; LLVM IR from ShahjalalShohag/code-library :: Math/q Binomial.ll (Z18count_except_xor_1ii)

; 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"

%struct.modint = type { i32 }

; 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
declare dso_local void @_ZN6modintILi998244353EEC2Ei(ptr noundef nonnull align 4 dereferenceable(4), i32 noundef) unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local i32 @_Z25count_rank_r_except_xor_1iii(i32 noundef, i32 noundef, i32 noundef) #2

; Function Attrs: mustprogress uwtable
define dso_local i32 @_Z18count_except_xor_1ii(i32 noundef %0, i32 noundef %1) #2 {
  %3 = alloca %struct.modint, align 4
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca %struct.modint, align 4
  store i32 %0, ptr %4, align 4, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !5
  call void @_ZN6modintILi998244353EEC2Ei(ptr noundef nonnull align 4 dereferenceable(4) %3, i32 noundef 0)
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #4
  store i32 0, ptr %6, align 4, !tbaa !5
  br label %8

8:                                                ; preds = %22, %2
  %9 = load i32, ptr %6, align 4, !tbaa !5
  %10 = load i32, ptr %5, align 4, !tbaa !5
  %11 = icmp sle i32 %9, %10
  br i1 %11, label %13, label %12

12:                                               ; preds = %8
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #4
  br label %25

13:                                               ; preds = %8
  %14 = load i32, ptr %4, align 4, !tbaa !5
  %15 = load i32, ptr %5, align 4, !tbaa !5
  %16 = load i32, ptr %6, align 4, !tbaa !5
  %17 = call i32 @_Z25count_rank_r_except_xor_1iii(i32 noundef %14, i32 noundef %15, i32 noundef %16)
  %18 = getelementptr inbounds %struct.modint, ptr %7, i32 0, i32 0
  store i32 %17, ptr %18, align 4
  %19 = getelementptr inbounds %struct.modint, ptr %7, i32 0, i32 0
  %20 = load i32, ptr %19, align 4
  %21 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZN6modintILi998244353EEpLES0_(ptr noundef nonnull align 4 dereferenceable(4) %3, i32 %20)
  br label %22

22:                                               ; preds = %13
  %23 = load i32, ptr %6, align 4, !tbaa !5
  %24 = add nsw i32 %23, 1
  store i32 %24, ptr %6, align 4, !tbaa !5
  br label %8, !llvm.loop !9

25:                                               ; preds = %12
  %26 = getelementptr inbounds %struct.modint, ptr %3, i32 0, i32 0
  %27 = load i32, ptr %26, align 4
  ret i32 %27
}

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZN6modintILi998244353EEpLES0_(ptr noundef nonnull align 4 dereferenceable(4), i32) #3 align 2

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 = { 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 #3 = { inlinehint 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 #4 = { 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"}
!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"

%struct.modint = type { i32 }

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN6modintILi998244353EEC2Ei(ptr noundef nonnull align 4 dereferenceable(4), i32 noundef) unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
declare dso_local i32 @_Z25count_rank_r_except_xor_1iii(i32 noundef, i32 noundef, i32 noundef) local_unnamed_addr #1

; Function Attrs: mustprogress uwtable
define dso_local i32 @_Z18count_except_xor_1ii(i32 noundef %0, i32 noundef %1) local_unnamed_addr #1 {
  %3 = alloca %struct.modint, align 4
  call void @_ZN6modintILi998244353EEC2Ei(ptr noundef nonnull align 4 dereferenceable(4) %3, i32 noundef 0)
  %.not7 = icmp slt i32 %1, 0
  br i1 %.not7, label %._crit_edge, label %.lr.ph

._crit_edge:                                      ; preds = %.lr.ph, %2
  %4 = load i32, ptr %3, align 4
  ret i32 %4

.lr.ph:                                           ; preds = %2, %.lr.ph
  %.08 = phi i32 [ %7, %.lr.ph ], [ 0, %2 ]
  %5 = call i32 @_Z25count_rank_r_except_xor_1iii(i32 noundef %0, i32 noundef %1, i32 noundef %.08)
  %6 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZN6modintILi998244353EEpLES0_(ptr noundef nonnull align 4 dereferenceable(4) %3, i32 %5)
  %7 = add nuw i32 %.08, 1
  %exitcond.not = icmp eq i32 %.08, %1
  br i1 %exitcond.not, label %._crit_edge, label %.lr.ph, !llvm.loop !5
}

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZN6modintILi998244353EEpLES0_(ptr noundef nonnull align 4 dereferenceable(4), i32) local_unnamed_addr #2 align 2

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 = { 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 #2 = { inlinehint 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 = distinct !{!5, !6}
!6 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass