; LLVM IR from tleonhardt/practical_cryptography_engineering :: mbedtls (x509write_crt)

; 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.5 = external hidden unnamed_addr constant [29 x i8], align 1
@.str.6 = external hidden unnamed_addr constant [27 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_x509write_crt_der(ptr noundef, ptr noundef, i64 noundef, ptr noundef, ptr noundef) #1

; Function Attrs: nounwind uwtable
define dso_local i32 @mbedtls_x509write_crt_pem(ptr noundef %0, ptr noundef %1, i64 noundef %2, ptr noundef %3, ptr noundef %4) #1 {
  %6 = alloca i32, align 4
  %7 = alloca ptr, align 8
  %8 = alloca ptr, align 8
  %9 = alloca i64, align 8
  %10 = alloca ptr, align 8
  %11 = alloca ptr, align 8
  %12 = alloca i32, align 4
  %13 = alloca [4096 x i8], align 16
  %14 = alloca i64, align 8
  %15 = alloca i32, align 4
  store ptr %0, ptr %7, align 8, !tbaa !5
  store ptr %1, ptr %8, align 8, !tbaa !5
  store i64 %2, ptr %9, align 8, !tbaa !9
  store ptr %3, ptr %10, align 8, !tbaa !5
  store ptr %4, ptr %11, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %12) #3
  call void @llvm.lifetime.start.p0(i64 4096, ptr %13) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %14) #3
  store i64 0, ptr %14, align 8, !tbaa !9
  %16 = load ptr, ptr %7, align 8, !tbaa !5
  %17 = getelementptr inbounds [4096 x i8], ptr %13, i64 0, i64 0
  %18 = load ptr, ptr %10, align 8, !tbaa !5
  %19 = load ptr, ptr %11, align 8, !tbaa !5
  %20 = call i32 @mbedtls_x509write_crt_der(ptr noundef %16, ptr noundef %17, i64 noundef 4096, ptr noundef %18, ptr noundef %19)
  store i32 %20, ptr %12, align 4, !tbaa !11
  %21 = icmp slt i32 %20, 0
  br i1 %21, label %22, label %24

22:                                               ; preds = %5
  %23 = load i32, ptr %12, align 4, !tbaa !11
  store i32 %23, ptr %6, align 4
  store i32 1, ptr %15, align 4
  br label %40

24:                                               ; preds = %5
  %25 = getelementptr inbounds [4096 x i8], ptr %13, i64 0, i64 0
  %26 = getelementptr inbounds i8, ptr %25, i64 4096
  %27 = load i32, ptr %12, align 4, !tbaa !11
  %28 = sext i32 %27 to i64
  %29 = sub i64 0, %28
  %30 = getelementptr inbounds i8, ptr %26, i64 %29
  %31 = load i32, ptr %12, align 4, !tbaa !11
  %32 = sext i32 %31 to i64
  %33 = load ptr, ptr %8, align 8, !tbaa !5
  %34 = load i64, ptr %9, align 8, !tbaa !9
  %35 = call i32 @mbedtls_pem_write_buffer(ptr noundef @.str.5, ptr noundef @.str.6, ptr noundef %30, i64 noundef %32, ptr noundef %33, i64 noundef %34, ptr noundef %14)
  store i32 %35, ptr %12, align 4, !tbaa !11
  %36 = icmp ne i32 %35, 0
  br i1 %36, label %37, label %39

37:                                               ; preds = %24
  %38 = load i32, ptr %12, align 4, !tbaa !11
  store i32 %38, ptr %6, align 4
  store i32 1, ptr %15, align 4
  br label %40

39:                                               ; preds = %24
  store i32 0, ptr %6, align 4
  store i32 1, ptr %15, align 4
  br label %40

40:                                               ; preds = %39, %37, %22
  call void @llvm.lifetime.end.p0(i64 8, ptr %14) #3
  call void @llvm.lifetime.end.p0(i64 4096, ptr %13) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #3
  %41 = load i32, ptr %6, align 4
  ret i32 %41
}

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.5 = external hidden unnamed_addr constant [29 x i8], align 1
@.str.6 = external hidden unnamed_addr constant [27 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_x509write_crt_der(ptr noundef, ptr noundef, i64 noundef, ptr noundef, ptr noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
define dso_local i32 @mbedtls_x509write_crt_pem(ptr noundef %0, ptr noundef %1, i64 noundef %2, ptr noundef %3, ptr noundef %4) local_unnamed_addr #1 {
  %6 = alloca [4096 x i8], align 16
  %7 = alloca i64, align 8
  call void @llvm.lifetime.start.p0(i64 4096, ptr nonnull %6) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %7) #3
  store i64 0, ptr %7, align 8, !tbaa !5
  %8 = call i32 @mbedtls_x509write_crt_der(ptr noundef %0, ptr noundef nonnull %6, i64 noundef 4096, ptr noundef %3, ptr noundef %4)
  %9 = icmp slt i32 %8, 0
  br i1 %9, label %16, label %10

10:                                               ; preds = %5
  %11 = getelementptr inbounds i8, ptr %6, i64 4096
  %12 = zext nneg i32 %8 to i64
  %13 = sub nsw i64 0, %12
  %14 = getelementptr inbounds i8, ptr %11, i64 %13
  %15 = call i32 @mbedtls_pem_write_buffer(ptr noundef nonnull @.str.5, ptr noundef nonnull @.str.6, ptr noundef nonnull %14, i64 noundef %12, ptr noundef %1, i64 noundef %2, ptr noundef nonnull %7) #3
  br label %16

16:                                               ; preds = %10, %5
  %.0 = phi i32 [ %8, %5 ], [ %15, %10 ]
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %7) #3
  call void @llvm.lifetime.end.p0(i64 4096, ptr nonnull %6) #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