search for: typesystemchang

...we should always write UByteTyID and SByteTyID as a single byte? > > Long term, LLVM's distinction between signed and unsigned will go away. Talk to > Chris about that. :) If you're interested in the plans, they are described in some detail here: http://nondot.org/sabre/LLVMNotes/TypeSystemChanges.txt Note that there is no concrete timeline for this to happen, it basically depends on when someone is ambitious enough to start working on it. In any case, both signed and unsigned 8-bit constants can be written out in a single byte. Again, do you think it's worth special casing this tho...

...and SByteTyID as a single byte? > > > > Long term, LLVM's distinction between signed and unsigned will go away. > Talk to > > Chris about that. :) > >If you're interested in the plans, they are described in some detail here: >http://nondot.org/sabre/LLVMNotes/TypeSystemChanges.txt > >Note that there is no concrete timeline for this to happen, it basically >depends on when someone is ambitious enough to start working on it. > >In any case, both signed and unsigned 8-bit constants can be written out >in a single byte. Again, do you think it's worth...

Hi Is there any rationale written down for why integer types don't carry (perhaps optional) signs somewhere? I feel like I might have read it somewhere before (and I see that it used to exist pre 2.0), but I can't find anything now. Relatedly, is there a reasonable way to attach user-data to a type or something? It feels very cumbersome to have to wrap all values and types in my front

...student at the University there. Sheng and I will be working together on some significant changes to LLVM in the coming months. Our first task is to implement integer types without signs in LLVM. You can read Chris Lattner's notes on this change at this URL:http://nondot.org/~sabre/LLVMNotes/TypeSystemChanges.txt. Additionally, PR950 will track the implementation of this feature. You can keep track of our progress by going here: http://llvm.org/PR950 If you have any technical questions, please feel free to ask. Thanks, Reid.

On Fri, 2004-08-20 at 17:55, Robert Mykland wrote: > At 05:09 PM 8/20/2004, Chris Lattner wrote: > > > >If you're interested in the plans, they are described in some detail here: > >http://nondot.org/sabre/LLVMNotes/TypeSystemChanges.txt > > > >Note that there is no concrete timeline for this to happen, it basically > >depends on when someone is ambitious enough to start working on it. > > > >In any case, both signed and unsigned 8-bit constants can be written out > >in a single byte. Agai...

Robert Mykland wrote: > Dear Chris and Reid: Hi Robert. > > Some other random ideas I've had as I've been sifting through the new > bytecode format. Please let me know what you think. > > 1) ANSI C allows for char to default to unsigned char. This is I guess > not how it normally is in GCC. If char defaulted to unsigned char > several things would be

Dear Chris and Reid: Some other random ideas I've had as I've been sifting through the new bytecode format. Please let me know what you think. 1) ANSI C allows for char to default to unsigned char. This is I guess not how it normally is in GCC. If char defaulted to unsigned char several things would be possible. Single char constants that are defined would be almost always stored