# AArch64 SVE instruction descriptions # # Copyright (c) 2017 Linaro, Ltd # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, see . # # This file is processed by scripts/decodetree.py # ########################################################################### # Named fields. These are primarily for disjoint fields. %imm4_16_p1 16:4 !function=plus1 %imm6_22_5 22:1 5:5 %imm7_22_16 22:2 16:5 %imm8_16_10 16:5 10:3 %imm9_16_10 16:s6 10:3 # A combination of tsz:imm3 -- extract esize. %tszimm_esz 22:2 5:5 !function=tszimm_esz # A combination of tsz:imm3 -- extract (2 * esize) - (tsz:imm3) %tszimm_shr 22:2 5:5 !function=tszimm_shr # A combination of tsz:imm3 -- extract (tsz:imm3) - esize %tszimm_shl 22:2 5:5 !function=tszimm_shl # Similarly for the tszh/tszl pair at 22/16 for zzi %tszimm16_esz 22:2 16:5 !function=tszimm_esz %tszimm16_shr 22:2 16:5 !function=tszimm_shr %tszimm16_shl 22:2 16:5 !function=tszimm_shl # Signed 8-bit immediate, optionally shifted left by 8. %sh8_i8s 5:9 !function=expand_imm_sh8s # Either a copy of rd (at bit 0), or a different source # as propagated via the MOVPRFX instruction. %reg_movprfx 0:5 ########################################################################### # Named attribute sets. These are used to make nice(er) names # when creating helpers common to those for the individual # instruction patterns. &rr_esz rd rn esz &rri rd rn imm &rr_dbm rd rn dbm &rrri rd rn rm imm &rri_esz rd rn imm esz &rrr_esz rd rn rm esz &rpr_esz rd pg rn esz &rprr_s rd pg rn rm s &rprr_esz rd pg rn rm esz &rprrr_esz rd pg rn rm ra esz &rpri_esz rd pg rn imm esz &ptrue rd esz pat s &incdec_cnt rd pat esz imm d u &incdec2_cnt rd rn pat esz imm d u ########################################################################### # Named instruction formats. These are generally used to # reduce the amount of duplication between instruction patterns. # Two operand with unused vector element size @pd_pn_e0 ........ ........ ....... rn:4 . rd:4 &rr_esz esz=0 # Two operand @pd_pn ........ esz:2 .. .... ....... rn:4 . rd:4 &rr_esz @rd_rn ........ esz:2 ...... ...... rn:5 rd:5 &rr_esz # Three operand with unused vector element size @rd_rn_rm_e0 ........ ... rm:5 ... ... rn:5 rd:5 &rrr_esz esz=0 # Three predicate operand, with governing predicate, flag setting @pd_pg_pn_pm_s ........ . s:1 .. rm:4 .. pg:4 . rn:4 . rd:4 &rprr_s # Three operand, vector element size @rd_rn_rm ........ esz:2 . rm:5 ... ... rn:5 rd:5 &rrr_esz @pd_pn_pm ........ esz:2 .. rm:4 ....... rn:4 . rd:4 &rrr_esz @rdn_rm ........ esz:2 ...... ...... rm:5 rd:5 \ &rrr_esz rn=%reg_movprfx # Three operand with "memory" size, aka immediate left shift @rd_rn_msz_rm ........ ... rm:5 .... imm:2 rn:5 rd:5 &rrri # Two register operand, with governing predicate, vector element size @rdn_pg_rm ........ esz:2 ... ... ... pg:3 rm:5 rd:5 \ &rprr_esz rn=%reg_movprfx @rdm_pg_rn ........ esz:2 ... ... ... pg:3 rn:5 rd:5 \ &rprr_esz rm=%reg_movprfx @rd_pg4_rn_rm ........ esz:2 . rm:5 .. pg:4 rn:5 rd:5 &rprr_esz # Three register operand, with governing predicate, vector element size @rda_pg_rn_rm ........ esz:2 . rm:5 ... pg:3 rn:5 rd:5 \ &rprrr_esz ra=%reg_movprfx @rdn_pg_ra_rm ........ esz:2 . rm:5 ... pg:3 ra:5 rd:5 \ &rprrr_esz rn=%reg_movprfx # One register operand, with governing predicate, vector element size @rd_pg_rn ........ esz:2 ... ... ... pg:3 rn:5 rd:5 &rpr_esz # Two register operands with a 6-bit signed immediate. @rd_rn_i6 ........ ... rn:5 ..... imm:s6 rd:5 &rri # Two register operand, one immediate operand, with predicate, # element size encoded as TSZHL. User must fill in imm. @rdn_pg_tszimm ........ .. ... ... ... pg:3 ..... rd:5 \ &rpri_esz rn=%reg_movprfx esz=%tszimm_esz # Similarly without predicate. @rd_rn_tszimm ........ .. ... ... ...... rn:5 rd:5 \ &rri_esz esz=%tszimm16_esz # Two register operand, one immediate operand, with 4-bit predicate. # User must fill in imm. @rdn_pg4 ........ esz:2 .. pg:4 ... ........ rd:5 \ &rpri_esz rn=%reg_movprfx # Two register operand, one encoded bitmask. @rdn_dbm ........ .. .... dbm:13 rd:5 \ &rr_dbm rn=%reg_movprfx # Basic Load/Store with 9-bit immediate offset @pd_rn_i9 ........ ........ ...... rn:5 . rd:4 \ &rri imm=%imm9_16_10 @rd_rn_i9 ........ ........ ...... rn:5 rd:5 \ &rri imm=%imm9_16_10 # One register, pattern, and uint4+1. # User must fill in U and D. @incdec_cnt ........ esz:2 .. .... ...... pat:5 rd:5 \ &incdec_cnt imm=%imm4_16_p1 @incdec2_cnt ........ esz:2 .. .... ...... pat:5 rd:5 \ &incdec2_cnt imm=%imm4_16_p1 rn=%reg_movprfx ########################################################################### # Instruction patterns. Grouped according to the SVE encodingindex.xhtml. ### SVE Integer Arithmetic - Binary Predicated Group # SVE bitwise logical vector operations (predicated) ORR_zpzz 00000100 .. 011 000 000 ... ..... ..... @rdn_pg_rm EOR_zpzz 00000100 .. 011 001 000 ... ..... ..... @rdn_pg_rm AND_zpzz 00000100 .. 011 010 000 ... ..... ..... @rdn_pg_rm BIC_zpzz 00000100 .. 011 011 000 ... ..... ..... @rdn_pg_rm # SVE integer add/subtract vectors (predicated) ADD_zpzz 00000100 .. 000 000 000 ... ..... ..... @rdn_pg_rm SUB_zpzz 00000100 .. 000 001 000 ... ..... ..... @rdn_pg_rm SUB_zpzz 00000100 .. 000 011 000 ... ..... ..... @rdm_pg_rn # SUBR # SVE integer min/max/difference (predicated) SMAX_zpzz 00000100 .. 001 000 000 ... ..... ..... @rdn_pg_rm UMAX_zpzz 00000100 .. 001 001 000 ... ..... ..... @rdn_pg_rm SMIN_zpzz 00000100 .. 001 010 000 ... ..... ..... @rdn_pg_rm UMIN_zpzz 00000100 .. 001 011 000 ... ..... ..... @rdn_pg_rm SABD_zpzz 00000100 .. 001 100 000 ... ..... ..... @rdn_pg_rm UABD_zpzz 00000100 .. 001 101 000 ... ..... ..... @rdn_pg_rm # SVE integer multiply/divide (predicated) MUL_zpzz 00000100 .. 010 000 000 ... ..... ..... @rdn_pg_rm SMULH_zpzz 00000100 .. 010 010 000 ... ..... ..... @rdn_pg_rm UMULH_zpzz 00000100 .. 010 011 000 ... ..... ..... @rdn_pg_rm # Note that divide requires size >= 2; below 2 is unallocated. SDIV_zpzz 00000100 .. 010 100 000 ... ..... ..... @rdn_pg_rm UDIV_zpzz 00000100 .. 010 101 000 ... ..... ..... @rdn_pg_rm SDIV_zpzz 00000100 .. 010 110 000 ... ..... ..... @rdm_pg_rn # SDIVR UDIV_zpzz 00000100 .. 