; LLVM IR from JanaSabuj/cppdump :: Old/DS/STUpdate.ll (Z2btPxS_xxx)

; 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 void @_Z2btPxS_xxx(ptr noundef %0, ptr noundef %1, i64 noundef %2, i64 noundef %3, i64 noundef %4) #0 {
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  %8 = alloca i64, align 8
  %9 = alloca i64, align 8
  %10 = alloca i64, align 8
  %11 = alloca i64, align 8
  store ptr %0, ptr %6, align 8, !tbaa !5
  store ptr %1, ptr %7, align 8, !tbaa !5
  store i64 %2, ptr %8, align 8, !tbaa !9
  store i64 %3, ptr %9, align 8, !tbaa !9
  store i64 %4, ptr %10, align 8, !tbaa !9
  %12 = load i64, ptr %8, align 8, !tbaa !9
  %13 = load i64, ptr %9, align 8, !tbaa !9
  %14 = icmp eq i64 %12, %13
  br i1 %14, label %15, label %23

15:                                               ; preds = %5
  %16 = load ptr, ptr %6, align 8, !tbaa !5
  %17 = load i64, ptr %8, align 8, !tbaa !9
  %18 = getelementptr inbounds i64, ptr %16, i64 %17
  %19 = load i64, ptr %18, align 8, !tbaa !9
  %20 = load ptr, ptr %7, align 8, !tbaa !5
  %21 = load i64, ptr %10, align 8, !tbaa !9
  %22 = getelementptr inbounds i64, ptr %20, i64 %21
  store i64 %19, ptr %22, align 8, !tbaa !9
  br label %57

23:                                               ; preds = %5
  call void @llvm.lifetime.start.p0(i64 8, ptr %11) #2
  %24 = load i64, ptr %8, align 8, !tbaa !9
  %25 = load i64, ptr %9, align 8, !tbaa !9
  %26 = add nsw i64 %24, %25
  %27 = sdiv i64 %26, 2
  store i64 %27, ptr %11, align 8, !tbaa !9
  %28 = load ptr, ptr %6, align 8, !tbaa !5
  %29 = load ptr, ptr %7, align 8, !tbaa !5
  %30 = load i64, ptr %8, align 8, !tbaa !9
  %31 = load i64, ptr %11, align 8, !tbaa !9
  %32 = load i64, ptr %10, align 8, !tbaa !9
  %33 = mul nsw i64 2, %32
  call void @_Z2btPxS_xxx(ptr noundef %28, ptr noundef %29, i64 noundef %30, i64 noundef %31, i64 noundef %33)
  %34 = load ptr, ptr %6, align 8, !tbaa !5
  %35 = load ptr, ptr %7, align 8, !tbaa !5
  %36 = load i64, ptr %11, align 8, !tbaa !9
  %37 = add nsw i64 %36, 1
  %38 = load i64, ptr %9, align 8, !tbaa !9
  %39 = load i64, ptr %10, align 8, !tbaa !9
  %40 = mul nsw i64 2, %39
  %41 = add nsw i64 %40, 1
  call void @_Z2btPxS_xxx(ptr noundef %34, ptr noundef %35, i64 noundef %37, i64 noundef %38, i64 noundef %41)
  %42 = load ptr, ptr %7, align 8, !tbaa !5
  %43 = load i64, ptr %10, align 8, !tbaa !9
  %44 = mul nsw i64 2, %43
  %45 = getelementptr inbounds i64, ptr %42, i64 %44
  %46 = load i64, ptr %45, align 8, !tbaa !9
  %47 = load ptr, ptr %7, align 8, !tbaa !5
  %48 = load i64, ptr %10, align 8, !tbaa !9
  %49 = mul nsw i64 2, %48
  %50 = add nsw i64 %49, 1
  %51 = getelementptr inbounds i64, ptr %47, i64 %50
  %52 = load i64, ptr %51, align 8, !tbaa !9
  %53 = add nsw i64 %46, %52
  %54 = load ptr, ptr %7, align 8, !tbaa !5
  %55 = load i64, ptr %10, align 8, !tbaa !9
  %56 = getelementptr inbounds i64, ptr %54, i64 %55
  store i64 %53, ptr %56, align 8, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 8, ptr %11) #2
  br label %57

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

; 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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"long long", !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: readwrite) uwtable
define dso_local void @_Z2btPxS_xxx(ptr noundef %0, ptr noundef %1, i64 noundef %2, i64 noundef %3, i64 noundef %4) local_unnamed_addr #0 {
  %6 = icmp eq i64 %2, %3
  br i1 %6, label %7, label %11

7:                                                ; preds = %5
  %8 = getelementptr inbounds i64, ptr %0, i64 %2
  %9 = load i64, ptr %8, align 8, !tbaa !5
  br label %common.ret

common.ret:                                       ; preds = %7, %11
  %.sink = phi i64 [ %9, %7 ], [ %21, %11 ]
  %10 = getelementptr inbounds i64, ptr %1, i64 %4
  store i64 %.sink, ptr %10, align 8
  ret void

11:                                               ; preds = %5
  %12 = add nsw i64 %3, %2
  %13 = sdiv i64 %12, 2
  %14 = shl nsw i64 %4, 1
  tail call void @_Z2btPxS_xxx(ptr noundef %0, ptr noundef %1, i64 noundef %2, i64 noundef %13, i64 noundef %14)
  %15 = add nsw i64 %13, 1
  %16 = or disjoint i64 %14, 1
  tail call void @_Z2btPxS_xxx(ptr noundef %0, ptr noundef %1, i64 noundef %15, i64 noundef %3, i64 noundef %16)
  %17 = getelementptr inbounds i64, ptr %1, i64 %14
  %18 = load i64, ptr %17, align 8, !tbaa !5
  %19 = getelementptr inbounds i64, ptr %1, i64 %16
  %20 = load i64, ptr %19, align 8, !tbaa !5
  %21 = add nsw i64 %20, %18
  br label %common.ret
}

attributes #0 = { mustprogress nofree nosync nounwind memory(argmem: readwrite) 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, !6, i64 0}
!6 = !{!"long long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}


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