Erik Eckstein a75a7f25f9 Re-instate: "SILPassManager: After a new function is pushed on the stack don't restart the pipeline on the old function." ...

This re-instates commit de9622654d

The problem of the infinite loop should be fixed by the previous fix in FunctionSignatureOpts.
In addition this new commit implements a safety check to void such cases, even if buggy optimizations try to keep pushing new functions onto the work list.

2016-08-19 14:04:49 -07:00

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