[flang] [llvm] [flang] Implement DSECNDS intrinsic (PGI extension) (PR #157573)

[Tom Eccles via llvm-commits]

================
@@ -0,0 +1,23 @@
+! RUN: bbc -emit-fir -hlfir=false %s -o - | FileCheck %s
----------------
tblah wrote:

Please could you test using HLFIR. The old lowering directly to FIR is deprecated and unused.

```suggestion
! RUN: bbc -emit-hlfir %s -o - | FileCheck %s
```

https://github.com/llvm/llvm-project/pull/157573