[Openmp-commits] [PATCH] D14031: [OpenMP] Initial implementation of OpenMP offloading library - libomptarget.

Jonas Hahnfeld via Openmp-commits openmp-commits at lists.llvm.org
Wed Jan 6 23:53:26 PST 2016

Hahnfeld added a comment.

In http://reviews.llvm.org/D14031#320528, @RaviNarayanaswamy wrote:

> OpenMP says : " If the corresponding list item is not present in the device data environment then no assignment occurs to or from the original list item."
> Device.IsInit being false can be one's implementation as the list item not present in the device data environment.
> Ravi

Sorry for not directly posting the code in question that I had in mind:

  #include <stdio.h>
  #pragma omp declare target
  int a = 1;
  #pragma omp end declare target
  int main(int argc, char* argv[]) {
  	a = 2;
  	#pragma omp target update to(a)
  	#pragma omp target
  		printf("a = %d\n", a);
  	return 0;

What would the expected result be? However I just noticed that yesterday's simple `init()` didn't change it to `2` because the code and global variables are still only mapped in the first `omp target`...


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