Merge branch 'ndk/machinefiles/PM-add-arg-pack-flag-gnu10' into next …

…(PR #4836)

Add a flag to disable new behavior in gnu v10. For now, just do this only for Perlmutter and gnu v10+.

This PR adds to new files to be specific to Perlmutter for now.

Flag itself does not change results, but the tests were hitting errors without it.

cime_config/machines/Depends.perlmutter.gnu.cmake

@@ -0,0 +1,14 @@
+list(APPEND NO_INLINE_ARG_PACKING_LIST
+  eam/src/dynamics/se/inidat.F90
+)
+
+if (CMAKE_Fortran_COMPILER_VERSION VERSION_GREATER_EQUAL 10)
+
+  if (NOT DEBUG)
+    # new in gnu10, inline arg packing was causing INF values with SMS_P4x1.ne4pg2_ne4pg2.F-MMFXX
+    foreach(ITEM IN LISTS NO_INLINE_ARG_PACKING_LIST)
+      e3sm_add_flags("${ITEM}" " -fno-inline-arg-packing")
+    endforeach()
+  endif()
+
+endif()

cime_config/machines/Depends.perlmutter.gnugpu.cmake

@@ -0,0 +1,15 @@
+list(APPEND NO_INLINE_ARG_PACKING_LIST
+  eam/src/dynamics/se/inidat.F90
+)
+
+if (CMAKE_Fortran_COMPILER_VERSION VERSION_GREATER_EQUAL 10)
+
+  if (NOT DEBUG)
+    # new in gnu10, inline arg packing was causing INF values with SMS_P4x1.ne4pg2_ne4pg2.F-MMFXX
+    foreach(ITEM IN LISTS NO_INLINE_ARG_PACKING_LIST)
+      e3sm_add_flags("${ITEM}" " -fno-inline-arg-packing")
+    endforeach()
+  endif()
+
+endif()
+