010 111 000 ... ..... ..... @rdm_pg_rn # UDIVR ### SVE Integer Reduction Group # SVE bitwise logical reduction (predicated) ORV 00000100 .. 011 000 001 ... ..... ..... @rd_pg_rn EORV 00000100 .. 011 001 001 ... ..... ..... @rd_pg_rn ANDV 00000100 .. 011 010 001 ... ..... ..... @rd_pg_rn # SVE integer add reduction (predicated) # Note that saddv requires size != 3. UADDV 00000100 .. 000 001 001 ... ..... ..... @rd_pg_rn SADDV 00000100 .. 000 000 001 ... ..... ..... @rd_pg_rn # SVE integer min/max reduction (predicated) SMAXV 00000100 .. 001 000 001 ... ..... ..... @rd_pg_rn UMAXV 00000100 .. 001 001 001 ... ..... ..... @rd_pg_rn SMINV 00000100 .. 001 010 001 ... ..... ..... @rd_pg_rn UMINV 00000100 .. 001 011 001 ... ..... ..... @rd_pg_rn ### SVE Shift by Immediate - Predicated Group # SVE bitwise shift by immediate (predicated) ASR_zpzi 00000100 .. 000 000 100 ... .. ... ..... \ @rdn_pg_tszimm imm=%tszimm_shr LSR_zpzi 00000100 .. 000 001 100 ... .. ... ..... \ @rdn_pg_tszimm imm=%tszimm_shr LSL_zpzi 00000100 .. 000 011 100 ... .. ... ..... \ @rdn_pg_tszimm imm=%tszimm_shl ASRD 00000100 .. 000 100 100 ... .. ... ..... \ @rdn_pg_tszimm imm=%tszimm_shr # SVE bitwise shift by vector (predicated) ASR_zpzz 00000100 .. 010 000 100 ... ..... ..... @rdn_pg_rm LSR_zpzz 00000100 .. 010 001 100 ... ..... ..... @rdn_pg_rm LSL_zpzz 00000100 .. 010 011 100 ... ..... ..... @rdn_pg_rm ASR_zpzz 00000100 .. 010 100 100 ... ..... ..... @rdm_pg_rn # ASRR LSR_zpzz 00000100 .. 010 101 100 ... ..... ..... @rdm_pg_rn # LSRR LSL_zpzz 00000100 .. 010 111 100 ... ..... ..... @rdm_pg_rn # LSLR # SVE bitwise shift by wide elements (predicated) # Note these require size != 3. ASR_zpzw 00000100 .. 011 000 100 ... ..... ..... @rdn_pg_rm LSR_zpzw 00000100 .. 011 001 100 ... ..... ..... @rdn_pg_rm LSL_zpzw 00000100 .. 011 011 100 ... ..... ..... @rdn_pg_rm ### SVE Integer Arithmetic - Unary Predicated Group # SVE unary bit operations (predicated) # Note esz != 0 for FABS and FNEG. CLS 00000100 .. 011 000 101 ... ..... ..... @rd_pg_rn CLZ 00000100 .. 011 001 101 ... ..... ..... @rd_pg_rn CNT_zpz 00000100 .. 011 010 101 ... ..... ..... @rd_pg_rn CNOT 00000100 .. 011 011 101 ... ..... ..... @rd_pg_rn NOT_zpz 00000100 .. 011 110 101 ... ..... ..... @rd_pg_rn FABS 00000100 .. 011 100 101 ... ..... ..... @rd_pg_rn FNEG 00000100 .. 011 101 101 ... ..... ..... @rd_pg_rn # SVE integer unary operations (predicated) # Note esz > original size for extensions. ABS 00000100 .. 010 110 101 ... ..... ..... @rd_pg_rn NEG 00000100 .. 010 111 101 ... ..... ..... @rd_pg_rn SXTB 00000100 .. 010 000 101 ... ..... ..... @rd_pg_rn UXTB 00000100 .. 010 001 101 ... ..... ..... @rd_pg_rn SXTH 00000100 .. 010 010 101 ... ..... ..... @rd_pg_rn UXTH 00000100 .. 010 011 101 ... ..... ..... @rd_pg_rn SXTW 00000100 .. 010 100 101 ... ..... ..... @rd_pg_rn UXTW 00000100 .. 010 101 101 ... ..... ..... @rd_pg_rn ### SVE Integer Multiply-Add Group # SVE integer multiply-add writing addend (predicated) MLA 00000100 .. 0 ..... 010 ... ..... ..... @rda_pg_rn_rm MLS 00000100 .. 0 ..... 011 ... ..... ..... @rda_pg_rn_rm # SVE integer multiply-add writing multiplicand (predicated) MLA 00000100 .. 