Bin Cheng dfec0b3053 [FuncSpec] Save compilation time by caching uses for propagation ...

We only need to do propagation on use instructions of the original
value, rather than the replacing const value which might have lots
of irrelavant uses.  This is done by caching uses before replacing.

Differential Revision: https://reviews.llvm.org/D119815

2022-02-16 10:46:26 +08:00

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