; LLVM IR from priyankchheda/algorithms :: _other_languages/cpp/Maths/extended_euclidean_algorithm.ll (Z12extended_gcdii)

; 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.std::tuple" = type { %"struct.std::_Tuple_impl" }
%"struct.std::_Tuple_impl" = type { %"struct.std::_Tuple_impl.0", %"struct.std::_Head_base.3" }
%"struct.std::_Tuple_impl.0" = type { %"struct.std::_Tuple_impl.1", %"struct.std::_Head_base.2" }
%"struct.std::_Tuple_impl.1" = type { %"struct.std::_Head_base" }
%"struct.std::_Head_base" = type { i32 }
%"struct.std::_Head_base.2" = type { i32 }
%"struct.std::_Head_base.3" = type { i32 }
%"class.std::tuple.4" = type { %"struct.std::_Tuple_impl.5" }
%"struct.std::_Tuple_impl.5" = type { %"struct.std::_Tuple_impl.6", %"struct.std::_Head_base.10" }
%"struct.std::_Tuple_impl.6" = type { %"struct.std::_Tuple_impl.7", %"struct.std::_Head_base.9" }
%"struct.std::_Tuple_impl.7" = type { %"struct.std::_Head_base.8" }
%"struct.std::_Head_base.8" = type { ptr }
%"struct.std::_Head_base.9" = type { ptr }
%"struct.std::_Head_base.10" = type { ptr }

; Function Attrs: mustprogress uwtable
define dso_local void @_Z12extended_gcdii(ptr dead_on_unwind noalias writable sret(%"class.std::tuple") align 4 %0, i32 noundef %1, i32 noundef %2) #0 {
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  %10 = alloca i32, align 4
  %11 = alloca i32, align 4
  %12 = alloca %"class.std::tuple", align 4
  %13 = alloca %"class.std::tuple.4", align 8
  %14 = alloca i32, align 4
  store ptr %0, ptr %4, align 8
  store i32 %1, ptr %5, align 4, !tbaa !5
  store i32 %2, ptr %6, align 4, !tbaa !5
  %15 = load i32, ptr %5, align 4, !tbaa !5
  %16 = icmp eq i32 %15, 0
  br i1 %16, label %17, label %18

17:                                               ; preds = %3
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #3
  store i32 0, ptr %7, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #3
  store i32 1, ptr %8, align 4, !tbaa !5
  call void @_ZSt10make_tupleIJRiiiEESt5tupleIJDpNSt25__strip_reference_wrapperINSt5decayIT_E4typeEE6__typeEEEDpOS4_(ptr dead_on_unwind writable sret(%"class.std::tuple") align 4 %0, ptr noundef nonnull align 4 dereferenceable(4) %6, ptr noundef nonnull align 4 dereferenceable(4) %7, ptr noundef nonnull align 4 dereferenceable(4) %8)
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #3
  br label %31