0 ..... 110 ... ..... ..... @rdn_pg_ra_rm # MAD MLS 00000100 .. 0 ..... 111 ... ..... ..... @rdn_pg_ra_rm # MSB ### SVE Integer Arithmetic - Unpredicated Group # SVE integer add/subtract vectors (unpredicated) ADD_zzz 00000100 .. 1 ..... 000 000 ..... ..... @rd_rn_rm SUB_zzz 00000100 .. 1 ..... 000 001 ..... ..... @rd_rn_rm SQADD_zzz 00000100 .. 1 ..... 000 100 ..... ..... @rd_rn_rm UQADD_zzz 00000100 .. 1 ..... 000 101 ..... ..... @rd_rn_rm SQSUB_zzz 00000100 .. 1 ..... 000 110 ..... ..... @rd_rn_rm UQSUB_zzz 00000100 .. 1 ..... 000 111 ..... ..... @rd_rn_rm ### SVE Logical - Unpredicated Group # SVE bitwise logical operations (unpredicated) AND_zzz 00000100 00 1 ..... 001 100 ..... ..... @rd_rn_rm_e0 ORR_zzz 00000100 01 1 ..... 001 100 ..... ..... @rd_rn_rm_e0 EOR_zzz 00000100 10 1 ..... 001 100 ..... ..... @rd_rn_rm_e0 BIC_zzz 00000100 11 1 ..... 001 100 ..... ..... @rd_rn_rm_e0 ### SVE Index Generation Group # SVE index generation (immediate start, immediate increment) INDEX_ii 00000100 esz:2 1 imm2:s5 010000 imm1:s5 rd:5 # SVE index generation (immediate start, register increment) INDEX_ir 00000100 esz:2 1 rm:5 010010 imm:s5 rd:5 # SVE index generation (register start, immediate increment) INDEX_ri 00000100 esz:2 1 imm:s5 010001 rn:5 rd:5 # SVE index generation (register start, register increment) INDEX_rr 00000100 .. 1 ..... 010011 ..... ..... @rd_rn_rm ### SVE Stack Allocation Group # SVE stack frame adjustment ADDVL 00000100 001 ..... 01010 ...... ..... @rd_rn_i6 ADDPL 00000100 011 ..... 01010 ...... ..... @rd_rn_i6 # SVE stack frame size RDVL 00000100 101 11111 01010 imm:s6 rd:5 ### SVE Bitwise Shift - Unpredicated Group # SVE bitwise shift by immediate (unpredicated) ASR_zzi 00000100 .. 1 ..... 1001 00 ..... ..... \ @rd_rn_tszimm imm=%tszimm16_shr LSR_zzi 00000100 .. 1 ..... 1001 01 ..... ..... \ @rd_rn_tszimm imm=%tszimm16_shr LSL_zzi 00000100 .. 1 ..... 1001 11 ..... ..... \ @rd_rn_tszimm imm=%tszimm16_shl # SVE bitwise shift by wide elements (unpredicated) # Note esz != 3 ASR_zzw 00000100 .. 1 ..... 1000 00 ..... ..... @rd_rn_rm LSR_zzw 00000100 .. 1 ..... 1000 01 ..... ..... @rd_rn_rm LSL_zzw 00000100 .. 1 ..... 1000 11 ..... ..... @rd_rn_rm ### SVE Compute Vector Address Group # SVE vector address generation ADR_s32 00000100 00 1 ..... 1010 .. ..... ..... @rd_rn_msz_rm ADR_u32 00000100 01 1 ..... 1010 .. ..... ..... @rd_rn_msz_rm ADR_p32 00000100 10 1 ..... 1010 .. ..... ..... @rd_rn_msz_rm ADR_p64 00000100 11 1 ..... 1010 .. ..... ..... @rd_rn_msz_rm ### SVE Integer Misc - Unpredicated Group # SVE floating-point exponential accelerator # Note esz != 0 FEXPA 00000100 .. 1 00000 101110 ..... ..... @rd_rn # SVE floating-point trig select coefficient # Note esz != 0 FTSSEL 00000100 .. 1 ..... 101100 ..... ..... @rd_rn_rm ### SVE Element Count Group # SVE element count CNT_r 00000100 .. 10 .... 1110 0 0 ..... ..... @incdec_cnt d=0 u=1 # SVE inc/dec register by element count INCDEC_r 00000100 .. 11 .... 1110 0 d:1 ..... ..... @incdec_cnt u=1 # SVE saturating inc/dec register by element count SINCDEC_r_32 00000100 .. 