; LLVM IR from kazunetakahashi/atcoder :: 2019/0817_AGC037/F.ll (Z12make_elementi)

; 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.Element = type { i32, i64, i64, %"class.boost::optional" }
%"class.boost::optional" = type { %"class.boost::optional_detail::tc_optional_base" }
%"class.boost::optional_detail::tc_optional_base" = type { i8, i32 }
%"struct.boost::none_t" = type { i8 }

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_Z12make_elementi(ptr dead_on_unwind noalias writable sret(%struct.Element) align 8 %0, i32 noundef %1) #0 {
  %3 = alloca i32, align 4
  %4 = alloca %"struct.boost::none_t", align 1
  store i32 %1, ptr %3, align 4, !tbaa !5
  %5 = getelementptr inbounds %struct.Element, ptr %0, i32 0, i32 0
  %6 = load i32, ptr %3, align 4, !tbaa !5
  store i32 %6, ptr %5, align 8, !tbaa !9
  %7 = getelementptr inbounds %struct.Element, ptr %0, i32 0, i32 1
  store i64 0, ptr %7, align 8, !tbaa !15
  %8 = getelementptr inbounds %struct.Element, ptr %0, i32 0, i32 2
  store i64 0, ptr %8, align 8, !tbaa !16
  %9 = getelementptr inbounds %struct.Element, ptr %0, i32 0, i32 3
  call void @_ZN5boost8optionalIiEC2ENS_6none_tE(ptr noundef nonnull align 4 dereferenceable(8) %9) #1
  ret void
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN5boost8optionalIiEC2ENS_6none_tE(ptr noundef nonnull align 4 dereferenceable(8)) unnamed_addr #0 align 2

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 = { 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, !6, i64 0}
!10 = !{!"_ZTS7Element", !6, i64 0, !11, i64 8, !11, i64 16, !12, i64 24}
!11 = !{!"long long", !7, i64 0}
!12 = !{!"_ZTSN5boost8optionalIiEE", !13, i64 0}
!13 = !{!"_ZTSN5boost15optional_detail16tc_optional_baseIiEE", !14, i64 0, !6, i64 4}
!14 = !{!"bool", !7, i64 0}
!15 = !{!10, !11, i64 8}
!16 = !{!10, !11, i64 16}


; 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.Element = type { i32, i64, i64, %"class.boost::optional" }
%"class.boost::optional" = type { %"class.boost::optional_detail::tc_optional_base" }
%"class.boost::optional_detail::tc_optional_base" = type { i8, i32 }

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_Z12make_elementi(ptr dead_on_unwind noalias writable sret(%struct.Element) align 8 %0, i32 noundef %1) local_unnamed_addr #0 {
  store i32 %1, ptr %0, align 8, !tbaa !5
  %3 = getelementptr inbounds i8, ptr %0, i64 8
  %4 = getelementptr inbounds i8, ptr %0, i64 24
  tail call void @llvm.memset.p0.i64(ptr noundef nonnull align 8 dereferenceable(16) %3, i8 0, i64 16, i1 false)
  tail call void @_ZN5boost8optionalIiEC2ENS_6none_tE(ptr noundef nonnull align 4 dereferenceable(8) %4) #2
  ret void
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN5boost8optionalIiEC2ENS_6none_tE(ptr noundef nonnull align 4 dereferenceable(8)) unnamed_addr #0 align 2

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #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 = { nocallback nofree nounwind willreturn memory(argmem: write) }
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, !7, i64 0}
!6 = !{!"_ZTS7Element", !7, i64 0, !10, i64 8, !10, i64 16, !11, i64 24}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"long long", !8, i64 0}
!11 = !{!"_ZTSN5boost8optionalIiEE", !12, i64 0}
!12 = !{!"_ZTSN5boost15optional_detail16tc_optional_baseIiEE", !13, i64 0, !7, i64 4}
!13 = !{!"bool", !8, i64 0}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,InstCombinePass,MemCpyOptPass,SROAPass,TailCallElimPass