; LLVM IR from CLASS-SZ/class_sz :: class-sz/source (background)

; 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: nounwind
declare double @pow(double noundef, double noundef) #1

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

; Function Attrs: nounwind uwtable
define dso_local i32 @background_ncdm_test_function(ptr noundef %0, double noundef %1, ptr noundef %2) #3 {
  %4 = alloca ptr, align 8
  %5 = alloca double, align 8
  %6 = alloca ptr, align 8
  %7 = alloca double, align 8
  %8 = alloca double, align 8
  %9 = alloca double, align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store double %1, ptr %5, align 8, !tbaa !9
  store ptr %2, ptr %6, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #4
  store double 0x3FE1BF52CE8B6C23, ptr %7, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #4
  %10 = call double @pow(double noundef 0x400921FB54442D18, double noundef 4.000000e+00) #4
  %11 = fmul double 7.000000e+00, %10
  %12 = fdiv double 1.200000e+02, %11
  store double %12, ptr %8, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #4
  store double 0x3FA5F1F6A4402C47, ptr %9, align 8, !tbaa !9
  %13 = call double @pow(double noundef 0x401921FB54442D18, double noundef 3.000000e+00) #4
  %14 = fdiv double %13, 6.000000e+00
  %15 = load double, ptr %7, align 8, !tbaa !9
  %16 = load double, ptr %5, align 8, !tbaa !9
  %17 = fmul double %15, %16
  %18 = load double, ptr %5, align 8, !tbaa !9
  %19 = load double, ptr %8, align 8, !tbaa !9
  %20 = load double, ptr %5, align 8, !tbaa !9
  %21 = fmul double %19, %20
  %22 = load double, ptr %5, align 8, !tbaa !9
  %23 = fmul double %21, %22
  %24 = load double, ptr %5, align 8, !tbaa !9
  %25 = fmul double %23, %24
  %26 = fneg double %25
  %27 = call double @llvm.fmuladd.f64(double %17, double %18, double %26)
  %28 = load double, ptr %9, align 8, !tbaa !9
  %29 = load double, ptr %5, align 8, !tbaa !9
  %30 = fmul double %28, %29
  %31 = load double, ptr %5, align 8, !tbaa !9
  %32 = fmul double %30, %31
  %33 = load double, ptr %5, align 8, !tbaa !9
  %34 = fmul double %32, %33
  %35 = load double, ptr %5, align 8, !tbaa !9
  %36 = fneg double %34
  %37 = call double @llvm.fmuladd.f64(double %36, double %35, double %27)
  %38 = fmul double %14, %37
  %39 = load ptr, ptr %6, align 8, !tbaa !5
  store double %38, ptr %39, align 8, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #4
  ret i32 0
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { nounwind "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 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #3 = { 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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"double", !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 nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare double @llvm.fmuladd.f64(double, double, double) #0

; Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: write) uwtable
define dso_local noundef i32 @background_ncdm_test_function(ptr nocapture noundef readnone %0, double noundef %1, ptr nocapture noundef writeonly %2) local_unnamed_addr #1 {
  %4 = fmul double %1, 0x3FE1BF52CE8B6C23
  %5 = fmul double %1, 0xBFC686C8961A01D7
  %6 = fmul double %5, %1
  %7 = fmul double %6, %1
  %8 = tail call double @llvm.fmuladd.f64(double %4, double %1, double %7)
  %9 = fmul double %1, 0xBFA5F1F6A4402C47
  %10 = fmul double %9, %1
  %11 = fmul double %10, %1
  %12 = tail call double @llvm.fmuladd.f64(double %11, double %1, double %8)
  %13 = fmul double %12, 0x4044ABBCE625BE52
  store double %13, ptr %2, align 8, !tbaa !5
  ret i32 0
}

attributes #0 = { mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #1 = { mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: 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" }

!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/C++ TBAA"}


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