; LLVM IR from ritikbanger/Hacktoberfest2022-DSA :: 01. Mathematics/number contains zero.ll (Z11containzerol)

; 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 @_Z11containzerol(i64 noundef %0) #0 {
  %2 = alloca i64, align 8
  %3 = alloca i8, align 1
  store i64 %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 1, ptr %3) #2
  store i8 0, ptr %3, align 1, !tbaa !9
  br label %4

4:                                                ; preds = %12, %1
  %5 = load i64, ptr %2, align 8, !tbaa !5
  %6 = icmp sgt i64 %5, 0
  br i1 %6, label %7, label %15

7:                                                ; preds = %4
  %8 = load i64, ptr %2, align 8, !tbaa !5
  %9 = srem i64 %8, 10
  %10 = icmp eq i64 %9, 0
  br i1 %10, label %11, label %12

11:                                               ; preds = %7
  store i8 1, ptr %3, align 1, !tbaa !9
  br label %15

12:                                               ; preds = %7
  %13 = load i64, ptr %2, align 8, !tbaa !5
  %14 = sdiv i64 %13, 10
  store i64 %14, ptr %2, align 8, !tbaa !5
  br label %4, !llvm.loop !11

15:                                               ; preds = %11, %4
  %16 = load i8, ptr %3, align 1, !tbaa !9, !range !13, !noundef !14
  %17 = trunc i8 %16 to i1
  call void @llvm.lifetime.end.p0(i64 1, ptr %3) #2
  ret i1 %17
}

; 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 = !{!10, !10, i64 0}
!10 = !{!"bool", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = !{i8 0, i8 2}
!14 = !{}


; 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 @_Z11containzerol(i64 noundef %0) local_unnamed_addr #0 {
  %2 = icmp sgt i64 %0, 0
  %3 = urem i64 %0, 10
  %4 = icmp ne i64 %3, 0
  %or.cond.not7 = and i1 %2, %4
  br i1 %or.cond.not7, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %1, %.lr.ph
  %.048 = phi i64 [ %5, %.lr.ph ], [ %0, %1 ]
  %5 = udiv i64 %.048, 10
  %6 = icmp ugt i64 %.048, 9
  %7 = urem i64 %5, 10
  %8 = icmp ne i64 %7, 0
  %or.cond.not = and i1 %6, %8
  br i1 %or.cond.not, label %.lr.ph, label %._crit_edge, !llvm.loop !5

._crit_edge:                                      ; preds = %.lr.ph, %1
  %.lcssa = phi i1 [ %2, %1 ], [ %6, %.lr.ph ]
  ret i1 %.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: GVNPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass