GcnInstrsFlat - CLRX/CLRX-mirror GitHub Wiki
GCN ISA FLAT instructions
These instructions allow to access to main memory, LDS and scratch buffer. FLAT instructions fetch address from 2 vector registers that hold 64-bit address. FLAT instructions present only in GCN 1.1 or later architecture.
List of fields for the FLAT encoding (GCN 1.1/1.2):
| Bits | Name | Description |
|---|---|---|
| 0-12 | OFFSET | Byte offset (GCN 1.4) |
| 13 | LDS | transfer DATA to LDS and memory (GCN 1.4) |
| 14-15 | SEG | Memory segment (instrunction type) (GCN 1.4) |
| 16 | GLC | Operation globally coherent |
| 17 | SLC | System level coherent |
| 18-24 | OPCODE | Operation code |
| 25-31 | ENCODING | Encoding type. Must be 0b110111 |
| 32-39 | VADDR | Vector address registers |
| 40-47 | VDATA | Vector data register |
| 48-54 | SADDR | Scalar SGPR offset (0x7f value disables it) (GCN 1.4) |
| 55 | TFE | Texture Fail Enable ??? (GCN 1.1/1.2) |
| 55 | NV | Non-Volatile (GCN 1.4) |
| 56-63 | VDST | Vector destination register |
List of fields for the FLAT encoding (GCN 1.4):
| Bits | Name | Description |
|---|---|---|
| 0-12 | OFFSET | Byte offset |
| 13 | LDS | transfer DATA to LDS and memory |
| 14-15 | SEG | Memory segment (instrunction type) |
| 16 | GLC | Operation globally coherent |
| 17 | SLC | System level coherent |
| 18-24 | OPCODE | Operation code |
| 25-31 | ENCODING | Encoding type. Must be 0b110111 |
| 32-39 | VADDR | Vector address registers |
| 40-47 | VDATA | Vector data register |
| 48-54 | SADDR | Scalar SGPR offset (for GLOBAL/SCRATCH) (0x7f value disables it) |
| 55 | NV | Non-Volatile |
| 56-63 | VDST | Vector destination register |
Instruction types:
| SEG | Prefix | Description |
|---|---|---|
| 0 | FLAT | FLAT instruction (global, private or scratch memory) |
| 1 | SCRATCH | SCRATCH instruction (only for scratch memory access) |
| 2 | GLOBAL | GLOBAL instruction (only for global memory access) |
Instruction syntax: INSTRUCTION VDST, VADDR(2) [MODIFIERS]
Instruction syntax: INSTRUCTION VADDR(2), VDATA [MODIFIERS]__
GLOBAL instruction syntax: INSTRUCTION VDST, VADDR(2), SADDR(2)|OFF [MODIFIERS]
GLOBAL instruction syntax: INSTRUCTION VADDR(1:2), VDATA, SADDR(2)|OFF [MODIFIERS]
SCRATCH instruction syntax: INSTRUCTION VDST, VADDR(2), SADDR|OFF [MODIFIERS]
SCRATCH instruction syntax: INSTRUCTION VADDR, VDATA, SADDR|OFF [MODIFIERS]
For atomic operations assembler accepts following instruction syntax:
INSTRUCTION VDST(X), VADDR(X), VDATA(X)
and if instruction does not has GLC flag:
INSTRUCTION VADDR(X), VDATA(X)
Modifiers can be supplied in any order. Modifiers list: SLC, GLC, TFE, LDS, NV, INST_OFFSET:OFFSET. The TFE flag requires additional the VDATA register. LDS, NV and OFFSET are available only in GCN 1.4 architecture.
FLAT instruction can complete out of order with each other. This can be caused by different resources from/to that instruction can load/store. FLAT instruction increase VMCNT if access to main memory, or LKGMCNT if accesses to LDS.
OFFSET (INST_OFFSET modifier) can be 13-bit signed for GLOBAL_* and SCRATCH_* instructions or 12-bit unsigned for FLAT_* instructions.
For GLOBAL instruction VADDR has 2 registers if SADDR is OFF, otherwise VADDR holds 32-bit offset in single VGPR register.
Instructions by opcode
List of the FLAT instructions by opcode (GCN 1.1/1.2):
| Opcode | Mnemonic (GCN1.1) | Mnemonic (GCN1.2) |
|---|---|---|
| 8 (0x8) | FLAT_LOAD_UBYTE | -- |
| 9 (0x9) | FLAT_LOAD_SBYTE | -- |
| 10 (0xa) | FLAT_LOAD_USHORT | -- |
| 11 (0xb) | FLAT_LOAD_SSHORT | -- |
| 12 (0xc) | FLAT_LOAD_DWORD | -- |
| 13 (0xd) | FLAT_LOAD_DWORDX2 | -- |
| 14 (0xe) | FLAT_LOAD_DWORDX4 | -- |
| 15 (0xf) | FLAT_LOAD_DWORDX3 | -- |
| 16 (0x10) | -- | FLAT_LOAD_UBYTE |
| 17 (0x11) | -- | FLAT_LOAD_SBYTE |
| 18 (0x12) | -- | FLAT_LOAD_USHORT |
| 19 (0x13) | -- | FLAT_LOAD_SSHORT |
| 20 (0x14) | -- | FLAT_LOAD_DWORD |
| 21 (0x15) | -- | FLAT_LOAD_DWORDX2 |
| 22 (0x16) | -- | FLAT_LOAD_DWORDX3 |
| 23 (0x17) | -- | FLAT_LOAD_DWORDX4 |
| 24 (0x18) | FLAT_STORE_BYTE | FLAT_STORE_BYTE |
| 26 (0x1a) | FLAT_STORE_SHORT | FLAT_STORE_SHORT |
| 28 (0x1c) | FLAT_STORE_DWORD | FLAT_STORE_DWORD |
| 29 (0x1d) | FLAT_STORE_DWORDX2 | FLAT_STORE_DWORDX2 |
| 30 (0x1e) | FLAT_STORE_DWORDX4 | FLAT_STORE_DWORDX3 |
| 31 (0x1f) | FLAT_STORE_DWORDX3 | FLAT_STORE_DWORDX4 |
| 48 (0x30) | FLAT_ATOMIC_SWAP | -- |
| 49 (0x31) | FLAT_ATOMIC_CMPSWAP | -- |
| 50 (0x32) | FLAT_ATOMIC_ADD | -- |
| 51 (0x33) | FLAT_ATOMIC_SUB | -- |
| 53 (0x35) | FLAT_ATOMIC_SMIN | -- |
| 54 (0x36) | FLAT_ATOMIC_UMIN | -- |
| 55 (0x37) | FLAT_ATOMIC_SMAX | -- |
| 56 (0x38) | FLAT_ATOMIC_UMAX | -- |
| 57 (0x39) | FLAT_ATOMIC_AND | -- |
| 58 (0x3a) | FLAT_ATOMIC_OR | -- |
| 59 (0x3b) | FLAT_ATOMIC_XOR | -- |
| 60 (0x3c) | FLAT_ATOMIC_INC | -- |
| 61 (0x3d) | FLAT_ATOMIC_DEC | -- |
| 62 (0x3e) | FLAT_ATOMIC_FCMPSWAP | -- |
| 63 (0x3f) | FLAT_ATOMIC_FMIN | -- |
| 64 (0x40) | FLAT_ATOMIC_FMAX | FLAT_ATOMIC_SWAP |
| 65 (0x41) | -- | FLAT_ATOMIC_CMPSWAP |
| 66 (0x42) | -- | FLAT_ATOMIC_ADD |
| 67 (0x43) | -- | FLAT_ATOMIC_SUB |
| 68 (0x44) | -- | FLAT_ATOMIC_SMIN |
| 69 (0x45) | -- | FLAT_ATOMIC_UMIN |
| 70 (0x46) | -- | FLAT_ATOMIC_SMAX |
| 71 (0x47) | -- | FLAT_ATOMIC_UMAX |
| 72 (0x48) | -- | FLAT_ATOMIC_AND |
| 73 (0x49) | -- | FLAT_ATOMIC_OR |
| 74 (0x4a) | -- | FLAT_ATOMIC_XOR |
| 75 (0x4b) | -- | FLAT_ATOMIC_INC |
| 76 (0x4c) | -- | FLAT_ATOMIC_DEC |
| 80 (0x50) | FLAT_ATOMIC_SWAP_X2 | -- |
| 81 (0x51) | FLAT_ATOMIC_CMPSWAP_X2 | -- |
| 82 (0x52) | FLAT_ATOMIC_ADD_X2 | -- |
| 83 (0x53) | FLAT_ATOMIC_SUB_X2 | -- |
| 85 (0x55) | FLAT_ATOMIC_SMIN_X2 | -- |
| 86 (0x56) | FLAT_ATOMIC_UMIN_X2 | -- |
| 87 (0x57) | FLAT_ATOMIC_SMAX_X2 | -- |
| 88 (0x58) | FLAT_ATOMIC_UMAX_X2 | -- |
| 89 (0x59) | FLAT_ATOMIC_AND_X2 | -- |
| 90 (0x5a) | FLAT_ATOMIC_OR_X2 | -- |
| 91 (0x5b) | FLAT_ATOMIC_XOR_X2 | -- |
| 92 (0x5c) | FLAT_ATOMIC_INC_X2 | -- |
| 93 (0x5d) | FLAT_ATOMIC_DEC_X2 | -- |
| 94 (0x5e) | FLAT_ATOMIC_FCMPSWAP_X2 | -- |
| 95 (0x5f) | FLAT_ATOMIC_FMIN_X2 | -- |
| 96 (0x60) | FLAT_ATOMIC_FMAX_X2 | FLAT_ATOMIC_SWAP_X2 |
| 97 (0x61) | -- | FLAT_ATOMIC_CMPSWAP_X2 |
| 98 (0x62) | -- | FLAT_ATOMIC_ADD_X2 |
| 99 (0x63) | -- | FLAT_ATOMIC_SUB_X2 |
| 100 (0x64) | -- | FLAT_ATOMIC_SMIN_X2 |
| 101 (0x65) | -- | FLAT_ATOMIC_UMIN_X2 |
| 102 (0x66) | -- | FLAT_ATOMIC_SMAX_X2 |
| 103 (0x67) | -- | FLAT_ATOMIC_UMAX_X2 |
| 104 (0x68) | -- | FLAT_ATOMIC_AND_X2 |
| 105 (0x69) | -- | FLAT_ATOMIC_OR_X2 |
| 106 (0x6a) | -- | FLAT_ATOMIC_XOR_X2 |
| 107 (0x6b) | -- | FLAT_ATOMIC_INC_X2 |
| 108 (0x6c) | -- | FLAT_ATOMIC_DEC_X2 |
List of the FLAT/GLOBAL/SCRATCH instructions by opcode (GCN 1.4):
| Opcode | FLAT | GLOBAL | SCRATCH | Mnemonic |
|---|---|---|---|---|
| 16 (0x10) | ✓ | ✓ | ✓ | *_LOAD_UBYTE |
| 17 (0x11) | ✓ | ✓ | ✓ | *_LOAD_SBYTE |
| 18 (0x12) | ✓ | ✓ | ✓ | *_LOAD_USHORT |
| 19 (0x13) | ✓ | ✓ | ✓ | *_LOAD_SSHORT |
| 20 (0x14) | ✓ | ✓ | ✓ | *_LOAD_DWORD |
| 21 (0x15) | ✓ | ✓ | ✓ | *_LOAD_DWORDX2 |
| 22 (0x16) | ✓ | ✓ | ✓ | *_LOAD_DWORDX3 |
| 23 (0x17) | ✓ | ✓ | ✓ | *_LOAD_DWORDX4 |
| 24 (0x18) | ✓ | ✓ | ✓ | *_STORE_BYTE |
| 25 (0x19) | ✓ | ✓ | ✓ | *_STORE_BYTE_D16_HI |
| 26 (0x1a) | ✓ | ✓ | ✓ | *_STORE_SHORT |
| 27 (0x1b) | ✓ | ✓ | ✓ | *_STORE_SHORT_D16_HI |
| 28 (0x1c) | ✓ | ✓ | ✓ | *_STORE_DWORD |
| 29 (0x1d) | ✓ | ✓ | ✓ | *_STORE_DWORDX2 |
| 30 (0x1e) | ✓ | ✓ | ✓ | *_STORE_DWORDX3 |
| 31 (0x1f) | ✓ | ✓ | ✓ | *_STORE_DWORDX4 |
| 32 (0x20) | ✓ | ✓ | ✓ | *_LOAD_UBYTE_D16 |
| 33 (0x21) | ✓ | ✓ | ✓ | *_LOAD_UBYTE_D16_HI |
| 34 (0x22) | ✓ | ✓ | ✓ | *_LOAD_SBYTE_D16 |
| 35 (0x23) | ✓ | ✓ | ✓ | *_LOAD_SBYTE_D16_HI |
| 36 (0x24) | ✓ | ✓ | ✓ | *_LOAD_SHORT_D16 |
| 37 (0x25) | ✓ | ✓ | ✓ | *_LOAD_SHORT_D16_HI |
| 64 (0x40) | ✓ | ✓ | *_ATOMIC_SWAP | |
| 65 (0x41) | ✓ | ✓ | *_ATOMIC_CMPSWAP | |
| 66 (0x42) | ✓ | ✓ | *_ATOMIC_ADD | |
| 67 (0x43) | ✓ | ✓ | *_ATOMIC_SUB | |
| 68 (0x44) | ✓ | ✓ | *_ATOMIC_SMIN | |
| 69 (0x45) | ✓ | ✓ | *_ATOMIC_UMIN | |
| 70 (0x46) | ✓ | ✓ | *_ATOMIC_SMAX | |
| 71 (0x47) | ✓ | ✓ | *_ATOMIC_UMAX | |
| 72 (0x48) | ✓ | ✓ | *_ATOMIC_AND | |
| 73 (0x49) | ✓ | ✓ | *_ATOMIC_OR | |
| 74 (0x4a) | ✓ | ✓ | *_ATOMIC_XOR | |
| 75 (0x4b) | ✓ | ✓ | *_ATOMIC_INC | |
| 76 (0x4c) | ✓ | ✓ | *_ATOMIC_DEC | |
| 96 (0x60) | ✓ | ✓ | *_ATOMIC_SWAP_X2 | |
| 97 (0x61) | ✓ | ✓ | *_ATOMIC_CMPSWAP_X2 | |
| 98 (0x62) | ✓ | ✓ | *_ATOMIC_ADD_X2 | |
| 99 (0x63) | ✓ | ✓ | *_ATOMIC_SUB_X2 | |
| 100 (0x64) | ✓ | ✓ | *_ATOMIC_SMIN_X2 | |
| 101 (0x65) | ✓ | ✓ | *_ATOMIC_UMIN_X2 | |
| 102 (0x66) | ✓ | ✓ | *_ATOMIC_SMAX_X2 | |
| 103 (0x67) | ✓ | ✓ | *_ATOMIC_UMAX_X2 | |
| 104 (0x68) | ✓ | ✓ | *_ATOMIC_AND_X2 | |
| 105 (0x69) | ✓ | ✓ | *_ATOMIC_OR_X2 | |
| 106 (0x6a) | ✓ | ✓ | *_ATOMIC_XOR_X2 | |
| 107 (0x6b) | ✓ | ✓ | *_ATOMIC_INC_X2 | |
| 108 (0x6c) | ✓ | ✓ | *_ATOMIC_DEC_X2 |
The '*' means prefix of instruction (FLAT, GLOBAL or SCRATCH).
Instruction set
Alphabetically sorted instruction list:
FLAT_ATOMIC_ADD
Opcode: 50 (0x32) for GCN 1.1; 66 (0x42) for GCN 1.2/1.4
Syntax: FLAT_ATOMIC_ADD VDST, VADDR(2), VDATA
Description: Add VDATA to value of memory address, and store result to this address.
If GLC flag is set then return previous value from this address to VDST,
otherwise keep VDST value. Operation is atomic.
Operation:
UINT32* VM = (UINT32*)(VADDR + INST_OFFSET)
UINT32 P = *VM; *VM = *VM + VDATA; VDST = (GLC) ? P : VDST // atomic
FLAT_ATOMIC_ADD_X2
Opcode: 82 (0x52) for GCN 1.1; 98 (0x62) for GCN 1.2/1.4
Syntax: FLAT_ATOMIC_ADD_X2 VDST(2), VADDR(2), VDATA(2)
Description: Add 64-bit VDATA to 64-bit value of memory address, and store result
to this address. If GLC flag is set then return previous value from address to VDST,
otherwise keep VDST value. Operation is atomic.
Operation:
UINT64* VM = (UINT64*)(VADDR + INST_OFFSET)
UINT64 P = *VM; *VM = *VM + VDATA; VDST = (GLC) ? P : VDST // atomic
FLAT_ATOMIC_AND
Opcode: 57 (0x39) for GCN 1.1; 72 (0x48) for GCN 1.2/1.4
Syntax: FLAT_ATOMIC_AND VDST, VADDR(2), VDATA
Description: Do bitwise AND on VDATA and value of memory address,
and store result to this address. If GLC flag is set then return previous value
from this address to VDST, otherwise keep VDST value. Operation is atomic.
Operation:
UINT32* VM = (UINT32*)(VADDR + INST_OFFSET)
UINT32 P = *VM; *VM = *VM & VDATA; VDST = (GLC) ? P : VDST // atomic
FLAT_ATOMIC_AND_X2
Opcode: 89 (0x59) for GCN 1.1; 104 (0x68) for GCN 1.2/1.4
Syntax: FLAT_ATOMIC_AND_X2 VDST(2), VADDR(2), VDATA(2)
Description: Do 64-bit bitwise AND on VDATA and value of memory address,
and store result to this address. If GLC flag is set then return previous value
from this address to VDST, otherwise keep VDST value. Operation is atomic.
Operation:
UINT64* VM = (UINT64*)(VADDR + INST_OFFSET)
UINT64 P = *VM; *VM = *VM & VDATA; VDST = (GLC) ? P : VDST // atomic
FLAT_ATOMIC_CMPSWAP
Opcode: 49 (0x31) for GCN 1.1; 65 (0x41) for GCN 1.2/1.4
Syntax: FLAT_ATOMIC_CMPSWAP VDST, VADDR(2), VDATA(2)
Description: Store lower VDATA dword into memory address if previous value
from that address is equal VDATA>>32, otherwise keep old value from address.
If GLC flag is set then return previous value from address to VDST,
otherwise keep VDST value. Operation is atomic.
Operation:
UINT32* VM = (UINT32*)(VADDR + INST_OFFSET)
UINT32 P = *VM; *VM = *VM==(VDATA>>32) ? VDATA&0xffffffff : *VM // part of atomic
VDST = (GLC) ? P : VDST // last part of atomic
FLAT_ATOMIC_CMPSWAP_X2
Opcode: 81 (0x51) for GCN 1.1; 97 (0x61) for GCN 1.2/1.4
Syntax: FLAT_ATOMIC_CMPSWAP_X2 VDST(2), VADDR(2), VDATA(4)
Description: Store lower VDATA 64-bit word into memory address if previous value
from address is equal VDATA>>64, otherwise keep old value from VADDR.
If GLC flag is set then return previous value from VADDR to VDST,
otherwise keep VDST value. Operation is atomic.
Operation:
UINT64* VM = (UINT64*)(VADDR + INST_OFFSET)
UINT64 P = *VM; *VM = *VM==(VDATA[2:3]) ? VDATA[0:1] : *VM // part of atomic
VDST = (GLC) ? P : VDST // last part of atomic
FLAT_ATOMIC_DEC
Opcode: 61 (0x3d) for GCN 1.1; 76 (0x4c) for GCN 1.2/1.4
Syntax: FLAT_ATOMIC_DEC VDST, VADDR(2), VDATA
Description: Compare value from memory address and if less or equal than VDATA
and this value is not zero, then decrement value from memory address,
otherwise store VDATA to this address. If GLC flag is set then return previous value
from this address to VDST, otherwise keep VDST value. Operation is atomic.
Operation:
UINT32* VM = (UINT32*)(VADDR + INST_OFFSET)
UINT32 P = *VM; *VM = (*VM <= VDATA && *VM!=0) ? *VM-1 : VDATA // atomic
VDST = (GLC) ? P : VDST // atomic
FLAT_ATOMIC_DEC_X2
Opcode: 93 (0x5d) for GCN 1.1; 108 (0x6c) for GCN 1.2/1.4
Syntax: FLAT_ATOMIC_DEC_X2 VDST(2), VADDR(2), VDATA(2)
Description: Compare 64-bit value from memory address and if less or equal than VDATA
and this value is not zero, then decrement value from memory address,
otherwise store VDATA to this address. If GLC flag is set then return previous value
from this address to VDST, otherwise keep VDST value. Operation is atomic.
Operation:
UINT64* VM = (UINT64*)(VADDR + INST_OFFSET)
UINT64 P = *VM; *VM = (*VM <= VDATA && *VM!=0) ? *VM-1 : VDATA // atomic
VDST = (GLC) ? P : VDST // atomic
BUFFER_ATOMIC_FCMPSWAP
Opcode: 62 (0x3e) for GCN 1.1
Syntax: FLAT_ATOMIC_FCMPSWAP VDST, VADDR(1:2), VDATA(2)
Description: Store lower VDATA dword into memory address if previous single floating point
value from address is equal singe floating point value VDATA>>32,
otherwise keep old value from memory address.
If GLC flag is set then return previous value from this address to VDST,
otherwise keep VDST value. Operation is atomic.
Operation:
FLOAT* VM = (FLOAT*)(VADDR + INST_OFFSET)
FLOAT P = *VM; *VM = *VM==ASFLOAT(VDATA>>32) ? VDATA&0xffffffff : *VM // part of atomic
VDST[0] = (GLC) ? P : VDST // last part of atomic
FLAT_ATOMIC_FCMPSWAP_X2
Opcode: 94 (0x5e) for GCN 1.1
Syntax: FLAT_ATOMIC_FCMPSWAP_X2 VDATA(2), VADDR(2), SRSRC(4), SOFFSET
Description: Store lower VDATA 64-bit word into memory address if previous double
floating point value from address is equal singe floating point value VDATA>>32,
otherwise keep old value from memory address.
If GLC flag is set then return previous value from address to VDST, otherwise keep
VDST value. Operation is atomic.
Operation:
DOUBLE* VM = (DOUBLE*)(VADDR + INST_OFFSET)
DOUBLE P = *VM; *VM = *VM==ASDOUBLE(VDATA[2:3]) ? VDATA[0:1] : *VM // part of atomic
VDST = (GLC) ? P : VDST // last part of atomic
FLAT_ATOMIC_FMAX
Opcode: 64 (0x40) for GCN 1.1
Syntax: FLAT_ATOMIC_FMAX VDST, VADDR(2), VDATA
Description: Choose greatest single floating point value from VDATA and from
memory address, and store result to this address.
If GLC flag is set then return previous value from address to VDST, otherwise keep
VDST value. Operation is atomic.
Operation:
FLOAT* VM = (FLOAT*)(VADDR + INST_OFFSET)
UINT32 P = *VM; *VM = MAX(*VM, ASFLOAT(VDATA)); VDST = (GLC) ? P : VDST // atomic
BUFFER_ATOMIC_FMAX_X2
Opcode: 96 (0x60) for GCN 1.1
Syntax: FLAT_ATOMIC_FMAX_X2 VDST(2), VADDR(2), VDATA(2)
Description: Choose greatest double floating point value from VDATA and from
memory address, and store result to this address.
If GLC flag is set then return previous value from address to VDST,
otherwise keep VDST value. Operation is atomic.
Operation:
DOUBLE* VM = (DOUBLE*)(VADDR + INST_OFFSET)
UINT64 P = *VM; *VM = MAX(*VM, ASDOUBLE(VDATA)); VDST = (GLC) ? P : VDST // atomic
FLAT_ATOMIC_FMIN
Opcode: 63 (0x3f) for GCN 1.1
Syntax: FLAT_ATOMIC_FMIN VDST, VADDR(2), VDATA
Description: Choose smallest single floating point value from VDATA and from
memory address, and store result to this address.
If GLC flag is set then return previous value from address to VDST, otherwise keep
VDST value. Operation is atomic.
Operation:
FLOAT* VM = (FLOAT*)(VADDR + INST_OFFSET)
UINT32 P = *VM; *VM = MIN(*VM, ASFLOAT(VDATA)); VDST = (GLC) ? P : VDST // atomic
BUFFER_ATOMIC_FMIN_X2
Opcode: 95 (0x5f) for GCN 1.1
Syntax: FLAT_ATOMIC_FMIN_X2 VDST(2), VADDR(2), VDATA(2)
Description: Choose smallest double floating point value from VDATA and from
memory address, and store result to this address.
If GLC flag is set then return previous value from address to VDST,
otherwise keep VDST value. Operation is atomic.
Operation:
DOUBLE* VM = (DOUBLE*)(VADDR + INST_OFFSET)
UINT64 P = *VM; *VM = MIN(*VM, ASDOUBLE(VDATA)); VDST = (GLC) ? P : VDST // atomic
FLAT_ATOMIC_INC
Opcode: 60 (0x3c) for GCN 1.1; 75 (0x4b) for GCN 1.2/1.4
Syntax: FLT_ATOMIC_INC VDST, VADDR(2), VDATA
Description: Compare value from memory address and if less than VDATA,
then increment value from address, otherwise store zero to address.
If GLC flag is set then return previous value from this address to VDST,
otherwise keep VDST value. Operation is atomic.
Operation:
UINT32* VM = (UINT32*)(VADDR + INST_OFFSET)
UINT32 P = *VM; *VM = (*VM < VDATA) ? *VM+1 : 0; VDST = (GLC) ? P : VDST // atomic
FLAT_ATOMIC_INC_X2
Opcode: 92 (0x5c) for GCN 1.1; 107 (0x9b) for GCN 1.2/1.4
Syntax: FLAT_ATOMIC_INC_X2 VDST(2), VADDR(2), VADDR(2)
Description: Compare 64-bit value from memory address and if less than VDATA,
then increment value from address, otherwise store zero to address.
If GLC flag is set then return previous value from this address to VDST,
otherwise keep VDST value. Operation is atomic.
Operation:
UINT64* VM = (UINT64*)(VADDR + INST_OFFSET)
UINT64 P = *VM; *VM = (*VM < VDATA) ? *VM+1 : 0; VDST = (GLC) ? P : VDST // atomic
FLAT_ATOMIC_OR
Opcode: 58 (0x3a) for GCN 1.1; 73 (0x49) for GCN 1.2/1.4
Syntax: FLAT_ATOMIC_OR VDST, VADDR(2), VDATA
Description: Do bitwise OR on VDATA and value of memory address,
and store result to this address. If GLC flag is set then return previous value
from this address to VDST, otherwise keep VDST value. Operation is atomic.
