; LLVM IR from gost-engine/engine :: gost_ameth (gost_get0_priv_key)

; 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 uwtable
define dso_local ptr @gost_get0_priv_key(ptr noundef %0) #1 {
  %2 = alloca ptr, align 8
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  %6 = load ptr, ptr %3, align 8, !tbaa !5
  %7 = call i32 @EVP_PKEY_get_base_id(ptr noundef %6)
  switch i32 %7, label %19 [
    i32 980, label %8
    i32 979, label %8
    i32 811, label %8
    i32 817, label %8
  ]

8:                                                ; preds = %1, %1, %1, %1
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #3
  %9 = load ptr, ptr %3, align 8, !tbaa !5
  %10 = call ptr @EVP_PKEY_get0(ptr noundef %9)
  store ptr %10, ptr %4, align 8, !tbaa !5
  %11 = load ptr, ptr %4, align 8, !tbaa !5
  %12 = icmp ne ptr %11, null
  br i1 %12, label %13, label %16

13:                                               ; preds = %8
  %14 = load ptr, ptr %4, align 8, !tbaa !5
  %15 = call ptr @EC_KEY_get0_private_key(ptr noundef %14)
  store ptr %15, ptr %2, align 8
  store i32 1, ptr %5, align 4
  br label %17

16:                                               ; preds = %8
  store i32 2, ptr %5, align 4
  br label %17

17:                                               ; preds = %16, %13
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #3
  %18 = load i32, ptr %5, align 4
  switch i32 %18, label %22 [
    i32 1, label %20
    i32 2, label %19
  ]

19:                                               ; preds = %17, %1
  store ptr null, ptr %2, align 8
  br label %20

20:                                               ; preds = %19, %17
  %21 = load ptr, ptr %2, align 8
  ret ptr %21

22:                                               ; preds = %17
  unreachable
}

declare i32 @EVP_PKEY_get_base_id(ptr noundef) #2

declare ptr @EVP_PKEY_get0(ptr noundef) #2

declare ptr @EC_KEY_get0_private_key(ptr noundef) #2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { "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"}


; 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 ptr @gost_get0_priv_key(ptr noundef %0) local_unnamed_addr #0 {
  %2 = tail call i32 @EVP_PKEY_get_base_id(ptr noundef %0) #2
  switch i32 %2, label %6 [
    i32 980, label %3
    i32 979, label %3
    i32 811, label %3
    i32 817, label %3
  ]

3:                                                ; preds = %1, %1, %1, %1
  %4 = tail call ptr @EVP_PKEY_get0(ptr noundef %0) #2
  %.not = icmp eq ptr %4, null
  br i1 %.not, label %6, label %.thread

.thread:                                          ; preds = %3
  %5 = tail call ptr @EC_KEY_get0_private_key(ptr noundef nonnull %4) #2
  br label %6

6:                                                ; preds = %3, %1, %.thread
  %.1 = phi ptr [ %5, %.thread ], [ null, %1 ], [ null, %3 ]
  ret ptr %.1
}

declare i32 @EVP_PKEY_get_base_id(ptr noundef) local_unnamed_addr #1

declare ptr @EVP_PKEY_get0(ptr noundef) local_unnamed_addr #1

declare ptr @EC_KEY_get0_private_key(ptr 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 = { "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: CorrelatedValuePropagationPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,SROAPass,SimplifyCFGPass,TailCallElimPass