; LLVM IR from VastoLorde95/Competitive-Programming :: CodeChef/WF/Medium Hard/FNCS/A.ll (Z3geti)

; 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"

@BLOCK = external dso_local global i64, align 8
@sum1 = external dso_local global [333 x [333 x i64]], align 16
@sum2 = external dso_local global [333 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 nounwind uwtable
define dso_local noundef i64 @_Z3geti(i32 noundef %0) #1 {
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  store i32 %0, ptr %2, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #2
  %4 = load i32, ptr %2, align 4, !tbaa !5
  %5 = sext i32 %4 to i64
  %6 = load i64, ptr @BLOCK, align 8, !tbaa !9
  %7 = add i64 %5, %6
  %8 = sub i64 %7, 1
  %9 = load i64, ptr @BLOCK, align 8, !tbaa !9
  %10 = udiv i64 %8, %9
  %11 = trunc i64 %10 to i32
  store i32 %11, ptr %3, align 4, !tbaa !5
  %12 = load i32, ptr %3, align 4, !tbaa !5
  %13 = sub nsw i32 %12, 1
  %14 = sext i32 %13 to i64
  %15 = getelementptr inbounds [333 x i64], ptr @sum2, i64 0, i64 %14
  %16 = load i64, ptr %15, align 8, !tbaa !9
  %17 = load i32, ptr %3, align 4, !tbaa !5
  %18 = sext i32 %17 to i64
  %19 = getelementptr inbounds [333 x [333 x i64]], ptr @sum1, i64 0, i64 %18
  %20 = load i32, ptr %2, align 4, !tbaa !5
  %21 = sext i32 %20 to i64
  %22 = load i64, ptr @BLOCK, align 8, !tbaa !9
  %23 = load i32, ptr %3, align 4, !tbaa !5
  %24 = sub nsw i32 %23, 1
  %25 = sext i32 %24 to i64
  %26 = mul i64 %22, %25
  %27 = add i64 %26, 1
  %28 = sub i64 %21, %27
  %29 = add i64 %28, 1
  %30 = getelementptr inbounds [333 x i64], ptr %19, i64 0, i64 %29
  %31 = load i64, ptr %30, align 8, !tbaa !9
  %32 = add i64 %16, %31
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #2
  ret i64 %32
}

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 = !{!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"

@BLOCK = external dso_local local_unnamed_addr global i64, align 8
@sum1 = external dso_local local_unnamed_addr global [333 x [333 x i64]], align 16
@sum2 = external dso_local local_unnamed_addr global [333 x i64], align 16

; Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(read, argmem: none, inaccessiblemem: none) uwtable
define dso_local noundef i64 @_Z3geti(i32 noundef %0) local_unnamed_addr #0 {
  %2 = sext i32 %0 to i64
  %3 = load i64, ptr @BLOCK, align 8, !tbaa !5
  %4 = add nsw i64 %2, -1
  %5 = add i64 %4, %3
  %6 = udiv i64 %5, %3
  %7 = shl i64 %6, 32
  %sext = add i64 %7, -4294967296
  %8 = ashr exact i64 %sext, 32
  %9 = getelementptr inbounds [333 x i64], ptr @sum2, i64 0, i64 %8
  %10 = load i64, ptr %9, align 8, !tbaa !5
  %11 = ashr exact i64 %7, 32
  %12 = mul i64 %8, %3
  %13 = sub i64 %2, %12
  %14 = getelementptr inbounds [333 x [333 x i64]], ptr @sum1, i64 0, i64 %11, i64 %13
  %15 = load i64, ptr %14, align 8, !tbaa !5
  %16 = add i64 %15, %10
  ret i64 %16
}

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 = !{!"long long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}


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