HomePhabricator

[ARM] First MVE instructions: scalar shifts.

Authored by miyuki on Jun 11 2019, 5:04 AM.

Description

[ARM] First MVE instructions: scalar shifts.

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

Details

Committed
miyukiJun 11 2019, 5:04 AM
Differential Revision
D62668: [ARM] First MVE instructions: scalar shifts.
Parents
rGdd6019526de2: Let writeWindowsResourceCOFF() take a TimeStamp parameter
Branches
Unknown
Tags
Unknown