; LLVM IR from EbTech/Elo-MMR :: deprecated/cpp/trueskill/src/ndtr.ll (Z4ndtrd)

; 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"

@SQRTH = external global double, align 8

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef double @_Z4ndtrd(double noundef %0) #0 {
  %2 = alloca double, align 8
  %3 = alloca double, align 8
  %4 = alloca double, align 8
  %5 = alloca double, align 8
  store double %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #3
  %6 = load double, ptr %2, align 8, !tbaa !5
  %7 = load double, ptr @SQRTH, align 8, !tbaa !5
  %8 = fmul double %6, %7
  store double %8, ptr %3, align 8, !tbaa !5
  %9 = load double, ptr %3, align 8, !tbaa !5
  %10 = call double @llvm.fabs.f64(double %9)
  store double %10, ptr %5, align 8, !tbaa !5
  %11 = load double, ptr %5, align 8, !tbaa !5
  %12 = load double, ptr @SQRTH, align 8, !tbaa !5
  %13 = fcmp olt double %11, %12
  br i1 %13, label %14, label %18

14:                                               ; preds = %1
  %15 = load double, ptr %3, align 8, !tbaa !5
  %16 = call double @erf(double noundef %15) #3
  %17 = call double @llvm.fmuladd.f64(double 5.000000e-01, double %16, double 5.000000e-01)
  store double %17, ptr %4, align 8, !tbaa !5
  br label %28

18:                                               ; preds = %1
  %19 = load double, ptr %5, align 8, !tbaa !5
  %20 = call double @erfc(double noundef %19) #3
  %21 = fmul double 5.000000e-01, %20
  store double %21, ptr %4, align 8, !tbaa !5
  %22 = load double, ptr %3, align 8, !tbaa !5
  %23 = fcmp ogt double %22, 0.000000e+00
  br i1 %23, label %24, label %27

24:                                               ; preds = %18
  %25 = load double, ptr %4, align 8, !tbaa !5
  %26 = fsub double 1.000000e+00, %25
  store double %26, ptr %4, align 8, !tbaa !5
  br label %27

27:                                               ; preds = %24, %18
  br label %28

28:                                               ; preds = %27, %14
  %29 = load double, ptr %4, align 8, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #3
  ret double %29
}

; 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 speculatable willreturn memory(none)
declare double @llvm.fabs.f64(double) #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local double @erf(double noundef) #0

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare double @llvm.fmuladd.f64(double, double, double) #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local double @erfc(double noundef) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #3 = { 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"}


; 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"

@SQRTH = external local_unnamed_addr global double, align 8

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef double @_Z4ndtrd(double noundef %0) local_unnamed_addr #0 {
  %2 = load double, ptr @SQRTH, align 8, !tbaa !5
  %3 = fmul double %2, %0
  %4 = tail call double @llvm.fabs.f64(double %3)
  %5 = fcmp olt double %4, %2
  br i1 %5, label %6, label %9

6:                                                ; preds = %1
  %7 = tail call double @erf(double noundef %3) #3
  %8 = tail call double @llvm.fmuladd.f64(double %7, double 5.000000e-01, double 5.000000e-01)
  br label %15

9:                                                ; preds = %1
  %10 = tail call double @erfc(double noundef %4) #3
  %11 = fmul double %10, 5.000000e-01
  %12 = fcmp ogt double %3, 0.000000e+00
  br i1 %12, label %13, label %15

13:                                               ; preds = %9
  %14 = fsub double 1.000000e+00, %11
  br label %15

15:                                               ; preds = %9, %13, %6
  %.0 = phi double [ %8, %6 ], [ %14, %13 ], [ %11, %9 ]
  ret double %.0
}

; Function Attrs: mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare double @llvm.fabs.f64(double) #1

; Function Attrs: mustprogress nofree nounwind willreturn memory(write) uwtable
declare dso_local double @erf(double noundef) local_unnamed_addr #2

; Function Attrs: mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare double @llvm.fmuladd.f64(double, double, double) #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local double @erfc(double noundef) local_unnamed_addr #0

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 nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #2 = { mustprogress nofree nounwind willreturn memory(write) 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 = { 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"}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass