; LLVM IR from MaJerle/lwpkt :: libs/lwrb/src/lwrb (lwrb)

; 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.lwrb = type { ptr, i64, i64, i64, ptr }

; Function Attrs: nounwind uwtable
define dso_local zeroext i8 @lwrb_init(ptr noundef %0, ptr noundef %1, i64 noundef %2) #0 {
  %4 = alloca i8, align 1
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i64, align 8
  store ptr %0, ptr %5, align 8, !tbaa !5
  store ptr %1, ptr %6, align 8, !tbaa !5
  store i64 %2, ptr %7, align 8, !tbaa !9
  %8 = load ptr, ptr %5, align 8, !tbaa !5
  %9 = icmp eq ptr %8, null
  br i1 %9, label %16, label %10

10:                                               ; preds = %3
  %11 = load ptr, ptr %6, align 8, !tbaa !5
  %12 = icmp eq ptr %11, null
  br i1 %12, label %16, label %13

13:                                               ; preds = %10
  %14 = load i64, ptr %7, align 8, !tbaa !9
  %15 = icmp eq i64 %14, 0
  br i1 %15, label %16, label %17

16:                                               ; preds = %13, %10, %3
  store i8 0, ptr %4, align 1
  br label %30

17:                                               ; preds = %13
  %18 = load ptr, ptr %5, align 8, !tbaa !5
  %19 = getelementptr inbounds %struct.lwrb, ptr %18, i32 0, i32 4
  store ptr null, ptr %19, align 8, !tbaa !11
  %20 = load i64, ptr %7, align 8, !tbaa !9
  %21 = load ptr, ptr %5, align 8, !tbaa !5
  %22 = getelementptr inbounds %struct.lwrb, ptr %21, i32 0, i32 1
  store i64 %20, ptr %22, align 8, !tbaa !13
  %23 = load ptr, ptr %6, align 8, !tbaa !5
  %24 = load ptr, ptr %5, align 8, !tbaa !5
  %25 = getelementptr inbounds %struct.lwrb, ptr %24, i32 0, i32 0
  store ptr %23, ptr %25, align 8, !tbaa !14
  %26 = load ptr, ptr %5, align 8, !tbaa !5
  %27 = getelementptr inbounds %struct.lwrb, ptr %26, i32 0, i32 3
  store i64 0, ptr %27, align 8, !tbaa !15
  %28 = load ptr, ptr %5, align 8, !tbaa !5
  %29 = getelementptr inbounds %struct.lwrb, ptr %28, i32 0, i32 2
  store i64 0, ptr %29, align 8, !tbaa !15
  store i8 1, ptr %4, align 1
  br label %30

30:                                               ; preds = %17, %16
  %31 = load i8, ptr %4, align 1
  ret i8 %31
}

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"}
!9 = !{!10, !10, i64 0}
!10 = !{!"long", !7, i64 0}
!11 = !{!12, !6, i64 32}
!12 = !{!"lwrb", !6, i64 0, !10, i64 8, !7, i64 16, !7, i64 24, !6, i64 32}
!13 = !{!12, !10, i64 8}
!14 = !{!12, !6, i64 0}
!15 = !{!7, !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"

; Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: write) uwtable
define dso_local zeroext range(i8 0, 2) i8 @lwrb_init(ptr noundef writeonly %0, ptr noundef %1, i64 noundef %2) local_unnamed_addr #0 {
  %4 = icmp eq ptr %0, null
  %5 = icmp eq ptr %1, null
  %or.cond = or i1 %4, %5
  %6 = icmp eq i64 %2, 0
  %or.cond3 = or i1 %or.cond, %6
  br i1 %or.cond3, label %11, label %7

7:                                                ; preds = %3
  %8 = getelementptr inbounds i8, ptr %0, i64 32
  store ptr null, ptr %8, align 8, !tbaa !5
  %9 = getelementptr inbounds i8, ptr %0, i64 8
  store i64 %2, ptr %9, align 8, !tbaa !11
  store ptr %1, ptr %0, align 8, !tbaa !12
  %10 = getelementptr inbounds i8, ptr %0, i64 16
  tail call void @llvm.memset.p0.i64(ptr noundef nonnull align 8 dereferenceable(16) %10, i8 0, i64 16, i1 false)
  br label %11

11:                                               ; preds = %3, %7
  %.0 = phi i8 [ 1, %7 ], [ 0, %3 ]
  ret i8 %.0
}

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #1

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: write) 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 nounwind willreturn memory(argmem: write) }

!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 32}
!6 = !{!"lwrb", !7, i64 0, !10, i64 8, !8, i64 16, !8, i64 24, !7, i64 32}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"long", !8, i64 0}
!11 = !{!6, !10, i64 8}
!12 = !{!6, !7, i64 0}


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