[LLVMdev] piping into lli broken on darwin

[Eli Friedman]

On Wed, Oct 31, 2012 at 4:33 PM, Jack Howarth <howarth at bromo.med.uc.edu> wrote:
> On Wed, Oct 31, 2012 at 03:53:50PM -0700, Eli Friedman wrote:
>> On Wed, Oct 31, 2012 at 8:43 AM, Jack Howarth <howarth at bromo.med.uc.edu> wrote:
>> >   While testing llvm/polly svn on x86_64-apple-darwin10/11/12, I noticed that three darwin
>> > specific polly-test regressions exist. At least part of these failures appear to be due
>> > to lli on darwin not accepting piped input such that the test...
>> >
>> > opt -load /sw/src/fink.build/llvm32-3.2-0/llvm-3.2/build/lib/LLVMPolly.so
>> > -basicaa -polly-prepare -polly-region-simplify -O3
>> > /sw/src/fink.build/llvm32-3.2-0/llvm-3.2/tools/polly/test/CodeGen/single_do_loop_int_max_iterations.ll
>> > | lli
>> >
>> > produces the error...
>> >
>> > LLVM ERROR: Could not resolve external global address: stdout
>>
>> This error means you're generating a reference to a symbol named
>> stdout, which does not exist on OS X.  Why do you think this is a bug
>> in lli?
>
> Eli,
>    What about the output that I see from bugpoint...
>
> http://llvm.org/bugs/show_bug.cgi?id=14142#c4
>
> which seems to suggest that the actual problem is an alignment issue.
>
> ugpoint-test-program.bc.llc.s.gcc.exe -lm -O2
> bugpoint-test-program.bc:4:Alignment too large: 15. assumed.
> bugpoint-test-program.bc:5:Unknown pseudo-op: .type
> bugpoint-test-program.bc:5:Rest of line ignored. 1st junk character valued 115

This is a bugpoint issue; try passing "-gcc=clang" to bugpoint.

-Eli