; LLVM IR from openssl/openssl :: crypto/ffc (ffc_key_validate)

; 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

declare i32 @BN_cmp(ptr noundef, ptr noundef) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nounwind uwtable
define dso_local i32 @ossl_ffc_validate_private_key(ptr noundef %0, ptr noundef %1, ptr noundef %2) #2 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  store ptr %2, ptr %6, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #3
  store i32 0, ptr %7, align 4, !tbaa !9
  %8 = load ptr, ptr %6, align 8, !tbaa !5
  store i32 0, ptr %8, align 4, !tbaa !9
  %9 = load ptr, ptr %5, align 8, !tbaa !5
  %10 = icmp eq ptr %9, null
  br i1 %10, label %14, label %11

11:                                               ; preds = %3
  %12 = load ptr, ptr %4, align 8, !tbaa !5
  %13 = icmp eq ptr %12, null
  br i1 %13, label %14, label %16

14:                                               ; preds = %11, %3
  %15 = load ptr, ptr %6, align 8, !tbaa !5
  store i32 64, ptr %15, align 4, !tbaa !9
  br label %35

16:                                               ; preds = %11
  %17 = load ptr, ptr %5, align 8, !tbaa !5
  %18 = call ptr @BN_value_one()
  %19 = call i32 @BN_cmp(ptr noundef %17, ptr noundef %18)
  %20 = icmp slt i32 %19, 0
  br i1 %20, label %21, label %25

21:                                               ; preds = %16
  %22 = load ptr, ptr %6, align 8, !tbaa !5
  %23 = load i32, ptr %22, align 4, !tbaa !9
  %24 = or i32 %23, 16
  store i32 %24, ptr %22, align 4, !tbaa !9
  br label %35

25:                                               ; preds = %16
  %26 = load ptr, ptr %5, align 8, !tbaa !5
  %27 = load ptr, ptr %4, align 8, !tbaa !5
  %28 = call i32 @BN_cmp(ptr noundef %26, ptr noundef %27)
  %29 = icmp sge i32 %28, 0
  br i1 %29, label %30, label %34

30:                                               ; preds = %25
  %31 = load ptr, ptr %6, align 8, !tbaa !5
  %32 = load i32, ptr %31, align 4, !tbaa !9
  %33 = or i32 %32, 32
  store i32 %33, ptr %31, align 4, !tbaa !9
  br label %35

34:                                               ; preds = %25
  store i32 1, ptr %7, align 4, !tbaa !9
  br label %35

35:                                               ; preds = %34, %30, %21, %14
  %36 = load i32, ptr %7, align 4, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #3
  ret i32 %36
}

declare ptr @BN_value_one() #1

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { "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 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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !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"

declare i32 @BN_cmp(ptr noundef, ptr noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local range(i32 0, 2) i32 @ossl_ffc_validate_private_key(ptr noundef %0, ptr noundef %1, ptr nocapture noundef %2) local_unnamed_addr #1 {
  store i32 0, ptr %2, align 4, !tbaa !5
  %4 = icmp eq ptr %1, null
  %5 = icmp eq ptr %0, null
  %or.cond = or i1 %5, %4
  br i1 %or.cond, label %.sink.split, label %6

6:                                                ; preds = %3
  %7 = tail call ptr @BN_value_one() #2
  %8 = tail call i32 @BN_cmp(ptr noundef nonnull %1, ptr noundef %7) #2
  %9 = icmp slt i32 %8, 0
  br i1 %9, label %.sink.split.sink.split, label %10

10:                                               ; preds = %6
  %11 = tail call i32 @BN_cmp(ptr noundef nonnull %1, ptr noundef nonnull %0) #2
  %12 = icmp sgt i32 %11, -1
  br i1 %12, label %.sink.split.sink.split, label %15

.sink.split.sink.split:                           ; preds = %10, %6
  %.sink13 = phi i32 [ 16, %6 ], [ 32, %10 ]
  %13 = load i32, ptr %2, align 4, !tbaa !5
  %14 = or i32 %13, %.sink13
  br label %.sink.split

.sink.split:                                      ; preds = %.sink.split.sink.split, %3
  %.sink = phi i32 [ 64, %3 ], [ %14, %.sink.split.sink.split ]
  store i32 %.sink, ptr %2, align 4, !tbaa !5
  br label %15

15:                                               ; preds = %.sink.split, %10
  %.0 = phi i32 [ 1, %10 ], [ 0, %.sink.split ]
  ret i32 %.0
}

declare ptr @BN_value_one() local_unnamed_addr #0

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


; Effective O3 passes: CorrelatedValuePropagationPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass