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Commit f3b6f583 authored by Craig Topper's avatar Craig Topper
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[X86] Add a combine for back to back VSRAI instructions 

Expansion of SIGN_EXTEND_INREG can create a VSRAI instruction. If there is already a VSRAI after it, we should combine them into a larger VSRAI

Differential Revision: https://reviews.llvm.org/D54959

llvm-svn: 347784
parent 9a494eac
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