gcc - What exactly is LLVM? - Stack Overflow
2020年6月30日 · LLVM has this meaning in the following sentence, for example: "I used LLVM to compile C programs to a MIPS platform". LLVM libraries: This is the reusable code portion of the LLVM infrastructure. For example, LLVM has this meaning in the sentence: "My project uses LLVM to generate code through its Just-in-Time compilation framework".
What is the difference between clang (and LLVM) and gcc / g++?
2014年7月19日 · Clang converts C/C++/etc to LLVM IR, LLVM performs optimizations on the IR, and the LLVM x86 backend writes out x86 machine code for execution. Despite the name, LLVM is not a Virtual Machine in the traditional sense - it is a computation model and representation that lends itself well to the task of manipulating code.
LLVM: difference between "uses" and "user" in Instruction or Value ...
We have still not presented the most powerful aspect of the LLVM IR (enabled by the SSA form): the Value and User interfaces; these allow you to easily navigate the use-def and def-use chains. In the LLVM in-memory IR, a class that inherits from Value means that it defines a result that can be used by others, whereas a subclass of User means ...
c++ - How is LLVM isa<> implemented? - Stack Overflow
2011年5月17日 · LLVM does make extensive use of a hand-rolled form of RTTI that use templates like isa<>, cast<>, and dyn_cast<>. This form of RTTI is opt-in and can be added to any class. It is also substantially more efficient than dynamic_cast<>.
how to include llvm library in c++ project - Stack Overflow
2021年5月7日 · include_directories(${LLVM_INCLUDE_DIRS}) add_definitions(${LLVM_DEFINITIONS}) # Now build our tools add_executable(lifter main.cpp BB.cpp Func.cpp Register.cpp Immediate.cpp Instr.cpp Utilities.cpp OpCode.cpp) # Find the libraries that correspond to the LLVM components # that we wish to use …
Is it possible to use LLVM-assembly directly? - Stack Overflow
2020年5月14日 · There appears to be an LLVM assembler. llvm-as is the LLVM assembler. It reads a file containing human-readable LLVM assembly language, translates it to LLVM bitcode, and writes the result into a file or to standard output.
Getting the operands in an LLVM Instruction - Stack Overflow
2018年3月29日 · I am writing an optimization for my compiler and I use LLVM IR as my Intermediate Language. I have parsed the input file and converted it to LLVM IR. During optimization, I need to retrieve the operands of the instructions. I am able to find getOpCode() in the Instruction class, but unable to retrieve the operand list. How do I go about that?
Creating a VHDL backend for LLVM? - Stack Overflow
To compound the difficulty further, you may not get the same LLVM IR when compiling the generated C! (Consider the resulting feedback loop) As for Java, you are in for an even harder battle going direct from LLVM IR, and in either case still have the problem you likely won't get the same code compiling to LLVM IR, if one even can do that.
llvm - How to automatically register and load modern Pass in …
I'm trying to write a simple "modern" LLVM pass and use it with Clang. I want it to be able to be run with a command like: clang -Xclang -load -Xclang libMyPass.so file.cpp There are a lot of manu...
Why isn't there a good scheme/lisp on llvm? - Stack Overflow
Currently, llvm-gcc is the nearest thing to a popular implementation of any language on LLVM. In particular, there are no mature LLVM-based language implementations with garbage collection yet. I am sure LLVM will be used as the foundation for lots of exciting next-generation language implementations but that will take a lot of time and effort ...