; LLVM IR from tangjz/acm-icpc :: lydsy/3626.ll (Z3sumi)

; 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"

@bit = external dso_local global [50001 x [2 x i32]], 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 nounwind uwtable
define dso_local noundef i32 @_Z3sumi(i32 noundef %0) #1 {
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  store i32 %0, ptr %2, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #2
  store i32 0, ptr %3, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #2
  %5 = load i32, ptr %2, align 4, !tbaa !5
  store i32 %5, ptr %4, align 4, !tbaa !5
  br label %6

6:                                                ; preds = %38, %1
  %7 = load i32, ptr %4, align 4, !tbaa !5
  %8 = icmp sgt i32 %7, 0
  br i1 %8, label %10, label %9

9:                                                ; preds = %6
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #2
  br label %45

10:                                               ; preds = %6
  %11 = load i32, ptr %3, align 4, !tbaa !5
  %12 = sext i32 %11 to i64
  %13 = load i32, ptr %2, align 4, !tbaa !5
  %14 = sext i32 %13 to i64
  %15 = add nsw i64 %14, 1
  %16 = load i32, ptr %4, align 4, !tbaa !5
  %17 = sext i32 %16 to i64
  %18 = getelementptr inbounds [50001 x [2 x i32]], ptr @bit, i64 0, i64 %17
  %19 = getelementptr inbounds [2 x i32], ptr %18, i64 0, i64 0
  %20 = load i32, ptr %19, align 8, !tbaa !5
  %21 = sext i32 %20 to i64
  %22 = mul nsw i64 %15, %21
  %23 = add nsw i64 %12, %22
  %24 = load i32, ptr %4, align 4, !tbaa !5
  %25 = sext i32 %24 to i64
  %26 = getelementptr inbounds [50001 x [2 x i32]], ptr @bit, i64 0, i64 %25
  %27 = getelementptr inbounds [2 x i32], ptr %26, i64 0, i64 1
  %28 = load i32, ptr %27, align 4, !tbaa !5
  %29 = sext i32 %28 to i64
  %30 = sub nsw i64 %23, %29
  %31 = srem i64 %30, 201314
  %32 = trunc i64 %31 to i32
  store i32 %32, ptr %3, align 4, !tbaa !5
  %33 = icmp slt i32 %32, 0
  br i1 %33, label %34, label %37

34:                                               ; preds = %10
  %35 = load i32, ptr %3, align 4, !tbaa !5
  %36 = add nsw i32 %35, 201314
  store i32 %36, ptr %3, align 4, !tbaa !5
  br label %37

37:                                               ; preds = %34, %10
  br label %38

38:                                               ; preds = %37
  %39 = load i32, ptr %4, align 4, !tbaa !5
  %40 = load i32, ptr %4, align 4, !tbaa !5
  %41 = sub nsw i32 0, %40
  %42 = and i32 %39, %41
  %43 = load i32, ptr %4, align 4, !tbaa !5
  %44 = sub nsw i32 %43, %42
  store i32 %44, ptr %4, align 4, !tbaa !5
  br label %6, !llvm.loop !9

45:                                               ; preds = %9
  %46 = load i32, ptr %3, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #2
  ret i32 %46
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { 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"}
!9 = distinct !{!9, !10}
!10 = !{!"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"

@bit = external dso_local local_unnamed_addr global [50001 x [2 x i32]], align 16

; Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(read, argmem: none, inaccessiblemem: none) uwtable
define dso_local noundef range(i32 0, 201314) i32 @_Z3sumi(i32 noundef %0) local_unnamed_addr #0 {
  %2 = icmp sgt i32 %0, 0
  br i1 %2, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %1
  %narrow = add nuw i32 %0, 1
  %3 = zext i32 %narrow to i64
  br label %4

._crit_edge:                                      ; preds = %4, %1
  %.011.lcssa = phi i32 [ 0, %1 ], [ %spec.select, %4 ]
  ret i32 %.011.lcssa

4:                                                ; preds = %.lr.ph, %4
  %.015 = phi i32 [ %0, %.lr.ph ], [ %20, %4 ]
  %.01114 = phi i32 [ 0, %.lr.ph ], [ %spec.select, %4 ]
  %5 = zext nneg i32 %.01114 to i64
  %6 = zext nneg i32 %.015 to i64
  %7 = getelementptr inbounds [50001 x [2 x i32]], ptr @bit, i64 0, i64 %6
  %8 = load i32, ptr %7, align 8, !tbaa !5
  %9 = sext i32 %8 to i64
  %10 = mul nsw i64 %9, %3
  %11 = add nsw i64 %10, %5
  %12 = getelementptr inbounds i8, ptr %7, i64 4
  %13 = load i32, ptr %12, align 4, !tbaa !5
  %14 = sext i32 %13 to i64
  %15 = sub i64 %11, %14
  %16 = srem i64 %15, 201314
  %17 = trunc nsw i64 %16 to i32
  %18 = icmp slt i64 %16, 0
  %19 = add nsw i32 %17, 201314
  %spec.select = select i1 %18, i32 %19, i32 %17
  %.not = add nsw i32 %.015, -1
  %20 = and i32 %.not, %.015
  %.not16 = icmp eq i32 %20, 0
  br i1 %.not16, label %._crit_edge, label %4, !llvm.loop !9
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(read, argmem: none, 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass