Recently I was working on a transformation in middle end to deal with shared variable expansion on an architecture that doesn't support globals in shared memory space. Use and User are two concepts all around the whole middle end. Initially I cannot tell them apart very clearly. After my work on the transformation, I got … Continue reading Use and User in LLVM
Category: compiler
COMDAT in LLVM
I have been working on LLVM heterogenous IR module (see this video for more details) for several days. The first thing I need is to modify the class llvm::Module to make it accommodate multiple modules. Frankly speaking, it was my first time to hear COMDAT when I went through every member data in the class. … Continue reading COMDAT in LLVM
Compiler Techniques/Terminologies
Tail call In computer science, a tail call is a subroutine call performed as the final action of a procedure. If a tail call might lead to the same subroutine being called again later in the call chain, the subroutine is said to be tail-recursive, which is a special case of recursion. Tail calls can be implemented … Continue reading Compiler Techniques/Terminologies