Douglas Gregor dbb2806a7b Do not generate LLVM IR for available_externally function bodies at ...

-O0, since we won't be using the definitions for anything anyway. For
lib/System/Path.o when built in Debug+Asserts mode, this leads to a 4%
improvement in compile time (and suppresses 440 function bodies).

<rdar://problem/7987644>

llvm-svn: 108156

2010-07-12 17:24:55 +00:00

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