; LLVM IR from kimwalisch/primesieve :: src/ParallelSieve.ll (ZNK10primesieve13ParallelSieve5alignEm)

; 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"

%"class.primesieve::PrimeSieve" = type { ptr, i64, i64, double, double, %"class.primesieve::Array", i64, i64, i32, i32, ptr }
%"class.primesieve::Array" = type { [6 x i64] }

; 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 uwtable
define dso_local noundef i64 @_ZNK10primesieve13ParallelSieve5alignEm(ptr noundef nonnull align 8 dereferenceable(164) %0, i64 noundef %1) #1 align 2 {
  %3 = alloca i64, align 8
  %4 = alloca ptr, align 8
  %5 = alloca i64, align 8
  %6 = alloca i64, align 8
  %7 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i64 %1, ptr %5, align 8, !tbaa !9
  %8 = load ptr, ptr %4, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #3
  %9 = load i64, ptr %5, align 8, !tbaa !9
  %10 = call noundef i64 @_ZN12_GLOBAL__N_110checkedAddEmm(i64 noundef %9, i64 noundef 32)
  store i64 %10, ptr %6, align 8, !tbaa !9
  %11 = load i64, ptr %6, align 8, !tbaa !9
  %12 = getelementptr inbounds %"class.primesieve::PrimeSieve", ptr %8, i32 0, i32 2
  %13 = load i64, ptr %12, align 8, !tbaa !11
  %14 = icmp uge i64 %11, %13
  br i1 %14, label %15, label %18

15:                                               ; preds = %2
  %16 = getelementptr inbounds %"class.primesieve::PrimeSieve", ptr %8, i32 0, i32 2
  %17 = load i64, ptr %16, align 8, !tbaa !11
  store i64 %17, ptr %3, align 8
  store i32 1, ptr %7, align 4
  br label %23

18:                                               ; preds = %2
  %19 = load i64, ptr %6, align 8, !tbaa !9
  %20 = load i64, ptr %5, align 8, !tbaa !9
  %21 = urem i64 %20, 30
  %22 = sub i64 %19, %21
  store i64 %22, ptr %3, align 8
  store i32 1, ptr %7, align 4
  br label %23

23:                                               ; preds = %18, %15
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  %24 = load i64, ptr %3, align 8
  ret i64 %24
}

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare hidden noundef i64 @_ZN12_GLOBAL__N_110checkedAddEmm(i64 noundef, i64 noundef) #2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #2 = { inlinehint 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 #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 = !{!12, !10, i64 16}
!12 = !{!"_ZTSN10primesieve10PrimeSieveE", !10, i64 8, !10, i64 16, !13, i64 24, !13, i64 32, !14, i64 40, !10, i64 88, !10, i64 96, !15, i64 104, !15, i64 108, !6, i64 112}
!13 = !{!"double", !7, i64 0}
!14 = !{!"_ZTSN10primesieve5ArrayImLm6EEE", !7, i64 0}
!15 = !{!"int", !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
define dso_local noundef i64 @_ZNK10primesieve13ParallelSieve5alignEm(ptr nocapture noundef nonnull readonly align 8 dereferenceable(164) %0, i64 noundef %1) local_unnamed_addr #0 align 2 {
  %3 = tail call noundef i64 @_ZN12_GLOBAL__N_110checkedAddEmm(i64 noundef %1, i64 noundef 32)
  %4 = getelementptr inbounds i8, ptr %0, i64 16
  %5 = load i64, ptr %4, align 8, !tbaa !5
  %.not = icmp ult i64 %3, %5
  br i1 %.not, label %6, label %9

6:                                                ; preds = %2
  %7 = urem i64 %1, 30
  %8 = sub i64 %3, %7
  br label %9

9:                                                ; preds = %2, %6
  %.0 = phi i64 [ %8, %6 ], [ %5, %2 ]
  ret i64 %.0
}

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare hidden noundef i64 @_ZN12_GLOBAL__N_110checkedAddEmm(i64 noundef, i64 noundef) local_unnamed_addr #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 = { inlinehint 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" }

!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, !7, i64 16}
!6 = !{!"_ZTSN10primesieve10PrimeSieveE", !7, i64 8, !7, i64 16, !10, i64 24, !10, i64 32, !11, i64 40, !7, i64 88, !7, i64 96, !12, i64 104, !12, i64 108, !13, i64 112}
!7 = !{!"long", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"double", !8, i64 0}
!11 = !{!"_ZTSN10primesieve5ArrayImLm6EEE", !8, i64 0}
!12 = !{!"int", !8, i64 0}
!13 = !{!"any pointer", !8, i64 0}


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