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Since the information is known we can simply use it at the call site.
This is especially useful for callbacks but also helps regular calls.
The test changes are mechanical.
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This is the second step after D67871 to make use of abstract call sites.
In this patch the argument we associate with a abstract call site
argument can be the one in the callback callee instead of the one in the
callback broker.
Caveat: We cannot allow no-alias arguments for problematic callbacks:
As described in [1], adding no-alias (or restrict) to arguments could
break synchronization as the synchronization effect, e.g., a barrier,
does not "alias" with the pointer anymore. This disables no-alias
annotation for potentially problematic arguments until we implement the
fix described in [1].
Reviewed By: uenoku
Differential Revision: https://reviews.llvm.org/D68008
[1] Compiler Optimizations for OpenMP, J. Doerfert and H. Finkel,
International Workshop on OpenMP 2018,
http://compilers.cs.uni-saarland.de/people/doerfert/par_opt18.pdf
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test folder
Summary:
This patch moves the test cases related to Attributor to `Transforms/Attributor` folder.
We have used `Transforms/FunctionAttrs` as the primary folder for Attributor test but we need to change testing way now.
For the test cases which I think functionattrs doesn't infer anything something like (willreturn, nosync, value-simplify, h2s ..etc), I moved them with the command `git mv`.
For the test cases in which functoinattrs and attributor are tested, I copied the test to the folder and remove the check only used by functoinattrs.
Reviewers: jdoerfert, sstefan1
Reviewed By: jdoerfert
Subscribers: jfb, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D70843
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