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This introduces a new decoding table for MVE instructions, and starts by adding the family of scalar shift instructions that are part of the MVE architecture extension: saturating shifts within a single GPR, and long shifts across a pair of GPRs (both saturating and normal). Some of these shift instructions have only 3-bit register fields in the encoding, with the low bit fixed. So they can only address an odd or even numbered GPR (depending on the operand), and therefore I add two new register classes, GPREven and GPROdd. Differential Revision: https://reviews.llvm.org/D62668 Change-Id: Iad95d5f83d26aef70c674027a184a6b1e0098d33 llvm-svn: 363051 |
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