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e7006bb04b
This transform was originally added in r185257 but later removed in r185415. The original transform would create instructions speculatively and then discard them if the speculation was proved incorrect. This has been replaced with a scheme that splits the transform into two parts: preflight and fold. While we preflight, we build up fold actions that inform the folding stage on how to act. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185667 91177308-0d34-0410-b5e6-96231b3b80d8
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