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

; 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.lwpkt = type { i32, [256 x i8], ptr, ptr, i32, ptr, i8, %struct.anon }
%struct.anon = type { i32, %struct.lwpkt_crc_t, i32, i32, i32, i32, i32, i64, i64 }
%struct.lwpkt_crc_t = type { i32 }

; Function Attrs: nounwind uwtable
define dso_local i32 @lwpkt_init(ptr noundef %0, ptr noundef %1, ptr noundef %2) #0 {
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  store ptr %0, ptr %5, align 8, !tbaa !5
  store ptr %1, ptr %6, align 8, !tbaa !5
  store ptr %2, ptr %7, align 8, !tbaa !5
  %8 = load ptr, ptr %5, align 8, !tbaa !5
  %9 = icmp eq ptr %8, null
  br i1 %9, label %10, label %11

10:                                               ; preds = %3
  store i32 1, ptr %4, align 4
  br label %32

11:                                               ; preds = %3
  %12 = load ptr, ptr %5, align 8, !tbaa !5
  call void @llvm.memset.p0.i64(ptr align 8 %12, i8 0, i64 352, i1 false)
  br label %13

13:                                               ; preds = %11
  %14 = load ptr, ptr %5, align 8, !tbaa !5
  %15 = getelementptr inbounds %struct.lwpkt, ptr %14, i32 0, i32 7
  call void @llvm.memset.p0.i64(ptr align 8 %15, i8 0, i64 48, i1 false)
  %16 = load ptr, ptr %5, align 8, !tbaa !5
  %17 = getelementptr inbounds %struct.lwpkt, ptr %16, i32 0, i32 7
  %18 = getelementptr inbounds %struct.anon, ptr %17, i32 0, i32 0
  store i32 0, ptr %18, align 8, !tbaa !9
  br label %19

19:                                               ; preds = %13
  %20 = load ptr, ptr %6, align 8, !tbaa !5
  %21 = load ptr, ptr %5, align 8, !tbaa !5
  %22 = getelementptr inbounds %struct.lwpkt, ptr %21, i32 0, i32 2
  store ptr %20, ptr %22, align 8, !tbaa !15
  %23 = load ptr, ptr %7, align 8, !tbaa !5
  %24 = load ptr, ptr %5, align 8, !tbaa !5
  %25 = getelementptr inbounds %struct.lwpkt, ptr %24, i32 0, i32 3
  store ptr %23, ptr %25, align 8, !tbaa !16
  %26 = load ptr, ptr %5, align 8, !tbaa !5
  %27 = getelementptr inbounds %struct.lwpkt, ptr %26, i32 0, i32 6
  %28 = load i8, ptr %27, align 8, !tbaa !17
  %29 = zext i8 %28 to i32
  %30 = or i32 %29, 255
  %31 = trunc i32 %30 to i8
  store i8 %31, ptr %27, align 8, !tbaa !17
  store i32 0, ptr %4, align 4
  br label %32

32:                                               ; preds = %19, %10
  %33 = load i32, ptr %4, align 4
  ret i32 %33
}

; 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 = { 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 = { 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, !6, i64 0}
!6 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !11, i64 304}
!10 = !{!"lwpkt", !11, i64 0, !7, i64 4, !6, i64 264, !6, i64 272, !11, i64 280, !6, i64 288, !7, i64 296, !12, i64 304}
!11 = !{!"int", !7, i64 0}
!12 = !{!"", !11, i64 0, !13, i64 4, !11, i64 8, !11, i64 12, !11, i64 16, !11, i64 20, !11, i64 24, !14, i64 32, !14, i64 40}
!13 = !{!"", !11, i64 0}
!14 = !{!"long", !7, i64 0}
!15 = !{!10, !6, i64 264}
!16 = !{!10, !6, i64 272}
!17 = !{!10, !7, i64 296}


; 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 range(i32 0, 2) i32 @lwpkt_init(ptr noundef writeonly %0, ptr noundef %1, ptr noundef %2) local_unnamed_addr #0 {
  %4 = icmp eq ptr %0, null
  br i1 %4, label %9, label %5

5:                                                ; preds = %3
  %6 = getelementptr inbounds i8, ptr %0, i64 264
  tail call void @llvm.memset.p0.i64(ptr noundef nonnull align 8 dereferenceable(352) %0, i8 0, i64 352, i1 false)
  store ptr %1, ptr %6, align 8, !tbaa !5
  %7 = getelementptr inbounds i8, ptr %0, i64 272
  store ptr %2, ptr %7, align 8, !tbaa !14
  %8 = getelementptr inbounds i8, ptr %0, i64 296
  store i8 -1, ptr %8, align 8, !tbaa !15
  br label %9

9:                                                ; preds = %3, %5
  %.0 = phi i32 [ 0, %5 ], [ 1, %3 ]
  ret i32 %.0
}

; Function Attrs: mustprogress 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 = { mustprogress 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, !10, i64 264}
!6 = !{!"lwpkt", !7, i64 0, !8, i64 4, !10, i64 264, !10, i64 272, !7, i64 280, !10, i64 288, !8, i64 296, !11, i64 304}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!"", !7, i64 0, !12, i64 4, !7, i64 8, !7, i64 12, !7, i64 16, !7, i64 20, !7, i64 24, !13, i64 32, !13, i64 40}
!12 = !{!"", !7, i64 0}
!13 = !{!"long", !8, i64 0}
!14 = !{!6, !10, i64 272}
!15 = !{!6, !8, i64 296}


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