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Re: vector extension bug?
- From: Richard Henderson <rth at redhat dot com>
- To: Ian Lance Taylor <iant at google dot com>
- Cc: David Mathog <mathog at caltech dot edu>, gcc at gcc dot gnu dot org
- Date: Fri, 03 Dec 2010 14:24:19 -0800
- Subject: Re: vector extension bug?
- References: <E1PN8Rc-0007mv-AZ@mendel.bio.caltech.edu> <mcroc97n25e.fsf@google.com>
On 11/29/2010 03:25 PM, Ian Lance Taylor wrote:
> Basically, the 64-bit calling convention support assumes that the SSE2
> instructions are always available, and silently fails when -mno-sse2 is
> used. I don't really have an opinion as to whether the compiler needs
> to support this case correctly, but I think that clearly it must not
> silently fail.
I believe it should non-silently fail to compile this. I really can't
imagine a viable reason to introduce a soft-fp calling convention for
the 64-bit compiler.
If David really wants to continue with this project, he should be
working with the 32-bit compiler, since (1) 32-bit cpus may legitimately
not have SSE registers, and (2) it already has a calling convention
that can handle this.
r~