; LLVM IR from openssl/openssl :: crypto/evp (ec_ctrl)

; 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"

%struct.ossl_param_st = type { ptr, i32, ptr, i64, i64 }

@.str.1 = external hidden unnamed_addr constant [70 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [11 x i8], align 1
@__func__.EVP_PKEY_CTX_get_ecdh_kdf_outlen = external hidden unnamed_addr constant [33 x i8], align 1

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

; Function Attrs: inlinehint nounwind uwtable
declare hidden i32 @evp_pkey_ctx_getset_ecdh_param_checks(ptr noundef) #1

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #2

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

declare void @OSSL_PARAM_construct_end(ptr dead_on_unwind writable sret(%struct.ossl_param_st) align 8) #3

declare void @ERR_new() #3

declare void @ERR_set_debug(ptr noundef, i32 noundef, ptr noundef) #3

declare void @ERR_set_error(i32 noundef, i32 noundef, ptr noundef, ...) #3

declare i32 @evp_pkey_ctx_get_params_strict(ptr noundef, ptr noundef) #3

declare void @OSSL_PARAM_construct_size_t(ptr dead_on_unwind writable sret(%struct.ossl_param_st) align 8, ptr noundef, ptr noundef) #3

; Function Attrs: nounwind uwtable
define dso_local i32 @EVP_PKEY_CTX_get_ecdh_kdf_outlen(ptr noundef %0, ptr noundef %1) #4 {
  %3 = alloca i32, align 4
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca i64, align 8
  %7 = alloca i32, align 4
  %8 = alloca [2 x %struct.ossl_param_st], align 16
  %9 = alloca ptr, align 8
  %10 = alloca i32, align 4
  %11 = alloca %struct.ossl_param_st, align 8
  %12 = alloca %struct.ossl_param_st, align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #5
  store i64 4294967295, ptr %6, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #5
  call void @llvm.lifetime.start.p0(i64 80, ptr %8) #5
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #5
  %13 = getelementptr inbounds [2 x %struct.ossl_param_st], ptr %8, i64 0, i64 0
  store ptr %13, ptr %9, align 8, !tbaa !5
  %14 = load ptr, ptr %4, align 8, !tbaa !5
  %15 = call i32 @evp_pkey_ctx_getset_ecdh_param_checks(ptr noundef %14)
  store i32 %15, ptr %7, align 4, !tbaa !11
  %16 = load i32, ptr %7, align 4, !tbaa !11
  %17 = icmp ne i32 %16, 1
  br i1 %17, label %18, label %20

18:                                               ; preds = %2
  %19 = load i32, ptr %7, align 4, !tbaa !11
  store i32 %19, ptr %3, align 4
  store i32 1, ptr %10, align 4
  br label %42

20:                                               ; preds = %2
  %21 = load ptr, ptr %9, align 8, !tbaa !5
  %22 = getelementptr inbounds %struct.ossl_param_st, ptr %21, i32 1
  store ptr %22, ptr %9, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 40, ptr %11) #5
  call void @OSSL_PARAM_construct_size_t(ptr dead_on_unwind writable sret(%struct.ossl_param_st) align 8 %11, ptr noundef @.str.2, ptr noundef %6)
  call void @llvm.memcpy.p0.p0.i64(ptr align 8 %21, ptr align 8 %11, i64 40, i1 false), !tbaa.struct !13
  call void @llvm.lifetime.end.p0(i64 40, ptr %11) #5
  %23 = load ptr, ptr %9, align 8, !tbaa !5
  %24 = getelementptr inbounds %struct.ossl_param_st, ptr %23, i32 1
  store ptr %24, ptr %9, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 40, ptr %12) #5
  call void @OSSL_PARAM_construct_end(ptr dead_on_unwind writable sret(%struct.ossl_param_st) align 8 %12)
  call void @llvm.memcpy.p0.p0.i64(ptr align 8 %23, ptr align 8 %12, i64 40, i1 false), !tbaa.struct !13
  call void @llvm.lifetime.end.p0(i64 40, ptr %12) #5
  %25 = load ptr, ptr %4, align 8, !tbaa !5
  %26 = getelementptr inbounds [2 x %struct.ossl_param_st], ptr %8, i64 0, i64 0
  %27 = call i32 @evp_pkey_ctx_get_params_strict(ptr noundef %25, ptr noundef %26)
  store i32 %27, ptr %7, align 4, !tbaa !11
  %28 = load i32, ptr %7, align 4, !tbaa !11
  switch i32 %28, label %39 [
    i32 -2, label %29
    i32 1, label %30
  ]

29:                                               ; preds = %20
  call void @ERR_new()
  call void @ERR_set_debug(ptr noundef @.str.1, i32 noundef 194, ptr noundef @__func__.EVP_PKEY_CTX_get_ecdh_kdf_outlen)
  call void (i32, i32, ptr, ...) @ERR_set_error(i32 noundef 6, i32 noundef 147, ptr noundef null)
  br label %40

30:                                               ; preds = %20
  %31 = load i64, ptr %6, align 8, !tbaa !9
  %32 = icmp ule i64 %31, 2147483647
  br i1 %32, label %33, label %37

33:                                               ; preds = %30
  %34 = load i64, ptr %6, align 8, !tbaa !9
  %35 = trunc i64 %34 to i32
  %36 = load ptr, ptr %5, align 8, !tbaa !5
  store i32 %35, ptr %36, align 4, !tbaa !11
  br label %38

37:                                               ; preds = %30
  store i32 -1, ptr %7, align 4, !tbaa !11
  br label %38

38:                                               ; preds = %37, %33
  br label %40

