; LLVM IR from flomar/sqlmemdb :: sqlite (shell)

; 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.sqlite3_vfs = type { i32, i32, i32, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr }

@apnd_vfs = external hidden global %struct.sqlite3_vfs, align 8

; 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: nounwind uwtable
define dso_local i32 @sqlite3_appendvfs_init(ptr noundef %0, ptr noundef %1, ptr noundef %2) #1 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  %8 = alloca ptr, align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  store ptr %2, ptr %6, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #3
  store i32 0, ptr %7, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #3
  %9 = load ptr, ptr %6, align 8, !tbaa !5
  %10 = load ptr, ptr %5, align 8, !tbaa !5
  %11 = load ptr, ptr %4, align 8, !tbaa !5
  %12 = call ptr @sqlite3_vfs_find(ptr noundef null)
  store ptr %12, ptr %8, align 8, !tbaa !5
  %13 = load ptr, ptr %8, align 8, !tbaa !5
  %14 = getelementptr inbounds %struct.sqlite3_vfs, ptr %13, i32 0, i32 0
  %15 = load i32, ptr %14, align 8, !tbaa !11
  store i32 %15, ptr @apnd_vfs, align 8, !tbaa !11
  %16 = load ptr, ptr %8, align 8, !tbaa !5
  store ptr %16, ptr getelementptr inbounds (%struct.sqlite3_vfs, ptr @apnd_vfs, i32 0, i32 5), align 8, !tbaa !13
  %17 = load ptr, ptr %8, align 8, !tbaa !5
  %18 = getelementptr inbounds %struct.sqlite3_vfs, ptr %17, i32 0, i32 1
  %19 = load i32, ptr %18, align 4, !tbaa !14
  %20 = sext i32 %19 to i64
  %21 = add i64 %20, 24
  %22 = trunc i64 %21 to i32
  store i32 %22, ptr getelementptr inbounds (%struct.sqlite3_vfs, ptr @apnd_vfs, i32 0, i32 1), align 4, !tbaa !14
  %23 = call i32 @sqlite3_vfs_register(ptr noundef @apnd_vfs, i32 noundef 0)
  store i32 %23, ptr %7, align 4, !tbaa !9
  %24 = load i32, ptr %7, align 4, !tbaa !9
  %25 = icmp eq i32 %24, 0
  br i1 %25, label %26, label %27

26:                                               ; preds = %3
  store i32 256, ptr %7, align 4, !tbaa !9
  br label %27

27:                                               ; preds = %26, %3
  %28 = load i32, ptr %7, align 4, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #3
  ret i32 %28
}

declare ptr @sqlite3_vfs_find(ptr noundef) #2

declare i32 @sqlite3_vfs_register(ptr noundef, i32 noundef) #2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 = { "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 #3 = { 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 = !{!12, !10, i64 0}
!12 = !{!"sqlite3_vfs", !10, i64 0, !10, i64 4, !10, i64 8, !6, i64 16, !6, i64 24, !6, i64 32, !6, i64 40, !6, i64 48, !6, i64 56, !6, i64 64, !6, i64 72, !6, i64 80, !6, i64 88, !6, i64 96, !6, i64 104, !6, i64 112, !6, i64 120, !6, i64 128, !6, i64 136, !6, i64 144, !6, i64 152, !6, i64 160}
!13 = !{!12, !6, i64 32}
!14 = !{!12, !10, i64 4}


; 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"

%struct.sqlite3_vfs = type { i32, i32, i32, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr }

@apnd_vfs = external hidden global %struct.sqlite3_vfs, align 8

; Function Attrs: nounwind uwtable
define dso_local i32 @sqlite3_appendvfs_init(ptr nocapture noundef readnone %0, ptr nocapture noundef readnone %1, ptr nocapture noundef readnone %2) local_unnamed_addr #0 {
  %4 = tail call ptr @sqlite3_vfs_find(ptr noundef null) #2
  %5 = load i32, ptr %4, align 8, !tbaa !5
  store i32 %5, ptr @apnd_vfs, align 8, !tbaa !5
  store ptr %4, ptr getelementptr inbounds (i8, ptr @apnd_vfs, i64 32), align 8, !tbaa !11
  %6 = getelementptr inbounds i8, ptr %4, i64 4
  %7 = load i32, ptr %6, align 4, !tbaa !12
  %8 = add i32 %7, 24
  store i32 %8, ptr getelementptr inbounds (i8, ptr @apnd_vfs, i64 4), align 4, !tbaa !12
  %9 = tail call i32 @sqlite3_vfs_register(ptr noundef nonnull @apnd_vfs, i32 noundef 0) #2
  %10 = icmp eq i32 %9, 0
  %spec.store.select = select i1 %10, i32 256, i32 %9
  ret i32 %spec.store.select
}

declare ptr @sqlite3_vfs_find(ptr noundef) local_unnamed_addr #1

declare i32 @sqlite3_vfs_register(ptr noundef, i32 noundef) local_unnamed_addr #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 = { "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, !7, i64 0}
!6 = !{!"sqlite3_vfs", !7, i64 0, !7, i64 4, !7, i64 8, !10, i64 16, !10, i64 24, !10, i64 32, !10, i64 40, !10, i64 48, !10, i64 56, !10, i64 64, !10, i64 72, !10, i64 80, !10, i64 88, !10, i64 96, !10, i64 104, !10, i64 112, !10, i64 120, !10, i64 128, !10, i64 136, !10, i64 144, !10, i64 152, !10, i64 160}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!6, !10, i64 32}
!12 = !{!6, !7, i64 4}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass