; LLVM IR from bqi343/cp-notebook :: Contests/USACO Solutions/2010-11/mkmoney.ll (Z7processxx)

; 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"

@ans = external dso_local global [100001 x i64], align 16

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress uwtable
define dso_local void @_Z7processxx(i64 noundef %0, i64 noundef %1) #1 {
  %3 = alloca i64, align 8
  %4 = alloca i64, align 8
  %5 = alloca i32, align 4
  store i64 %0, ptr %3, align 8, !tbaa !5
  store i64 %1, ptr %4, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #2
  store i32 100000, ptr %5, align 4, !tbaa !9
  br label %6

6:                                                ; preds = %24, %2
  %7 = load i32, ptr %5, align 4, !tbaa !9
  %8 = sext i32 %7 to i64
  %9 = load i64, ptr %4, align 8, !tbaa !5
  %10 = icmp sge i64 %8, %9
  br i1 %10, label %12, label %11

11:                                               ; preds = %6
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #2
  br label %27

12:                                               ; preds = %6
  %13 = load i32, ptr %5, align 4, !tbaa !9
  %14 = sext i32 %13 to i64
  %15 = getelementptr inbounds [100001 x i64], ptr @ans, i64 0, i64 %14
  %16 = load i32, ptr %5, align 4, !tbaa !9
  %17 = sext i32 %16 to i64
  %18 = load i64, ptr %4, align 8, !tbaa !5
  %19 = sub nsw i64 %17, %18
  %20 = getelementptr inbounds [100001 x i64], ptr @ans, i64 0, i64 %19
  %21 = load i64, ptr %20, align 8, !tbaa !5
  %22 = load i64, ptr %3, align 8, !tbaa !5
  %23 = add nsw i64 %21, %22
  call void @_Z5ckmaxIxEvRT_S0_(ptr noundef nonnull align 8 dereferenceable(8) %15, i64 noundef %23)
  br label %24

24:                                               ; preds = %12
  %25 = load i32, ptr %5, align 4, !tbaa !9
  %26 = add nsw i32 %25, -1
  store i32 %26, ptr %5, align 4, !tbaa !9
  br label %6, !llvm.loop !11

27:                                               ; preds = %11
  ret void
}

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z5ckmaxIxEvRT_S0_(ptr noundef nonnull align 8 dereferenceable(8), i64 noundef) #1

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #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 = !{!"int", !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"

@ans = external dso_local global [100001 x i64], align 16

; Function Attrs: mustprogress uwtable
define dso_local void @_Z7processxx(i64 noundef %0, i64 noundef %1) local_unnamed_addr #0 {
  %.not9 = icmp sgt i64 %1, 100000
  br i1 %.not9, label %._crit_edge, label %.lr.ph

._crit_edge:                                      ; preds = %.lr.ph, %2
  ret void

.lr.ph:                                           ; preds = %2, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 100000, %2 ]
  %3 = getelementptr inbounds [100001 x i64], ptr @ans, i64 0, i64 %indvars.iv
  %4 = sub nsw i64 %indvars.iv, %1
  %5 = getelementptr inbounds [100001 x i64], ptr @ans, i64 0, i64 %4
  %6 = load i64, ptr %5, align 8, !tbaa !5
  %7 = add nsw i64 %6, %0
  tail call void @_Z5ckmaxIxEvRT_S0_(ptr noundef nonnull align 8 dereferenceable(8) %3, i64 noundef %7)
  %indvars.iv.next = add nsw i64 %indvars.iv, -1
  %.not.not = icmp sgt i64 %indvars.iv, %1
  br i1 %.not.not, label %.lr.ph, label %._crit_edge, !llvm.loop !9
}

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z5ckmaxIxEvRT_S0_(ptr noundef nonnull align 8 dereferenceable(8), i64 noundef) local_unnamed_addr #0

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" }

!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: EarlyCSEPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass,TailCallElimPass