024 = phi i32 [ %.2, %25 ], [ 0, %.lr.ph.preheader ]
  %.01823 = phi i32 [ %27, %25 ], [ %6, %.lr.ph.preheader ]
  %.02022 = phi i32 [ %26, %25 ], [ %7, %.lr.ph.preheader ]
  %8 = and i32 %.02022, -2147483647
  %9 = icmp eq i32 %8, 1
  br i1 %9, label %10, label %16

10:                                               ; preds = %.lr.ph
  %11 = zext nneg i32 %.02022 to i64
  %12 = getelementptr inbounds i32, ptr %0, i64 %11
  %13 = load i32, ptr %12, align 4, !tbaa !5
  %14 = add nsw i32 %13, %.024
  %15 = add nuw nsw i32 %.02022, 1
  br label %16

16:                                               ; preds = %10, %.lr.ph
  %.121 = phi i32 [ %15, %10 ], [ %.02022, %.lr.ph ]
  %.1 = phi i32 [ %14, %10 ], [ %.024, %.lr.ph ]
  %17 = and i32 %.01823, -2147483647
  %18 = icmp eq i32 %17, 1
  br i1 %18, label %19, label %25

19:                                               ; preds = %16
  %20 = add nsw i32 %.01823, -1
  %21 = zext nneg i32 %20 to i64
  %22 = getelementptr inbounds i32, ptr %0, i64 %21
  %23 = load i32, ptr %22, align 4, !tbaa !5
  %24 = add nsw i32 %23, %.1
  br label %25

25:                                               ; preds = %19, %16
  %.119 = phi i32 [ %20, %19 ], [ %.01823, %16 ]
  %.2 = phi i32 [ %24, %19 ], [ %.1, %16 ]
  %26 = sdiv i32 %.121, 2
  %27 = sdiv i32 %.119, 2
  %28 = icmp slt i32 %26, %27
  br i1 %28, label %.lr.ph, label %._crit_edge, !llvm.loop !9

._crit_edge:                                      ; preds = %25, %4
  %.0.lcssa = phi i32 [ 0, %4 ], [ %.2, %25 ]
  ret i32 %.0.lcssa
}

attributes #0 = { nofree norecurse nosync nounwind memory(argmem: read) 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


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