[PPL-devel] Fwd: ppl 0.11.2 vs llvm

[Roberto Bagnara]

On 08/07/11 16:56, Jack Howarth wrote:
> On Sun, Aug 07, 2011 at 09:31:46AM +0200, Roberto Bagnara wrote:
>> On 08/06/11 14:14, Jack Howarth wrote:
>>>      I am rather baffled that you can't reproduce this problem on Linux.
>>> Attached is a build and make check log from x86_64 Fedora 10 using the
>>> ppl 0.11.2 release and the binary distribution of the clang 2.9 compilers
>>> fromhttp://llvm.org/releases/2.9/clang+llvm-2.9-x86_64-linux.tar.bz2.
>>> With CC set to clang and CXX set to clang++, I see the same failures as
>>> under the clang compilers from Xcode 4.1 under Lion.
>>
>> Hi Jack,
>>
>> please try configuring the PPL with --disable-fpmath on both platforms
>> and let us know if `make check' passes this way.
>
>     Building ppl9 with...
>
>    $ ../configure --prefix=/sw --mandir=/sw/share/man --infodir=/sw/share/info --disable-static --enable-pch --with-java=/System/Library/Frameworks/JavaVM.framework/Home CFLAGS=-g -O2 -pipe -fpch-preprocess -fPIC -fwrapv CXXFLAGS=-g -O2 -pipe -fpch-preprocess -fPIC -fwrapv CPPFLAGS=-I/System/Library/Frameworks/JavaVM.framework/Headers --enable-check=thorough --disable-fpmath -C
>
> produces no testsuite failures when using clang3.0svn from Xcode 4.1. I'll repeat this with the stock llvm-gcc-4.2
> system compilers from Xcode 4.1 as well.

Great, thanks!

> ps Will --disable-fpmath introduce any problems for using the
> resulting ppl build with graphite in FSF gcc or cloog-ppl?

Not that I know: neither GCC nor any cloog-ppl used any floating-point
based approximation.  And if they do you will have an error as soon as
you try compiling them.  So, no, I do not foresee any problems.
Cheers,

    Roberto

-- 
Prof. Roberto Bagnara
Applied Formal Methods Laboratory
Department of Mathematics, University of Parma, Italy
http://www.cs.unipr.it/~bagnara/
mailto:bagnara at cs.unipr.it