; LLVM IR from ryanlayer/giggle :: src/kfunc.ll (lbinom)

; 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: nounwind uwtable
define dso_local x86_fp80 @_lbinom(i64 noundef %0, i64 noundef %1) #0 {
  %3 = alloca x86_fp80, align 16
  %4 = alloca i64, align 8
  %5 = alloca i64, align 8
  store i64 %0, ptr %4, align 8, !tbaa !5
  store i64 %1, ptr %5, align 8, !tbaa !5
  %6 = load i64, ptr %5, align 8, !tbaa !5
  %7 = icmp eq i64 %6, 0
  br i1 %7, label %12, label %8

8:                                                ; preds = %2
  %9 = load i64, ptr %4, align 8, !tbaa !5
  %10 = load i64, ptr %5, align 8, !tbaa !5
  %11 = icmp eq i64 %9, %10
  br i1 %11, label %12, label %13

12:                                               ; preds = %8, %2
  store x86_fp80 0xK00000000000000000000, ptr %3, align 16
  br label %30

13:                                               ; preds = %8
  %14 = load i64, ptr %4, align 8, !tbaa !5
  %15 = add nsw i64 %14, 1
  %16 = sitofp i64 %15 to x86_fp80
  %17 = call x86_fp80 @lgammal(x86_fp80 noundef %16) #2
  %18 = load i64, ptr %5, align 8, !tbaa !5
  %19 = add nsw i64 %18, 1
  %20 = sitofp i64 %19 to x86_fp80
  %21 = call x86_fp80 @lgammal(x86_fp80 noundef %20) #2
  %22 = fsub x86_fp80 %17, %21
  %23 = load i64, ptr %4, align 8, !tbaa !5
  %24 = load i64, ptr %5, align 8, !tbaa !5
  %25 = sub nsw i64 %23, %24
  %26 = add nsw i64 %25, 1
  %27 = sitofp i64 %26 to x86_fp80
  %28 = call x86_fp80 @lgammal(x86_fp80 noundef %27) #2
  %29 = fsub x86_fp80 %22, %28
  store x86_fp80 %29, ptr %3, align 16
  br label %30

30:                                               ; preds = %13, %12
  %31 = load x86_fp80, ptr %3, align 16
  ret x86_fp80 %31
}

; Function Attrs: nounwind
declare x86_fp80 @lgammal(x86_fp80 noundef) #1

attributes #0 = { 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 = { 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 = { 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 = !{!"long long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/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"

; Function Attrs: nounwind uwtable
define dso_local x86_fp80 @_lbinom(i64 noundef %0, i64 noundef %1) local_unnamed_addr #0 {
  %3 = icmp eq i64 %1, 0
  %4 = icmp eq i64 %0, %1
  %or.cond = or i1 %3, %4
  br i1 %or.cond, label %17, label %5

5:                                                ; preds = %2
  %6 = add i64 %0, 1
  %7 = sitofp i64 %6 to x86_fp80
  %8 = tail call x86_fp80 @lgammal(x86_fp80 noundef %7) #2
  %9 = add nsw i64 %1, 1
  %10 = sitofp i64 %9 to x86_fp80
  %11 = tail call x86_fp80 @lgammal(x86_fp80 noundef %10) #2
  %12 = fsub x86_fp80 %8, %11
  %13 = sub i64 %6, %1
  %14 = sitofp i64 %13 to x86_fp80
  %15 = tail call x86_fp80 @lgammal(x86_fp80 noundef %14) #2
  %16 = fsub x86_fp80 %12, %15
  br label %17

17:                                               ; preds = %2, %5
  %.0 = phi x86_fp80 [ %16, %5 ], [ 0xK00000000000000000000, %2 ]
  ret x86_fp80 %.0
}

; Function Attrs: nounwind
declare x86_fp80 @lgammal(x86_fp80 noundef) local_unnamed_addr #1

attributes #0 = { 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 = { 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 = { 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)"}


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