; LLVM IR from lzyrapx/Competitive-Programming :: HDUOJ/2711（线段树）（求区间第K大）.ll (Z5queryiii)

; 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"

@sum = external dso_local global [44444 x i32], align 16

; 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 @_Z5queryiii(i32 noundef %0, i32 noundef %1, i32 noundef %2) #1 {
  %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 %5, align 4, !tbaa !5
  store i32 %1, ptr %6, align 4, !tbaa !5
  store i32 %2, ptr %7, align 4, !tbaa !5
  %10 = load i32, ptr %5, align 4, !tbaa !5
  %11 = load i32, ptr %6, align 4, !tbaa !5
  %12 = icmp eq i32 %10, %11
  br i1 %12, label %13, label %15

13:                                               ; preds = %3
  %14 = load i32, ptr %5, align 4, !tbaa !5
  store i32 %14, ptr %4, align 4
  br label %42

15:                                               ; preds = %3
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #2
  %16 = load i32, ptr %5, align 4, !tbaa !5
  %17 = load i32, ptr %6, align 4, !tbaa !5
  %18 = add nsw i32 %16, %17
  %19 = ashr i32 %18, 1
  store i32 %19, ptr %8, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #2
  store i32 0, ptr %9, align 4, !tbaa !5
  %20 = load i32, ptr %7, align 4, !tbaa !5
  %21 = shl i32 %20, 1
  %22 = sext i32 %21 to i64
  %23 = getelementptr inbounds [44444 x i32], ptr @sum, i64 0, i64 %22
  %24 = load i32, ptr %23, align 4, !tbaa !5
  %25 = icmp eq i32 %24, 1
  br i1 %25, label %26, label %32

26:                                               ; preds = %15
  %27 = load i32, ptr %5, align 4, !tbaa !5
  %28 = load i32, ptr %8, align 4, !tbaa !5
  %29 = load i32, ptr %7, align 4, !tbaa !5
  %30 = shl i32 %29, 1
  %31 = call noundef i32 @_Z5queryiii(i32 noundef %27, i32 noundef %28, i32 noundef %30)
  store i32 %31, ptr %9, align 4, !tbaa !5
  br label %40

32:                                               ; preds = %15
  %33 = load i32, ptr %8, align 4, !tbaa !5
  %34 = add nsw i32 %33, 1
  %35 = load i32, ptr %6, align 4, !tbaa !5
  %36 = load i32, ptr %7, align 4, !tbaa !5
  %37 = shl i32 %36, 1
  %38 = or i32 %37, 1
  %39 = call noundef i32 @_Z5queryiii(i32 noundef %34, i32 noundef %35, i32 noundef %38)
  store i32 %39, ptr %9, align 4, !tbaa !5
  br label %40

40:                                               ; preds = %32, %26
  %41 = load i32, ptr %9, align 4, !tbaa !5
  store i32 %41, ptr %4, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #2
  br label %42

42:                                               ; preds = %40, %13
  %43 = load i32, ptr %4, align 4
  ret i32 %43
}

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


; 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"

@sum = external dso_local local_unnamed_addr global [44444 x i32], align 16

; Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(read, argmem: none, inaccessiblemem: none) uwtable
define dso_local noundef i32 @_Z5queryiii(i32 noundef %0, i32 noundef %1, i32 noundef %2) local_unnamed_addr #0 {
  br label %tailrecurse.outer

tailrecurse.outer:                                ; preds = %13, %3
  %.tr.ph = phi i32 [ %14, %13 ], [ %0, %3 ]
  %.tr17.ph = phi i32 [ %.tr17, %13 ], [ %1, %3 ]
  %.tr18.ph = phi i32 [ %15, %13 ], [ %2, %3 ]
  br label %tailrecurse

tailrecurse:                                      ; preds = %tailrecurse.outer, %5
  %.tr17 = phi i32 [ %7, %5 ], [ %.tr17.ph, %tailrecurse.outer ]
  %.tr18 = phi i32 [ %8, %5 ], [ %.tr18.ph, %tailrecurse.outer ]
  %4 = icmp eq i32 %.tr.ph, %.tr17
  br i1 %4, label %16, label %5

5:                                                ; preds = %tailrecurse
  %6 = add nsw i32 %.tr17, %.tr.ph
  %7 = ashr i32 %6, 1
  %8 = shl i32 %.tr18, 1
  %9 = sext i32 %8 to i64
  %10 = getelementptr inbounds [44444 x i32], ptr @sum, i64 0, i64 %9
  %11 = load i32, ptr %10, align 8, !tbaa !5
  %12 = icmp eq i32 %11, 1
  br i1 %12, label %tailrecurse, label %13

13:                                               ; preds = %5
  %14 = add nsw i32 %7, 1
  %15 = or disjoint i32 %8, 1
  br label %tailrecurse.outer

16:                                               ; preds = %tailrecurse
  ret i32 %.tr.ph
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(read, argmem: none, 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, !6, i64 0}
!6 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}


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