[LLVMdev] piping into lli broken on darwin

[Eli Friedman]

On Wed, Oct 31, 2012 at 5:01 PM, Jack Howarth <howarth at bromo.med.uc.edu> wrote:
> On Wed, Oct 31, 2012 at 04:43:42PM -0700, Eli Friedman wrote:
>> 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
>
> Eli,
>    I still get...
>
> % bugpoint --run-custom --exec-command=lli -gcc=clang tempfile
> Read input file      : 'tempfile'
> *** All input ok
> Initializing execution environment: Found command in: /sw/opt/llvm-3.2/bin/lli
> Running the code generator to test for a crash:
> Generating reference output from raw program: <llc><gcc>
> Error running tool:
>   /sw/opt/llvm-3.2/bin/clang -x assembler bugpoint-test-program.bc.llc.s -x none -o bugpoint-test-program.bc.llc.s.gcc.exe -lm -O2
> bugpoint-test-program.bc.llc.s:5:2: error: unknown directive
>         .type   single_do_loop_int_max_iterations, at function
>         ^
> bugpoint-test-program.bc.llc.s:14:2: error: unknown directive
>         .size   single_do_loop_int_max_iterations, .Ltmp0-single_do_loop_int_max_iterations
>         ^
> which was the other half for the gnutls fix.

Can you check if the IR file specifies a target triple which doesn't
match the current platform?

-Eli