Dale Johannesen e2289285ae Changes to ARM tail calls, mostly cosmetic. ...

Add explicit testcases for tail calls within the same module.
Duplicate some code to humor those who think .w doesn't apply on ARM.
Leave this disabled on Thumb1, and add some comments explaining why it's hard
and won't gain much.

llvm-svn: 107851

2010-07-08 01:18:23 +00:00

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