Akira Hatanaka b74db09c97 [AArch64, fast-isel] Fall back to SelectionDAG to select tail calls.
Certain functions such as objc_autoreleaseReturnValue have to be called as
tail-calls even at -O0. Since normal fast-isel doesn't emit calls as tail calls,
we have to fall back to SelectionDAG to select calls that are marked as tail.

<rdar://problem/17991614>

llvm-svn: 215600
2014-08-13 23:23:58 +00:00
2014-08-13 22:44:37 +00:00
2014-08-13 19:39:08 +00:00
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