[testsuite] Add scan-offload-rtl-dump

[Tom de Vries]

Hi,

I'm posting this patch for the record.

I wrote it but haven't found a use for it yet. I find it easier to write 
asm scans for nvptx than rtl ones.

Thanks,
- Tom
-------------- next part --------------
A non-text attachment was scrubbed...
Name: 0001-testsuite-Add-scan-offload-rtl-dump.patch
Type: text/x-patch
Size: 6013 bytes
Desc: not available
URL: <http://gcc.gnu.org/pipermail/gcc-patches/attachments/20180503/aadb2436/attachment.bin>