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This repository was archived by the owner on Mar 28, 2020. It is now read-only.
[AArch64 ] Generate a BFXIL from 'or (and X, Mask0Imm),(and Y, Mask1Imm)'.
Mask0Imm and ~Mask1Imm must be equivalent and one of the MaskImms is a shifted
mask (e.g., 0x000ffff0). Both 'and's must have a single use.
This changes code like:
and w8, w0, #0xffff000f
and w9, w1, #0x0000fff0
orr w0, w9, w8
into
lsr w8, w1, #4
bfi w0, w8, #4, #12
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@270063 91177308-0d34-0410-b5e6-96231b3b80d8
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