[AArch64]SME2 Multi-vector - Index/Single/Multi Array Vectors FMA sources
This patch adds the assembly/disassembly for the following instructions:
INT:
SMLAL
SMLSL
UMLAL
UMLSL
FP:
BFMLAL
BFMLSL
FMLAL
FMLSL
For multiple and indexed vector, Multiple and Single vector and
Multi vectors, for 1, 2 and 4 ZA registers.
The reference can be found here:
https://developer.arm.com/documentation/ddi0602/2022-09
It also adds a new immediate:
uimm3s2range for off3
uimm2s2range for off2
to represent the vector select offset.
The new operands have the range between the first and the last vector position.
Depends on: D135563
Reviewed By: aemerson, sdesmalen
Re-landing the patch as the problem with https://reviews.llvm.org/D135563
is fixed in this commit:
1e4f82c2578cf5045ffe
Differential Revision: https://reviews.llvm.org/D135785