Nick Lewycky b48a18903a Change CaptureTracking to pass a Use* instead of a Value* when a value is ... captured. This allows the tracker to look at the specific use, which may be especially interesting for function calls. Use this to fix 'nocapture' deduction in FunctionAttrs. The existing one does not iterate until a fixpoint and does not guarantee that it produces the same result regardless of iteration order. The new implementation builds up a graph of how arguments are passed from function to function, and uses a bottom-up walk on the argument-SCCs to assign nocapture. This gets us nocapture more often, and does so rather efficiently and independent of iteration order. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147327 91177308-0d34-0410-b5e6-96231b3b80d8		2011-12-28 23:24:21 +00:00
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2008-09-03-Mutual.ll
2008-09-03-ReadNone.ll
2008-09-03-ReadOnly.ll
2008-09-13-VolatileRead.ll
2008-12-29-Constant.ll
2009-01-02-LocalStores.ll
2010-10-30-volatile.ll
atomic.ll
dg.exp
nocapture.ll	Change CaptureTracking to pass a Use* instead of a Value* when a value is	2011-12-28 23:24:21 +00:00