Operation:
UINT32* VM = (UINT32*)(VADDR + INST_OFFSET)
UINT32 P = *VM; *VM = *VM | VDATA; VDST = (GLC) ? P : VDST // atomic
FLAT_ATOMIC_OR_X2
Opcode: 90 (0x5a) for GCN 1.1; 105 (0x69) for GCN 1.2/1.4
Syntax: FLAT_ATOMIC_OR_X2 VDST(2), VADDR(2), VDATA(2)
Description: Do 64-bit bitwise OR on VDATA and value of memory address,
and store result to this address. If GLC flag is set then return previous value
from this address to VDST, otherwise keep VDST value. Operation is atomic.
Operation:
UINT64* VM = (UINT64*)(VADDR + INST_OFFSET)
UINT64 P = *VM; *VM = *VM | VDATA; VDST = (GLC) ? P : VDST // atomic
FLAT_ATOMIC_SMAX
Opcode: 55 (0x37) for GCN 1.1; 70 (0x46) for GCN 1.2/1.4
Syntax: FLAT_ATOMIC_SMAX VDST, VADDR(2), VDATA
Description: Choose greatest signed 32-bit value from VDATA and from memory address,
and store result to this address.
If GLC flag is set then return previous value from this address to VDST, otherwise keep
VDST value. Operation is atomic.
Operation:
INT32* VM = (INT32*)(VADDR + INST_OFFSET)
UINT32 P = *VM; *VM = MAX(*VM, (INT32)VDATA); VDST = (GLC) ? P : VDST // atomic
FLAT_ATOMIC_SMAX_X2
Opcode: 87 (0x57) for GCN 1.1; 102 (0x66) for GCN 1.2/1.4
Syntax: FLAT_ATOMIC_SMAX_X2 VDST(2), VADDR(2), VDATA(2)
Description: Choose greatest signed 64-bit value from VDATA and from memory address,
and store result to this address.
If GLC flag is set then return previous value from this address to VDST, otherwise keep
VDST value. Operation is atomic.
Operation:
INT64* VM = (INT64*)(VADDR + INST_OFFSET)
UINT64 P = *VM; *VM = MAX(*VM, (INT64)VDATA); VDST = (GLC) ? P : VDST // atomic
FLAT_ATOMIC_SMIN
Opcode: 53 (0x35) for GCN 1.1; 68 (0x44) for GCN 1.2/1.4
Syntax: FLAT_ATOMIC_SMIN VDST, VADDR(2), VDATA
Description: Choose smallest signed 32-bit value from VDATA and from memory address,
and store result to this address.
If GLC flag is set then return previous value from this address to VDST, otherwise keep
VDST value. Operation is atomic.
Operation:
INT32* VM = (INT32*)(VADDR + INST_OFFSET)
UINT32 P = *VM; *VM = MIN(*VM, (INT32)VDATA); VDST = (GLC) ? P : VDST // atomic
FLAT_ATOMIC_SMIN_X2
Opcode: 85 (0x55) for GCN 1.1; 100 (0x64) for GCN 1.2/1.4
Syntax: FLAT_ATOMIC_SMIN_X2 VDST(2), VADDR(2), VDATA(2)
Description: Choose smallest signed 64-bit value from VDATA and from memory address,
and store result to this address.
If GLC flag is set then return previous value from this address to VDST, otherwise keep
VDST value. Operation is atomic.
Operation:
INT64* VM = (INT64*)(VADDR + INST_OFFSET)
UINT64 P = *VM; *VM = MIN(*VM, (INT64)VDATA); VDST = (GLC) ? P : VDST // atomic
FLAT_ATOMIC_SUB
Opcode: 51 (0x33) for GCN 1.1; 67 (0x43) for GCN 1.2/1.4
Syntax: FLAT_ATOMIC_SUB VDST, VADDR(2), VDATA
Description: Subtract VDATA from value of memory address, and store result to this address.
If GLC flag is set then return previous value from this address to VDST,
otherwise keep VDST value. Operation is atomic.
Operation:
UINT32* VM = (UINT32*)(VADDR + INST_OFFSET)
UINT32 P = *VM; *VM = *VM - VDATA; VDST = (GLC) ? P : VDST // atomic
FLAT_ATOMIC_SUB_X2
Opcode: 83 (0x53) for GCN 1.1; 99 (0x63) for GCN 1.2/1.4
Syntax: FLAT_ATOMIC_SUB_X2 VDST(2), VADDR(2), VDATA(2)
Description: Subtract 64-bit VDATA from 64-bit value of memory address, and store result
to this address. If GLC flag is set then return previous value from address to VDST,
otherwise keep VDST value. Operation is atomic.
Operation:
UINT64* VM = (UINT64*)(VADDR + INST_OFFSET)
UINT64 P = *VM; *VM = *VM - VDATA; VDST = (GLC) ? P : VDST // atomic
FLAT_ATOMIC_SWAP
Opcode: 48 (0x30) for GCN 1.1; 64 (0x40) for GCN 1.2/1.4
Syntax: FLAT_ATOMIC_SWAP VDST, VADDR(2), VDATA
Description: Store VDATA dword into memory address. If GLC flag is set then
return previous value from memory address to VDST, otherwise keep old value from VDST.
Operation is atomic.
Operation:
UINT32* VM = (UINT32*)(VADDR + INST_OFFSET)
UINT32 P = *VM; *VM = VDATA; VDST = (GLC) ? P : VDST // atomic
FLAT_ATOMIC_SWAP_X2
Opcode: 80 (0x50) for GCN 1.1; 96 (0x60) for GCN 1.2/1.4
Syntax: FLAT_ATOMIC_SWAP_X2 VDST(2), VADDR(2), VDATA(2)
Description: Store VDATA 64-bit word into memory address. If GLC flag is set then
return previous value from memory address to VDST, otherwise keep old value from VDST.
Operation is atomic.
Operation:
UINT64* VM = (UINT64*)(VADDR + INST_OFFSET)
UINT64 P = *VM; *VM = VDATA; VDST = (GLC) ? P : VDST // atomic
FLAT_ATOMIC_UMAX
Opcode: 56 (0x38) for GCN 1.1; 71 (0x47) for GCN 1.2/1.4
Syntax: FLAT_ATOMIC_UMAX VDST, VADDR(2), VDATA
Description: Choose greatest unsigned 32-bit value from VDATA and from memory address,
and store result to this address.
If GLC flag is set then return previous value from this address to VDST, otherwise keep
VDST value. Operation is atomic.
Operation:
UINT32* VM = (UINT32*)(VADDR + INST_OFFSET)
UINT32 P = *VM; *VM = MAX(*VM, (UINT32)VDATA); VDST = (GLC) ? P : VDST // atomic
FLAT_ATOMIC_UMAX_X2
Opcode: 88 (0x58) for GCN 1.1; 103 (0x67) for GCN 1.2/1.4
Syntax: FLAT_ATOMIC_UMAX_X2 VDST(2), VADDR(2), VDATA(2)
Description: Choose greatest unsigned 64-bit value from VDATA and from memory address,
and store result to this address.
If GLC flag is set then return previous value from this address to VDST, otherwise keep
VDST value. Operation is atomic.
Operation:
UINT64* VM = (UINT64*)(VADDR + INST_OFFSET)
UINT64 P = *VM; *VM = MAX(*VM, (UINT64)VDATA); VDST = (GLC) ? P : VDST // atomic
FLAT_ATOMIC_UMIN
Opcode: 54 (0x36) for GCN 1.1; 69 (0x45) for GCN 1.2/1.4
Syntax: FLAT_ATOMIC_UMIN VDST, VADDR(2), VDATA
Description: Choose smallest unsigned 32-bit value from VDATA and from memory address,
and store result to this address.
If GLC flag is set then return previous value from this address to VDST, otherwise keep
VDST value. Operation is atomic.
Operation:
UINT32* VM = (UINT32*)(VADDR + INST_OFFSET)
UINT32 P = *VM; *VM = MIN(*VM, (UINT32)VDATA); VDST = (GLC) ? P : VDST // atomic
FLAT_ATOMIC_UMIN_X2
Opcode: 86 (0x56) for GCN 1.1; 101 (0x65) for GCN 1.2/1.4
Syntax: FLAT_ATOMIC_UMIN_X2 VDST(2), VADDR(2), VDATA(2)
Description: Choose smallest unsigned 64-bit value from VDATA and from memory address,
and store result to this address.
If GLC flag is set then return previous value from this address to VDST, otherwise keep
VDST value. Operation is atomic.
