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

; 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 }

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

9:                                                ; preds = %2
  %10 = load ptr, ptr %3, align 8, !tbaa !5
  call void @ush_read_start(ptr noundef %10)
  br label %17

11:                                               ; preds = %2
  %12 = load ptr, ptr %3, align 8, !tbaa !5
  %13 = call zeroext i1 @ush_read_char(ptr noundef %12)
  %14 = load ptr, ptr %4, align 8, !tbaa !5
  %15 = zext i1 %13 to i8
  store i8 %15, ptr %14, align 1, !tbaa !9
  br label %17

16:                                               ; preds = %2
  store i8 0, ptr %5, align 1, !tbaa !9
  br label %17

17:                                               ; preds = %16, %11, %9
  %18 = load i8, ptr %5, align 1, !tbaa !9, !range !16, !noundef !17
  %19 = trunc i8 %18 to i1
  call void @llvm.lifetime.end.p0(i64 1, ptr %5) #3
  ret i1 %19
}

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

declare void @ush_read_start(ptr noundef) #2

declare zeroext i1 @ush_read_char(ptr noundef) #2

; 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 = { "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 = !{!"_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 = !{i8 0, i8 2}
!17 = !{}


; 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_read_service(ptr noundef %0, ptr nocapture noundef writeonly %1) local_unnamed_addr #0 {
  %3 = getelementptr inbounds i8, ptr %0, i64 8
  %4 = load i32, ptr %3, align 8, !tbaa !5
  switch i32 %4, label %9 [
    i32 7, label %5
    i32 8, label %6
  ]

5:                                                ; preds = %2
  tail call void @ush_read_start(ptr noundef nonnull %0) #2
  br label %9

6:                                                ; preds = %2
  %7 = tail call zeroext i1 @ush_read_char(ptr noundef nonnull %0) #2
  %8 = zext i1 %7 to i8
  store i8 %8, ptr %1, align 1, !tbaa !14
  br label %9

9:                                                ; preds = %2, %6, %5
  %.0 = phi i1 [ true, %6 ], [ true, %5 ], [ false, %2 ]
  ret i1 %.0
}

declare void @ush_read_start(ptr noundef) local_unnamed_addr #1

declare zeroext i1 @ush_read_char(ptr 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, !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 = !{!12, !12, i64 0}


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