[llvm-dev] Implications of Module SourceFileName

David Blaikie via llvm-dev
Tue, 26 May 2020 18:41:58 -0000

Does your source language's concept of Module have to/have any bearing on
the llvm concept of a Module? (ie: do all the source files need to be
compiled in one go/together into one file? C++'s concept of a module
doesn't have this, for instance... I /think/ at least that each fragment of
a module can be compiled separately - which is good for build parallelism,
etc)

On Mon, May 25, 2020 at 3:23 PM Rarrum via llvm-dev <llvm-dev at
lists.llvm.org>
wrote:

> In the language I'm working on, a module (which does have a
user-defined
> name in source) may be comprised of several files.  I'm considering
passing
> the (user-defined) name to llvm::Module's setModuleIdentifier, then a
> semicolon separated list of file names to setSourceFileName.  Is this going
> to cause unforeseen problems?
>
> https://releases.llvm.org/10.0.0/docs/LangRef.html#source-filename seems
> to imply that it only needs to be a "consistent unique global
identifier",
> but then also shows a unix-style path as the syntax.  I don't see
anything
> crazy being done with it from a quick source of llvm's source.
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