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Commit 1f258887 authored by Craig Topper's avatar Craig Topper
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[RISCV] Add PACKW and PACKH to isSignExtendingOpW in RISCVSExtWRemoval. 

PACKW sign extends like other W instructions.
PACKH zeroes bits 63:16 which means bits 63:31 are all zero.
parent 1a8ba9e1
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