Operation:
UINT64* VM = (UINT64*)(VADDR + INST_OFFSET)
UINT64 P = *VM; *VM = MIN(*VM, (UINT64)VDATA); VDST = (GLC) ? P : VDST // atomic
FLAT_ATOMIC_XOR
Opcode: 59 (0x3b) for GCN 1.1; 74 (0x4a) for GCN 1.2/1.4
Syntax: FLAT_ATOMIC_XOR VDST, VADDR(2), VDATA
Description: Do bitwise XOR on VDATA and value of memory address,
and store result to this address. If GLC flag is set then return previous value
from this address to VDST, otherwise keep VDST value. Operation is atomic.
Operation:
UINT32* VM = (UINT32*)(VADDR + INST_OFFSET)
UINT32 P = *VM; *VM = *VM ^ VDATA; VDST = (GLC) ? P : VDST // atomic
FLAT_ATOMIC_XOR_X2
Opcode: 91 (0x5b) for GCN 1.1; 106 (0x6a) for GCN 1.2/1.4
Syntax: FLAT_ATOMIC_XOR_X2 VDST(2), VADDR(2), VDATA(2)
Description: Do 64-bit bitwise XOR on VDATA and value of memory address,
and store result to this address. If GLC flag is set then return previous value
from this address to VDST, otherwise keep VDST value. Operation is atomic.
Operation:
UINT64* VM = (UINT64*)(VADDR + INST_OFFSET)
UINT64 P = *VM; *VM = *VM ^ VDATA; VDST = (GLC) ? P : VDST // atomic
FLAT_LOAD_DWORD
Opcode: 12 (0xc) for GCN 1.1; 20 (0x14) for GCN 1.2/1.4
Syntax: FLAT_LOAD_DWORD VDST, VADDR(2)
Description Load dword to VDST from memory address.
Operation:
VDST = *(UINT32*)(VADDR + INST_OFFSET)
FLAT_LOAD_DWORDX2
Opcode: 13 (0xd) for GCN 1.1; 21 (0x15) for GCN 1.2/1.4
Syntax: FLAT_LOAD_DWORDX2 VDST(, VADDR(2)
Description Load two dwords to VDST from memory address.
Operation:
VDST = *(UINT64*)(VADDR + INST_OFFSET)
FLAT_LOAD_DWORDX3
Opcode: 15 (0xf) for GCN 1.1; 22 (0x16) for GCN 1.2/1.4
Syntax: FLAT_LOAD_DWORDX3 VDST(3), VADDR(2)
Description Load three dwords to VDST from memory address.
Operation:
BYTE* VM = (VADDR + INST_OFFSET)
VDST[0] = *(UINT32*)VM
VDST[1] = *(UINT32*)(VM+4)
VDST[2] = *(UINT32*)(VM+8)
FLAT_LOAD_DWORDX4
Opcode: 13 (0xe) for GCN 1.1; 23 (0x17) for GCN 1.2/1.4
Syntax: FLAT_LOAD_DWORDX4 VDST(4), VADDR(2)
Description Load four dwords to VDST from memory address.
Operation:
BYTE* VM = (VADDR + INST_OFFSET)
VDST[0] = *(UINT32*)VM
VDST[1] = *(UINT32*)(VM+4)
VDST[2] = *(UINT32*)(VM+8)
VDST[3] = *(UINT32*)(VM+12)
FLAT_LOAD_SBYTE
Opcode: 9 (0x9) for GCN 1.1; 17 (0x11) for GCN 1.2/1.4
Syntax: FLAT_LOAD_SBYTE VDST, VADDR(2)
Description: Load byte to VDST from memory address with sign extending.
Operation:
VDST = *(INT8*)(VADDR + INST_OFFSET)
FLAT_LOAD_SBYTE_D16
Opcode: 34 (0x22) for GCN 1.4
Syntax: FLAT_LOAD_SBYTE_D16 VDST, VADDR(2)
Description: Load byte to lower 16-bit part of VDST from
memory address with sign extending.
Operation:
BYTE* VM = (VADDR + INST_OFFSET)
VDST = ((UINT16)*(INT8*)VM) | (VDST&0xffff0000)
FLAT_LOAD_SBYTE_D16_HI
Opcode: 35 (0x23) for GCN 1.4
Syntax: FLAT_LOAD_SBYTE_D16_HI VDST, VADDR(2)
Description: Load byte to higher 16-bit part of VDST from
memory address with sign extending.
Operation:
BYTE* VM = (VADDR + INST_OFFSET)
VDST = (((UINT32)*(INT8*)VM)<<16) | (VDST&0xffff)
FLAT_LOAD_SHORT_D16
Opcode: 36 (0x24) for GCN 1.4
Syntax: FLAT_LOAD_SHORT_D16 VDST, VADDR(2)
Description: Load 16-bit word to lower 16-bit part of VDST from memory address.
Operation:
BYTE* VM = (VADDR + INST_OFFSET)
VDST = *(UINT16*)VM | (VDST & 0xffff0000)
FLAT_LOAD_SHORT_D16_HI
Opcode: 36 (0x24) for GCN 1.4
Syntax: FLAT_LOAD_SHORT_D16_HI VDST, VADDR(2)
Description: Load 16-bit word to lower 16-bit part of VDST from memory address.
Operation:
BYTE* VM = (VADDR + INST_OFFSET)
VDST = (((UINT32)*(UINT16*)VM)<<16) | (VDST & 0xffff)
FLAT_LOAD_SSHORT
Opcode: 11 (0xb) for GCN 1.1; 19 (0x13) for GCN 1.2/1.4
Syntax: FLAT_LOAD_SSHORT VDST, VADDR(2)
Description: Load 16-bit word to VDST from memory address with sign extending.
Operation:
VDST = *(INT16*)(VADDR + INST_OFFSET)
FLAT_LOAD_UBYTE
Opcode: 8 (0x8) for GCN 1.1; 16 (0x10) for GCN 1.2/1.4
Syntax: FLAT_LOAD_UBYTE VDST, VADDR(2)
Description: Load byte to VDST from memory address with zero extending.
Operation:
VDST = *(UINT8*)(VADDR + INST_OFFSET)
FLAT_LOAD_UBYTE_D16
Opcode: 32 (0x20) for GCN 1.4
Syntax: FLAT_LOAD_UBYTE_D16 VDST, VADDR(2)
Description: Load byte to lower 16-bit part of VDST from
memory address with zero extending.
Operation:
BYTE* VM = (VADDR + INST_OFFSET)
VDST = ((UINT16)*(UINT8*)VM) | (VDST&0xffff0000)
FLAT_LOAD_UBYTE_D16_HI
Opcode: 33 (0x21) for GCN 1.4
Syntax: FLAT_LOAD_UBYTE_D16_HI VDST, VADDR(2)
Description: Load byte to higher 16-bit part of VDST from
memory address with zero extending.
Operation:
BYTE* VM = (VADDR + INST_OFFSET)
VDST = (((UINT32)*(UINT8*)VM)<<16) | (VDST&0xffff)
FLAT_LOAD_USHORT
Opcode: 10 (0xa) for GCN 1.1; 18 (0x12) for GCN 1.2/1.4
Syntax: FLAT_LOAD_USHORT VDST, VADDR(1:2)
Description: Load 16-bit word to VDST from memory address with zero extending.
Operation:
VDST = *(UINT16*)(VADDR + INST_OFFSET)
FLAT_STORE_BYTE
Opcode: 24 (0x18)
Syntax: FLAT_STORE_BYTE VADDR(2), VDATA
Description: Store byte from VDATA to memory address.
Operation:
*(UINT8*)(VADDR + INST_OFFSET) = VDATA&0xff
FLAT_STORE_BYTE_D16_HI
Opcode: 25 (0x19) for GCN 1.4
Syntax: FLAT_STORE_BYTE_D16_HI VADDR(2), VDATA
Description: Store byte from 16-23 bits of VDATA to memory address.
Operation:
*(UINT8*)(VADDR + INST_OFFSET) = (VDATA>>16)&0xff
FLAT_STORE_DWORD
Opcode: 28 (0x1c)
Syntax: FLAT_STORE_DWORD VADDR(2), VDATA
Description: Store dword from VDATA to memory address.
Operation:
*(UINT32*)(VADDR + INST_OFFSET) = VDATA
FLAT_STORE_DWORDX2
Opcode: 29 (0x1d)
Syntax: FLAT_STORE_DWORDX2 VADDR(2), VDATA(2)
Description: Store two dwords from VDATA to memory address.
Operation:
*(UINT64*)(VADDR + INST_OFFSET) = VDATA
FLAT_STORE_DWORDX3
Opcode: 31 (0x1f) for GCN 1.1; 30 (0x1e) for GCN 1.2/1.4
Syntax: FLAT_STORE_DWORDX3 VADDR(2), VDATA(3)
Description: Store three dwords from VDATA to memory address.
Operation:
BYTE* VM = (VADDR + INST_OFFSET)
*(UINT32*)(VM) = VDATA[0]
*(UINT32*)(VM+4) = VDATA[1]
*(UINT32*)(VM+8) = VDATA[2]
FLAT_STORE_DWORDX4
Opcode: 30 (0x1e) for GCN 1.1; 31 (0x1d) for GCN 1.2/1.4
Syntax: FLAT_STORE_DWORDX4 VADDR(2), VDATA(4)
Description: Store four dwords from VDATA to memory address.
