[ScopDetect] Conservatively handle inaccessible memory alias attributes
Commit r286294 introduced support for inaccessiblememonly and
inaccessiblemem_or_argmemonly attributes to BasicAA, which we need to
support to avoid undefined behavior. This change just refuses all calls
which are annotated with these attributes, which is conservatively correct.
In the future we may consider to model and support such function calls
in Polly.
llvm-svn: 286771
diff --git a/polly/lib/Analysis/ScopDetection.cpp b/polly/lib/Analysis/ScopDetection.cpp
index a34c4ed..d23b9d5 100644
--- a/polly/lib/Analysis/ScopDetection.cpp
+++ b/polly/lib/Analysis/ScopDetection.cpp
@@ -491,6 +491,8 @@
Context.AST.add(&CI);
return true;
case FMRB_DoesNotReadMemory:
+ case FMRB_OnlyAccessesInaccessibleMem:
+ case FMRB_OnlyAccessesInaccessibleOrArgMem:
return false;
}
}