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

; 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.primesieve_iterator = type { i64, i64, i64, i64, ptr, ptr, i32 }

@.str = external hidden unnamed_addr constant [24 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [65 x i8], align 1

; Function Attrs: nounwind uwtable
define dso_local i32 @main(i32 noundef %0, ptr noundef %1) #0 {
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  %6 = alloca i64, align 8
  %7 = alloca %struct.primesieve_iterator, align 8
  %8 = alloca i64, align 8
  %9 = alloca i64, align 8
  store i32 0, ptr %3, align 4
  store i32 %0, ptr %4, align 4, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #5
  store i64 10000000000, ptr %6, align 8, !tbaa !11
  %10 = load i32, ptr %4, align 4, !tbaa !5
  %11 = icmp sgt i32 %10, 1
  br i1 %11, label %12, label %17

12:                                               ; preds = %2
  %13 = load ptr, ptr %5, align 8, !tbaa !9
  %14 = getelementptr inbounds ptr, ptr %13, i64 1
  %15 = load ptr, ptr %14, align 8, !tbaa !9
  %16 = call i64 @atol(ptr noundef %15) #6
  store i64 %16, ptr %6, align 8, !tbaa !11
  br label %17

17:                                               ; preds = %12, %2
  call void @llvm.lifetime.start.p0(i64 56, ptr %7) #5
  call void @primesieve_init(ptr noundef %7)
  %18 = load i64, ptr %6, align 8, !tbaa !11
  call void @primesieve_jump_to(ptr noundef %7, i64 noundef %18, i64 noundef 0)
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #5
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #5
  store i64 0, ptr %9, align 8, !tbaa !11
  br label %19

19:                                               ; preds = %22, %17
  %20 = call i64 @primesieve_prev_prime(ptr noundef %7)
  store i64 %20, ptr %8, align 8, !tbaa !11
  %21 = icmp ugt i64 %20, 0
  br i1 %21, label %22, label %26

22:                                               ; preds = %19
  %23 = load i64, ptr %8, align 8, !tbaa !11
  %24 = load i64, ptr %9, align 8, !tbaa !11
  %25 = add i64 %24, %23
  store i64 %25, ptr %9, align 8, !tbaa !11
  br label %19, !llvm.loop !13

26:                                               ; preds = %19
  call void @primesieve_free_iterator(ptr noundef %7)
  %27 = load i64, ptr %9, align 8, !tbaa !11
  %28 = call i32 (ptr, ...) @printf(ptr noundef @.str, i64 noundef %27)
  %29 = load i64, ptr %6, align 8, !tbaa !11
  %30 = icmp ugt i64 %29, 10000000000
  br i1 %30, label %31, label %33

31:                                               ; preds = %26
  %32 = call i32 (ptr, ...) @printf(ptr noundef @.str.1)
  br label %33

33:                                               ; preds = %31, %26
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #5
  call void @llvm.lifetime.end.p0(i64 56, ptr %7) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #5
  ret i32 0
}

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

; Function Attrs: inlinehint nounwind willreturn memory(read) uwtable
declare i64 @atol(ptr noundef nonnull) #2

declare void @primesieve_init(ptr noundef) #3

declare void @primesieve_jump_to(ptr noundef, i64 noundef, i64 noundef) #3

; Function Attrs: inlinehint nounwind uwtable
declare hidden i64 @primesieve_prev_prime(ptr noundef) #4

declare void @primesieve_free_iterator(ptr noundef) #3

declare i32 @printf(ptr noundef, ...) #3

; 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 = { inlinehint nounwind willreturn memory(read) 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 = { "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 = { 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 #5 = { nounwind }
attributes #6 = { nounwind willreturn memory(read) }

!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, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"long", !7, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"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"

%struct.primesieve_iterator = type { i64, i64, i64, i64, ptr, ptr, i32 }

@.str = external hidden unnamed_addr constant [24 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [65 x i8], align 1

; Function Attrs: nounwind uwtable
define dso_local noundef i32 @main(i32 noundef %0, ptr nocapture noundef readonly %1) local_unnamed_addr #0 {
  %3 = alloca %struct.primesieve_iterator, align 8
  %4 = icmp sgt i32 %0, 1
  br i1 %4, label %5, label %9

5:                                                ; preds = %2
  %6 = getelementptr inbounds i8, ptr %1, i64 8
  %7 = load ptr, ptr %6, align 8, !tbaa !5
  %8 = tail call i64 @atol(ptr nocapture noundef %7) #6
  br label %9

9:                                                ; preds = %5, %2
  %.06 = phi i64 [ %8, %5 ], [ 10000000000, %2 ]
  call void @llvm.lifetime.start.p0(i64 56, ptr nonnull %3) #7
  call void @primesieve_init(ptr noundef nonnull %3) #7
  call void @primesieve_jump_to(ptr noundef nonnull %3, i64 noundef %.06, i64 noundef 0) #7
  br label %10

10:                                               ; preds = %10, %9
  %.0 = phi i64 [ 0, %9 ], [ %12, %10 ]
  %11 = call i64 @primesieve_prev_prime(ptr noundef nonnull %3)
  %.not = icmp eq i64 %11, 0
  %12 = add i64 %11, %.0
  br i1 %.not, label %13, label %10, !llvm.loop !9

13:                                               ; preds = %10
  call void @primesieve_free_iterator(ptr noundef nonnull %3) #7
  %14 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str, i64 noundef %.0)
  %15 = icmp ugt i64 %.06, 10000000000
  br i1 %15, label %16, label %18

16:                                               ; preds = %13
  %17 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1)
  br label %18

18:                                               ; preds = %16, %13
  call void @llvm.lifetime.end.p0(i64 56, ptr nonnull %3) #7
  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

; Function Attrs: inlinehint mustprogress nofree nounwind willreturn memory(read) uwtable
declare i64 @atol(ptr nocapture noundef nonnull) local_unnamed_addr #2

declare void @primesieve_init(ptr noundef) local_unnamed_addr #3

declare void @primesieve_jump_to(ptr noundef, i64 noundef, i64 noundef) local_unnamed_addr #3

; Function Attrs: inlinehint nounwind uwtable
declare hidden i64 @primesieve_prev_prime(ptr noundef) local_unnamed_addr #4

declare void @primesieve_free_iterator(ptr noundef) local_unnamed_addr #3

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #5

; 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 = { inlinehint mustprogress nofree nounwind willreturn memory(read) 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 = { "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 = { 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 #5 = { 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 #6 = { nounwind willreturn memory(read) }
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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,LCSSAPass,LoopRotatePass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,TailCallElimPass