; LLVM IR from Dimandragon/non-parametric-dsp :: alglib-cpp/src/alglibinternal.ll (ZN11alglib_impl12safeminposrvEdddPNS_8ae_stateE)

; 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
define dso_local noundef double @_ZN11alglib_impl12safeminposrvEdddPNS_8ae_stateE(double noundef %0, double noundef %1, double noundef %2, ptr noundef %3) #1 {
  %5 = alloca double, align 8
  %6 = alloca double, align 8
  %7 = alloca double, align 8
  %8 = alloca ptr, align 8
  %9 = alloca double, align 8
  %10 = alloca double, align 8
  store double %0, ptr %5, align 8, !tbaa !5
  store double %1, ptr %6, align 8, !tbaa !5
  store double %2, ptr %7, align 8, !tbaa !5
  store ptr %3, ptr %8, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #2
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #2
  %11 = load double, ptr %6, align 8, !tbaa !5
  %12 = fcmp oge double %11, 1.000000e+00
  br i1 %12, label %13, label %26

13:                                               ; preds = %4
  %14 = load double, ptr %5, align 8, !tbaa !5
  %15 = load double, ptr %6, align 8, !tbaa !5
  %16 = fdiv double %14, %15
  store double %16, ptr %9, align 8, !tbaa !5
  %17 = load double, ptr %7, align 8, !tbaa !5
  store double %17, ptr %10, align 8, !tbaa !5
  %18 = load double, ptr %7, align 8, !tbaa !5
  %19 = load double, ptr %9, align 8, !tbaa !5
  %20 = fcmp ogt double %18, %19
  br i1 %20, label %21, label %23

21:                                               ; preds = %13
  %22 = load double, ptr %9, align 8, !tbaa !5
  store double %22, ptr %10, align 8, !tbaa !5
  br label %25

23:                                               ; preds = %13
  %24 = load double, ptr %7, align 8, !tbaa !5
  store double %24, ptr %10, align 8, !tbaa !5
  br label %25

25:                                               ; preds = %23, %21
  br label %39

26:                                               ; preds = %4
  %27 = load double, ptr %5, align 8, !tbaa !5
  %28 = load double, ptr %7, align 8, !tbaa !5
  %29 = load double, ptr %6, align 8, !tbaa !5
  %30 = fmul double %28, %29
  %31 = fcmp olt double %27, %30
  br i1 %31, label %32, label %36

32:                                               ; preds = %26
  %33 = load double, ptr %5, align 8, !tbaa !5
  %34 = load double, ptr %6, align 8, !tbaa !5
  %35 = fdiv double %33, %34
  store double %35, ptr %10, align 8, !tbaa !5
  br label %38

36:                                               ; preds = %26
  %37 = load double, ptr %7, align 8, !tbaa !5
  store double %37, ptr %10, align 8, !tbaa !5
  br label %38

38:                                               ; preds = %36, %32
  br label %39

39:                                               ; preds = %38, %25
  %40 = load double, ptr %10, align 8, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #2
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #2
  ret double %40
}

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 = !{!"any pointer", !7, i64 0}


; 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 double @_ZN11alglib_impl12safeminposrvEdddPNS_8ae_stateE(double noundef %0, double noundef %1, double noundef %2, ptr nocapture noundef readnone %3) local_unnamed_addr #0 {
  %5 = fcmp ult double %1, 1.000000e+00
  br i1 %5, label %9, label %6

6:                                                ; preds = %4
  %7 = fdiv double %0, %1
  %8 = fcmp olt double %7, %2
  %. = select i1 %8, double %7, double %2
  br label %14

9:                                                ; preds = %4
  %10 = fmul double %1, %2
  %11 = fcmp ogt double %10, %0
  br i1 %11, label %12, label %14

12:                                               ; preds = %9
  %13 = fdiv double %0, %1
  br label %14

14:                                               ; preds = %9, %6, %12
  %.0 = phi double [ %13, %12 ], [ %., %6 ], [ %2, %9 ]
  ret double %.0
}

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,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass