; LLVM IR from apsrcreatix/Socket-Programming-With-C :: 09-remote-command-execution-udp (server)

; 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.sockaddr_in = type { i16, i16, %struct.in_addr, [8 x i8] }
%struct.in_addr = type { i32 }

@__const.main.message = external hidden unnamed_addr constant [32 x i8], align 16
@.str = external hidden unnamed_addr constant [25 x i8], align 1

; Function Attrs: nounwind uwtable
define dso_local i32 @main() #0 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca [1000 x i8], align 16
  %5 = alloca [32 x i8], align 16
  %6 = alloca %struct.sockaddr_in, align 4
  %7 = alloca %struct.sockaddr_in, align 4
  %8 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #7
  %9 = call i32 @socket(i32 noundef 2, i32 noundef 2, i32 noundef 0) #7
  store i32 %9, ptr %2, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #7
  call void @llvm.lifetime.start.p0(i64 1000, ptr %4) #7
  call void @llvm.lifetime.start.p0(i64 32, ptr %5) #7
  call void @llvm.memcpy.p0.p0.i64(ptr align 16 %5, ptr align 16 @__const.main.message, i64 32, i1 false)
  call void @llvm.lifetime.start.p0(i64 16, ptr %6) #7
  call void @llvm.lifetime.start.p0(i64 16, ptr %7) #7
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #7
  store i32 16, ptr %8, align 4, !tbaa !5
  call void @llvm.memset.p0.i64(ptr align 4 %7, i8 0, i64 16, i1 false)
  %10 = getelementptr inbounds %struct.sockaddr_in, ptr %7, i32 0, i32 0
  store i16 2, ptr %10, align 4, !tbaa !9
  %11 = call i32 @__bswap_32(i32 noundef 0)
  %12 = getelementptr inbounds %struct.sockaddr_in, ptr %7, i32 0, i32 2
  %13 = getelementptr inbounds %struct.in_addr, ptr %12, i32 0, i32 0
  store i32 %11, ptr %13, align 4, !tbaa !13
  %14 = call zeroext i16 @__bswap_16(i16 noundef zeroext 9976)
  %15 = getelementptr inbounds %struct.sockaddr_in, ptr %7, i32 0, i32 1
  store i16 %14, ptr %15, align 2, !tbaa !14
  %16 = load i32, ptr %2, align 4, !tbaa !5
  %17 = call i32 @bind(i32 noundef %16, ptr noundef %7, i32 noundef 16) #7
  br label %18

18:                                               ; preds = %19, %0
  br label %19

19:                                               ; preds = %18
  %20 = getelementptr inbounds [1000 x i8], ptr %4, i64 0, i64 0
  call void @llvm.memset.p0.i64(ptr align 16 %20, i8 0, i64 1000, i1 false)
  %21 = load i32, ptr %2, align 4, !tbaa !5
  %22 = getelementptr inbounds [1000 x i8], ptr %4, i64 0, i64 0
  %23 = call i64 @recvfrom(i32 noundef %21, ptr noundef %22, i64 noundef 1000, i32 noundef 0, ptr noundef %6, ptr noundef %8)
  %24 = getelementptr inbounds [1000 x i8], ptr %4, i64 0, i64 0
  %25 = call i32 @system(ptr noundef %24)
  %26 = getelementptr inbounds [1000 x i8], ptr %4, i64 0, i64 0
  %27 = call i32 (ptr, ...) @printf(ptr noundef @.str, ptr noundef %26)
  %28 = load i32, ptr %2, align 4, !tbaa !5
  %29 = getelementptr inbounds [32 x i8], ptr %5, i64 0, i64 0
  %30 = load i32, ptr %8, align 4, !tbaa !5
  %31 = call i64 @sendto(i32 noundef %28, ptr noundef %29, i64 noundef 32, i32 noundef 0, ptr noundef %6, i32 noundef %30)
  br label %18
}

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

; Function Attrs: nounwind
declare i32 @socket(i32 noundef, i32 noundef, i32 noundef) #2

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #3

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #4

; Function Attrs: inlinehint nounwind uwtable
declare hidden i32 @__bswap_32(i32 noundef) #5

; Function Attrs: inlinehint nounwind uwtable
declare hidden zeroext i16 @__bswap_16(i16 noundef zeroext) #5

; Function Attrs: nounwind
declare i32 @bind(i32 noundef, ptr noundef, i32 noundef) #2

declare i64 @recvfrom(i32 noundef, ptr noundef, i64 noundef, i32 noundef, ptr noundef, ptr noundef) #6

declare i32 @system(ptr noundef) #6

declare i32 @printf(ptr noundef, ...) #6

declare i64 @sendto(i32 noundef, ptr noundef, i64 noundef, i32 noundef, ptr noundef, i32 noundef) #6

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 "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 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #4 = { nocallback nofree nounwind willreturn memory(argmem: write) }
attributes #5 = { inlinehint 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 #6 = { "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 #7 = { 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 = !{!10, !11, i64 0}
!10 = !{!"sockaddr_in", !11, i64 0, !11, i64 2, !12, i64 4, !7, i64 8}
!11 = !{!"short", !7, i64 0}
!12 = !{!"in_addr", !6, i64 0}
!13 = !{!10, !6, i64 4}
!14 = !{!10, !11, i64 2}


; 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.sockaddr_in = type { i16, i16, %struct.in_addr, [8 x i8] }
%struct.in_addr = type { i32 }

@__const.main.message = external hidden unnamed_addr constant [32 x i8], align 16
@.str = external hidden unnamed_addr constant [25 x i8], align 1

; Function Attrs: noreturn nounwind uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 {
  %1 = alloca [1000 x i8], align 16
  %2 = alloca [32 x i8], align 16
  %3 = alloca %struct.sockaddr_in, align 4
  %4 = alloca %struct.sockaddr_in, align 4
  %5 = alloca i32, align 4
  %6 = tail call i32 @socket(i32 noundef 2, i32 noundef 2, i32 noundef 0) #9
  call void @llvm.lifetime.start.p0(i64 1000, ptr nonnull %1) #9
  call void @llvm.lifetime.start.p0(i64 32, ptr nonnull %2) #9
  call void @llvm.memcpy.p0.p0.i64(ptr noundef nonnull align 16 dereferenceable(32) %2, ptr noundef nonnull align 16 dereferenceable(32) @__const.main.message, i64 32, i1 false)
  call void @llvm.lifetime.start.p0(i64 16, ptr nonnull %3) #9
  call void @llvm.lifetime.start.p0(i64 16, ptr nonnull %4) #9
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %5) #9
  store i32 16, ptr %5, align 4, !tbaa !5
  %7 = getelementptr inbounds i8, ptr %4, i64 8
  store i64 0, ptr %7, align 4
  store i16 2, ptr %4, align 4, !tbaa !9
  %8 = tail call i32 @__bswap_32(i32 noundef 0)
  %9 = getelementptr inbounds i8, ptr %4, i64 4
  store i32 %8, ptr %9, align 4, !tbaa !13
  %10 = tail call zeroext i16 @__bswap_16(i16 noundef zeroext 9976)
  %11 = getelementptr inbounds i8, ptr %4, i64 2
  store i16 %10, ptr %11, align 2, !tbaa !14
  %12 = call i32 @bind(i32 noundef %6, ptr noundef nonnull %4, i32 noundef 16) #9
  br label %13

13:                                               ; preds = %13, %0
  call void @llvm.memset.p0.i64(ptr noundef nonnull align 16 dereferenceable(1000) %1, i8 0, i64 1000, i1 false)
  %14 = call i64 @recvfrom(i32 noundef %6, ptr noundef nonnull %1, i64 noundef 1000, i32 noundef 0, ptr noundef nonnull %3, ptr noundef nonnull %5) #9
  %15 = call i32 @system(ptr noundef nonnull %1) #9
  %16 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str, ptr noundef nonnull %1)
  %17 = load i32, ptr %5, align 4, !tbaa !5
  %18 = call i64 @sendto(i32 noundef %6, ptr noundef nonnull %2, i64 noundef 32, i32 noundef 0, ptr noundef nonnull %3, i32 noundef %17) #9
  br label %13
}

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

; Function Attrs: nounwind
declare i32 @socket(i32 noundef, i32 noundef, i32 noundef) local_unnamed_addr #2

; Function Attrs: mustprogress nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #3

; Function Attrs: mustprogress nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #4

; Function Attrs: inlinehint nounwind uwtable
declare hidden i32 @__bswap_32(i32 noundef) local_unnamed_addr #5

; Function Attrs: inlinehint nounwind uwtable
declare hidden zeroext i16 @__bswap_16(i16 noundef zeroext) local_unnamed_addr #5

; Function Attrs: nounwind
declare i32 @bind(i32 noundef, ptr noundef, i32 noundef) local_unnamed_addr #2

declare i64 @recvfrom(i32 noundef, ptr noundef, i64 noundef, i32 noundef, ptr noundef, ptr noundef) local_unnamed_addr #6

; Function Attrs: nofree
declare noundef i32 @system(ptr nocapture noundef readonly) local_unnamed_addr #7

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #8

declare i64 @sendto(i32 noundef, ptr noundef, i64 noundef, i32 noundef, ptr noundef, i32 noundef) local_unnamed_addr #6

attributes #0 = { noreturn 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 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { nounwind "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 = { mustprogress nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #4 = { mustprogress nocallback nofree nounwind willreturn memory(argmem: write) }
attributes #5 = { inlinehint 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 #6 = { "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 #7 = { nofree "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 #8 = { nofree nounwind "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 #9 = { 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 = !{!10, !11, i64 0}
!10 = !{!"sockaddr_in", !11, i64 0, !11, i64 2, !12, i64 4, !7, i64 8}
!11 = !{!"short", !7, i64 0}
!12 = !{!"in_addr", !6, i64 0}
!13 = !{!10, !6, i64 4}
!14 = !{!10, !11, i64 2}


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