; LLVM IR from eyangch/competitive-programming :: Codeforces/1413/e.ll (Z4calcx)

; 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"

@a = external dso_local global i64, align 8
@b = external dso_local global i64, align 8
@d = external dso_local global i64, align 8

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef i64 @_Z4calcx(i64 noundef %0) #0 {
  %2 = alloca i64, align 8
  store i64 %0, ptr %2, align 8, !tbaa !5
  %3 = load i64, ptr @a, align 8, !tbaa !5
  %4 = load i64, ptr %2, align 8, !tbaa !5
  %5 = mul nsw i64 %3, %4
  %6 = load i64, ptr @b, align 8, !tbaa !5
  %7 = load i64, ptr @d, align 8, !tbaa !5
  %8 = mul nsw i64 %6, %7
  %9 = load i64, ptr %2, align 8, !tbaa !5
  %10 = mul nsw i64 %8, %9
  %11 = load i64, ptr %2, align 8, !tbaa !5
  %12 = add nsw i64 %11, 1
  %13 = mul nsw i64 %10, %12
  %14 = sdiv i64 %13, 2
  %15 = sub nsw i64 %5, %14
  %16 = load i64, ptr @a, align 8, !tbaa !5
  %17 = add nsw i64 %15, %16
  ret i64 %17
}

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


; 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"

@a = external dso_local local_unnamed_addr global i64, align 8
@b = external dso_local local_unnamed_addr global i64, align 8
@d = external dso_local local_unnamed_addr global i64, align 8

; Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(read, argmem: none, inaccessiblemem: none) uwtable
define dso_local noundef i64 @_Z4calcx(i64 noundef %0) local_unnamed_addr #0 {
  %2 = load i64, ptr @a, align 8, !tbaa !5
  %3 = load i64, ptr @b, align 8, !tbaa !5
  %4 = load i64, ptr @d, align 8, !tbaa !5
  %5 = add i64 %0, 1
  %6 = mul i64 %5, %0
  %7 = mul i64 %6, %3
  %8 = mul i64 %7, %4
  %.neg = sdiv i64 %8, -2
  %9 = mul i64 %2, %5
  %10 = add i64 %9, %.neg
  ret i64 %10
}

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,GVNPass,GlobalOptPass,InstCombinePass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass