; LLVM IR from erthink/libmdbx :: src (txl)

; 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: 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: hot nounwind uwtable
define dso_local zeroext i1 @txl_contain(ptr noundef %0, i64 noundef %1) #1 {
  %3 = alloca i1, align 1
  %4 = alloca ptr, align 8
  %5 = alloca i64, align 8
  %6 = alloca i64, align 8
  %7 = alloca i64, align 8
  %8 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i64 %1, ptr %5, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #2
  %9 = load ptr, ptr %4, align 8, !tbaa !5
  %10 = getelementptr inbounds i64, ptr %9, i64 0
  %11 = load i64, ptr %10, align 8, !tbaa !9
  store i64 %11, ptr %6, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #2
  store i64 1, ptr %7, align 8, !tbaa !9
  br label %12

12:                                               ; preds = %26, %2
  %13 = load i64, ptr %7, align 8, !tbaa !9
  %14 = load i64, ptr %6, align 8, !tbaa !9
  %15 = icmp ule i64 %13, %14
  br i1 %15, label %17, label %16

16:                                               ; preds = %12
  store i32 2, ptr %8, align 4
  br label %29

17:                                               ; preds = %12
  %18 = load ptr, ptr %4, align 8, !tbaa !5
  %19 = load i64, ptr %7, align 8, !tbaa !9
  %20 = getelementptr inbounds i64, ptr %18, i64 %19
  %21 = load i64, ptr %20, align 8, !tbaa !9
  %22 = load i64, ptr %5, align 8, !tbaa !9
  %23 = icmp eq i64 %21, %22
  br i1 %23, label %24, label %25

24:                                               ; preds = %17
  store i1 true, ptr %3, align 1
  store i32 1, ptr %8, align 4
  br label %29

25:                                               ; preds = %17
  br label %26

26:                                               ; preds = %25
  %27 = load i64, ptr %7, align 8, !tbaa !9
  %28 = add i64 %27, 1
  store i64 %28, ptr %7, align 8, !tbaa !9
  br label %12, !llvm.loop !11

29:                                               ; preds = %24, %16
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #2
  %30 = load i32, ptr %8, align 4
  switch i32 %30, label %32 [
    i32 2, label %31
  ]

31:                                               ; preds = %29
  store i1 false, ptr %3, align 1
  store i32 1, ptr %8, align 4
  br label %32

32:                                               ; preds = %31, %29
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #2
  %33 = load i1, ptr %3, align 1
  ret i1 %33
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { hot 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 = { 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 = !{!"long", !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: hot nofree norecurse nosync nounwind memory(argmem: read) uwtable
define dso_local noundef zeroext i1 @txl_contain(ptr nocapture noundef readonly %0, i64 noundef %1) local_unnamed_addr #0 {
  %3 = load i64, ptr %0, align 8, !tbaa !5
  %.not10.not = icmp eq i64 %3, 0
  br i1 %.not10.not, label %.critedge, label %.lr.ph

.lr.ph:                                           ; preds = %2, %.lr.ph
  %.0811 = phi i64 [ %7, %.lr.ph ], [ 1, %2 ]
  %4 = getelementptr inbounds i64, ptr %0, i64 %.0811
  %5 = load i64, ptr %4, align 8, !tbaa !5
  %6 = icmp eq i64 %5, %1
  %7 = add i64 %.0811, 1
  %.not.not = icmp ugt i64 %7, %3
  %or.cond = or i1 %6, %.not.not
  br i1 %or.cond, label %.critedge, label %.lr.ph, !llvm.loop !9

.critedge:                                        ; preds = %.lr.ph, %2
  %.not.lcssa = phi i1 [ false, %2 ], [ %6, %.lr.ph ]
  ret i1 %.not.lcssa
}

attributes #0 = { hot 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 = !{!"long", !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: CorrelatedValuePropagationPass,EarlyCSEPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass