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Commit 0a895c39 authored by Craig Topper's avatar Craig Topper
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[RISCV] Add isAsCheapAsAMove to FLI instructions. 

This can prevent unnecessarily hoisting out of loops.

Test case cribbed from AArch64.

I also intend to make them rematerializable.

Differential Revision: https://reviews.llvm.org/D146314
parent f36ec414
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