; LLVM IR from ncduy0303/Competitive-Programming :: Mathematics/GCD.ll (Z3gcdxxRxS_)

; 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"

; Function Attrs: mustprogress uwtable
define dso_local noundef i64 @_Z3gcdxxRxS_(i64 noundef %0, i64 noundef %1, ptr noundef nonnull align 8 dereferenceable(8) %2, ptr noundef nonnull align 8 dereferenceable(8) %3) #0 {
  %5 = alloca i64, align 8
  %6 = alloca i64, align 8
  %7 = alloca i64, align 8
  %8 = alloca ptr, align 8
  %9 = alloca ptr, align 8
  %10 = alloca i64, align 8
  %11 = alloca i64, align 8
  %12 = alloca i64, align 8
  store i64 %0, ptr %6, align 8, !tbaa !5
  store i64 %1, ptr %7, align 8, !tbaa !5
  store ptr %2, ptr %8, align 8, !tbaa !9
  store ptr %3, ptr %9, align 8, !tbaa !9
  %13 = load i64, ptr %7, align 8, !tbaa !5
  %14 = icmp eq i64 %13, 0
  br i1 %14, label %15, label %19

15:                                               ; preds = %4
  %16 = load ptr, ptr %8, align 8, !tbaa !9
  store i64 1, ptr %16, align 8, !tbaa !5
  %17 = load ptr, ptr %9, align 8, !tbaa !9
  store i64 0, ptr %17, align 8, !tbaa !5
  %18 = load i64, ptr %6, align 8, !tbaa !5
  store i64 %18, ptr %5, align 8
  br label %36

19:                                               ; preds = %4
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #2
  call void @llvm.lifetime.start.p0(i64 8, ptr %11) #2
  call void @llvm.lifetime.start.p0(i64 8, ptr %12) #2
  %20 = load i64, ptr %7, align 8, !tbaa !5
  %21 = load i64, ptr %6, align 8, !tbaa !5
  %22 = load i64, ptr %7, align 8, !tbaa !5
  %23 = srem i64 %21, %22
  %24 = call noundef i64 @_Z3gcdxxRxS_(i64 noundef %20, i64 noundef %23, ptr noundef nonnull align 8 dereferenceable(8) %10, ptr noundef nonnull align 8 dereferenceable(8) %11)
  store i64 %24, ptr %12, align 8, !tbaa !5
  %25 = load i64, ptr %11, align 8, !tbaa !5
  %26 = load ptr, ptr %8, align 8, !tbaa !9
  store i64 %25, ptr %26, align 8, !tbaa !5
  %27 = load i64, ptr %10, align 8, !tbaa !5
  %28 = load i64, ptr %11, align 8, !tbaa !5
  %29 = load i64, ptr %6, align 8, !tbaa !5
  %30 = load i64, ptr %7, align 8, !tbaa !5
  %31 = sdiv i64 %29, %30
  %32 = mul nsw i64 %28, %31
  %33 = sub nsw i64 %27, %32
  %34 = load ptr, ptr %9, align 8, !tbaa !9
  store i64 %33, ptr %34, align 8, !tbaa !5
  %35 = load i64, ptr %12, align 8, !tbaa !5
  store i64 %35, ptr %5, align 8
  call void @llvm.lifetime.end.p0(i64 8, ptr %12) #2
  call void @llvm.lifetime.end.p0(i64 8, ptr %11) #2
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #2
  br label %36

36:                                               ; preds = %19, %15
  %37 = load i64, ptr %5, align 8
  ret i64 %37
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #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 = { 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 = !{!"long long", !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 nofree nosync nounwind memory(argmem: write) uwtable
define dso_local noundef i64 @_Z3gcdxxRxS_(i64 noundef %0, i64 noundef %1, ptr nocapture noundef nonnull writeonly align 8 dereferenceable(8) %2, ptr nocapture noundef nonnull writeonly align 8 dereferenceable(8) %3) local_unnamed_addr #0 {
  %5 = alloca i64, align 8
  %6 = alloca i64, align 8
  %7 = icmp eq i64 %1, 0
  br i1 %7, label %16, label %8

8:                                                ; preds = %4
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %5) #2
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %6) #2
  %9 = srem i64 %0, %1
  %10 = call noundef i64 @_Z3gcdxxRxS_(i64 noundef %1, i64 noundef %9, ptr noundef nonnull align 8 dereferenceable(8) %5, ptr noundef nonnull align 8 dereferenceable(8) %6)
  %11 = load i64, ptr %6, align 8, !tbaa !5
  %12 = load i64, ptr %5, align 8, !tbaa !5
  %13 = sdiv i64 %0, %1
  %14 = mul nsw i64 %13, %11
  %15 = sub nsw i64 %12, %14
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %6) #2
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %5) #2
  br label %16

16:                                               ; preds = %4, %8
  %.sink13 = phi i64 [ %11, %8 ], [ 1, %4 ]
  %.sink = phi i64 [ %15, %8 ], [ 0, %4 ]
  %.0 = phi i64 [ %10, %8 ], [ %0, %4 ]
  store i64 %.sink13, ptr %2, align 8
  store i64 %.sink, ptr %3, align 8
  ret i64 %.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

attributes #0 = { mustprogress nofree nosync nounwind memory(argmem: write) 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 = !{!"long long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}


; Effective O3 passes: GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,MergedLoadStoreMotionPass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass