[LLVMdev] Help with gcc SSE intrinsics
dag at cray.com
Fri Oct 9 15:50:03 CDT 2009
On Friday 09 October 2009 15:47, Dale Johannesen wrote:
> On Oct 9, 2009, at 1:26 PMPDT, David Greene wrote:
> > Ok, I've been looking at this for hours and can't figure it out. I
> > know I'm
> > missing something obvious.
> > I've been spending the past few days beefing up the vector support
> > in the C
> > Backend. This should help us debug vector code that's miscompiled.
> > But
> > gcc doesn't like this fragment:
> > ((double *)(&llvm_cbe_r1147))[0u] =
> > (((llvm_cbe_r1146__BITCAST_TEMPORARY.Int64 = 4ull,
> > llvm_cbe_r1146__BITCAST_TEMPORARY .Double)));
> > llvm_cbe_r1148 = __builtin_ia32_movddup(llvm_cbe_r1147);
> I don't see __builtin_ia32_movddup defined anywhere in the llvm-gcc
> sources. That's probably it.
Not llvm-gcc. GNU gcc. It's documented here:
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