; LLVM IR from kimwalisch/primesieve :: examples/c (primes_array)

; 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"

@.str = external hidden unnamed_addr constant [4 x i8], align 1

; Function Attrs: nounwind uwtable
define dso_local i32 @main() #0 {
  %1 = alloca i32, align 4
  %2 = alloca i64, align 8
  %3 = alloca i64, align 8
  %4 = alloca i64, align 8
  %5 = alloca i64, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i64, align 8
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 8, ptr %2) #3
  store i64 0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #3
  store i64 1000, ptr %3, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #3
  %8 = load i64, ptr %2, align 8, !tbaa !5
  %9 = load i64, ptr %3, align 8, !tbaa !5
  %10 = call ptr @primesieve_generate_primes(i64 noundef %8, i64 noundef %9, ptr noundef %5, i32 noundef 2)
  store ptr %10, ptr %6, align 8, !tbaa !9
  store i64 0, ptr %4, align 8, !tbaa !5
  br label %11

11:                                               ; preds = %21, %0
  %12 = load i64, ptr %4, align 8, !tbaa !5
  %13 = load i64, ptr %5, align 8, !tbaa !5
  %14 = icmp ult i64 %12, %13
  br i1 %14, label %15, label %24

15:                                               ; preds = %11
  %16 = load ptr, ptr %6, align 8, !tbaa !9
  %17 = load i64, ptr %4, align 8, !tbaa !5
  %18 = getelementptr inbounds i32, ptr %16, i64 %17
  %19 = load i32, ptr %18, align 4, !tbaa !11
  %20 = call i32 (ptr, ...) @printf(ptr noundef @.str, i32 noundef %19)
  br label %21

21:                                               ; preds = %15
  %22 = load i64, ptr %4, align 8, !tbaa !5
  %23 = add i64 %22, 1
  store i64 %23, ptr %4, align 8, !tbaa !5
  br label %11, !llvm.loop !13

24:                                               ; preds = %11
  %25 = load ptr, ptr %6, align 8, !tbaa !9
  call void @primesieve_free(ptr noundef %25)
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #3
  store i64 1000, ptr %7, align 8, !tbaa !5
  %26 = load i64, ptr %7, align 8, !tbaa !5
  %27 = load i64, ptr %2, align 8, !tbaa !5
  %28 = call ptr @primesieve_generate_n_primes(i64 noundef %26, i64 noundef %27, i32 noundef 2)
  store ptr %28, ptr %6, align 8, !tbaa !9
  store i64 0, ptr %4, align 8, !tbaa !5
  br label %29

29:                                               ; preds = %39, %24
  %30 = load i64, ptr %4, align 8, !tbaa !5
  %31 = load i64, ptr %7, align 8, !tbaa !5
  %32 = icmp ult i64 %30, %31
  br i1 %32, label %33, label %42

33:                                               ; preds = %29
  %34 = load ptr, ptr %6, align 8, !tbaa !9
  %35 = load i64, ptr %4, align 8, !tbaa !5
  %36 = getelementptr inbounds i32, ptr %34, i64 %35
  %37 = load i32, ptr %36, align 4, !tbaa !11
  %38 = call i32 (ptr, ...) @printf(ptr noundef @.str, i32 noundef %37)
  br label %39

39:                                               ; preds = %33
  %40 = load i64, ptr %4, align 8, !tbaa !5
  %41 = add i64 %40, 1
  store i64 %41, ptr %4, align 8, !tbaa !5
  br label %29, !llvm.loop !15

42:                                               ; preds = %29
  %43 = load ptr, ptr %6, align 8, !tbaa !9
  call void @primesieve_free(ptr noundef %43)
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #3
  ret i32 0
}

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

declare ptr @primesieve_generate_primes(i64 noundef, i64 noundef, ptr noundef, i32 noundef) #2

declare i32 @printf(ptr noundef, ...) #2

declare void @primesieve_free(ptr noundef) #2

declare ptr @primesieve_generate_n_primes(i64 noundef, i64 noundef, i32 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 = !{!"long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"int", !7, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}
!15 = distinct !{!15, !14}


; 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"

@.str = external hidden unnamed_addr constant [4 x i8], align 1

; Function Attrs: nounwind uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 {
  %1 = alloca i64, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %1) #4
  %2 = call ptr @primesieve_generate_primes(i64 noundef 0, i64 noundef 1000, ptr noundef nonnull %1, i32 noundef 2) #4
  %3 = load i64, ptr %1, align 8, !tbaa !5
  %.not = icmp eq i64 %3, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %0, %.lr.ph
  %.014 = phi i64 [ %7, %.lr.ph ], [ 0, %0 ]
  %4 = getelementptr inbounds i32, ptr %2, i64 %.014
  %5 = load i32, ptr %4, align 4, !tbaa !9
  %6 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str, i32 noundef %5)
  %7 = add nuw i64 %.014, 1
  %8 = load i64, ptr %1, align 8, !tbaa !5
  %9 = icmp ult i64 %7, %8
  br i1 %9, label %.lr.ph, label %._crit_edge, !llvm.loop !11

._crit_edge:                                      ; preds = %.lr.ph, %0
  call void @primesieve_free(ptr noundef %2) #4
  %10 = call ptr @primesieve_generate_n_primes(i64 noundef 1000, i64 noundef 0, i32 noundef 2) #4
  br label %11

11:                                               ; preds = %._crit_edge, %11
  %.115 = phi i64 [ 0, %._crit_edge ], [ %15, %11 ]
  %12 = getelementptr inbounds i32, ptr %10, i64 %.115
  %13 = load i32, ptr %12, align 4, !tbaa !9
  %14 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str, i32 noundef %13)
  %15 = add nuw nsw i64 %.115, 1
  %exitcond.not = icmp eq i64 %15, 1000
  br i1 %exitcond.not, label %16, label %11, !llvm.loop !13

16:                                               ; preds = %11
  call void @primesieve_free(ptr noundef nonnull %10) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %1) #4
  ret i32 0
}

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

declare ptr @primesieve_generate_primes(i64 noundef, i64 noundef, ptr noundef, i32 noundef) local_unnamed_addr #2

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #3

declare void @primesieve_free(ptr noundef) local_unnamed_addr #2

declare ptr @primesieve_generate_n_primes(i64 noundef, i64 noundef, i32 noundef) local_unnamed_addr #2

; Function Attrs: mustprogress 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 = { mustprogress 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 = { 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 #4 = { 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 = !{!"long", !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"}
!13 = distinct !{!13, !12}


; Effective O3 passes: CorrelatedValuePropagationPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass