; LLVM IR from marcinbor85/microshell :: src/src (ush_process)

; 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.ush_object = type { ptr, i32, i32, i32, ptr, i64, i64, i32, i64, i64, i64, i8, ptr, ptr, ptr, %struct.ush_node_object, ptr, ptr, ptr, i64, i64, ptr, i64, i32, i32, ptr, ptr, ptr, i64, i64, i64 }
%struct.ush_node_object = type { ptr, i64, ptr, ptr, ptr, ptr }
%struct.ush_file_descriptor = type { ptr, ptr, ptr, ptr, ptr, ptr, ptr }

; Function Attrs: nounwind uwtable
define dso_local zeroext i1 @ush_process_service(ptr noundef %0) #0 {
  %2 = alloca ptr, align 8
  %3 = alloca i8, align 1
  store ptr %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 1, ptr %3) #2
  store i8 1, ptr %3, align 1, !tbaa !9
  %4 = load ptr, ptr %2, align 8, !tbaa !5
  %5 = getelementptr inbounds %struct.ush_object, ptr %4, i32 0, i32 1
  %6 = load i32, ptr %5, align 8, !tbaa !11
  switch i32 %6, label %27 [
    i32 14, label %7
    i32 15, label %7
    i32 16, label %7
  ]

7:                                                ; preds = %1, %1, %1
  %8 = load ptr, ptr %2, align 8, !tbaa !5
  %9 = getelementptr inbounds %struct.ush_object, ptr %8, i32 0, i32 18
  %10 = load ptr, ptr %9, align 8, !tbaa !16
  %11 = getelementptr inbounds %struct.ush_file_descriptor, ptr %10, i32 0, i32 6
  %12 = load ptr, ptr %11, align 8, !tbaa !17
  %13 = icmp eq ptr %12, null
  br i1 %13, label %14, label %17

14:                                               ; preds = %7
  %15 = load ptr, ptr %2, align 8, !tbaa !5
  %16 = getelementptr inbounds %struct.ush_object, ptr %15, i32 0, i32 1
  store i32 0, ptr %16, align 8, !tbaa !11
  br label %28

17:                                               ; preds = %7
  %18 = load ptr, ptr %2, align 8, !tbaa !5
  %19 = getelementptr inbounds %struct.ush_object, ptr %18, i32 0, i32 18
  %20 = load ptr, ptr %19, align 8, !tbaa !16
  %21 = getelementptr inbounds %struct.ush_file_descriptor, ptr %20, i32 0, i32 6
  %22 = load ptr, ptr %21, align 8, !tbaa !17
  %23 = load ptr, ptr %2, align 8, !tbaa !5
  %24 = load ptr, ptr %2, align 8, !tbaa !5
  %25 = getelementptr inbounds %struct.ush_object, ptr %24, i32 0, i32 18
  %26 = load ptr, ptr %25, align 8, !tbaa !16
  call void %22(ptr noundef %23, ptr noundef %26)
  br label %28

27:                                               ; preds = %1
  store i8 0, ptr %3, align 1, !tbaa !9
  br label %28

28:                                               ; preds = %27, %17, %14
  %29 = load i8, ptr %3, align 1, !tbaa !9, !range !19, !noundef !20
  %30 = trunc i8 %29 to i1
  call void @llvm.lifetime.end.p0(i64 1, ptr %3) #2
  ret i1 %30
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #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 nosync nounwind willreturn memory(argmem: readwrite) }
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 = !{!"_Bool", !7, i64 0}
!11 = !{!12, !13, i64 8}
!12 = !{!"ush_object", !6, i64 0, !13, i64 8, !13, i64 12, !13, i64 16, !6, i64 24, !14, i64 32, !14, i64 40, !13, i64 48, !14, i64 56, !14, i64 64, !14, i64 72, !10, i64 80, !6, i64 88, !6, i64 96, !6, i64 104, !15, i64 112, !6, i64 160, !6, i64 168, !6, i64 176, !14, i64 184, !14, i64 192, !6, i64 200, !14, i64 208, !13, i64 216, !13, i64 220, !6, i64 224, !6, i64 232, !6, i64 240, !14, i64 248, !14, i64 256, !14, i64 264}
!13 = !{!"int", !7, i64 0}
!14 = !{!"long", !7, i64 0}
!15 = !{!"ush_node_object", !6, i64 0, !14, i64 8, !6, i64 16, !6, i64 24, !6, i64 32, !6, i64 40}
!16 = !{!12, !6, i64 176}
!17 = !{!18, !6, i64 48}
!18 = !{!"ush_file_descriptor", !6, i64 0, !6, i64 8, !6, i64 16, !6, i64 24, !6, i64 32, !6, i64 40, !6, i64 48}
!19 = !{i8 0, i8 2}
!20 = !{}


; 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: nounwind uwtable
define dso_local noundef zeroext i1 @ush_process_service(ptr noundef %0) local_unnamed_addr #0 {
  %2 = getelementptr inbounds i8, ptr %0, i64 8
  %3 = load i32, ptr %2, align 8, !tbaa !5
  %.off = add i32 %3, -14
  %switch = icmp ult i32 %.off, 3
  br i1 %switch, label %4, label %12

4:                                                ; preds = %1
  %5 = getelementptr inbounds i8, ptr %0, i64 176
  %6 = load ptr, ptr %5, align 8, !tbaa !14
  %7 = getelementptr inbounds i8, ptr %6, i64 48
  %8 = load ptr, ptr %7, align 8, !tbaa !15
  %9 = icmp eq ptr %8, null
  br i1 %9, label %10, label %11

10:                                               ; preds = %4
  store i32 0, ptr %2, align 8, !tbaa !5
  br label %12

11:                                               ; preds = %4
  tail call void %8(ptr noundef nonnull %0, ptr noundef nonnull %6) #1
  br label %12

12:                                               ; preds = %1, %11, %10
  ret i1 %switch
}

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 = { 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, !10, i64 8}
!6 = !{!"ush_object", !7, i64 0, !10, i64 8, !10, i64 12, !10, i64 16, !7, i64 24, !11, i64 32, !11, i64 40, !10, i64 48, !11, i64 56, !11, i64 64, !11, i64 72, !12, i64 80, !7, i64 88, !7, i64 96, !7, i64 104, !13, i64 112, !7, i64 160, !7, i64 168, !7, i64 176, !11, i64 184, !11, i64 192, !7, i64 200, !11, i64 208, !10, i64 216, !10, i64 220, !7, i64 224, !7, i64 232, !7, i64 240, !11, i64 248, !11, i64 256, !11, i64 264}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"int", !8, i64 0}
!11 = !{!"long", !8, i64 0}
!12 = !{!"_Bool", !8, i64 0}
!13 = !{!"ush_node_object", !7, i64 0, !11, i64 8, !7, i64 16, !7, i64 24, !7, i64 32, !7, i64 40}
!14 = !{!6, !7, i64 176}
!15 = !{!16, !7, i64 48}
!16 = !{!"ush_file_descriptor", !7, i64 0, !7, i64 8, !7, i64 16, !7, i64 24, !7, i64 32, !7, i64 40, !7, i64 48}


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