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First patch in a series adding MC layer support for the Arm Scalable
Matrix Extension.
This patch adds the following features:
sme, sme-i64, sme-f64
The sme-i64 and sme-f64 flags are for the optional I16I64 and F64F64
features.
If a target supports I16I64 then the following instructions are
implemented:
* 64-bit integer ADDHA and ADDVA variants (D105570).
* SMOPA, SMOPS, SUMOPA, SUMOPS, UMOPA, UMOPS, USMOPA, and USMOPS
instructions that accumulate 16-bit integer outer products into 64-bit
integer tiles.
If a target supports F64F64 then the FMOPA and FMOPS instructions that
accumulate double-precision floating-point outer products into
double-precision tiles are implemented.
Outer products are implemented in D105571.
The reference can be found here:
https://developer.arm.com/documentation/ddi0602/2021-06
Reviewed By: CarolineConcatto
Differential Revision: https://reviews.llvm.org/D105569
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