; LLVM IR from MostafaTwfiq/C-DataStructures-And-Algorithms :: Algorithms/ArraysAlg/Sources (ArraysAlg)

; 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"

@stderr = external global ptr, align 8
@.str = external hidden unnamed_addr constant [31 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [13 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [42 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [13 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [13 x i8], align 1
@.str.27 = external hidden unnamed_addr constant [20 x i8], align 1
@.str.28 = external hidden unnamed_addr constant [19 x i8], align 1

; 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 nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #1

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

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

; Function Attrs: noreturn nounwind
declare void @exit(i32 noundef) #3

; Function Attrs: nounwind uwtable
define dso_local void @fillArr(ptr noundef %0, ptr noundef %1, i32 noundef %2, i32 noundef %3) #4 {
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca ptr, align 8
  %10 = alloca i32, align 4
  store ptr %0, ptr %5, align 8, !tbaa !5
  store ptr %1, ptr %6, align 8, !tbaa !5
  store i32 %2, ptr %7, align 4, !tbaa !9
  store i32 %3, ptr %8, align 4, !tbaa !9
  %11 = load ptr, ptr %5, align 8, !tbaa !5
  %12 = icmp eq ptr %11, null
  br i1 %12, label %13, label %16

13:                                               ; preds = %4
  %14 = load ptr, ptr @stderr, align 8, !tbaa !5
  %15 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %14, ptr noundef @.str, ptr noundef @.str.1, ptr noundef @.str.27) #5
  call void @exit(i32 noundef -83386157) #6
  unreachable

16:                                               ; preds = %4
  %17 = load ptr, ptr %6, align 8, !tbaa !5
  %18 = icmp eq ptr %17, null
  br i1 %18, label %19, label %22

19:                                               ; preds = %16
  %20 = load ptr, ptr @stderr, align 8, !tbaa !5
  %21 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %20, ptr noundef @.str.3, ptr noundef @.str.28, ptr noundef @.str.27) #5
  call void @exit(i32 noundef -83384987) #6
  unreachable

22:                                               ; preds = %16
  %23 = load i32, ptr %7, align 4, !tbaa !9
  %24 = icmp slt i32 %23, 0
  br i1 %24, label %25, label %28

25:                                               ; preds = %22
  %26 = load ptr, ptr @stderr, align 8, !tbaa !5
  %27 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %26, ptr noundef @.str.3, ptr noundef @.str.4, ptr noundef @.str.27) #5
  call void @exit(i32 noundef -83384987) #6
  unreachable

28:                                               ; preds = %22
  %29 = load i32, ptr %8, align 4, !tbaa !9
  %30 = icmp sle i32 %29, 0
  br i1 %30, label %31, label %34

31:                                               ; preds = %28
  %32 = load ptr, ptr @stderr, align 8, !tbaa !5
  %33 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %32, ptr noundef @.str.3, ptr noundef @.str.5, ptr noundef @.str.27) #5
  call void @exit(i32 noundef -83384987) #6
  unreachable

34:                                               ; preds = %28
  br label %35

35:                                               ; preds = %34
  br label %36

36:                                               ; preds = %35
  br label %37

37:                                               ; preds = %36
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #5
  %38 = load ptr, ptr %5, align 8, !tbaa !5
  store ptr %38, ptr %9, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #5
  store i32 0, ptr %10, align 4, !tbaa !9
  br label %39

39:                                               ; preds = %54, %37
  %40 = load i32, ptr %10, align 4, !tbaa !9
  %41 = load i32, ptr %7, align 4, !tbaa !9
  %42 = icmp slt i32 %40, %41
  br i1 %42, label %44, label %43

43:                                               ; preds = %39
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #5
  br label %57

