This makes sure we don't generate a lot of code to spill/reload
CSRs when calling tls_init from the access functions.
This helps performance when tls_init is not inlined into the access
functions.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@263854 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is a follow-up to r251734, r251476, and r249735, which fixes
a bug where function attributes were not attached to thread local
wrapper functions.
rdar://problem/20828324
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@257865 91177308-0d34-0410-b5e6-96231b3b80d8
This is about how we handle static member of a template. Before this commit,
we use internal linkage for the IR thread-local variable, which is inefficient.
With this commit, we will start to follow Itanium C++ ABI.
rdar://problem/23415206
Reviewed by John McCall.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@252814 91177308-0d34-0410-b5e6-96231b3b80d8
Because references must be initialized using some evaluated expression, they
must point to something, and a callee can assume the reference parameter is
dereferenceable. Taking advantage of a new attribute just added to LLVM, mark
them as such.
Because dereferenceability in addrspace(0) implies nonnull in the backend, we
don't need both attributes. However, we need to know the size of the object to
use the dereferenceable attribute, so for incomplete types we still emit only
nonnull.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@213386 91177308-0d34-0410-b5e6-96231b3b80d8
Manman Ren