; LLVM IR from VastoLorde95/Competitive-Programming :: SPOJ/Random/HORRIBLE/hor.ll (Z6updatePxxx)

; 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"

@n = external dso_local global i64, align 8

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_Z6updatePxxx(ptr noundef %0, i64 noundef %1, i64 noundef %2) #0 {
  %4 = alloca ptr, align 8
  %5 = alloca i64, align 8
  %6 = alloca i64, align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i64 %1, ptr %5, align 8, !tbaa !9
  store i64 %2, ptr %6, align 8, !tbaa !9
  br label %7

7:                                                ; preds = %11, %3
  %8 = load i64, ptr %5, align 8, !tbaa !9
  %9 = load i64, ptr @n, align 8, !tbaa !9
  %10 = icmp sle i64 %8, %9
  br i1 %10, label %11, label %24

11:                                               ; preds = %7
  %12 = load i64, ptr %6, align 8, !tbaa !9
  %13 = load ptr, ptr %4, align 8, !tbaa !5
  %14 = load i64, ptr %5, align 8, !tbaa !9
  %15 = getelementptr inbounds i64, ptr %13, i64 %14
  %16 = load i64, ptr %15, align 8, !tbaa !9
  %17 = add nsw i64 %16, %12
  store i64 %17, ptr %15, align 8, !tbaa !9
  %18 = load i64, ptr %5, align 8, !tbaa !9
  %19 = load i64, ptr %5, align 8, !tbaa !9
  %20 = load i64, ptr %5, align 8, !tbaa !9
  %21 = sub nsw i64 0, %20
  %22 = and i64 %19, %21
  %23 = add nsw i64 %18, %22
  store i64 %23, ptr %5, align 8, !tbaa !9
  br label %7, !llvm.loop !11

24:                                               ; preds = %7
  ret void
}

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" }

!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}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}


; 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"

@n = external dso_local local_unnamed_addr global i64, align 8

; Function Attrs: mustprogress nofree norecurse nosync nounwind memory(read, argmem: readwrite, inaccessiblemem: none) uwtable
define dso_local void @_Z6updatePxxx(ptr nocapture noundef %0, i64 noundef %1, i64 noundef %2) local_unnamed_addr #0 {
  %4 = load i64, ptr @n, align 8, !tbaa !5
  %.not6 = icmp slt i64 %4, %1
  br i1 %.not6, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %3, %.lr.ph
  %.07 = phi i64 [ %10, %.lr.ph ], [ %1, %3 ]
  %5 = getelementptr inbounds i64, ptr %0, i64 %.07
  %6 = load i64, ptr %5, align 8, !tbaa !5
  %7 = add nsw i64 %6, %2
  store i64 %7, ptr %5, align 8, !tbaa !5
  %8 = sub nsw i64 0, %.07
  %9 = and i64 %.07, %8
  %10 = add nsw i64 %9, %.07
  %11 = load i64, ptr @n, align 8, !tbaa !5
  %.not = icmp sgt i64 %10, %11
  br i1 %.not, label %._crit_edge, label %.lr.ph, !llvm.loop !9

._crit_edge:                                      ; preds = %.lr.ph, %3
  ret void
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind memory(read, argmem: readwrite, inaccessiblemem: none) 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"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: GlobalOptPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass