On Thu, 20 Sep 2018 09:49:43 -0700 Cesar Philippidis <ce...@codesourcery.com> wrote:
> OpenACC as a concept of loop independence, in which independent loops > may be executed in parallel across gangs, workers and vectors. Inside > acc parallel regions, if a loop isn't explicitly marked seq or auto, > it is predetermined to be independent. > > This patch corrects a bug where acc loops marked as auto were being > mistakenly promoted to independent. That's bad because it can generate > bogus results if a dependency exist. > > Note that this patch depends on the following patches for > -fnote-info-omp-optimized which is used in a test case. > > * Add user-friendly OpenACC diagnostics regarding detected > parallelism. > https://gcc.gnu.org/ml/gcc-patches/2018-07/msg01652.html > > * Correct the reported line number in fortran combined OpenACC > directives > https://gcc.gnu.org/ml/gcc-patches/2018-07/msg01554.html > > * Correct the reported line number in c++ combined OpenACC > directives https://gcc.gnu.org/ml/gcc-patches/2018-07/msg01552.html > > Is this OK for trunk? I bootstrapped and regtested on x86_64 Linux > with nvptx offloading. LGTM, FWIW. Thanks, Julian
