; LLVM IR from DionysiosB/CodeForces :: 0900-0999/937B-VileGrasshoppers.ll (Z10checkPrimell)

; 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"

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef zeroext i1 @_Z10checkPrimell(i64 noundef %0, i64 noundef %1) #0 {
  %3 = alloca i1, align 1
  %4 = alloca i64, align 8
  %5 = alloca i64, align 8
  %6 = alloca i64, align 8
  %7 = alloca i32, align 4
  store i64 %0, ptr %4, align 8, !tbaa !5
  store i64 %1, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #2
  store i64 2, ptr %6, align 8, !tbaa !5
  br label %8

8:                                                ; preds = %28, %2
  %9 = load i64, ptr %6, align 8, !tbaa !5
  %10 = load i64, ptr %5, align 8, !tbaa !5
  %11 = icmp sle i64 %9, %10
  br i1 %11, label %12, label %18

12:                                               ; preds = %8
  %13 = load i64, ptr %6, align 8, !tbaa !5
  %14 = load i64, ptr %6, align 8, !tbaa !5
  %15 = mul nsw i64 %13, %14
  %16 = load i64, ptr %4, align 8, !tbaa !5
  %17 = icmp sle i64 %15, %16
  br label %18

18:                                               ; preds = %12, %8
  %19 = phi i1 [ false, %8 ], [ %17, %12 ]
  br i1 %19, label %21, label %20

20:                                               ; preds = %18
  store i32 2, ptr %7, align 4
  br label %31

21:                                               ; preds = %18
  %22 = load i64, ptr %4, align 8, !tbaa !5
  %23 = load i64, ptr %6, align 8, !tbaa !5
  %24 = srem i64 %22, %23
  %25 = icmp eq i64 %24, 0
  br i1 %25, label %26, label %27

26:                                               ; preds = %21
  store i1 false, ptr %3, align 1
  store i32 1, ptr %7, align 4
  br label %31

27:                                               ; preds = %21
  br label %28

28:                                               ; preds = %27
  %29 = load i64, ptr %6, align 8, !tbaa !5
  %30 = add nsw i64 %29, 1
  store i64 %30, ptr %6, align 8, !tbaa !5
  br label %8, !llvm.loop !9

31:                                               ; preds = %26, %20
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #2
  %32 = load i32, ptr %7, align 4
  switch i32 %32, label %36 [
    i32 2, label %33
    i32 1, label %34
  ]

33:                                               ; preds = %31
  store i1 true, ptr %3, align 1
  br label %34

34:                                               ; preds = %33, %31
  %35 = load i1, ptr %3, align 1
  ret i1 %35

36:                                               ; preds = %31
  unreachable
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

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

; Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none) uwtable
define dso_local noundef zeroext i1 @_Z10checkPrimell(i64 noundef %0, i64 noundef %1) local_unnamed_addr #0 {
  %.not13 = icmp slt i64 %1, 2
  %.not1214 = icmp slt i64 %0, 4
  %or.cond15 = or i1 %.not13, %.not1214
  br i1 %or.cond15, label %.critedge, label %.lr.ph

3:                                                ; preds = %.lr.ph
  %4 = add nuw nsw i64 %.0916, 1
  %.not = icmp sge i64 %.0916, %1
  %5 = mul nuw nsw i64 %4, %4
  %.not12 = icmp sgt i64 %5, %0
  %or.cond = select i1 %.not, i1 true, i1 %.not12
  br i1 %or.cond, label %.critedge, label %.lr.ph, !llvm.loop !5

.lr.ph:                                           ; preds = %2, %3
  %.0916 = phi i64 [ %4, %3 ], [ 2, %2 ]
  %6 = urem i64 %0, %.0916
  %.not20 = icmp ne i64 %6, 0
  br i1 %.not20, label %3, label %.critedge

.critedge:                                        ; preds = %3, %.lr.ph, %2
  %or.cond.lcssa = phi i1 [ true, %2 ], [ %.not20, %.lr.ph ], [ %.not20, %3 ]
  ret i1 %or.cond.lcssa
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(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 = distinct !{!5, !6}
!6 = !{!"llvm.loop.mustprogress"}


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