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5dc22183f9
a single block into the helper routine. This takes advantage of the fact that we can directly replace uses prior to any store with undef to simplify matters and unconditionally promote allocas only used within one block. I've removed the special handling for the case of no stores existing. This has no semantic effect but might slow things down. I'll fix that in a later patch when I refactor this entire thing to be easier to manage the different cases. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186783 91177308-0d34-0410-b5e6-96231b3b80d8
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