[flang-commits] [flang] [flang][runtime] Build ISO_FORTRAN_ENV to export kind arrays as linkable symbols (PR #95388)

[Michael Klemm via flang-commits]

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@@ -0,0 +1,110 @@
+!===-- module/__fortran_bultin_kinds.f90 --=--------------------------------===!
----------------
mjklemm wrote:

When I remove the code, the compiler folds the current value `32_4` into the `iso_fortran_env.mod` file.  From there on, `numeric_storage_size` always reports 32 as the storage size, regardless of compiler options.

The code removed:

```C++
    if (!context.moduleFileName()) {
      // Don't fold this reference until it appears in the module file
      // for ISO_FORTRAN_ENV -- the value depends on the compiler options
      // that might be in force.
    } else {
```

https://github.com/llvm/llvm-project/pull/95388