Cullen Rhodes 1ae2c0fb16 [AArch64][SME] Add zero instruction ... This patch adds the zero instruction for zeroing a list of 64-bit element ZA tiles. The instruction takes a list of up to eight tiles ZA0.D-ZA7.D, which must be in order, e.g. zero {za0.d,za1.d,za2.d,za3.d,za4.d,za5.d,za6.d,za7.d} zero {za1.d,za3.d,za5.d,za7.d} The assembler also accepts 32-bit, 16-bit and 8-bit element tiles which are mapped to corresponding 64-bit element tiles in accordance with the architecturally defined mapping between different element size tiles, e.g. * Zeroing ZA0.B, or the entire array name ZA, is equivalent to zeroing all eight 64-bit element tiles ZA0.D to ZA7.D. * Zeroing ZA0.S is equivalent to zeroing ZA0.D and ZA4.D. The preferred disassembly of this instruction uses the shortest list of tile names that represent the encoded immediate mask, e.g. * An immediate which encodes 64-bit element tiles ZA0.D, ZA1.D, ZA4.D and ZA5.D is disassembled as {ZA0.S, ZA1.S}. * An immediate which encodes 64-bit element tiles ZA0.D, ZA2.D, ZA4.D and ZA6.D is disassembled as {ZA0.H}. * An all-ones immediate is disassembled as {ZA}. * An all-zeros immediate is disassembled as an empty list {}. This patch adds the MatrixTileList asm operand and related parsing to support this. Depends on D105570. The reference can be found here: https://developer.arm.com/documentation/ddi0602/2021-06 Reviewed By: david-arm Differential Revision: https://reviews.llvm.org/D105575		2021-07-27 08:35:45 +00:00
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AArch64AsmParser.cpp	[AArch64][SME] Add zero instruction	2021-07-27 08:35:45 +00:00
CMakeLists.txt