39:                                               ; preds = %20
  store i32 -1, ptr %7, align 4, !tbaa !11
  br label %40

40:                                               ; preds = %39, %38, %29
  %41 = load i32, ptr %7, align 4, !tbaa !11
  store i32 %41, ptr %3, align 4
  store i32 1, ptr %10, align 4
  br label %42

42:                                               ; preds = %40, %18
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #5
  call void @llvm.lifetime.end.p0(i64 80, ptr %8) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #5
  %43 = load i32, ptr %3, align 4
  ret i32 %43
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { inlinehint 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 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { "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 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 #5 = { 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 = !{!"long", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"int", !7, i64 0}
!13 = !{i64 0, i64 8, !5, i64 8, i64 4, !11, i64 16, i64 8, !5, i64 24, i64 8, !9, i64 32, i64 8, !9}


; 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"

%struct.ossl_param_st = type { ptr, i32, ptr, i64, i64 }

@.str.1 = external hidden unnamed_addr constant [70 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [11 x i8], align 1
@__func__.EVP_PKEY_CTX_get_ecdh_kdf_outlen = external hidden unnamed_addr constant [33 x i8], align 1

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

; Function Attrs: inlinehint nounwind uwtable
declare hidden i32 @evp_pkey_ctx_getset_ecdh_param_checks(ptr noundef) local_unnamed_addr #1

; Function Attrs: mustprogress nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #2

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

declare void @OSSL_PARAM_construct_end(ptr dead_on_unwind writable sret(%struct.ossl_param_st) align 8) local_unnamed_addr #3

declare void @ERR_new() local_unnamed_addr #3

declare void @ERR_set_debug(ptr noundef, i32 noundef, ptr noundef) local_unnamed_addr #3

declare void @ERR_set_error(i32 noundef, i32 noundef, ptr noundef, ...) local_unnamed_addr #3

declare i32 @evp_pkey_ctx_get_params_strict(ptr noundef, ptr noundef) local_unnamed_addr #3

declare void @OSSL_PARAM_construct_size_t(ptr dead_on_unwind writable sret(%struct.ossl_param_st) align 8, ptr noundef, ptr noundef) local_unnamed_addr #3

; Function Attrs: nounwind uwtable
define dso_local i32 @EVP_PKEY_CTX_get_ecdh_kdf_outlen(ptr noundef %0, ptr nocapture noundef writeonly %1) local_unnamed_addr #4 {
  %3 = alloca i64, align 8
  %4 = alloca [2 x %struct.ossl_param_st], align 16
  %5 = alloca %struct.ossl_param_st, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %3) #5
  store i64 4294967295, ptr %3, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 80, ptr nonnull %4) #5
  %6 = tail call i32 @evp_pkey_ctx_getset_ecdh_param_checks(ptr noundef %0)
  %.not = icmp eq i32 %6, 1
  br i1 %.not, label %7, label %16

7:                                                ; preds = %2
  %8 = getelementptr inbounds i8, ptr %4, i64 40
  call void @OSSL_PARAM_construct_size_t(ptr dead_on_unwind nonnull writable sret(%struct.ossl_param_st) align 8 %4, ptr noundef nonnull @.str.2, ptr noundef nonnull %3) #5
  call void @llvm.lifetime.start.p0(i64 40, ptr nonnull %5) #5
  call void @OSSL_PARAM_construct_end(ptr dead_on_unwind nonnull writable sret(%struct.ossl_param_st) align 8 %5) #5
  call void @llvm.memcpy.p0.p0.i64(ptr noundef nonnull align 8 dereferenceable(40) %8, ptr noundef nonnull align 8 dereferenceable(40) %5, i64 40, i1 false), !tbaa.struct !9
  call void @llvm.lifetime.end.p0(i64 40, ptr nonnull %5) #5
  %9 = call i32 @evp_pkey_ctx_get_params_strict(ptr noundef %0, ptr noundef nonnull %4) #5
  switch i32 %9, label %16 [
    i32 -2, label %10
    i32 1, label %11
  ]

10:                                               ; preds = %7
  call void @ERR_new() #5
  call void @ERR_set_debug(ptr noundef nonnull @.str.1, i32 noundef 194, ptr noundef nonnull @__func__.EVP_PKEY_CTX_get_ecdh_kdf_outlen) #5
  call void (i32, i32, ptr, ...) @ERR_set_error(i32 noundef 6, i32 noundef 147, ptr noundef null) #5
  br label %16

11:                                               ; preds = %7
  %12 = load i64, ptr %3, align 8, !tbaa !5
  %13 = icmp ult i64 %12, 2147483648
  br i1 %13, label %14, label %16

14:                                               ; preds = %11
  %15 = trunc nuw nsw i64 %12 to i32
  store i32 %15, ptr %1, align 4, !tbaa !12
  br label %16

16:                                               ; preds = %10, %14, %11, %7, %2
  %.09 = phi i32 [ %6, %2 ], [ 1, %14 ], [ -2, %10 ], [ -1, %11 ], [ -1, %7 ]
  call void @llvm.lifetime.end.p0(i64 80, ptr nonnull %4) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #5
  ret i32 %.09
}

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { inlinehint 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 = { mustprogress nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { "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 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 #5 = { 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", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{i64 0, i64 8, !10, i64 8, i64 4, !12, i64 16, i64 8, !10, i64 24, i64 8, !5, i64 32, i64 8, !5}
!10 = !{!11, !11, i64 0}
!11 = !{!"any pointer", !7, i64 0}
!12 = !{!13, !13, i64 0}
!13 = !{!"int", !7, i64 0}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,MemCpyOptPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass