[patch] testsuite enable PIE tests on FreeBSD

[Jeff Law]

On 05/25/2015 06:42 AM, Dominique Dhumieres wrote:
>> Wouldn't it be better to remove the target selector and instead add:
>>
>> /* { dg-require-effective-target pie } */
>> ...
>
> This allows the tests to be run on Darwin and fail because the code generated does not
> match the scan-assembler:
>
> FAIL: gcc.target/i386/iinline-attr-2.c scan-assembler p2align
> FAIL: gcc.target/i386/pr32219-1.c scan-assembler movl[ \\t]xxx\\\\(%rip\\\\), %eax
> FAIL: gcc.target/i386/pr32219-3.c scan-assembler movl[ \\t]xxx\\\\(%rip\\\\), %eax
> FAIL: gcc.target/i386/pr32219-3.c scan-assembler-not xxx@GOTPCREL
> FAIL: gcc.target/i386/pr32219-5.c scan-assembler movl[ \\t]xxx\\\\(%rip\\\\), %eax
> FAIL: gcc.target/i386/pr32219-6.c scan-assembler xxx@GOTPCREL
> FAIL: gcc.target/i386/pr32219-7.c scan-assembler movl[ \\t]xxx\\\\(%rip\\\\), %eax
> FAIL: gcc.target/i386/pr32219-7.c scan-assembler-not xxx@GOTPCREL
> FAIL: gcc.target/i386/pr39013-1.c scan-assembler bar@PLT
> FAIL: gcc.target/i386/pr39013-1.c scan-assembler foo@PLT
> FAIL: gcc.target/i386/pr39013-2.c scan-assembler bar@PLT
> FAIL: gcc.target/i386/pr39013-2.c scan-assembler foo@PLT
>
> I suspect that this will also be the case for gcc.target/i386/pr64317.c.
Can you dig a little bit deeper -- is it the case that we just need a 
more general pattern to match whatever assembler is necessary for Darwin?

Or is it the case that Darwin doesn't have some particular capability in 
its assembler/linker that these tests depend on (and thus we need 
another check-effective-target-whatever)

I'm happy to iterate with Andreas to get this addressed for Darwin, but 
neither Andreas nor myself really know much about that platform.

jeff