Operation:
*(UINT32*)(VM) = VDATA[0]
*(UINT32*)(VM+4) = VDATA[1]
*(UINT32*)(VM+8) = VDATA[2]
*(UINT32*)(VM+12) = VDATA[3]
FLAT_STORE_SHORT
Opcode: 26 (0x1a)
Syntax: FLAT_STORE_SHORT VADDR(2), VDATA
Description: Store 16-bit word from VDATA to memory address.
Operation:
*(UINT16*)(VADDR + INST_OFFSET) = VDATA&0xffff
FLAT_STORE_SHORT_D16_HI
Opcode: 27 (0x1b) for GCN 1.4
Syntax: FLAT_STORE_SHORT_D16_HI VADDR(2), VDATA
Description: Store 16-bit word from higher 16-bit part of VDATA to memory address.
Operation:
*(UINT16*)(VADDR + INST_OFFSET) = VDATA>>16
GLOBAL_ATOMIC_ADD
Opcode: 66 (0x42) for GCN 1.4
Syntax: GLOBAL_ATOMIC_ADD VDST, VADDR(1:2), VDATA, SADDR(2)|OFF
Description: Add VDATA to value of global address, and store result to this address.
If GLC flag is set then return previous value from this address to VDST,
otherwise keep VDST value. Operation is atomic.
Operation:
UINT32* VM = (UINT32*)(VADDR + SADDR + INST_OFFSET)
UINT32 P = *VM; *VM = *VM + VDATA; VDST = (GLC) ? P : VDST // atomic
GLOBAL_ATOMIC_ADD_X2
Opcode: 98 (0x62) for GCN 1.4
Syntax: GLOBAL_ATOMIC_ADD_X2 VDST(2), VADDR(1:2), VDATA(2), SADDR(2)|OFF
Description: Add 64-bit VDATA to 64-bit value of global address, and store result
to this address. If GLC flag is set then return previous value from address to VDST,
otherwise keep VDST value. Operation is atomic.
Operation:
UINT64* VM = (UINT64*)(VADDR + SADDR + INST_OFFSET)
UINT64 P = *VM; *VM = *VM + VDATA; VDST = (GLC) ? P : VDST // atomic
GLOBAL_ATOMIC_AND
Opcode: 72 (0x48) for GCN 1.4
Syntax: GLOBAL_ATOMIC_AND VDST, VADDR(1:2), VDATA, SADDR(2)|OFF
Description: Do bitwise AND on VDATA and value of global address,
and store result to this address. If GLC flag is set then return previous value
from this address to VDST, otherwise keep VDST value. Operation is atomic.
Operation:
UINT32* VM = (UINT32*)(VADDR + SADDR + INST_OFFSET)
UINT32 P = *VM; *VM = *VM & VDATA; VDST = (GLC) ? P : VDST // atomic
GLOBAL_ATOMIC_AND_X2
Opcode: 104 (0x68) for GCN 1.4
Syntax: GLOBAL_ATOMIC_AND_X2 VDST(2), VADDR(1:2), VDATA(2), SADDR(2)|OFF
Description: Do 64-bit bitwise AND on VDATA and value of global address,
and store result to this address. If GLC flag is set then return previous value
from this address to VDST, otherwise keep VDST value. Operation is atomic.
Operation:
UINT64* VM = (UINT64*)(VADDR + SADDR + INST_OFFSET)
UINT64 P = *VM; *VM = *VM & VDATA; VDST = (GLC) ? P : VDST // atomic
GLOBAL_ATOMIC_CMPSWAP
Opcode: 65 (0x41) for GCN 1.4
Syntax: GLOBAL_ATOMIC_CMPSWAP VDST, VADDR(1:2), VDATA(2), SADDR(2)|OFF
Description: Store lower VDATA dword into global address if previous value
from that address is equal VDATA>>32, otherwise keep old value from address.
If GLC flag is set then return previous value from address to VDST,
otherwise keep VDST value. Operation is atomic.
Operation:
UINT32* VM = (UINT32*)(VADDR + SADDR + INST_OFFSET)
UINT32 P = *VM; *VM = *VM==(VDATA>>32) ? VDATA&0xffffffff : *VM // part of atomic
VDST = (GLC) ? P : VDST // last part of atomic
GLOBAL_ATOMIC_CMPSWAP_X2
Opcode: 97 (0x61) for GCN 1.4
Syntax: GLOBAL_ATOMIC_CMPSWAP_X2 VDST(2), VADDR(1:2), VDATA(4), SADDR(2)|OFF
Description: Store lower VDATA 64-bit word into global address if previous value
from address is equal VDATA>>64, otherwise keep old value from VADDR.
If GLC flag is set then return previous value from VADDR to VDST,
otherwise keep VDST value. Operation is atomic.
Operation:
UINT64* VM = (UINT64*)(VADDR + SADDR + INST_OFFSET)
UINT64 P = *VM; *VM = *VM==(VDATA[2:3]) ? VDATA[0:1] : *VM // part of atomic
VDST = (GLC) ? P : VDST // last part of atomic
GLOBAL_ATOMIC_DEC
Opcode: 76 (0x4c) for GCN 1.4
Syntax: GLOBAL_ATOMIC_DEC VDST, VADDR(1:2), VDATA, SADDR(2)|OFF
Description: Compare value from global address and if less or equal than VDATA
and this value is not zero, then decrement value from global address,
otherwise store VDATA to this address. If GLC flag is set then return previous value
from this address to VDST, otherwise keep VDST value. Operation is atomic.
Operation:
UINT32* VM = (UINT32*)(VADDR + SADDR + INST_OFFSET)
UINT32 P = *VM; *VM = (*VM <= VDATA && *VM!=0) ? *VM-1 : VDATA // atomic
VDST = (GLC) ? P : VDST // atomic
GLOBAL_ATOMIC_DEC_X2
Opcode: 108 (0x6c) for GCN 1.4
Syntax: GLOBAL_ATOMIC_DEC_X2 VDST(2), VADDR(1:2), VDATA(2), SADDR(2)|OFF
Description: Compare 64-bit value from global address and if less or equal than VDATA
and this value is not zero, then decrement value from global address,
otherwise store VDATA to this address. If GLC flag is set then return previous value
from this address to VDST, otherwise keep VDST value. Operation is atomic.
Operation:
UINT64* VM = (UINT64*)(VADDR + SADDR + INST_OFFSET)
UINT64 P = *VM; *VM = (*VM <= VDATA && *VM!=0) ? *VM-1 : VDATA // atomic
VDST = (GLC) ? P : VDST // atomic
GLOBAL_ATOMIC_INC
Opcode: 75 (0x4b) for GCN 1.4
Syntax: FLT_ATOMIC_INC VDST, VADDR(1:2), VDATA, SADDR(2)|OFF
Description: Compare value from global address and if less than VDATA,
then increment value from address, otherwise store zero to address.
If GLC flag is set then return previous value from this address to VDST,
otherwise keep VDST value. Operation is atomic.
Operation:
UINT32* VM = (UINT32*)(VADDR + SADDR + INST_OFFSET)
UINT32 P = *VM; *VM = (*VM < VDATA) ? *VM+1 : 0; VDST = (GLC) ? P : VDST // atomic
GLOBAL_ATOMIC_INC_X2
Opcode: 107 (0x9b) for GCN 1.4
Syntax: GLOBAL_ATOMIC_INC_X2 VDST(2), VADDR(1:2), VADDR(1:2), SADDR(2)|OFF
Description: Compare 64-bit value from global address and if less than VDATA,
then increment value from address, otherwise store zero to address.
If GLC flag is set then return previous value from this address to VDST,
otherwise keep VDST value. Operation is atomic.
Operation:
UINT64* VM = (UINT64*)(VADDR + SADDR + INST_OFFSET)
UINT64 P = *VM; *VM = (*VM < VDATA) ? *VM+1 : 0; VDST = (GLC) ? P : VDST // atomic
GLOBAL_ATOMIC_OR
Opcode: 73 (0x49) for GCN 1.4
Syntax: GLOBAL_ATOMIC_OR VDST, VADDR(1:2), VDATA, SADDR(2)|OFF
Description: Do bitwise OR on VDATA and value of global address,
and store result to this address. If GLC flag is set then return previous value
from this address to VDST, otherwise keep VDST value. Operation is atomic.
Operation:
UINT32* VM = (UINT32*)(VADDR + SADDR + INST_OFFSET)
UINT32 P = *VM; *VM = *VM | VDATA; VDST = (GLC) ? P : VDST // atomic
GLOBAL_ATOMIC_OR_X2
Opcode: 105 (0x69) for GCN 1.4
Syntax: GLOBAL_ATOMIC_OR_X2 VDST(2), VADDR(1:2), VDATA(2), SADDR(2)|OFF
Description: Do 64-bit bitwise OR on VDATA and value of global address,
and store result to this address. If GLC flag is set then return previous value
from this address to VDST, otherwise keep VDST value. Operation is atomic.
Operation:
UINT64* VM = (UINT64*)(VADDR + SADDR + INST_OFFSET)
UINT64 P = *VM; *VM = *VM | VDATA; VDST = (GLC) ? P : VDST // atomic
GLOBAL_ATOMIC_SMAX
Opcode: 70 (0x46) for GCN 1.4
Syntax: GLOBAL_ATOMIC_SMAX VDST, VADDR(1:2), VDATA, SADDR(2)|OFF
Description: Choose greatest signed 32-bit value from VDATA and from global address,
and store result to this address.
If GLC flag is set then return previous value from this address to VDST, otherwise keep
VDST value. Operation is atomic.
Operation:
INT32* VM = (INT32*)(VADDR + SADDR + INST_OFFSET)
UINT32 P = *VM; *VM = MAX(*VM, (INT32)VDATA); VDST = (GLC) ? P : VDST // atomic
GLOBAL_ATOMIC_SMAX_X2
Opcode: 102 (0x66) for GCN 1.4
Syntax: GLOBAL_ATOMIC_SMAX_X2 VDST(2), VADDR(1:2), VDATA(2), SADDR(2)|OFF
Description: Choose greatest signed 64-bit value from VDATA and from global address,
and store result to this address.
If GLC flag is set then return previous value from this address to VDST, otherwise keep
VDST value. Operation is atomic.
Operation:
INT64* VM = (INT64*)(VADDR + SADDR + INST_OFFSET)
UINT64 P = *VM; *VM = MAX(*VM, (INT64)VDATA); VDST = (GLC) ? P : VDST // atomic
GLOBAL_ATOMIC_SMIN
Opcode: 68 (0x44) for GCN 1.4
Syntax: GLOBAL_ATOMIC_SMIN VDST, VADDR(1:2), VDATA, SADDR(2)|OFF
Description: Choose smallest signed 32-bit value from VDATA and from global address,
and store result to this address.
If GLC flag is set then return previous value from this address to VDST, otherwise keep
VDST value. Operation is atomic.
Operation:
INT32* VM = (INT32*)(VADDR + SADDR + INST_OFFSET)
UINT32 P = *VM; *VM = MIN(*VM, (INT32)VDATA); VDST = (GLC) ? P : VDST // atomic
GLOBAL_ATOMIC_SMIN_X2
Opcode: 100 (0x64) for GCN 1.4
Syntax: GLOBAL_ATOMIC_SMIN_X2 VDST(2), VADDR(1:2), VDATA(2), SADDR(2)|OFF
Description: Choose smallest signed 64-bit value from VDATA and from global address,
and store result to this address.
If GLC flag is set then return previous value from this address to VDST, otherwise keep
VDST value. Operation is atomic.
Operation:
INT64* VM = (INT64*)(VADDR + SADDR + INST_OFFSET)
UINT64 P = *VM; *VM = MIN(*VM, (INT64)VDATA); VDST = (GLC) ? P : VDST // atomic
GLOBAL_ATOMIC_SUB
Opcode: 67 (0x43) for GCN 1.4
Syntax: GLOBAL_ATOMIC_SUB VDST, VADDR(1:2), VDATA, SADDR(2)|OFF
Description: Subtract VDATA from value of global address, and store result to this address.
If GLC flag is set then return previous value from this address to VDST,
otherwise keep VDST value. Operation is atomic.
Operation:
UINT32* VM = (UINT32*)(VADDR + SADDR + INST_OFFSET)
UINT32 P = *VM; *VM = *VM - VDATA; VDST = (GLC) ? P : VDST // atomic
GLOBAL_ATOMIC_SUB_X2
Opcode: 99 (0x63) for GCN 1.4
Syntax: GLOBAL_ATOMIC_SUB_X2 VDST(2), VADDR(1:2), VDATA(2), SADDR(2)|OFF
Description: Subtract 64-bit VDATA from 64-bit value of global address, and store result
to this address. If GLC flag is set then return previous value from address to VDST,
otherwise keep VDST value. Operation is atomic.
Operation:
UINT64* VM = (UINT64*)(VADDR + SADDR + INST_OFFSET)
UINT64 P = *VM; *VM = *VM - VDATA; VDST = (GLC) ? P : VDST // atomic
GLOBAL_ATOMIC_SWAP
Opcode: 64 (0x40) for GCN 1.4
Syntax: GLOBAL_ATOMIC_SWAP VDST, VADDR(1:2), VDATA, SADDR(2)|OFF
Description: Store VDATA dword into global address. If GLC flag is set then
return previous value from global address to VDST, otherwise keep old value from VDST.
Operation is atomic.
Operation:
UINT32* VM = (UINT32*)(VADDR + SADDR + INST_OFFSET)
UINT32 P = *VM; *VM = VDATA; VDST = (GLC) ? P : VDST // atomic
GLOBAL_ATOMIC_SWAP_X2
Opcode: 96 (0x60) for GCN 1.4
Syntax: GLOBAL_ATOMIC_SWAP_X2 VDST(2), VADDR(1:2), VDATA(2), SADDR(2)|OFF
Description: Store VDATA 64-bit word into global address. If GLC flag is set then
return previous value from global address to VDST, otherwise keep old value from VDST.
Operation is atomic.
Operation:
UINT64* VM = (UINT64*)(VADDR + SADDR + INST_OFFSET)
UINT64 P = *VM; *VM = VDATA; VDST = (GLC) ? P : VDST // atomic
GLOBAL_ATOMIC_UMAX
Opcode: 71 (0x47) for GCN 1.4
Syntax: GLOBAL_ATOMIC_UMAX VDST, VADDR(1:2), VDATA, SADDR(2)|OFF
Description: Choose greatest unsigned 32-bit value from VDATA and from global address,
and store result to this address.
If GLC flag is set then return previous value from this address to VDST, otherwise keep
VDST value. Operation is atomic.
Operation:
UINT32* VM = (UINT32*)(VADDR + SADDR + INST_OFFSET)
UINT32 P = *VM; *VM = MAX(*VM, (UINT32)VDATA); VDST = (GLC) ? P : VDST // atomic
GLOBAL_ATOMIC_UMAX_X2
Opcode: 103 (0x67) for GCN 1.4
Syntax: GLOBAL_ATOMIC_UMAX_X2 VDST(2), VADDR(1:2), VDATA(2), SADDR(2)|OFF
Description: Choose greatest unsigned 64-bit value from VDATA and from global address,
and store result to this address.
If GLC flag is set then return previous value from this address to VDST, otherwise keep
VDST value. Operation is atomic.
Operation:
UINT64* VM = (UINT64*)(VADDR + SADDR + INST_OFFSET)
UINT64 P = *VM; *VM = MAX(*VM, (UINT64)VDATA); VDST = (GLC) ? P : VDST // atomic
GLOBAL_ATOMIC_UMIN
Opcode: 69 (0x45) for GCN 1.4
Syntax: GLOBAL_ATOMIC_UMIN VDST, VADDR(1:2), VDATA, SADDR(2)|OFF
Description: Choose smallest unsigned 32-bit value from VDATA and from global address,
and store result to this address.
If GLC flag is set then return previous value from this address to VDST, otherwise keep
VDST value. Operation is atomic.
Operation:
UINT32* VM = (UINT32*)(VADDR + SADDR + INST_OFFSET)
UINT32 P = *VM; *VM = MIN(*VM, (UINT32)VDATA); VDST = (GLC) ? P : VDST // atomic
GLOBAL_ATOMIC_UMIN_X2
Opcode: 101 (0x65) for GCN 1.4
Syntax: GLOBAL_ATOMIC_UMIN_X2 VDST(2), VADDR(1:2), VDATA(2), SADDR(2)|OFF
Description: Choose smallest unsigned 64-bit value from VDATA and from global address,
and store result to this address.
If GLC flag is set then return previous value from this address to VDST, otherwise keep
VDST value. Operation is atomic.
Operation:
UINT64* VM = (UINT64*)(VADDR + SADDR + INST_OFFSET)
UINT64 P = *VM; *VM = MIN(*VM, (UINT64)VDATA); VDST = (GLC) ? P : VDST // atomic
GLOBAL_ATOMIC_XOR
Opcode: 74 (0x4a) for GCN 1.4
Syntax: GLOBAL_ATOMIC_XOR VDST, VADDR(1:2), VDATA, SADDR(2)|OFF
Description: Do bitwise XOR on VDATA and value of global address,
and store result to this address. If GLC flag is set then return previous value
from this address to VDST, otherwise keep VDST value. Operation is atomic.
Operation:
UINT32* VM = (UINT32*)(VADDR + SADDR + INST_OFFSET)
UINT32 P = *VM; *VM = *VM ^ VDATA; VDST = (GLC) ? P : VDST // atomic
GLOBAL_ATOMIC_XOR_X2
Opcode: 106 (0x6a) for GCN 1.4
Syntax: GLOBAL_ATOMIC_XOR_X2 VDST(2), VADDR(1:2), VDATA(2), SADDR(2)|OFF
Description: Do 64-bit bitwise XOR on VDATA and value of global address,
and store result to this address. If GLC flag is set then return previous value
from this address to VDST, otherwise keep VDST value. Operation is atomic.
