4 Commits

Author SHA1 Message Date
Joseph Huber
5ccb7424fa [OpenMP] Change OpenMPOpt to check openmp metadata
The metadata added in D102361 introduces a module flag that we can check
to determine if the module was compiled with `-fopenmp` enables. We can
now check for the precense of this instead of scanning the call graph
for OpenMP runtime functions.

Depends on D102361

Reviewed By: jdoerfert

Differential Revision: https://reviews.llvm.org/D102423
2021-06-25 16:34:22 -04:00
Joseph Huber
30e36c9b3c [Attributor] Add interface to emit remarks in Attributor
Summary:
This patch adds support for the Attributor to emit remarks on behalf of some
other pass. The attributor can now optionally take a callback function that
returns an OptimizationRemarkEmitter object when given a Function pointer. If
this is availible then a remark will be emitted for the corresponding pass
name.

Depends on D102197

Reviewed By: sstefan1 thegameg

Differential Revision: https://reviews.llvm.org/D102444
2021-06-22 14:12:46 -04:00
Joseph Huber
03d7e61c87 [OpenMP] Internalize functions in OpenMPOpt to improve IPO passes
Summary:
Currently the attributor needs to give up if a function has external linkage.
This means that the optimization introduced in D97818 will only apply to static
functions. This change uses the Attributor to internalize OpenMP device
routines by making a copy of each function with private linkage and replacing
the uses in the module with it. This allows for the optimization to be applied
to any regular function.

Reviewed By: jdoerfert

Differential Revision: https://reviews.llvm.org/D102824
2021-06-22 12:38:10 -04:00
Joseph Huber
6fc51c9f7d [OpenMP] Replace GPU globalization calls with shared memory in the middle-end
Summary:
The changes introduced in D97680 create a simpler interface to code that needs
to be globalized. This interface is used to simplify the globalization calls in
the middle end. We can check any globalization call that is only called by a
single thread in the team and replace it with a static shared memory buffer.

Reviewed By: jdoerfert

Differential Revision: https://reviews.llvm.org/D97818
2021-06-22 11:55:44 -04:00