Commit Graph

3 Commits

Author SHA1 Message Date
Justin Lebar 23d954241b [CUDA] Emit deferred diagnostics during Sema rather than during codegen.
Summary:
Emitting deferred diagnostics during codegen was a hack.  It did work,
but usability was poor, both for us as compiler devs and for users.  We
don't codegen if there are any sema errors, so for users this meant that
they wouldn't see deferred errors if there were any non-deferred errors.
For devs, this meant that we had to carefully split up our tests so that
when we tested deferred errors, we didn't emit any non-deferred errors.

This change moves checking for deferred errors into Sema.  See the big
comment in SemaCUDA.cpp for an overview of the idea.

This checking adds overhead to compilation, because we have to maintain
a partial call graph.  As a result, this change makes deferred errors a
CUDA-only concept (whereas before they were a general concept).  If
anyone else wants to use this framework for something other than CUDA,
we can generalize at that time.

This patch makes the minimal set of test changes -- after this lands,
I'll go back through and do a cleanup of the tests that we no longer
have to split up.

Reviewers: rnk

Subscribers: cfe-commits, rsmith, tra

Differential Revision: https://reviews.llvm.org/D25541

llvm-svn: 284158
2016-10-13 20:52:12 +00:00
Justin Lebar e46ea72d97 [CUDA] Emit a warning if a CUDA host/device/global attribute is placed after '(...)'.
Summary:
This is probably the sane place for the attribute to go, but nvcc
specifically rejects it.  Other GNU-style attributes are allowed in this
position (although judging from the warning it emits for
host/device/global, those attributes are applied to the lambda's
anonymous struct, not to the function itself).

It would be nice to have a FixIt message here, but doing so, or even
just getting the correct range for the attribute, including its '((' and
'))'s, is apparently Hard.

Reviewers: rnk

Subscribers: cfe-commits, tra

Differential Revision: https://reviews.llvm.org/D25115

llvm-svn: 282911
2016-09-30 19:55:55 +00:00
Justin Lebar 0fad0ba6a9 [CUDA] Handle attributes on CUDA lambdas appearing between [...] and (...).
Summary: This is ugh, but it makes us compatible with NVCC.  Fixes bug 26341.

Reviewers: rnk

Subscribers: cfe-commits, tra

Differential Revision: https://reviews.llvm.org/D25103

llvm-svn: 282879
2016-09-30 17:14:48 +00:00