; LLVM IR from apple/turicreate :: src/external/boost/boost_1_68_0/libs/mpi/src (computation_tree)

; 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.boost::mpi::detail::computation_tree" = type { i32, i32, i32, i32, i32 }

; 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
define dso_local noundef i32 @_ZNK5boost3mpi6detail16computation_tree6parentEv(ptr noundef nonnull align 4 dereferenceable(20) %0) #1 align 2 {
  %2 = alloca i32, align 4
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  %5 = load ptr, ptr %3, align 8
  %6 = getelementptr inbounds %"class.boost::mpi::detail::computation_tree", ptr %5, i32 0, i32 0
  %7 = load i32, ptr %6, align 4, !tbaa !9
  %8 = getelementptr inbounds %"class.boost::mpi::detail::computation_tree", ptr %5, i32 0, i32 2
  %9 = load i32, ptr %8, align 4, !tbaa !12
  %10 = icmp eq i32 %7, %9
  br i1 %10, label %11, label %14

11:                                               ; preds = %1
  %12 = getelementptr inbounds %"class.boost::mpi::detail::computation_tree", ptr %5, i32 0, i32 0
  %13 = load i32, ptr %12, align 4, !tbaa !9
  store i32 %13, ptr %2, align 4
  br label %37

14:                                               ; preds = %1
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #2
  %15 = getelementptr inbounds %"class.boost::mpi::detail::computation_tree", ptr %5, i32 0, i32 0
  %16 = load i32, ptr %15, align 4, !tbaa !9
  %17 = getelementptr inbounds %"class.boost::mpi::detail::computation_tree", ptr %5, i32 0, i32 1
  %18 = load i32, ptr %17, align 4, !tbaa !13
  %19 = add nsw i32 %16, %18
  %20 = sub nsw i32 %19, 1
  %21 = getelementptr inbounds %"class.boost::mpi::detail::computation_tree", ptr %5, i32 0, i32 2
  %22 = load i32, ptr %21, align 4, !tbaa !12
  %23 = sub nsw i32 %20, %22
  store i32 %23, ptr %4, align 4, !tbaa !14
  %24 = load i32, ptr %4, align 4, !tbaa !14
  %25 = getelementptr inbounds %"class.boost::mpi::detail::computation_tree", ptr %5, i32 0, i32 1
  %26 = load i32, ptr %25, align 4, !tbaa !13
  %27 = srem i32 %24, %26
  %28 = getelementptr inbounds %"class.boost::mpi::detail::computation_tree", ptr %5, i32 0, i32 3
  %29 = load i32, ptr %28, align 4, !tbaa !15
  %30 = sdiv i32 %27, %29
  %31 = getelementptr inbounds %"class.boost::mpi::detail::computation_tree", ptr %5, i32 0, i32 2
  %32 = load i32, ptr %31, align 4, !tbaa !12
  %33 = add nsw i32 %30, %32
  %34 = getelementptr inbounds %"class.boost::mpi::detail::computation_tree", ptr %5, i32 0, i32 1
  %35 = load i32, ptr %34, align 4, !tbaa !13
  %36 = srem i32 %33, %35
  store i32 %36, ptr %2, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #2
  br label %37

37:                                               ; preds = %14, %11
  %38 = load i32, ptr %2, align 4
  ret i32 %38
}

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 = { 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, !11, i64 0}
!10 = !{!"_ZTSN5boost3mpi6detail16computation_treeE", !11, i64 0, !11, i64 4, !11, i64 8, !11, i64 12, !11, i64 16}
!11 = !{!"int", !7, i64 0}
!12 = !{!10, !11, i64 8}
!13 = !{!10, !11, i64 4}
!14 = !{!11, !11, i64 0}
!15 = !{!10, !11, i64 12}


; 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 nofree norecurse nosync nounwind willreturn memory(argmem: read) uwtable
define dso_local noundef i32 @_ZNK5boost3mpi6detail16computation_tree6parentEv(ptr nocapture noundef nonnull readonly align 4 dereferenceable(20) %0) local_unnamed_addr #0 align 2 {
  %2 = load i32, ptr %0, align 4, !tbaa !5
  %3 = getelementptr inbounds i8, ptr %0, i64 8
  %4 = load i32, ptr %3, align 4, !tbaa !10
  %5 = icmp eq i32 %2, %4
  br i1 %5, label %18, label %6

6:                                                ; preds = %1
  %7 = getelementptr inbounds i8, ptr %0, i64 4
  %8 = load i32, ptr %7, align 4, !tbaa !11
  %9 = xor i32 %4, -1
  %10 = add i32 %2, %9
  %11 = add i32 %10, %8
  %12 = srem i32 %11, %8
  %13 = getelementptr inbounds i8, ptr %0, i64 12
  %14 = load i32, ptr %13, align 4, !tbaa !12
  %15 = sdiv i32 %12, %14
  %16 = add nsw i32 %15, %4
  %17 = srem i32 %16, %8
  br label %18

18:                                               ; preds = %1, %6
  %.0 = phi i32 [ %17, %6 ], [ %2, %1 ]
  ret i32 %.0
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: 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" }

!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 0}
!6 = !{!"_ZTSN5boost3mpi6detail16computation_treeE", !7, i64 0, !7, i64 4, !7, i64 8, !7, i64 12, !7, i64 16}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!6, !7, i64 8}
!11 = !{!6, !7, i64 4}
!12 = !{!6, !7, i64 12}


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