[clang] [llvm] [Clang][OpenMP] Codegen for `use_device_ptr(fb_nullify)`. (4/4) (PR #173931)

[Alexey Bataev via cfe-commits]

================
@@ -9199,23 +9212,25 @@ class MappableExprsHandler {
             // multiple values are added to any of the lists, the first value
             // added is being modified by the assignments below (not the last
             // value added).
-            if (StructBasePointersIdx <
-                GroupStructBaseCurInfo.BasePointers.size()) {
-              GroupStructBaseCurInfo.DevicePtrDecls[StructBasePointersIdx] =
-                  RelevantVD;
-              GroupStructBaseCurInfo.DevicePointers[StructBasePointersIdx] =
-                  L.ForDeviceAddr ? DeviceInfoTy::Address
-                                  : DeviceInfoTy::Pointer;
-              GroupStructBaseCurInfo.Types[StructBasePointersIdx] |=
-                  OpenMPOffloadMappingFlags::OMP_MAP_RETURN_PARAM;
-            } else {
-              GroupCurInfo.DevicePtrDecls[CurrentBasePointersIdx] = RelevantVD;
-              GroupCurInfo.DevicePointers[CurrentBasePointersIdx] =
-                  L.ForDeviceAddr ? DeviceInfoTy::Address
-                                  : DeviceInfoTy::Pointer;
-              GroupCurInfo.Types[CurrentBasePointersIdx] |=
+            auto SetDevicePointerInfo = [&](MapCombinedInfoTy &Info,
+                                            unsigned Idx) {
+              Info.DevicePtrDecls[Idx] = RelevantVD;
+              Info.DevicePointers[Idx] = L.ForDeviceAddr
+                                             ? DeviceInfoTy::Address
+                                             : DeviceInfoTy::Pointer;
+              Info.Types[Idx] |=
                   OpenMPOffloadMappingFlags::OMP_MAP_RETURN_PARAM;
-            }
+              if (L.HasUdpFbNullify)
+                Info.Types[Idx] |=
+                    OpenMPOffloadMappingFlags::OMP_MAP_FB_NULLIFY;
----------------
alexey-bataev wrote:

Is it supported in runtime?

https://github.com/llvm/llvm-project/pull/173931
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