[LLVMdev] llvm/test: suffix or operands invalid for `push'

Chris Lattner sabre at nondot.org
Wed Mar 5 23:03:55 PST 2008

On Mar 3, 2008, at 2:49 AM, Joachim Durchholz wrote:

> Hi all,
> I found enough to explain the behaviour that I encountered. If I'm
> correct, the bugs are just in the dejagnu-based test machinery, not in
> LLVM itself.

Yep, I believe that.  I haven't been following the whole thread very  
closely, what specific tests are affected here?

Before making any significant and widespread changes to llvm/test,  
please change one test and propose it as a model for other tests.

Thanks for working on this!


> There seem to be two issues:
> Issue 1 is that the CC, CFLAGS, CXX, and CXXFLAGS settings are not
> reflected in the site.exp file. I had
> CC=gcc-4.2
> CFLAGS="-m32 -Wl,-melf_i386"
> CXX=g++-4.2
> ARCH=i686-pc-linux-gnu
> ./configure --prefix=$HOME --target=$ARCH --host=$ARCH --build=$ARCH
> but site.exp still has
>  set gccpath "gcc"
>  set gxxpath "g++"
> and no mention of -m32 or -Wl,elf_i386 (these options are required to
> force a 64-bit GNU toolchain into 32-bit mode).
> I don't know where these options are lost; I did a little looking  
> around
> in the configure scripts, but didn't find any obvious problems and
> decided to leave this kind of issue to the autoconf experts :-)
> Issue 2 is that the RUN: lines in the dejagnu tests ignore $CC, $CXX,
> $CFLAGS and $CXXFLAGS when calling gcc, g++, or as (and possibly  
> ld). In
> most cases things will happen to not fail, but the assembler choked on
> 32-bit opcodes when running in default mode (which is 64 bits on an
> amd64 machine, of course).
> If I'm correct, this is a bug in the tests, not in LLVM.
> Proposed bug fix would then be to replace in all test case files
> (hopefully I got the dejagnu macro syntax right):
>  gcc -> %gccpath
>  g++ -> %gxxpath
>  as -> %gccpath (don't call 'as' directly, gcc knows how to call it!)
>  ld -> %gccpath (just as with 'as')
> Can anybody confirm or correct these findings?
> Regards,
> Jo
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