; LLVM IR from ox-vgg/vise :: src/search_engine/relja_retrival/external/KMCode_relja/stats/stats.ll (Z8probChi2ff)

; 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 float @_Z4chi2ff(float noundef, float noundef) #1

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef float @_Z8probChi2ff(float noundef %0, float noundef %1) #1 {
  %3 = alloca float, align 4
  %4 = alloca float, align 4
  %5 = alloca float, align 4
  %6 = alloca float, align 4
  store float %0, ptr %3, align 4, !tbaa !5
  store float %1, ptr %4, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #2
  store float 0.000000e+00, ptr %5, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #2
  store float 0.000000e+00, ptr %6, align 4, !tbaa !5
  br label %7

7:                                                ; preds = %11, %2
  %8 = load float, ptr %6, align 4, !tbaa !5
  %9 = load float, ptr %3, align 4, !tbaa !5
  %10 = fcmp olt float %8, %9
  br i1 %10, label %11, label %21

11:                                               ; preds = %7
  %12 = load float, ptr %6, align 4, !tbaa !5
  %13 = load float, ptr %4, align 4, !tbaa !5
  %14 = call noundef float @_Z4chi2ff(float noundef %12, float noundef %13)
  %15 = load float, ptr %5, align 4, !tbaa !5
  %16 = fadd float %15, %14
  store float %16, ptr %5, align 4, !tbaa !5
  %17 = load float, ptr %6, align 4, !tbaa !5
  %18 = fpext float %17 to double
  %19 = fadd double %18, 1.000000e-01
  %20 = fptrunc double %19 to float
  store float %20, ptr %6, align 4, !tbaa !5
  br label %7, !llvm.loop !9

21:                                               ; preds = %7
  %22 = load float, ptr %5, align 4, !tbaa !5
  %23 = fpext float %22 to double
  %24 = fdiv double %23, 1.000000e+01
  %25 = fptrunc double %24 to float
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #2
  ret float %25
}

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 = !{!"float", !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 nounwind uwtable
declare dso_local noundef float @_Z4chi2ff(float noundef, float noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef float @_Z8probChi2ff(float noundef %0, float noundef %1) local_unnamed_addr #0 {
  %3 = fcmp ogt float %0, 0.000000e+00
  br i1 %3, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %2, %.lr.ph
  %.09 = phi float [ %8, %.lr.ph ], [ 0.000000e+00, %2 ]
  %.078 = phi float [ %5, %.lr.ph ], [ 0.000000e+00, %2 ]
  %4 = tail call noundef float @_Z4chi2ff(float noundef %.09, float noundef %1)
  %5 = fadd float %.078, %4
  %6 = fpext float %.09 to double
  %7 = fadd double %6, 1.000000e-01
  %8 = fptrunc double %7 to float
  %9 = fcmp olt float %8, %0
  br i1 %9, label %.lr.ph, label %._crit_edge, !llvm.loop !5

._crit_edge:                                      ; preds = %.lr.ph, %2
  %.07.lcssa = phi float [ 0.000000e+00, %2 ], [ %5, %.lr.ph ]
  %10 = fdiv float %.07.lcssa, 1.000000e+01
  ret float %10
}

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