Re: Does anyone care about gcc 3.x support for *x86* anymore?

[Ingo Molnar]

(reposted with Andrew and Linus Cc:-ed too)

* H. Peter Anvin <hpa@xxxxxxxxx> wrote:

> [Reposting as a separate thread]
> 
> Recently, we have seen an increasing number of problems 
> with gcc 3.4 on x86; mostly due to poor constant 
> propagation producing not just bad code but failing to 
> properly eliminate what should be dead code.
> 
> I'm wondering if there is any remaining real use of gcc 
> 3.4 on x86 for compiling current kernels (as opposed to 
> residual use for compiling applications on old 
> enterprise distros.)  I'm specifically not referring to 
> other architectures here -- most of these issues have 
> been in relation to low-level arch-specific code, and as 
> such only affects the x86 architectures.  Other 
> architectures may very well have a much stronger need 
> for continued support of an older toolchain.
> 
> If there isn't a reason to preserve support, I would 
> like to consider discontinue support for using gcc 3 to 
> compile x86 kernels.  If there is a valid use case, it 
> would be good to know what it is.
> 
> 	-hpa
> 
> -- 
> H. Peter Anvin, Intel Open Source Technology Center
> I work for Intel.  I don't speak on their behalf.
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