[LLVMdev] 1.9 Prerelease Available for Testing

[Reid Spencer]

On Thu, 2006-11-16 at 13:49 -0800, Chris Lattner wrote:
> On Thu, 16 Nov 2006, Tanya M. Lattner wrote:
> >>  * I don't think this is ready for release. In particular the llvm-gcc4
> >> binary
> >>    seg faults on FC 5 for most of llvm-test programs.
> >>  * I'm going to re-try without using the binaries and building
> >> everything from scratch.
> >
> > Does llvm-gcc4 seg fault for make check? I've done extensive testing with
> > llvm-gcc4 on x86 and did not have any problems with llvm-gcc4... so I am
> > curious as to whats going on. If you could look into this, that would be
> > great. Please triple check that you are using a clean llvm-test directory
> > (ie. did not use llvm-gcc3 previously) and that the correct llvm-gcc is
> > being used.
> 
> This is also quite possibly a problem with llvm-gcc being built on a 
> non-FC5 machine and pulling in different libraries.  This is why binary 
> distros on linux doesn't usually work very well.  If so, there really 
> isn't anything we can do about this, other than labeling the binary with 
> the linux version it was built on.

Perhaps. That's why I'm going to build llvm-gcc from the sources.

> 
> >> BUILD LLVM WITH LLVM-GCC4 CONFIGURED (PASS/FAIL)
> >>  * Configure failed to find llvm-gcc4 when the directory provided to
> >> --with-llvmgccdir
> >>    was the llvm-gcc4-1.9-x86-linux directory unpacked from the tarball.
> >> The 5-line
> >>    warning message at the end of configure run was produced. I don't
> >> know what configure
> >>    is looking for, but its not finding it.
> >
> > Interesting. This must be a bug in the configure script. This probably
> > should be fixed.
> 
> Reid, are you sure you passed the current directory to the configure 
> script?

Yup. Did it several times. Same result.

> 
> >>  * FAIL: 'make' failed in runtime library. Althought the runtime
> >> library isn't needed
> >>    with llvm-gcc4, it shouldn't fail to compile it:
> >>    make[3]: Entering directory
> >> `/proj/llvm/rel1.9/llvm/runtime/GCCLibraries/crtend'
> >>    llvm[3]: Compiling crtend.c for Release build (bytecode)
> >>    crtend.c:16: internal compiler error: Segmentation fault
> >>    Please submit a full bug report,
> >>    with preprocessed source if appropriate.
> >>    See <URL:http://llvm.org/bugs> for instructions.
> >>  * PASS: 'make tools-only'
> >
> > I'll have to defer to Chris on this and if its a show stopper.
> 
> Something is wrong with your configuration, probably related to not 
> finding llvmgcc4 right.  You should get this message:
> 
> llvm[0]: Warning: These runtime libraries only need to be built with
> llvm[0]: Warning: llvm-gcc version 3. They are automatically included
> llvm[0]: Warning: with llvm-gcc version 4 and beyond

Right.

> 
> if you try to build in llvm/runtime.
> 
> >>  * Most of the test (90%) fail compile with seg fault.
> >>
> >> PATH="/proj/llvm/rel1.9/llvm/Release/bin:/proj/install/bin:/usr/lib/qt-3.3/bin:/usr/kerberos/bin:/usr/local/bin:/usr/bin:/bin:/usr/X11R6/bin:/home/reid/bin:/opt/j2sdk_1.4.2/j2sdk1.4.2/bin:/opt/oracle/bin" /proj/llvm/rel1.9/llvm-gcc4-1.9-x86-linux/bin/llvm-gcc -I/proj/llvm/rel1.9/llvm-test/SingleSource/UnitTests/Vector/SSE -I/proj/llvm/rel1.9/llvm-test/SingleSource/UnitTests/Vector/SSE -I/proj/llvm/rel1.9/llvm/include -I/proj/llvm/rel1.9/llvm-test/include -I../../../../include -I/proj/llvm/rel1.9/llvm/include -D_GNU_SOURCE -D__STDC_LIMIT_MACROS -D__NO_MATH_INLINES -O2 -msse2 -msse2 -O0 -S sse.expandfft.c -o Output/sse.expandfft.ll -emit-llvm
> >> sse.expandfft.c:268: internal compiler error: Segmentation fault
> >> Please submit a full bug report,
> >> with preprocessed source if appropriate.
> 
> It's not clear to me if this is with the binary distro of llvm-gcc4 (which 
> is apparently incompatible with your system) or with one you built 
> yourself...

Binary distro. As I said, I'm going to rebuild from source, possibly
with 4.0.3 and retry everything.

> 
> -Chris
>