llvm dev - Jun 2011 - [LLVMdev] multiple return value assembler regression?

It appears the syntax for returning multiple values has changed since 2.9.
Previous to that:
	ret  i32 %a, i32 %b
worked.  The new syntax is something like:
	ret  { i32, i32 }{i32 %a, i32 %b}
but this yields an error:
mrv-bug.ll:5:24: error: invalid use of function-local name
	ret  { i32, i32 }{i32 %a, i32 %b}
	                      ^
If %a and %b are replaced by constants, things work.

Am I doing something wrong, or should I file a bug report?

On Fri, Jun 24, 2011 at 9:29 AM, Bagel <bagel99 at gmail.com>
wrote:
> It appears the syntax for returning multiple values has changed since 2.9.
> Previous to that:
>        ret  i32 %a, i32 %b
> worked.  The new syntax is something like:
>        ret  { i32, i32 }{i32 %a, i32 %b}
> but this yields an error:
> mrv-bug.ll:5:24: error: invalid use of function-local name
>        ret  { i32, i32 }{i32 %a, i32 %b}
>                              ^
> If %a and %b are replaced by constants, things work.
>
> Am I doing something wrong, or should I file a bug report?
You need to use insertvalue to build a struct with non-constant values..

-Eli

On Jun 24, 2011, at 9:29 AM, Bagel wrote:
> It appears the syntax for returning multiple values has changed since 2.9.
> Previous to that:
> 	ret  i32 %a, i32 %b
> worked.  The new syntax is something like:
> 	ret  { i32, i32 }{i32 %a, i32 %b}
> but this yields an error:
> mrv-bug.ll:5:24: error: invalid use of function-local name
> 	ret  { i32, i32 }{i32 %a, i32 %b}
> 	                      ^
> If %a and %b are replaced by constants, things work.
This is obsolete and deprecated syntax that is dropped in "llvm 3.0"
(and thus on mainline right now).  If you run that through llvm-as|llvm-dis from
llvm 2.9, you'll see the preferred syntax.

-Chris

On 06/24/2011 03:45 PM, Chris Lattner wrote:
>
> On Jun 24, 2011, at 9:29 AM, Bagel wrote:
>
>> It appears the syntax for returning multiple values has changed since
2.9.
>> Previous to that:
>> 	ret  i32 %a, i32 %b
>> worked.  The new syntax is something like:
>> 	ret  { i32, i32 }{i32 %a, i32 %b}
>> but this yields an error:
>> mrv-bug.ll:5:24: error: invalid use of function-local name
>> 	ret  { i32, i32 }{i32 %a, i32 %b}
>> 	                      ^
>> If %a and %b are replaced by constants, things work.
>
> This is obsolete and deprecated syntax that is dropped in "llvm
3.0" (and thus on mainline right now).  If you run that through
llvm-as|llvm-dis from llvm 2.9, you'll see the preferred syntax.
>
> -Chris
OK, I guess I missed the announcement that it was obsolete.  The new mechanism 
is quite wordy when compared with the old.  Sigh.

Are there any other languages other than mine (http://code.google.com/p/esl/) 
which return multiple scalars that have LLVM frontends?

bagel