--save-temps in DPC++ with HIP support

[zjin-lcf]

When I try -save-temps with DPC++ with HIP support, the intermediate files are not generated. Can you reproduce that ? Thanks.

[npmiller]

Yes, --save-temps is acting a bit strange.

The intermediate files are still generated, they just don't appear in the current directory unless it's empty, so you can either try to find them in /tmp or make sure your current working directory is empty when calling dpcpp.

Another thing to note is that because of the way the compilation works, some of the intermediary files will just contain the path to the actual intermediary file which will still be in /tmp, so be aware of that but it's pretty easy to retrieve it from there.

[zjin-lcf]

Could developers specify a directory for intermediate files with the command options ? Thanks

[npmiller]

There is no option for that, -save-temps= can only be -save-temps=cwd or -save-temps=obj, it's not to specify the output directory, I'm not completely sure what -save-temps=obj is meant to do, from what I could find it is supposed to save the intermediate files in the same directory as the output of the compilation, when I tried it it did that but only saved the .o file and not any other one. The documentation is a bit lacking.

[zjin-lcf]

Okay. It may help compiler engineers with an option to specify a directory for intermediate files.