[Openmp-commits] [PATCH] D157918: [Libomptarget] Support mapping indirect host calls to device functions

Johannes Doerfert via Phabricator via Openmp-commits openmp-commits at lists.llvm.org
Tue Aug 15 13:16:54 PDT 2023


jdoerfert added inline comments.


================
Comment at: openmp/libomptarget/DeviceRTL/src/Misc.cpp:86
+    return nullptr;
+
+  uint32_t Left = 0;
----------------
Check if the HstPtr is outside the table range. This should allows us to avoid the binary search for basically all host pointers in practice.


================
Comment at: openmp/libomptarget/include/omptarget.h:95
+  /// Mark the entry global as being an indirectly callable function.
+  OMP_DECLARE_TARGET_INDIRECT = 0x04
 };
----------------
RaviNarayanaswamy wrote:
> jhuber6 wrote:
> > RaviNarayanaswamy wrote:
> > > Should this be 0x08
> > I didn't design it this way, but the frontend uses different flags for globals and kernels. All the other flags overlap so why should this one be the exception without breaking ABI and redesigning it?
> You want the lookup table to be  small.  Does TARGET_DTOR get added to the indirect lookup  table?
0x08 plz


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D157918/new/

https://reviews.llvm.org/D157918



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