[LLVMdev] llvm-ld with -O params?

[Simmons, Aaron]

I am using LLVM via the Adobe Alchemy project.  I’m trying to upgrade LLVM within Alchemy (its v2.1 of opt is crashing), but am running into an issue with llvm-ld.  Alchemy is passing –O5 to llvm-ld, but it seems that –O params are no longer accepted by llvm-ld v2.4+ (“llvm-ld: Unknown command line argument '-O5'.  Try: 'llvm-ld --help'”).

 

Are –O optimizations completely deprecated?  Or is there an alternate way to pass them in?

 

 

 

Thanks,

aaron

[Simmons, Aaron]

I’m also running into an issue with llc.  Alchemy is trying to use –march avm2 and other avm2 options, but:

llc: for the -march option: : Cannot find option named 'avm2'!

llc: Unknown command line argument '-avm2-use-memuser'.  Try: 'llc --help'

llc: Unknown command line argument '-avm2-package-name=cmodule'.  Try: 'llc --help'

 

Was avm2 support dropped?

[Török Edwin]

On 2009-07-22 22:14, Simmons, Aaron wrote:
>
> I’m also running into an issue with llc. Alchemy is trying to use
> –march avm2 and other avm2 options, but:
>
> llc: for the -march option: : Cannot find option named 'avm2'!
>
> llc: Unknown command line argument '-avm2-use-memuser'. Try: 'llc
> --help'
>
> llc: Unknown command line argument '-avm2-package-name=cmodule'. Try:
> 'llc --help'
>
>
>
> Was avm2 support dropped?
>

There never was avm2 support in mainline LLVM.

Best regards,
--Edwin
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[Owen Anderson]

On Jul 22, 2009, at 12:14 PM, Simmons, Aaron wrote:

I’m also running into an issue with llc.  Alchemy is trying to use –march avm2 and other avm2 options, but:

llc: for the -march option: : Cannot find option named 'avm2'!

llc: Unknown command line argument '-avm2-use-memuser'.  Try: 'llc --help'

llc: Unknown command line argument '-avm2-package-name=cmodule'.  Try: 'llc --help'

 

Was avm2 support dropped?

 

AVM support was never contributed to the public tree.  Alchemy must be using a patched version of LLVM.

--Owen

[Simmons, Aaron]

My apologies. I didn't realize that Adobe had branched llc.

What about llvm-ld and -O?

[Alastair Lynn]

Hi Aaron-

I believe llvm-ld performs a set of optimisations by default unless
you pass -disable-opt; if you need finer-grained control you might
consider linking your bitcode files together with llvm-link and
running opt that way.

Alastair