; LLVM IR from TheAlgorithms/C-Plus-Plus :: probability/poisson_dist.ll (Z23poisson_range_successesddd)

; 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: 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 noundef double @_Z19poisson_x_successesdd(double noundef, double noundef) #1

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef double @_Z23poisson_range_successesddd(double noundef %0, double noundef %1, double noundef %2) #1 {
  %4 = alloca double, align 8
  %5 = alloca double, align 8
  %6 = alloca double, align 8
  %7 = alloca double, align 8
  %8 = alloca i32, align 4
  store double %0, ptr %4, align 8, !tbaa !5
  store double %1, ptr %5, align 8, !tbaa !5
  store double %2, ptr %6, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #2
  store double 0.000000e+00, ptr %7, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #2
  %9 = load double, ptr %5, align 8, !tbaa !5
  %10 = fptosi double %9 to i32
  store i32 %10, ptr %8, align 4, !tbaa !9
  br label %11

11:                                               ; preds = %24, %3
  %12 = load i32, ptr %8, align 4, !tbaa !9
  %13 = sitofp i32 %12 to double
  %14 = load double, ptr %6, align 8, !tbaa !5
  %15 = fcmp ole double %13, %14
  br i1 %15, label %17, label %16

16:                                               ; preds = %11
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #2
  br label %27

17:                                               ; preds = %11
  %18 = load double, ptr %4, align 8, !tbaa !5
  %19 = load i32, ptr %8, align 4, !tbaa !9
  %20 = sitofp i32 %19 to double
  %21 = call noundef double @_Z19poisson_x_successesdd(double noundef %18, double noundef %20)
  %22 = load double, ptr %7, align 8, !tbaa !5
  %23 = fadd double %22, %21
  store double %23, ptr %7, align 8, !tbaa !5
  br label %24

24:                                               ; preds = %17
  %25 = load i32, ptr %8, align 4, !tbaa !9
  %26 = add nsw i32 %25, 1
  store i32 %26, ptr %8, align 4, !tbaa !9
  br label %11, !llvm.loop !11

27:                                               ; preds = %16
  %28 = load double, ptr %7, align 8, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #2
  ret double %28
}

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 = !{!"double", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"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 nounwind uwtable
declare dso_local noundef double @_Z19poisson_x_successesdd(double noundef, double noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef double @_Z23poisson_range_successesddd(double noundef %0, double noundef %1, double noundef %2) local_unnamed_addr #0 {
  %4 = fptosi double %1 to i32
  %5 = sitofp i32 %4 to double
  %6 = fcmp ugt double %5, %2
  br i1 %6, label %._crit_edge, label %.lr.ph

._crit_edge:                                      ; preds = %.lr.ph, %3
  %.07.lcssa = phi double [ 0.000000e+00, %3 ], [ %9, %.lr.ph ]
  ret double %.07.lcssa

.lr.ph:                                           ; preds = %3, %.lr.ph
  %7 = phi double [ %11, %.lr.ph ], [ %5, %3 ]
  %.010 = phi i32 [ %10, %.lr.ph ], [ %4, %3 ]
  %.079 = phi double [ %9, %.lr.ph ], [ 0.000000e+00, %3 ]
  %8 = tail call noundef double @_Z19poisson_x_successesdd(double noundef %0, double noundef %7)
  %9 = fadd double %.079, %8
  %10 = add nsw i32 %.010, 1
  %11 = sitofp i32 %10 to double
  %12 = fcmp ugt double %11, %2
  br i1 %12, label %._crit_edge, label %.lr.ph, !llvm.loop !5
}

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" }

!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,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass,TailCallElimPass