44:                                               ; preds = %39
  %45 = load ptr, ptr %9, align 8, !tbaa !5
  %46 = load i32, ptr %10, align 4, !tbaa !9
  %47 = load i32, ptr %8, align 4, !tbaa !9
  %48 = mul nsw i32 %46, %47
  %49 = sext i32 %48 to i64
  %50 = getelementptr inbounds i8, ptr %45, i64 %49
  %51 = load ptr, ptr %6, align 8, !tbaa !5
  %52 = load i32, ptr %8, align 4, !tbaa !9
  %53 = sext i32 %52 to i64
  call void @llvm.memcpy.p0.p0.i64(ptr align 1 %50, ptr align 1 %51, i64 %53, i1 false)
  br label %54

54:                                               ; preds = %44
  %55 = load i32, ptr %10, align 4, !tbaa !9
  %56 = add nsw i32 %55, 1
  store i32 %56, ptr %10, align 4, !tbaa !9
  br label %39, !llvm.loop !11

57:                                               ; preds = %43
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #5
  ret void
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { nocallback nofree 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 = { noreturn 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 #4 = { 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 #5 = { nounwind }
attributes #6 = { noreturn 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 = !{!"int", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}


; 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"

@stderr = external local_unnamed_addr global ptr, align 8
@.str = external hidden unnamed_addr constant [31 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [13 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [42 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [13 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [13 x i8], align 1
@.str.27 = external hidden unnamed_addr constant [20 x i8], align 1
@.str.28 = external hidden unnamed_addr constant [19 x i8], align 1

; 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) #0

; Function Attrs: nofree nounwind
declare noundef i32 @fprintf(ptr nocapture noundef, ptr nocapture noundef readonly, ...) local_unnamed_addr #1

; Function Attrs: noreturn nounwind
declare void @exit(i32 noundef) local_unnamed_addr #2

; Function Attrs: nounwind uwtable
define dso_local void @fillArr(ptr noundef writeonly %0, ptr noundef readonly %1, i32 noundef %2, i32 noundef %3) local_unnamed_addr #3 {
  %5 = icmp eq ptr %0, null
  br i1 %5, label %6, label %9

6:                                                ; preds = %4
  %7 = load ptr, ptr @stderr, align 8, !tbaa !5
  %8 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %7, ptr noundef nonnull @.str, ptr noundef nonnull @.str.1, ptr noundef nonnull @.str.27) #4
  tail call void @exit(i32 noundef -83386157) #5
  unreachable

9:                                                ; preds = %4
  %10 = icmp eq ptr %1, null
  br i1 %10, label %11, label %14

11:                                               ; preds = %9
  %12 = load ptr, ptr @stderr, align 8, !tbaa !5
  %13 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %12, ptr noundef nonnull @.str.3, ptr noundef nonnull @.str.28, ptr noundef nonnull @.str.27) #4
  tail call void @exit(i32 noundef -83384987) #5
  unreachable

14:                                               ; preds = %9
  %15 = icmp slt i32 %2, 0
  br i1 %15, label %16, label %19

16:                                               ; preds = %14
  %17 = load ptr, ptr @stderr, align 8, !tbaa !5
  %18 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %17, ptr noundef nonnull @.str.3, ptr noundef nonnull @.str.4, ptr noundef nonnull @.str.27) #4
  tail call void @exit(i32 noundef -83384987) #5
  unreachable

19:                                               ; preds = %14
  %20 = icmp slt i32 %3, 1
  br i1 %20, label %23, label %.preheader

.preheader:                                       ; preds = %19
  %.not = icmp eq i32 %2, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %.preheader
  %21 = zext nneg i32 %3 to i64
  %wide.trip.count = zext nneg i32 %2 to i64
  %xtraiter = and i64 %wide.trip.count, 3
  %22 = icmp ult i32 %2, 4
  br i1 %22, label %._crit_edge.loopexit.unr-lcssa, label %.lr.ph.new

.lr.ph.new:                                       ; preds = %.lr.ph
  %unroll_iter = and i64 %wide.trip.count, 2147483644
  br label %28

23:                                               ; preds = %19
  %24 = load ptr, ptr @stderr, align 8, !tbaa !5
  %25 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %24, ptr noundef nonnull @.str.3, ptr noundef nonnull @.str.5, ptr noundef nonnull @.str.27) #4
  tail call void @exit(i32 noundef -83384987) #5
  unreachable

._crit_edge.loopexit.unr-lcssa:                   ; preds = %28, %.lr.ph
  %indvars.iv.unr = phi i64 [ 0, %.lr.ph ], [ %indvars.iv.next.3, %28 ]
  %lcmp.mod.not = icmp eq i64 %xtraiter, 0
  br i1 %lcmp.mod.not, label %._crit_edge, label %.epil.preheader

.epil.preheader:                                  ; preds = %._crit_edge.loopexit.unr-lcssa, %.epil.preheader
  %indvars.iv.epil = phi i64 [ %indvars.iv.next.epil, %.epil.preheader ], [ %indvars.iv.unr, %._crit_edge.loopexit.unr-lcssa ]
  %epil.iter = phi i64 [ %epil.iter.next, %.epil.preheader ], [ 0, %._crit_edge.loopexit.unr-lcssa ]
  %26 = mul nuw nsw i64 %indvars.iv.epil, %21
  %27 = getelementptr inbounds i8, ptr %0, i64 %26
  tail call void @llvm.memcpy.p0.p0.i64(ptr nonnull align 1 %27, ptr nonnull align 1 %1, i64 %21, i1 false)
  %indvars.iv.next.epil = add nuw nsw i64 %indvars.iv.epil, 1
  %epil.iter.next = add i64 %epil.iter, 1
  %epil.iter.cmp.not = icmp eq i64 %epil.iter.next, %xtraiter
  br i1 %epil.iter.cmp.not, label %._crit_edge, label %.epil.preheader, !llvm.loop !9

._crit_edge:                                      ; preds = %._crit_edge.loopexit.unr-lcssa, %.epil.preheader, %.preheader
  ret void

28:                                               ; preds = %28, %.lr.ph.new
  %indvars.iv = phi i64 [ 0, %.lr.ph.new ], [ %indvars.iv.next.3, %28 ]
  %niter = phi i64 [ 0, %.lr.ph.new ], [ %niter.next.3, %28 ]
  %29 = mul nuw nsw i64 %indvars.iv, %21
  %30 = getelementptr inbounds i8, ptr %0, i64 %29
  tail call void @llvm.memcpy.p0.p0.i64(ptr nonnull align 1 %30, ptr nonnull align 1 %1, i64 %21, i1 false)
  %indvars.iv.next = or disjoint i64 %indvars.iv, 1
  %31 = mul nuw nsw i64 %indvars.iv.next, %21
  %32 = getelementptr inbounds i8, ptr %0, i64 %31
  tail call void @llvm.memcpy.p0.p0.i64(ptr nonnull align 1 %32, ptr nonnull align 1 %1, i64 %21, i1 false)
  %indvars.iv.next.1 = or disjoint i64 %indvars.iv, 2
  %33 = mul nuw nsw i64 %indvars.iv.next.1, %21
  %34 = getelementptr inbounds i8, ptr %0, i64 %33
  tail call void @llvm.memcpy.p0.p0.i64(ptr nonnull align 1 %34, ptr nonnull align 1 %1, i64 %21, i1 false)
  %indvars.iv.next.2 = or disjoint i64 %indvars.iv, 3
  %35 = mul nuw nsw i64 %indvars.iv.next.2, %21
  %36 = getelementptr inbounds i8, ptr %0, i64 %35
  tail call void @llvm.memcpy.p0.p0.i64(ptr nonnull align 1 %36, ptr nonnull align 1 %1, i64 %21, i1 false)
  %indvars.iv.next.3 = add nuw nsw i64 %indvars.iv, 4
  %niter.next.3 = add i64 %niter, 4
  %niter.ncmp.3 = icmp eq i64 %niter.next.3, %unroll_iter
  br i1 %niter.ncmp.3, label %._crit_edge.loopexit.unr-lcssa, label %28, !llvm.loop !11
}

attributes #0 = { mustprogress nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #2 = { noreturn 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 = { 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 #4 = { cold nounwind }
attributes #5 = { noreturn 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 = distinct !{!9, !10}
!10 = !{!"llvm.loop.unroll.disable"}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: GVNPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass