; LLVM IR from devparthgarg/Data-Structures-and-Algorithms :: 05. Arrays/09 Move Zeros to End (09a Move Zero to End)

; 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"

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_Z9moveZerosPii(ptr noundef, i32 noundef) #0

; 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

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z7displayPii(ptr noundef, i32 noundef) #2

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #3 {
  %1 = alloca i32, align 4
  %2 = alloca [9 x i32], align 16
  %3 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 36, ptr %2) #5
  call void @llvm.memset.p0.i64(ptr align 16 %2, i8 0, i64 36, i1 false)
  %4 = getelementptr inbounds [9 x i32], ptr %2, i32 0, i32 1
  store i32 3, ptr %4, align 4
  %5 = getelementptr inbounds [9 x i32], ptr %2, i32 0, i32 2
  store i32 2, ptr %5, align 8
  %6 = getelementptr inbounds [9 x i32], ptr %2, i32 0, i32 3
  store i32 1, ptr %6, align 4
  %7 = getelementptr inbounds [9 x i32], ptr %2, i32 0, i32 5
  store i32 4, ptr %7, align 4
  %8 = getelementptr inbounds [9 x i32], ptr %2, i32 0, i32 6
  store i32 7, ptr %8, align 8
  %9 = getelementptr inbounds [9 x i32], ptr %2, i32 0, i32 8
  store i32 2, ptr %9, align 16
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #5
  store i32 9, ptr %3, align 4, !tbaa !5
  %10 = getelementptr inbounds [9 x i32], ptr %2, i64 0, i64 0
  %11 = load i32, ptr %3, align 4, !tbaa !5
  call void @_Z7displayPii(ptr noundef %10, i32 noundef %11)
  %12 = getelementptr inbounds [9 x i32], ptr %2, i64 0, i64 0
  %13 = load i32, ptr %3, align 4, !tbaa !5
  call void @_Z9moveZerosPii(ptr noundef %12, i32 noundef %13)
  %14 = getelementptr inbounds [9 x i32], ptr %2, i64 0, i64 0
  %15 = load i32, ptr %3, align 4, !tbaa !5
  call void @_Z7displayPii(ptr noundef %14, i32 noundef %15)
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #5
  call void @llvm.lifetime.end.p0(i64 36, ptr %2) #5
  ret i32 0
}

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

attributes #0 = { mustprogress 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 = { mustprogress 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 #3 = { mustprogress norecurse 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 #4 = { nocallback nofree nounwind willreturn memory(argmem: write) }
attributes #5 = { 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++ TBAA"}


; 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 nounwind uwtable
declare dso_local void @_Z9moveZerosPii(ptr noundef, i32 noundef) local_unnamed_addr #0

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

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

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z7displayPii(ptr noundef, i32 noundef) local_unnamed_addr #2

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #3 {
  %1 = alloca [9 x i32], align 16
  call void @llvm.lifetime.start.p0(i64 36, ptr nonnull %1) #5
  call void @llvm.memset.p0.i64(ptr noundef nonnull align 16 dereferenceable(36) %1, i8 0, i64 32, i1 false)
  %2 = getelementptr inbounds i8, ptr %1, i64 4
  store i32 3, ptr %2, align 4
  %3 = getelementptr inbounds i8, ptr %1, i64 8
  store i32 2, ptr %3, align 8
  %4 = getelementptr inbounds i8, ptr %1, i64 12
  store i32 1, ptr %4, align 4
  %5 = getelementptr inbounds i8, ptr %1, i64 20
  store i32 4, ptr %5, align 4
  %6 = getelementptr inbounds i8, ptr %1, i64 24
  store i32 7, ptr %6, align 8
  %7 = getelementptr inbounds i8, ptr %1, i64 32
  store i32 2, ptr %7, align 16
  call void @_Z7displayPii(ptr noundef nonnull %1, i32 noundef 9)
  call void @_Z9moveZerosPii(ptr noundef nonnull %1, i32 noundef 9)
  call void @_Z7displayPii(ptr noundef nonnull %1, i32 noundef 9)
  call void @llvm.lifetime.end.p0(i64 36, ptr nonnull %1) #5
  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) #4

attributes #0 = { mustprogress 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 = { mustprogress 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 #3 = { mustprogress norecurse 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 #4 = { mustprogress nocallback nofree nounwind willreturn memory(argmem: write) }
attributes #5 = { 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)"}


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