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[ARM] Adjust how NEON shifts are lowered

Authored by dmgreen on Jul 15 2019, 3:44 AM.

Description

[ARM] Adjust how NEON shifts are lowered

This adjusts the way that we lower NEON shifts to use a DAG target node, not
via a neon intrinsic. This is useful for handling MVE shifts operations in the
same the way. It also renames some of the immediate shift nodes for
consistency, and moves some of the processing of immediate shifts into
LowerShift allowing it to capture more cases.

Differential Revision: https://reviews.llvm.org/D64426

llvm-svn: 366051

Details

Committed
dmgreenJul 15 2019, 3:44 AM
Differential Revision
D64426: [ARM] Adjust how NEON shifts are lowered
Parents
rGd021ad9fbeb6: [Loop Peeling] Fix the bug with IDom setting for exit loops
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