10 .... 1111 d:1 u:1 ..... ..... @incdec_cnt SINCDEC_r_64 00000100 .. 11 .... 1111 d:1 u:1 ..... ..... @incdec_cnt # SVE inc/dec vector by element count # Note this requires esz != 0. INCDEC_v 00000100 .. 1 1 .... 1100 0 d:1 ..... ..... @incdec2_cnt u=1 # SVE saturating inc/dec vector by element count # Note these require esz != 0. SINCDEC_v 00000100 .. 1 0 .... 1100 d:1 u:1 ..... ..... @incdec2_cnt ### SVE Bitwise Immediate Group # SVE bitwise logical with immediate (unpredicated) ORR_zzi 00000101 00 0000 ............. ..... @rdn_dbm EOR_zzi 00000101 01 0000 ............. ..... @rdn_dbm AND_zzi 00000101 10 0000 ............. ..... @rdn_dbm # SVE broadcast bitmask immediate DUPM 00000101 11 0000 dbm:13 rd:5 ### SVE Integer Wide Immediate - Predicated Group # SVE copy floating-point immediate (predicated) FCPY 00000101 .. 01 .... 110 imm:8 ..... @rdn_pg4 # SVE copy integer immediate (predicated) CPY_m_i 00000101 .. 01 .... 01 . ........ ..... @rdn_pg4 imm=%sh8_i8s CPY_z_i 00000101 .. 01 .... 00 . ........ ..... @rdn_pg4 imm=%sh8_i8s ### SVE Permute - Extract Group # SVE extract vector (immediate offset) EXT 00000101 001 ..... 000 ... rm:5 rd:5 \ &rrri rn=%reg_movprfx imm=%imm8_16_10 ### SVE Permute - Unpredicated Group # SVE broadcast general register DUP_s 00000101 .. 1 00000 001110 ..... ..... @rd_rn # SVE broadcast indexed element DUP_x 00000101 .. 1 ..... 001000 rn:5 rd:5 \ &rri imm=%imm7_22_16 # SVE insert SIMD&FP scalar register INSR_f 00000101 .. 1 10100 001110 ..... ..... @rdn_rm # SVE insert general register INSR_r 00000101 .. 1 00100 001110 ..... ..... @rdn_rm # SVE reverse vector elements REV_v 00000101 .. 1 11000 001110 ..... ..... @rd_rn # SVE vector table lookup TBL 00000101 .. 1 ..... 001100 ..... ..... @rd_rn_rm # SVE unpack vector elements UNPK 00000101 esz:2 1100 u:1 h:1 001110 rn:5 rd:5 ### SVE Permute - Predicates Group # SVE permute predicate elements ZIP1_p 00000101 .. 10 .... 010 000 0 .... 0 .... @pd_pn_pm ZIP2_p 00000101 .. 10 .... 010 001 0 .... 0 .... @pd_pn_pm UZP1_p 00000101 .. 10 .... 010 010 0 .... 0 .... @pd_pn_pm UZP2_p 00000101 .. 10 .... 010 011 0 .... 0 .... @pd_pn_pm TRN1_p 00000101 .. 10 .... 010 100 0 .... 0 .... @pd_pn_pm TRN2_p 00000101 .. 10 .... 010 101 0 .... 0 .... @pd_pn_pm # SVE reverse predicate elements REV_p 00000101 .. 11 0100 010 000 0 .... 0 .... @pd_pn # SVE unpack predicate elements PUNPKLO 00000101 00 11 0000 010 000 0 .... 0 .... @pd_pn_e0 PUNPKHI 00000101 00 11 0001 010 000 0 .... 0 .... @pd_pn_e0 ### SVE Permute - Interleaving Group # SVE permute vector elements ZIP1_z 00000101 .. 1 ..... 011 000 ..... ..... @rd_rn_rm ZIP2_z 00000101 .. 1 ..... 011 001 ..... ..... @rd_rn_rm UZP1_z 00000101 .. 1 ..... 011 010 ..... ..... @rd_rn_rm UZP2_z 00000101 .. 1 ..... 011 011 ..... ..... @rd_rn_rm TRN1_z 00000101 .. 1 ..... 011 100 ..... ..... @rd_rn_rm TRN2_z 00000101 .. 1 ..... 011 101 ..... ..... @rd_rn_rm ### SVE Permute - Predicated Group # SVE compress active elements # Note esz >= 2 COMPACT 00000101 .. 100001 100 ... ..... ..... @rd_pg_rn # SVE conditionally broadcast element to vector CLASTA_z 00000101 .. 10100 0 100 ... ..... ..... @rdn_pg_rm CLASTB_z 00000101 .. 10100 1 100 ... ..... ..... @rdn_pg_rm # SVE conditionally copy element to SIMD&FP scalar CLASTA_v 00000101 .. 10101 0 100 ... ..... ..... @rd_pg_rn CLASTB_v 00000101 .. 10101 1 100 ... ..... ..... @rd_pg_rn # SVE conditionally copy element to general register CLASTA_r 00000101 .. 11000 0 101 ... ..... ..... @rd_pg_rn CLASTB_r 00000101 .. 11000 1 101 ... ..... ..... @rd_pg_rn # SVE copy element to SIMD&FP scalar register LASTA_v 00000101 .. 10001 0 100 ... ..... ..... @rd_pg_rn LASTB_v 00000101 .. 10001 1 100 ... ..... ..... @rd_pg_rn # SVE copy element to general register LASTA_r 00000101 .. 10000 0 101 ... ..... ..... @rd_pg_rn LASTB_r 00000101 .. 10000 1 101 ... ..... ..... @rd_pg_rn # SVE copy element from SIMD&FP scalar register CPY_m_v 00000101 .. 100000 100 ... ..... ..... @rd_pg_rn # SVE copy element from general register to vector (predicated) CPY_m_r 00000101 .. 101000 101 ... ..... ..... @rd_pg_rn # SVE reverse within elements # Note esz >= operation size REVB 00000101 .. 1001 00 100 ... ..... ..... @rd_pg_rn REVH 00000101 .. 1001 01 100 ... ..... ..... @rd_pg_rn REVW 00000101 .. 1001 10 100 ... ..... ..... @rd_pg_rn RBIT 00000101 .. 1001 11 100 ... ..... ..... @rd_pg_rn # SVE vector splice (predicated) SPLICE 00000101 .. 101 100 100 ... ..... ..... @rdn_pg_rm ### SVE Select Vectors Group # SVE select vector elements (predicated) SEL_zpzz 00000101 .. 1 ..... 11 .... ..... ..... @rd_pg4_rn_rm ### SVE Predicate Logical Operations Group # SVE predicate logical operations AND_pppp 00100101 0. 00 .... 01 .... 0 .... 0 .... @pd_pg_pn_pm_s BIC_pppp 00100101 0. 00 .... 01 .... 0 .... 1 .... @pd_pg_pn_pm_s EOR_pppp 00100101 0. 00 .... 01 .... 1 .... 0 .... @pd_pg_pn_pm_s SEL_pppp 00100101 0. 00 .... 01 .... 1 .... 1 .... @pd_pg_pn_pm_s ORR_pppp 00100101 1. 00 .... 01 .... 0 .... 0 .... @pd_pg_pn_pm_s ORN_pppp 00100101 1. 00 .... 01 .... 0 .... 1 .... @pd_pg_pn_pm_s NOR_pppp 00100101 1. 00 .... 01 .... 1 .... 0 .... @pd_pg_pn_pm_s NAND_pppp 00100101 1. 00 .... 01 .... 1 .... 1 .... @pd_pg_pn_pm_s ### SVE Predicate Misc Group # SVE predicate test PTEST 00100101 01 010000 11 pg:4 0 rn:4 0 0000 # SVE predicate initialize PTRUE 00100101 esz:2 01100 s:1 111000 pat:5 0 rd:4 # SVE initialize FFR SETFFR 00100101 0010 1100 1001 0000 0000 0000 # SVE zero predicate register PFALSE 00100101 0001 1000 1110 0100 0000 rd:4 # SVE predicate read from FFR (predicated) RDFFR_p 00100101 0 s:1 0110001111000 pg:4 0 rd:4 # SVE predicate read from FFR (unpredicated) RDFFR 00100101 0001 1001 1111 0000 0000 rd:4 # SVE FFR write from predicate (WRFFR) WRFFR 00100101 0010 1000 1001 000 rn:4 00000 # SVE predicate first active PFIRST 00100101 01 011 000 11000 00 .... 0 .... @pd_pn_e0 # SVE predicate next active PNEXT 00100101 .. 011 001 11000 10 .... 0 .... @pd_pn ### SVE Memory - 32-bit Gather and Unsized Contiguous Group # SVE load predicate register LDR_pri 10000101 10 ...... 000 ... ..... 0 .... @pd_rn_i9 # SVE load vector register LDR_zri 10000101 10 ...... 010 ... ..... ..... @rd_rn_i9