; LLVM IR from tleonhardt/practical_cryptography_engineering :: mbedtls (pkwrite)

; 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"

@.str = external hidden unnamed_addr constant [28 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [26 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: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nounwind uwtable
declare dso_local i32 @mbedtls_pk_write_pubkey_der(ptr noundef, ptr noundef, i64 noundef) #1

; Function Attrs: nounwind uwtable
define dso_local i32 @mbedtls_pk_write_pubkey_pem(ptr noundef %0, ptr noundef %1, i64 noundef %2) #1 {
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i64, align 8
  %8 = alloca i32, align 4
  %9 = alloca [2086 x i8], align 16
  %10 = alloca i64, align 8
  %11 = alloca i32, align 4
  store ptr %0, ptr %5, align 8, !tbaa !5
  store ptr %1, ptr %6, align 8, !tbaa !5
  store i64 %2, ptr %7, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #3
  call void @llvm.lifetime.start.p0(i64 2086, ptr %9) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #3
  store i64 0, ptr %10, align 8, !tbaa !9
  %12 = load ptr, ptr %5, align 8, !tbaa !5
  %13 = getelementptr inbounds [2086 x i8], ptr %9, i64 0, i64 0
  %14 = call i32 @mbedtls_pk_write_pubkey_der(ptr noundef %12, ptr noundef %13, i64 noundef 2086)
  store i32 %14, ptr %8, align 4, !tbaa !11
  %15 = icmp slt i32 %14, 0
  br i1 %15, label %16, label %18

16:                                               ; preds = %3
  %17 = load i32, ptr %8, align 4, !tbaa !11
  store i32 %17, ptr %4, align 4
  store i32 1, ptr %11, align 4
  br label %34

18:                                               ; preds = %3
  %19 = getelementptr inbounds [2086 x i8], ptr %9, i64 0, i64 0
  %20 = getelementptr inbounds i8, ptr %19, i64 2086
  %21 = load i32, ptr %8, align 4, !tbaa !11
  %22 = sext i32 %21 to i64
  %23 = sub i64 0, %22
  %24 = getelementptr inbounds i8, ptr %20, i64 %23
  %25 = load i32, ptr %8, align 4, !tbaa !11
  %26 = sext i32 %25 to i64
  %27 = load ptr, ptr %6, align 8, !tbaa !5
  %28 = load i64, ptr %7, align 8, !tbaa !9
  %29 = call i32 @mbedtls_pem_write_buffer(ptr noundef @.str, ptr noundef @.str.1, ptr noundef %24, i64 noundef %26, ptr noundef %27, i64 noundef %28, ptr noundef %10)
  store i32 %29, ptr %8, align 4, !tbaa !11
  %30 = icmp ne i32 %29, 0
  br i1 %30, label %31, label %33

31:                                               ; preds = %18
  %32 = load i32, ptr %8, align 4, !tbaa !11
  store i32 %32, ptr %4, align 4
  store i32 1, ptr %11, align 4
  br label %34

33:                                               ; preds = %18
  store i32 0, ptr %4, align 4
  store i32 1, ptr %11, align 4
  br label %34

34:                                               ; preds = %33, %31, %16
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #3
  call void @llvm.lifetime.end.p0(i64 2086, ptr %9) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #3
  %35 = load i32, ptr %4, align 4
  ret i32 %35
}

declare i32 @mbedtls_pem_write_buffer(ptr noundef, ptr noundef, ptr noundef, i64 noundef, ptr noundef, i64 noundef, 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"}
!9 = !{!10, !10, i64 0}
!10 = !{!"long", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"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"

@.str = external hidden unnamed_addr constant [28 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [26 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: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nounwind uwtable
declare dso_local i32 @mbedtls_pk_write_pubkey_der(ptr noundef, ptr noundef, i64 noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
define dso_local i32 @mbedtls_pk_write_pubkey_pem(ptr noundef %0, ptr noundef %1, i64 noundef %2) local_unnamed_addr #1 {
  %4 = alloca [2086 x i8], align 16
  %5 = alloca i64, align 8
  call void @llvm.lifetime.start.p0(i64 2086, ptr nonnull %4) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %5) #3
  store i64 0, ptr %5, align 8, !tbaa !5
  %6 = call i32 @mbedtls_pk_write_pubkey_der(ptr noundef %0, ptr noundef nonnull %4, i64 noundef 2086)
  %7 = icmp slt i32 %6, 0
  br i1 %7, label %14, label %8

8:                                                ; preds = %3
  %9 = getelementptr inbounds i8, ptr %4, i64 2086
  %10 = zext nneg i32 %6 to i64
  %11 = sub nsw i64 0, %10
  %12 = getelementptr inbounds i8, ptr %9, i64 %11
  %13 = call i32 @mbedtls_pem_write_buffer(ptr noundef nonnull @.str, ptr noundef nonnull @.str.1, ptr noundef nonnull %12, i64 noundef %10, ptr noundef %1, i64 noundef %2, ptr noundef nonnull %5) #3
  br label %14

14:                                               ; preds = %8, %3
  %.0 = phi i32 [ %6, %3 ], [ %13, %8 ]
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %5) #3
  call void @llvm.lifetime.end.p0(i64 2086, ptr nonnull %4) #3
  ret i32 %.0
}

declare i32 @mbedtls_pem_write_buffer(ptr noundef, ptr noundef, ptr noundef, i64 noundef, ptr noundef, i64 noundef, ptr noundef) local_unnamed_addr #2

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


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