[PATCH] D85363: [flang] Add options to control IMPLICIT NONE

[Tim Keith via Phabricator via llvm-commits]

tskeith added a comment.

In D85363#2197834 <https://reviews.llvm.org/D85363#2197834>, @klausler wrote:

> In D85363#2197824 <https://reviews.llvm.org/D85363#2197824>, @sscalpone wrote:
>
>> The gfortran options is -fimplicit-none.  It doesn't appear to have an inverse, but following the convention would be -fno-implicit-none.  I think there is value using the same spelling for this option.
>
> But -fno-implicit-none would mean "don't assume IMPLICIT NONE where it doesn't appear", not "ignore IMPLICIT NONE where it does appear."  Not the same thing.

We may also want an option that means "assume IMPLICIT NONE(EXTERNAL)" everywhere. That's why I included "type" in the option name. gfortran's `-fimplicit-none` option may pre-date the addition of `IMPLICIT NONE(EXTERNAL)` to the language.

Also, we can reconsider option names when we have a real driver.


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https://reviews.llvm.org/D85363