tra added inline comments.

================
Comment at: clang/test/Driver/cuda-bindings.cu:148
+// RUN: | FileCheck -check-prefix=D_ONLY %s
+// D_ONLY: "foo.o"
----------------
jhuber6 wrote:
> tra wrote:
> > Ideally we want to test that the output file actually survives the 
> > compilation. It's traky to do for in-tree tests as we don't have `ptxas`. 
> > However, we should be able to add a script which would just touch whatever 
> > is specified with `-o` argument and ignore the rest and then actually do 
> > run clang with `--ptxas-path=/path/to/dummy-ptxas` and then verify file 
> > existence.
> Yeah, I wasn't sure if there was a good way. I don't have any CUDA machines 
> to test so I just went with the simplest version.
This is a more general problem, not specific to this test -- we have other 
tests where we assume that if something is printed by `cc -###`, then it must 
be real. 
I guess it's more of a TODO note for a potential improvement.

This patch is good to go as is.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D131278/new/

https://reviews.llvm.org/D131278

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