18:                                               ; preds = %3
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr %11) #3
  call void @llvm.lifetime.start.p0(i64 12, ptr %12) #3
  %19 = load i32, ptr %6, align 4, !tbaa !5
  %20 = load i32, ptr %5, align 4, !tbaa !5
  %21 = srem i32 %19, %20
  %22 = load i32, ptr %5, align 4, !tbaa !5
  call void @_Z12extended_gcdii(ptr dead_on_unwind writable sret(%"class.std::tuple") align 4 %12, i32 noundef %21, i32 noundef %22)
  call void @llvm.lifetime.start.p0(i64 24, ptr %13) #3
  call void @_ZSt3tieIJiiiEESt5tupleIJDpRT_EES3_(ptr dead_on_unwind writable sret(%"class.std::tuple.4") align 8 %13, ptr noundef nonnull align 4 dereferenceable(4) %9, ptr noundef nonnull align 4 dereferenceable(4) %10, ptr noundef nonnull align 4 dereferenceable(4) %11) #3
  %23 = call noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt5tupleIJRiS0_S0_EEaSIJiiiEEENSt9enable_ifIXcl12__assignableIDpT_EEERS1_E4typeEOS_IJS5_EE(ptr noundef nonnull align 8 dereferenceable(24) %13, ptr noundef nonnull align 4 dereferenceable(12) %12) #3
  call void @llvm.lifetime.end.p0(i64 24, ptr %13) #3
  call void @llvm.lifetime.end.p0(i64 12, ptr %12) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr %14) #3
  %24 = load i32, ptr %11, align 4, !tbaa !5
  %25 = load i32, ptr %6, align 4, !tbaa !5
  %26 = load i32, ptr %5, align 4, !tbaa !5
  %27 = sdiv i32 %25, %26
  %28 = load i32, ptr %10, align 4, !tbaa !5
  %29 = mul nsw i32 %27, %28
  %30 = sub nsw i32 %24, %29
  store i32 %30, ptr %14, align 4, !tbaa !5
  call void @_ZSt10make_tupleIJRiiS0_EESt5tupleIJDpNSt25__strip_reference_wrapperINSt5decayIT_E4typeEE6__typeEEEDpOS4_(ptr dead_on_unwind writable sret(%"class.std::tuple") align 4 %0, ptr noundef nonnull align 4 dereferenceable(4) %9, ptr noundef nonnull align 4 dereferenceable(4) %14, ptr noundef nonnull align 4 dereferenceable(4) %10)
  call void @llvm.lifetime.end.p0(i64 4, ptr %14) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #3
  br label %31

31:                                               ; preds = %18, %17
  ret void
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZSt10make_tupleIJRiiiEESt5tupleIJDpNSt25__strip_reference_wrapperINSt5decayIT_E4typeEE6__typeEEEDpOS4_(ptr dead_on_unwind noalias writable sret(%"class.std::tuple") align 4, ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZSt3tieIJiiiEESt5tupleIJDpRT_EES3_(ptr dead_on_unwind noalias writable sret(%"class.std::tuple.4") align 8, ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt5tupleIJRiS0_S0_EEaSIJiiiEEENSt9enable_ifIXcl12__assignableIDpT_EEERS1_E4typeEOS_IJS5_EE(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 4 dereferenceable(12)) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZSt10make_tupleIJRiiS0_EESt5tupleIJDpNSt25__strip_reference_wrapperINSt5decayIT_E4typeEE6__typeEEEDpOS4_(ptr dead_on_unwind noalias writable sret(%"class.std::tuple") align 4, ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) #1

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 = { 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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}


; 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"

%"class.std::tuple" = type { %"struct.std::_Tuple_impl" }
%"struct.std::_Tuple_impl" = type { %"struct.std::_Tuple_impl.0", %"struct.std::_Head_base.3" }
%"struct.std::_Tuple_impl.0" = type { %"struct.std::_Tuple_impl.1", %"struct.std::_Head_base.2" }
%"struct.std::_Tuple_impl.1" = type { %"struct.std::_Head_base" }
%"struct.std::_Head_base" = type { i32 }
%"struct.std::_Head_base.2" = type { i32 }
%"struct.std::_Head_base.3" = type { i32 }
%"class.std::tuple.4" = type { %"struct.std::_Tuple_impl.5" }
%"struct.std::_Tuple_impl.5" = type { %"struct.std::_Tuple_impl.6", %"struct.std::_Head_base.10" }
%"struct.std::_Tuple_impl.6" = type { %"struct.std::_Tuple_impl.7", %"struct.std::_Head_base.9" }
%"struct.std::_Tuple_impl.7" = type { %"struct.std::_Head_base.8" }
%"struct.std::_Head_base.8" = type { ptr }
%"struct.std::_Head_base.9" = type { ptr }
%"struct.std::_Head_base.10" = type { ptr }

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_Z12extended_gcdii(ptr dead_on_unwind noalias writable sret(%"class.std::tuple") align 4 %0, i32 noundef %1, i32 noundef %2) local_unnamed_addr #0 {
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  %10 = alloca %"class.std::tuple", align 4
  %11 = alloca %"class.std::tuple.4", align 8
  %12 = alloca i32, align 4
  store i32 %2, ptr %4, align 4, !tbaa !5
  %13 = icmp eq i32 %1, 0
  br i1 %13, label %14, label %15

