; LLVM IR from VastoLorde95/Competitive-Programming :: SPOJ/Random/KOPC12B/x.ll (Z4minvx)

; 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"

@factt = external dso_local global [2000002 x i64], align 16
@MODD = external dso_local global i64, align 8

; 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 @_Z4minvx(i64 noundef %0) #1 {
  %2 = alloca i64, align 8
  %3 = alloca i64, align 8
  %4 = alloca i64, align 8
  store i64 %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #2
  store i64 1, ptr %3, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #2
  %5 = load i64, ptr @MODD, align 8, !tbaa !5
  %6 = sub nsw i64 %5, 2
  store i64 %6, ptr %4, align 8, !tbaa !5
  %7 = load i64, ptr %2, align 8, !tbaa !5
  %8 = getelementptr inbounds [2000002 x i64], ptr @factt, i64 0, i64 %7
  %9 = load i64, ptr %8, align 8, !tbaa !5
  store i64 %9, ptr %2, align 8, !tbaa !5
  br label %10

10:                                               ; preds = %24, %1
  %11 = load i64, ptr %4, align 8, !tbaa !5
  %12 = icmp ne i64 %11, 0
  br i1 %12, label %13, label %33

13:                                               ; preds = %10
  %14 = load i64, ptr %4, align 8, !tbaa !5
  %15 = and i64 %14, 1
  %16 = icmp ne i64 %15, 0
  br i1 %16, label %17, label %24

17:                                               ; preds = %13
  %18 = load i64, ptr %2, align 8, !tbaa !5
  %19 = load i64, ptr %3, align 8, !tbaa !5
  %20 = mul nsw i64 %19, %18
  store i64 %20, ptr %3, align 8, !tbaa !5
  %21 = load i64, ptr @MODD, align 8, !tbaa !5
  %22 = load i64, ptr %3, align 8, !tbaa !5
  %23 = srem i64 %22, %21
  store i64 %23, ptr %3, align 8, !tbaa !5
  br label %24

24:                                               ; preds = %17, %13
  %25 = load i64, ptr %4, align 8, !tbaa !5
  %26 = ashr i64 %25, 1
  store i64 %26, ptr %4, align 8, !tbaa !5
  %27 = load i64, ptr %2, align 8, !tbaa !5
  %28 = load i64, ptr %2, align 8, !tbaa !5
  %29 = mul nsw i64 %28, %27
  store i64 %29, ptr %2, align 8, !tbaa !5
  %30 = load i64, ptr @MODD, align 8, !tbaa !5
  %31 = load i64, ptr %2, align 8, !tbaa !5
  %32 = srem i64 %31, %30
  store i64 %32, ptr %2, align 8, !tbaa !5
  br label %10, !llvm.loop !9

33:                                               ; preds = %10
  %34 = load i64, ptr %3, align 8, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #2
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #2
  ret i64 %34
}

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 = !{!"long long", !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"

@factt = external dso_local local_unnamed_addr global [2000002 x i64], align 16
@MODD = 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 @_Z4minvx(i64 noundef %0) local_unnamed_addr #0 {
  %2 = load i64, ptr @MODD, align 8, !tbaa !5
  %3 = add nsw i64 %2, -2
  %.not14 = icmp eq i64 %3, 0
  br i1 %.not14, label %._crit_edge, label %.lr.ph.preheader

.lr.ph.preheader:                                 ; preds = %1
  %4 = getelementptr inbounds [2000002 x i64], ptr @factt, i64 0, i64 %0
  %5 = load i64, ptr %4, align 8, !tbaa !5
  br label %.lr.ph

.lr.ph:                                           ; preds = %.lr.ph.preheader, %10
  %.017 = phi i64 [ %11, %10 ], [ %3, %.lr.ph.preheader ]
  %.01116 = phi i64 [ %.1, %10 ], [ 1, %.lr.ph.preheader ]
  %.01215 = phi i64 [ %13, %10 ], [ %5, %.lr.ph.preheader ]
  %6 = and i64 %.017, 1
  %.not13 = icmp eq i64 %6, 0
  br i1 %.not13, label %10, label %7

7:                                                ; preds = %.lr.ph
  %8 = mul nsw i64 %.01116, %.01215
  %9 = srem i64 %8, %2
  br label %10

10:                                               ; preds = %7, %.lr.ph
  %.1 = phi i64 [ %9, %7 ], [ %.01116, %.lr.ph ]
  %11 = ashr i64 %.017, 1
  %12 = mul nsw i64 %.01215, %.01215
  %13 = srem i64 %12, %2
  %.not = icmp ult i64 %.017, 2
  br i1 %.not, label %._crit_edge, label %.lr.ph, !llvm.loop !9

._crit_edge:                                      ; preds = %10, %1
  %.011.lcssa = phi i64 [ 1, %1 ], [ %.1, %10 ]
  ret i64 %.011.lcssa
}

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"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


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