; LLVM IR from kmilo17pet/QuarkTS-cpp :: src/util.ll (ZN3qOS4util6strcpyEPcPKcm)

; 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: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZN3qOS4util6strlenEPKcm(ptr noundef, i64 noundef) #1

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef i64 @_ZN3qOS4util6strcpyEPcPKcm(ptr noundef %0, ptr noundef %1, i64 noundef %2) #1 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca i64, align 8
  %7 = alloca i64, align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  store i64 %2, ptr %6, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #3
  %8 = load ptr, ptr %5, align 8, !tbaa !5
  %9 = call noundef i64 @_ZN3qOS4util6strlenEPKcm(ptr noundef %8, i64 noundef 512) #3
  store i64 %9, ptr %7, align 8, !tbaa !9
  %10 = load i64, ptr %7, align 8, !tbaa !9
  %11 = add i64 %10, 1
  %12 = load i64, ptr %6, align 8, !tbaa !9
  %13 = icmp ult i64 %11, %12
  br i1 %13, label %14, label %19

14:                                               ; preds = %3
  %15 = load ptr, ptr %4, align 8, !tbaa !5
  %16 = load ptr, ptr %5, align 8, !tbaa !5
  %17 = load i64, ptr %7, align 8, !tbaa !9
  %18 = add i64 %17, 1
  call void @llvm.memcpy.p0.p0.i64(ptr align 1 %15, ptr align 1 %16, i64 %18, i1 false)
  br label %33

19:                                               ; preds = %3
  %20 = load i64, ptr %6, align 8, !tbaa !9
  %21 = icmp ne i64 0, %20
  br i1 %21, label %22, label %31

22:                                               ; preds = %19
  %23 = load ptr, ptr %4, align 8, !tbaa !5
  %24 = load ptr, ptr %5, align 8, !tbaa !5
  %25 = load i64, ptr %6, align 8, !tbaa !9
  %26 = sub i64 %25, 1
  call void @llvm.memcpy.p0.p0.i64(ptr align 1 %23, ptr align 1 %24, i64 %26, i1 false)
  %27 = load ptr, ptr %4, align 8, !tbaa !5
  %28 = load i64, ptr %6, align 8, !tbaa !9
  %29 = sub i64 %28, 1
  %30 = getelementptr inbounds i8, ptr %27, i64 %29
  store i8 0, ptr %30, align 1, !tbaa !11
  br label %32

31:                                               ; preds = %19
  br label %32

32:                                               ; preds = %31, %22
  br label %33

33:                                               ; preds = %32, %14
  %34 = load i64, ptr %7, align 8, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #3
  ret i64 %34
}

; 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) #2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #2 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
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++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"long", !7, i64 0}
!11 = !{!7, !7, i64 0}


; 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 noundef i64 @_ZN3qOS4util6strlenEPKcm(ptr noundef, i64 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef i64 @_ZN3qOS4util6strcpyEPcPKcm(ptr nocapture noundef writeonly %0, ptr noundef %1, i64 noundef %2) local_unnamed_addr #0 {
  %4 = tail call noundef i64 @_ZN3qOS4util6strlenEPKcm(ptr noundef %1, i64 noundef 512) #2
  %5 = add i64 %4, 1
  %6 = icmp ult i64 %5, %2
  br i1 %6, label %7, label %8

7:                                                ; preds = %3
  tail call void @llvm.memcpy.p0.p0.i64(ptr align 1 %0, ptr align 1 %1, i64 %5, i1 false)
  br label %12

8:                                                ; preds = %3
  %.not = icmp eq i64 %2, 0
  br i1 %.not, label %12, label %9

9:                                                ; preds = %8
  %10 = add i64 %2, -1
  tail call void @llvm.memcpy.p0.p0.i64(ptr align 1 %0, ptr align 1 %1, i64 %10, i1 false)
  %11 = getelementptr inbounds i8, ptr %0, i64 %10
  store i8 0, ptr %11, align 1, !tbaa !5
  br label %12

12:                                               ; preds = %9, %8, %7
  ret i64 %4
}

; 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) #1

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 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 = !{!"omnipotent char", !7, i64 0}
!7 = !{!"Simple C++ TBAA"}


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