[LLVMdev] Getting rid of tabs in LLVM's assembly output?

Chandler Carruth chandlerc at google.com
Tue Dec 18 15:39:07 PST 2012

On Tue, Dec 18, 2012 at 3:36 PM, Tim Northover <t.p.northover at gmail.com>wrote:

> > > Maybe it's naive, but I would expect it to be easy for each backend to
> > > expose a constant N which is the length of the longest mnemonic, and
> then
> > > for the printer to pad to N+1 or N+2….
> >
> > That would probably work for X86, but other targets (ARM in particular)
> > often have operands which are printed/parsed as suffices on the mnemonic
> > itself.  Because of these, the backend does not statically know the
> longest
> > potential string-of-stuff-before-the-tab.
> Are you thinking of something beyond the ".F32.I16" suffixes (for
> example)? If not, the result may not be TableGeneratable, but is
> probably conservatively known as "8 + natural mnemonic length" for
> these purposes.

The great thing is, if its close enough, it doesn't matter if there exist
corner cases that are formatted less well.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20121218/cee8616c/attachment.html>

More information about the llvm-dev mailing list