; LLVM IR from VastoLorde95/Competitive-Programming :: SPOJ/Random/CUTSQRS/cut.ll (Z6isgoodii)

; 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 uwtable
define dso_local noundef zeroext i1 @_Z6isgoodii(i32 noundef %0, i32 noundef %1) #0 {
  %3 = alloca i1, align 1
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  store i32 %0, ptr %4, align 4, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #2
  %8 = load i32, ptr %5, align 4, !tbaa !5
  %9 = load i32, ptr %4, align 4, !tbaa !5
  %10 = srem i32 %8, %9
  %11 = icmp ne i32 %10, 0
  br i1 %11, label %12, label %28

12:                                               ; preds = %2
  %13 = load i32, ptr %5, align 4, !tbaa !5
  %14 = load i32, ptr %4, align 4, !tbaa !5
  %15 = sdiv i32 %13, %14
  store i32 %15, ptr %6, align 4, !tbaa !5
  %16 = load i32, ptr %6, align 4, !tbaa !5
  %17 = icmp sgt i32 %16, 1
  br i1 %17, label %18, label %19

18:                                               ; preds = %12
  store i1 true, ptr %3, align 1
  store i32 1, ptr %7, align 4
  br label %29

19:                                               ; preds = %12
  %20 = load i32, ptr %5, align 4, !tbaa !5
  %21 = load i32, ptr %4, align 4, !tbaa !5
  %22 = sub nsw i32 %20, %21
  %23 = load i32, ptr %4, align 4, !tbaa !5
  %24 = call noundef zeroext i1 @_Z6isgoodii(i32 noundef %22, i32 noundef %23)
  %25 = zext i1 %24 to i32
  %26 = sub nsw i32 1, %25
  %27 = icmp ne i32 %26, 0
  store i1 %27, ptr %3, align 1
  store i32 1, ptr %7, align 4
  br label %29

28:                                               ; preds = %2
  store i1 true, ptr %3, align 1
  store i32 1, ptr %7, align 4
  br label %29

29:                                               ; preds = %28, %19, %18
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #2
  %30 = load i1, ptr %3, align 1
  ret i1 %30
}

; 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 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 = !{!"int", !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"

; Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none) uwtable
define dso_local noundef zeroext i1 @_Z6isgoodii(i32 noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = srem i32 %1, %0
  %.not9 = icmp eq i32 %3, 0
  br i1 %.not9, label %tailrecurse._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %2, %tailrecurse
  %.tr812 = phi i32 [ %.tr11, %tailrecurse ], [ %1, %2 ]
  %.tr11 = phi i32 [ %6, %tailrecurse ], [ %0, %2 ]
  %accumulator.tr10 = phi i1 [ %not., %tailrecurse ], [ false, %2 ]
  %4 = sdiv i32 %.tr812, %.tr11
  %5 = icmp sgt i32 %4, 1
  br i1 %5, label %tailrecurse._crit_edge.loopexit, label %tailrecurse

tailrecurse:                                      ; preds = %.lr.ph
  %6 = sub nsw i32 %.tr812, %.tr11
  %not. = xor i1 %accumulator.tr10, true
  %7 = srem i32 %.tr11, %6
  %.not = icmp eq i32 %7, 0
  br i1 %.not, label %tailrecurse._crit_edge.loopexit, label %.lr.ph

tailrecurse._crit_edge.loopexit:                  ; preds = %tailrecurse, %.lr.ph
  %accumulator.tr.lcssa.ph = phi i1 [ %accumulator.tr10, %.lr.ph ], [ %not., %tailrecurse ]
  %8 = xor i1 %accumulator.tr.lcssa.ph, true
  br label %tailrecurse._crit_edge

tailrecurse._crit_edge:                           ; preds = %tailrecurse._crit_edge.loopexit, %2
  %accumulator.tr.lcssa = phi i1 [ true, %2 ], [ %8, %tailrecurse._crit_edge.loopexit ]
  ret i1 %accumulator.tr.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)"}


; Effective O3 passes: GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass