compiler | Compiler Course Projects

 by   ksu-cis-706 HTML Version: Current License: No License

kandi X-RAY | compiler Summary

kandi X-RAY | compiler Summary

compiler is a HTML library. compiler has no bugs, it has no vulnerabilities and it has low support. You can download it from GitHub.

This repository hosts the StaticJava Compiler (sjc) source code for K-State CIS 706 graduate course on Translator Design I.
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              compiler has a low active ecosystem.
              It has 9 star(s) with 8 fork(s). There are 2 watchers for this library.
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              It had no major release in the last 6 months.
              compiler has no issues reported. There are no pull requests.
              It has a neutral sentiment in the developer community.
              The latest version of compiler is current.

            kandi-Quality Quality

              compiler has no bugs reported.

            kandi-Security Security

              compiler has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

            kandi-License License

              compiler does not have a standard license declared.
              Check the repository for any license declaration and review the terms closely.
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              Without a license, all rights are reserved, and you cannot use the library in your applications.

            kandi-Reuse Reuse

              compiler releases are not available. You will need to build from source code and install.
              Installation instructions are not available. Examples and code snippets are available.

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            compiler Key Features

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            compiler Examples and Code Snippets

            No Code Snippets are available at this moment for compiler.

            Community Discussions

            QUESTION

            Clang errors "expected register" with inline x86 assembly (works with GCC)
            Asked 2021-Jun-16 at 00:48

            I wrote a demo with some inline assembly (showing how to shift an array of memory right one bit) and it compiles and functions fine in GCC. However, the with Clang, I'm not sure if it's generating bad code or what but it's unhappy that I'm using memory despite the "rm" constraint.

            I've tried many compilers and versions via Godbolt and while it works on all x86/x86_64 versions of GCC, it fails with all versions of Clang. I'm unsure if the problem is my code or if I found a compiler bug.

            Code:

            ...

            ANSWER

            Answered 2021-Jun-16 at 00:48

            I'm unsure if the problem is my code or if I found a compiler bug.

            The problem is your code. In GNU assembler, parentheses are used to dereference like unary * is in C, and you can only dereference a register, not memory. As such, writing 12(%0) in the assembly when %0 might be memory is wrong. It only happens to work in GCC because GCC chooses to use a register for "rm" there, while Clang chooses to use memory. You should use "r" (bytes) instead.

            Also, you need to tell the compiler that your assembly is going to modify the array, either with a memory clobber or by adding *(unsigned char (*)[16])bytes as an output. Right now, it's allowed to optimize your printf to just hardcode what the values were at the beginning of the program.

            Fixed code:

            Source https://stackoverflow.com/questions/67993984

            QUESTION

            Parallelize histogram creation in c++ with futures: how to use a template function with future?
            Asked 2021-Jun-16 at 00:46

            Giving a bit of context. I'm using c++17. I'm using pointer T* data because this will interop with cuda code. I'm trying write a parallel version (on CPU) of a histogram creator. The sequential version:

            ...

            ANSWER

            Answered 2021-Jun-16 at 00:46

            The issue you are having has nothing to do with templates. You cannot invoke std::async() on a member function without binding it to an instance. Wrapping the call in a lambda does the trick.

            Here's an example:

            Source https://stackoverflow.com/questions/67994778

            QUESTION

            Django says field does not exist when it does exist
            Asked 2021-Jun-15 at 20:06

            So I created a poll model in my Django app. I'm going thorugh the polling app tutorial posted on the Django website, however, I'm using a remote MySQL database rather than a SQLite database.

            ...

            ANSWER

            Answered 2021-Jun-15 at 20:06

            I'm thinking the suspect is an unsuccessful migration. Let's undo it and try again

            Source https://stackoverflow.com/questions/67992523

            QUESTION

            Is there a way to do conditional select statements in SQLite?
            Asked 2021-Jun-15 at 19:54

            I am trying to create an app in which the user has the option to query the database by entering information into one of two entry boxes. I want to be able to use a single select statement and conditionally query the database based on what box the user enter their information into. I currently am trying to use a CASE clause, but I believe that it is running into an error when I try to include a WHERE clause in the THEN argument. Here is what I am currently working with:

            ...

            ANSWER

            Answered 2021-Jun-15 at 19:54

            Move the CASE expression to the WHERE clause:

            Source https://stackoverflow.com/questions/67992606

            QUESTION

            Meaning of Compile-Time?
            Asked 2021-Jun-15 at 19:35

            My Question: What exactly does “compile-time” mean? I present my understanding below and where I am getting confused.

            Compilation is the process that generates a single executable .exe file from the .vb file. There are several ways to do this, for example by using the VBC.EXE command from the developer command window or MSDOS. The way I understand “compile-time” is that it is time when such a command gets executed and the exe file is generated. The following are the what I find confusing:

            1. When I write Dim i = 5, the compiler infers or “knows” that the variable “i” is an integer.
            2. If I want to print an integer or a string using the Writeline method of the console class then the compiler automatically determines which overloaded version it should call. So in this case also the compiler “knows” – this is also known as compile-time polymorphism.

