Summary:
Currently, the SafeStack analysis disallows out-of-bounds writes but not
out-of-bounds reads for mem intrinsics like llvm.memcpy. This could
cause leaks of pointers to the safe stack by leaking spilled registers/
frame pointers. Check for allocas used as source or destination pointers
to mem intrinsics.
Reviewers: eugenis
Reviewed By: eugenis
Subscribers: pcc, llvm-commits, kcc
Differential Revision: https://reviews.llvm.org/D51334
llvm-svn: 341116
