tree ee6e202d3e6e2b0be339de790705a18a6213c06e
parent 568e2616ed4adb82f420740b14481ee1e8b3d980
author David Green <david.green@arm.com> 1638545278 +0000
committer Copybara-Service <copybara-worker@google.com> 1638545504 -0800

[ARM] Use v2i1 for MVE and CDE intrinsics

This adjusts all the MVE and CDE intrinsics now that v2i1 is a legal
type, to use a <2 x i1> as opposed to emulating the predicate with a
<4 x i1>. The v4i1 workarounds have been removed leaving the natural
v2i1 types, notably in vctp64 which now generates a v2i1 type.

AutoUpgrade code has been added to upgrade old IR, which needs to
convert the old v4i1 to a v2i1 be converting it back and forth to an
integer with arm.mve.v2i and arm.mve.i2v intrinsics. These should be
optimized away in the final assembly.

Differential Revision: https://reviews.llvm.org/D114455

GitOrigin-RevId: ab0c5cea0b1a9a1227fea840184dd7b5983c22a5