14:                                               ; preds = %3
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %5) #2
  store i32 0, ptr %5, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %6) #2
  store i32 1, ptr %6, align 4, !tbaa !5
  call void @_ZSt10make_tupleIJRiiiEESt5tupleIJDpNSt25__strip_reference_wrapperINSt5decayIT_E4typeEE6__typeEEEDpOS4_(ptr dead_on_unwind writable sret(%"class.std::tuple") align 4 %0, ptr noundef nonnull align 4 dereferenceable(4) %4, ptr noundef nonnull align 4 dereferenceable(4) %5, ptr noundef nonnull align 4 dereferenceable(4) %6)
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %6) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %5) #2
  br label %23

15:                                               ; preds = %3
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %7) #2
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %8) #2
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %9) #2
  call void @llvm.lifetime.start.p0(i64 12, ptr nonnull %10) #2
  %16 = srem i32 %2, %1
  call void @_Z12extended_gcdii(ptr dead_on_unwind nonnull writable sret(%"class.std::tuple") align 4 %10, i32 noundef %16, i32 noundef %1)
  call void @llvm.lifetime.start.p0(i64 24, ptr nonnull %11) #2
  call void @_ZSt3tieIJiiiEESt5tupleIJDpRT_EES3_(ptr dead_on_unwind nonnull writable sret(%"class.std::tuple.4") align 8 %11, ptr noundef nonnull align 4 dereferenceable(4) %7, ptr noundef nonnull align 4 dereferenceable(4) %8, ptr noundef nonnull align 4 dereferenceable(4) %9) #2
  %17 = call noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt5tupleIJRiS0_S0_EEaSIJiiiEEENSt9enable_ifIXcl12__assignableIDpT_EEERS1_E4typeEOS_IJS5_EE(ptr noundef nonnull align 8 dereferenceable(24) %11, ptr noundef nonnull align 4 dereferenceable(12) %10) #2
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %11) #2
  call void @llvm.lifetime.end.p0(i64 12, ptr nonnull %10) #2
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %12) #2
  %18 = load i32, ptr %9, align 4, !tbaa !5
  %19 = sdiv i32 %2, %1
  %20 = load i32, ptr %8, align 4, !tbaa !5
  %21 = mul nsw i32 %20, %19
  %22 = sub nsw i32 %18, %21
  store i32 %22, ptr %12, align 4, !tbaa !5
  call void @_ZSt10make_tupleIJRiiS0_EESt5tupleIJDpNSt25__strip_reference_wrapperINSt5decayIT_E4typeEE6__typeEEEDpOS4_(ptr dead_on_unwind writable sret(%"class.std::tuple") align 4 %0, ptr noundef nonnull align 4 dereferenceable(4) %7, ptr noundef nonnull align 4 dereferenceable(4) %12, ptr noundef nonnull align 4 dereferenceable(4) %8)
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %12) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %9) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %8) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %7) #2
  br label %23

23:                                               ; preds = %15, %14
  ret void
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZSt10make_tupleIJRiiiEESt5tupleIJDpNSt25__strip_reference_wrapperINSt5decayIT_E4typeEE6__typeEEEDpOS4_(ptr dead_on_unwind noalias writable sret(%"class.std::tuple") align 4, ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #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: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZSt3tieIJiiiEESt5tupleIJDpRT_EES3_(ptr dead_on_unwind noalias writable sret(%"class.std::tuple.4") align 8, ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #0

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt5tupleIJRiS0_S0_EEaSIJiiiEEENSt9enable_ifIXcl12__assignableIDpT_EEERS1_E4typeEOS_IJS5_EE(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 4 dereferenceable(12)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZSt10make_tupleIJRiiS0_EESt5tupleIJDpNSt25__strip_reference_wrapperINSt5decayIT_E4typeEE6__typeEEEDpOS4_(ptr dead_on_unwind noalias writable sret(%"class.std::tuple") align 4, ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #0

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 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}


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