            My confusion: Since in both the above cases the compiler infers or knows the type of variable or the version of the overloaded method to call just after we have finished typing the sentence, is this also called compile-time? We have not given any sort of compilation command here.

            1. Another confusion on the definition of compile-time refers to the case when we explicitly define overloaded methods. In the case of the writeline method, we know from the pop-up given by intellisense that immediately after we have finished typing the sentence the version with the correct signature is called. Now, when we define overloaded methods does the compiler know which version to call when we call the function (depending on signature) somewhere in the program right after we have finished typing the code? Or does the compiler know this after the exe file has been generated? This is a case of compile-time polymorphism. But then which time or which step is the “compile-time”?
            ...

            ANSWER

            Answered 2021-Jun-15 at 19:35

            We have not given any sort of compilation command here.

            No, but most modern IDEs can do similar "static analysis" that compilers do to determine types, etc. Some even do a very lightweight "compile" to determine what overloads are appropriate, etc.

            Also note that IDEs and the actual compiler may not always agree. IDE analysis is designed to be very fast, so the analysis done by the IDE may be less robust and less accurate than a static compiler.

            So in a sense these are all "compile-time" in that the only information that is available is what is present in the code. This is opposed to "run-time" where other factors such as user input, environment, and state can change the flow and interpretation of the program in ways that the compiler could not account for.

            Source https://stackoverflow.com/questions/67991616

            QUESTION

            Why does the .NET CLR not inline this properly?
            Asked 2021-Jun-15 at 19:35

            I ran into less than ideal inlining behavior of the .NET JIT compiler. The following code is stripped of its context, but it demonstrates the problem:

            ...

            ANSWER

            Answered 2021-Jun-15 at 19:35

            The functions Hash_Inline and Hash_FunctionCall are not equivalent:

            • The first statement in Hash_Inline rotates by 1, but in Hash_FunctionCall it rotates by curIndex.
            • For RotateLeft you may have probably meant:

            Source https://stackoverflow.com/questions/67991820

            QUESTION

            Lifetime of async closure return type
            Asked 2021-Jun-15 at 18:22

            Consider the following code:

            ...

            ANSWER

            Answered 2021-Jun-15 at 18:22

            i think you are looking for this:

            Source https://stackoverflow.com/questions/67991159

            QUESTION

            How to read a file from within a move FnMut closure that runs multiple times?
            Asked 2021-Jun-15 at 16:56

            I'm using glutin and so have a move closure for my program's main loop and I'm trying to play an audio file with the rodio crate. With the following code everything works and I get one beep every time the program loops:

            ...

            ANSWER

            Answered 2021-Jun-15 at 16:27
            The Problem

            Basically, the problem at hand is that rodio::Decoder::new consumes the value which it reads from (well, actually it is already consumed by BufReader::new). So, if you have a loop or a closure that can be called multiple times, you have to come up with a fresh value each time. This what File::open does in your first code snipped.

            In your second code snipped, you only create a File once, and then try to consume it multiple times, which Rust's ownership concept prevents you from doing.

            Also notice, that using reference is sadly not really an option with rodio since the decoders must be 'static (see for instance the Sink::append trait bound on S).

            The Solution

            If you think your file system is a bit slow, and you want to optimize this, then you might actually want to read the entire file up-front (which File::open doesn't do). Doing this should also provide you with a buffer (e.g. a Vec) that you can clone, and thus allows to repeatedly create fresh values that can be consumed by the Decoder. Here is an example doing this:

            Source https://stackoverflow.com/questions/67988070

            QUESTION

            Why these 2 simple codes give different results
            Asked 2021-Jun-15 at 15:48

            Code 1

            ...

            ANSWER

            Answered 2021-Jun-15 at 10:28

            For starters the compiler should issue a message for this code snippet

            Source https://stackoverflow.com/questions/67984121

            QUESTION

            Why comparing a small floating-point number with zero yields random result?
            Asked 2021-Jun-15 at 15:13

            I am aware that floating-point numbers are tricky. But today I encountered a case that I cannot explain (and cannot reproduce using a standalone C++ code).

            The code within a large project looks like this:

            ...

            ANSWER

            Answered 2021-Jun-15 at 09:57

            Barring the undefined behavior which can be easily be fixed, you're seeing the effect of denormal numbers. They're extremely slow (see Why does changing 0.1f to 0 slow down performance by 10x?) so in modern FPUs there are usually denormals-are-zero (DAZ) and flush-to-zero (FTZ) flags to control the denormal behavior. When DAZ is set the denormals will compare equal to zero which is what you observed

            Currently you'll need platform-specific code to disable it. Here's how it's done in x86:

            Source https://stackoverflow.com/questions/67982764

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            You can download it from GitHub.

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