; LLVM IR from ravireddy07/cpp-book :: src/Code-Chef/JAN2021-Long/CURMAT.ll (Z5buildii)

; 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.Node = type { %"class.std::vector", [2 x ptr] }
%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl" }
%"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl" = type { %"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl_data" }
%"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl_data" = type { ptr, ptr, ptr }

; 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 ptr @_Z5buildii(i32 noundef %0, i32 noundef %1) #1 personality ptr @__gxx_personality_v0 {
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  store i32 %0, ptr %3, align 4, !tbaa !5
  store i32 %1, ptr %4, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #5
  %9 = call noalias noundef nonnull ptr @_Znwm(i64 noundef 40) #6
  invoke void @_ZN4NodeC2Ev(ptr noundef nonnull align 8 dereferenceable(40) %9)
          to label %10 unwind label %32

10:                                               ; preds = %2
  store ptr %9, ptr %5, align 8, !tbaa !9
  %11 = load i32, ptr %3, align 4, !tbaa !5
  %12 = add nsw i32 %11, 1
  %13 = load i32, ptr %4, align 4, !tbaa !5
  %14 = icmp slt i32 %12, %13
  br i1 %14, label %15, label %36

15:                                               ; preds = %10
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #5
  %16 = load i32, ptr %3, align 4, !tbaa !5
  %17 = load i32, ptr %4, align 4, !tbaa !5
  %18 = add nsw i32 %16, %17
  %19 = ashr i32 %18, 1
  store i32 %19, ptr %8, align 4, !tbaa !5
  %20 = load i32, ptr %3, align 4, !tbaa !5
  %21 = load i32, ptr %8, align 4, !tbaa !5
  %22 = call noundef ptr @_Z5buildii(i32 noundef %20, i32 noundef %21)
  %23 = load ptr, ptr %5, align 8, !tbaa !9
  %24 = getelementptr inbounds %struct.Node, ptr %23, i32 0, i32 1
  %25 = getelementptr inbounds [2 x ptr], ptr %24, i64 0, i64 0
  store ptr %22, ptr %25, align 8, !tbaa !9
  %26 = load i32, ptr %8, align 4, !tbaa !5
  %27 = load i32, ptr %4, align 4, !tbaa !5
  %28 = call noundef ptr @_Z5buildii(i32 noundef %26, i32 noundef %27)
  %29 = load ptr, ptr %5, align 8, !tbaa !9
  %30 = getelementptr inbounds %struct.Node, ptr %29, i32 0, i32 1
  %31 = getelementptr inbounds [2 x ptr], ptr %30, i64 0, i64 1
  store ptr %28, ptr %31, align 8, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #5
  br label %36

32:                                               ; preds = %2
  %33 = landingpad { ptr, i32 }
          cleanup
  %34 = extractvalue { ptr, i32 } %33, 0
  store ptr %34, ptr %6, align 8
  %35 = extractvalue { ptr, i32 } %33, 1
  store i32 %35, ptr %7, align 4
  call void @_ZdlPvm(ptr noundef %9, i64 noundef 40) #7
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #5
  br label %38

36:                                               ; preds = %15, %10
  %37 = load ptr, ptr %5, align 8, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #5
  ret ptr %37

38:                                               ; preds = %32
  %39 = load ptr, ptr %6, align 8
  %40 = load i32, ptr %7, align 4
  %41 = insertvalue { ptr, i32 } poison, ptr %39, 0
  %42 = insertvalue { ptr, i32 } %41, i32 %40, 1
  resume { ptr, i32 } %42
}

; Function Attrs: nobuiltin allocsize(0)
declare noundef nonnull ptr @_Znwm(i64 noundef) #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN4NodeC2Ev(ptr noundef nonnull align 8 dereferenceable(40)) unnamed_addr #3 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: nobuiltin nounwind
declare void @_ZdlPvm(ptr noundef, i64 noundef) #4

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 = { nobuiltin allocsize(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 = { 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 #4 = { nobuiltin 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 #5 = { nounwind }
attributes #6 = { builtin allocsize(0) }
attributes #7 = { builtin 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !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 uwtable
define dso_local noundef nonnull ptr @_Z5buildii(i32 noundef %0, i32 noundef %1) local_unnamed_addr #0 personality ptr @__gxx_personality_v0 {
  %3 = tail call noalias noundef nonnull dereferenceable(40) ptr @_Znwm(i64 noundef 40) #3
  tail call void @_ZN4NodeC2Ev(ptr noundef nonnull align 8 dereferenceable(40) %3)
  %4 = add nsw i32 %0, 1
  %5 = icmp slt i32 %4, %1
  br i1 %5, label %6, label %common.ret10

common.ret10:                                     ; preds = %2, %6
  ret ptr %3

6:                                                ; preds = %2
  %7 = add nsw i32 %1, %0
  %8 = ashr i32 %7, 1
  %9 = tail call noundef ptr @_Z5buildii(i32 noundef %0, i32 noundef %8)
  %10 = getelementptr inbounds i8, ptr %3, i64 24
  store ptr %9, ptr %10, align 8, !tbaa !5
  %11 = tail call noundef ptr @_Z5buildii(i32 noundef %8, i32 noundef %1)
  %12 = getelementptr inbounds i8, ptr %3, i64 32
  store ptr %11, ptr %12, align 8, !tbaa !5
  br label %common.ret10
}

; Function Attrs: nobuiltin allocsize(0)
declare noundef nonnull ptr @_Znwm(i64 noundef) local_unnamed_addr #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN4NodeC2Ev(ptr noundef nonnull align 8 dereferenceable(40)) unnamed_addr #2 align 2

declare i32 @__gxx_personality_v0(...)

attributes #0 = { 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 #1 = { nobuiltin allocsize(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 = { 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 = { builtin allocsize(0) }

!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"}


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