Robert Lytton 32e8528c33 Add XCore support for ATOMIC_FENCE.
ATOMIC_FENCE is lowered to a compiler barrier which is codegen only. There
is no need to emit an instructions since the XCore provides sequential
consistency.

Original patch by Richard Osborne

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194464 91177308-0d34-0410-b5e6-96231b3b80d8
2013-11-12 10:11:26 +00:00
..
2012-12-16 17:29:14 +00:00
2013-07-29 09:23:13 +00:00

To-do
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* Instruction encodings
* Tailcalls
* Investigate loop alignment
* Add builtins