; LLVM IR from HassenSaidi/IC_sqlite :: src (sqlite3)

; 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 }

@sqlite3_os_init.aVfs = external hidden global [4 x %struct.sqlite3_vfs], align 16
@unixBigLock = external hidden global ptr, 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
declare hidden ptr @sqlite3MutexAlloc(i32 noundef) #1

; Function Attrs: nounwind uwtable
declare dso_local i32 @sqlite3_vfs_register(ptr noundef, i32 noundef) #1

; Function Attrs: nounwind uwtable
define dso_local i32 @sqlite3_os_init() #1 {
  %1 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %1) #2
  store i32 0, ptr %1, align 4, !tbaa !5
  br label %2

2:                                                ; preds = %14, %0
  %3 = load i32, ptr %1, align 4, !tbaa !5
  %4 = zext i32 %3 to i64
  %5 = icmp ult i64 %4, 4
  br i1 %5, label %6, label %17

6:                                                ; preds = %2
  %7 = load i32, ptr %1, align 4, !tbaa !5
  %8 = zext i32 %7 to i64
  %9 = getelementptr inbounds [4 x %struct.sqlite3_vfs], ptr @sqlite3_os_init.aVfs, i64 0, i64 %8
  %10 = load i32, ptr %1, align 4, !tbaa !5
  %11 = icmp eq i32 %10, 0
  %12 = zext i1 %11 to i32
  %13 = call i32 @sqlite3_vfs_register(ptr noundef %9, i32 noundef %12)
  br label %14

14:                                               ; preds = %6
  %15 = load i32, ptr %1, align 4, !tbaa !5
  %16 = add i32 %15, 1
  store i32 %16, ptr %1, align 4, !tbaa !5
  br label %2, !llvm.loop !9

17:                                               ; preds = %2
  %18 = call ptr @sqlite3MutexAlloc(i32 noundef 11)
  store ptr %18, ptr @unixBigLock, align 8, !tbaa !11
  call void @llvm.lifetime.end.p0(i64 4, ptr %1) #2
  ret i32 0
}

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 = { 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/C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = !{!12, !12, i64 0}
!12 = !{!"any pointer", !7, i64 0}


; 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 }

@sqlite3_os_init.aVfs = external hidden global [4 x %struct.sqlite3_vfs], align 16
@unixBigLock = external hidden local_unnamed_addr global ptr, align 8

; Function Attrs: nounwind uwtable
declare hidden ptr @sqlite3MutexAlloc(i32 noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
declare dso_local i32 @sqlite3_vfs_register(ptr noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local noundef i32 @sqlite3_os_init() local_unnamed_addr #0 {
  %1 = tail call i32 @sqlite3_vfs_register(ptr noundef nonnull @sqlite3_os_init.aVfs, i32 noundef 1)
  %2 = tail call i32 @sqlite3_vfs_register(ptr noundef nonnull getelementptr inbounds (i8, ptr @sqlite3_os_init.aVfs, i64 168), i32 noundef 0)
  %3 = tail call i32 @sqlite3_vfs_register(ptr noundef nonnull getelementptr inbounds (i8, ptr @sqlite3_os_init.aVfs, i64 336), i32 noundef 0)
  %4 = tail call i32 @sqlite3_vfs_register(ptr noundef nonnull getelementptr inbounds (i8, ptr @sqlite3_os_init.aVfs, i64 504), i32 noundef 0)
  %5 = tail call ptr @sqlite3MutexAlloc(i32 noundef 11)
  store ptr %5, ptr @unixBigLock, align 8, !tbaa !5
  ret i32 0
}

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" }

!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"}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,LoopRotatePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass