I am trying to use accelerator directives (!$acc region) around a do loop with function calls in it. Since these are not supported, I need to inline them. The inline is successful (according in the -Minfo compiler report) but I still get an “accelerator region ignored” message but for only one of the five subroutines inlined I get the following explanation:
Accelerator restriction: unsupported operation: ACON
My question is what is the operation ACON? This seems to be some internal compiler operation. The subroutine does reshape the arrays passed to it but other than that appears to do nothing unusual and is similar to the other four that appear to be okay (or at least produced no warnings)
I am using
pgf90 11.7-0 64-bit target on x86-64 Linux -tp istanbul
and I compile with the flags:
-Minline=reshape,binvcrhsk… list of subroutines to inline
Any comments would be appreciated.