[LLVMdev] A. Pool Allocation under PowerPC (Mac)

[Ricardo]

John,

Thanks for the information. That comment in the source code confused me and I wanted to be sure
that the installation of all the LLVM framework in the macintosh for testing the pool allocation
was not going to be done in vain.

The LLVM documentation states that gcc 3.4x is necessary for compiling the LLVM. On the other
hand, Xtools 1.5 for Mac includes only gcc 3.3 and Xtools 2.0 includes gcc 4.0. Do I need to
download and build the gcc 3.4 source code? Do you have any installation guide for LLVM under Mac
OS X?

Also, in the release notes, it is stated that for the Power PC:

"Code generation is supported for 32-bit ABI only"

If that is the case then, isn't the code generated for Power PC going to use 64 bit pointers? If
so, I suppose that the Mac platform is not going to benefit too much from the Automatic Pointer
Compression. Am I correct?

Thanks



--- John Criswell <criswell at cs.uiuc.edu> wrote:

> Ricardo wrote:
> > Hello,
> > 
> > Is PA working on the macintosh already? 
> 
> Although we may not have run it on MacOS X recently, I believe that it 
> should work.  We've run it on several architectures and operating 
> systems, including SparcV9/Solaris.
> 
> If you find that PA doesn't compile or work on MacOS X, please file a 
> bug report (http://llvm.cs.uiuc.edu/bugs/) so that we can fix it.
> 
> > 
> > I am asking because I found this in the source code:
> > 
> > /// Wants8ByteAlignment - FIXME: this is a complete hack for X86 right now.
> 
> I'm not sure what this means, but I don't believe that it means that it 
> only works on x86.  It might just fiddle with alignments to get better 
> performance out of the x86.
> 
> > 
> > Thanks
> > 
> > _______________________________________________
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> 
> -- John T.
> 
> -- 
> John T. Criswell
> Research Programmer
> University of Illinois at Urbana-Champaign
> "It's today!" said Piglet. "My favorite day," said Pooh.
> 
>