Operation:
UINT64* VM = (UINT64*)(VADDR + SADDR + INST_OFFSET)
UINT64 P = *VM; *VM = *VM ^ VDATA; VDST = (GLC) ? P : VDST // atomic
GLOBAL_LOAD_DWORD
Opcode: 20 (0x14) for GCN 1.4
Syntax: GLOBAL_LOAD_DWORD VDST, VADDR(1:2), SADDR(2)|OFF
Description Load dword to VDST from global address.
Operation:
VDST = *(UINT32*)(VADDR + SADDR + INST_OFFSET)
GLOBAL_LOAD_DWORDX2
Opcode: 21 (0x15) for GCN 1.4
Syntax: GLOBAL_LOAD_DWORDX2 VDST(, VADDR(1:2), SADDR(2)|OFF
Description Load two dwords to VDST from global address.
Operation:
VDST = *(UINT64*)(VADDR + SADDR + INST_OFFSET)
GLOBAL_LOAD_DWORDX3
Opcode: 22 (0x16) for GCN 1.4
Syntax: GLOBAL_LOAD_DWORDX3 VDST(3), VADDR(1:2), SADDR(2)|OFF
Description Load three dwords to VDST from global address.
Operation:
BYTE* VM = (VADDR + SADDR + INST_OFFSET)
VDST[0] = *(UINT32*)VM
VDST[1] = *(UINT32*)(VM+4)
VDST[2] = *(UINT32*)(VM+8)
GLOBAL_LOAD_DWORDX4
Opcode: 23 (0x17) for GCN 1.4
Syntax: GLOBAL_LOAD_DWORDX4 VDST(4), VADDR(1:2), SADDR(2)|OFF
Description Load four dwords to VDST from global address.
Operation:
BYTE* VM = (VADDR + SADDR + INST_OFFSET)
VDST[0] = *(UINT32*)VM
VDST[1] = *(UINT32*)(VM+4)
VDST[2] = *(UINT32*)(VM+8)
VDST[3] = *(UINT32*)(VM+12)
GLOBAL_LOAD_SBYTE
Opcode: 17 (0x11) for GCN 1.4
Syntax: GLOBAL_LOAD_SBYTE VDST, VADDR(1:2), SADDR(2)|OFF
Description: Load byte to VDST from global address with sign extending.
Operation:
VDST = *(INT8*)(VADDR + SADDR + INST_OFFSET)
GLOBAL_LOAD_SBYTE_D16
Opcode: 34 (0x22) for GCN 1.4
Syntax: GLOBAL_LOAD_SBYTE_D16 VDST, VADDR(1:2), SADDR(2)|OFF
Description: Load byte to lower 16-bit part of VDST from
global address with sign extending.
Operation:
BYTE* VM = (VADDR + SADDR + INST_OFFSET)
VDST = ((UINT16)*(INT8*)VM) | (VDST&0xffff0000)
GLOBAL_LOAD_SBYTE_D16_HI
Opcode: 35 (0x23) for GCN 1.4
Syntax: GLOBAL_LOAD_SBYTE_D16_HI VDST, VADDR(1:2), SADDR(2)|OFF
Description: Load byte to higher 16-bit part of VDST from
global address with sign extending.
Operation:
BYTE* VM = (VADDR + SADDR + INST_OFFSET)
VDST = (((UINT32)*(INT8*)VM)<<16) | (VDST&0xffff)
GLOBAL_LOAD_SHORT_D16
Opcode: 36 (0x24) for GCN 1.4
Syntax: GLOBAL_LOAD_SHORT_D16 VDST, VADDR(1:2), SADDR(2)|OFF
Description: Load 16-bit word to lower 16-bit part of VDST from global address.
Operation:
BYTE* VM = (VADDR + SADDR + INST_OFFSET)
VDST = *(UINT16*)VM | (VDST & 0xffff0000)
GLOBAL_LOAD_SHORT_D16_HI
Opcode: 36 (0x24) for GCN 1.4
Syntax: GLOBAL_LOAD_SHORT_D16_HI VDST, VADDR(1:2), SADDR(2)|OFF
Description: Load 16-bit word to lower 16-bit part of VDST from global address.
Operation:
BYTE* VM = (VADDR + SADDR + INST_OFFSET)
VDST = (((UINT32)*(UINT16*)VM)<<16) | (VDST & 0xffff)
GLOBAL_LOAD_SSHORT
Opcode: 19 (0x13) for GCN 1.4
Syntax: GLOBAL_LOAD_SSHORT VDST, VADDR(1:2), SADDR(2)|OFF
Description: Load 16-bit word to VDST from global address with sign extending.
Operation:
VDST = *(INT16*)(VADDR + SADDR + INST_OFFSET)
GLOBAL_LOAD_UBYTE
Opcode: 16 (0x10) for GCN 1.4
Syntax: GLOBAL_LOAD_UBYTE VDST, VADDR(1:2), SADDR(2)|OFF
Description: Load byte to VDST from global address with zero extending.
Operation:
VDST = *(UINT8*)(VADDR + SADDR + INST_OFFSET)
GLOBAL_LOAD_UBYTE_D16
Opcode: 32 (0x20) for GCN 1.4
Syntax: GLOBAL_LOAD_UBYTE_D16 VDST, VADDR(1:2), SADDR(2)|OFF
Description: Load byte to lower 16-bit part of VDST from
global address with zero extending.
Operation:
BYTE* VM = (VADDR + SADDR + INST_OFFSET)
VDST = ((UINT16)*(UINT8*)VM) | (VDST&0xffff0000)
GLOBAL_LOAD_UBYTE_D16_HI
Opcode: 33 (0x21) for GCN 1.4
Syntax: GLOBAL_LOAD_UBYTE_D16_HI VDST, VADDR(1:2), SADDR(2)|OFF
Description: Load byte to higher 16-bit part of VDST from
global address with zero extending.
Operation:
BYTE* VM = (VADDR + SADDR + INST_OFFSET)
VDST = (((UINT32)*(UINT8*)VM)<<16) | (VDST&0xffff)
GLOBAL_LOAD_USHORT
Opcode: 18 (0x12) for GCN 1.4
Syntax: GLOBAL_LOAD_USHORT VDST, VADDR(1:2), SADDR(2)|OFF
Description: Load 16-bit word to VDST from global address with zero extending.
Operation:
VDST = *(UINT16*)(VADDR + SADDR + INST_OFFSET)
GLOBAL_STORE_BYTE
Opcode: 24 (0x18) for GCN 1.4
Syntax: GLOBAL_STORE_BYTE VADDR(1:2), VDATA, SADDR(2)|OFF
Description: Store byte from VDATA to global address.
Operation:
*(UINT8*)(VADDR + SADDR + INST_OFFSET) = VDATA&0xff
GLOBAL_STORE_BYTE_D16_HI
Opcode: 25 (0x19) for GCN 1.4
Syntax: GLOBAL_STORE_BYTE_D16_HI VADDR(1:2), VDATA, SADDR(2)|OFF
Description: Store byte from 16-23 bits of VDATA to global address.
Operation:
*(UINT8*)(VADDR + SADDR + INST_OFFSET) = (VDATA>>16)&0xff
GLOBAL_STORE_DWORD
Opcode: 28 (0x1c) for GCN 1.4
Syntax: GLOBAL_STORE_DWORD VADDR(1:2), VDATA, SADDR(2)|OFF
Description: Store dword from VDATA to global address.
Operation:
*(UINT32*)(VADDR + SADDR + INST_OFFSET) = VDATA
GLOBAL_STORE_DWORDX2
Opcode: 29 (0x1d) for GCN 1.4
Syntax: GLOBAL_STORE_DWORDX2 VADDR(1:2), VDATA(2), SADDR(2)|OFF
Description: Store two dwords from VDATA to global address.
Operation:
*(UINT64*)(VADDR + SADDR + INST_OFFSET) = VDATA
GLOBAL_STORE_DWORDX3
Opcode: 30 (0x1e) for GCN 1.4
Syntax: GLOBAL_STORE_DWORDX3 VADDR(1:2), VDATA(3), SADDR(2)|OFF
Description: Store three dwords from VDATA to global address.
Operation:
BYTE* VM = (VADDR + SADDR + INST_OFFSET)
*(UINT32*)(VM) = VDATA[0]
*(UINT32*)(VM+4) = VDATA[1]
*(UINT32*)(VM+8) = VDATA[2]
GLOBAL_STORE_DWORDX4
Opcode: 31 (0x1d) for GCN 1.4
Syntax: GLOBAL_STORE_DWORDX4 VADDR(1:2), VDATA(4), SADDR(2)|OFF
Description: Store four dwords from VDATA to global address.
Operation:
BYTE* VM = (VADDR + SADDR + INST_OFFSET)
*(UINT32*)(VM) = VDATA[0]
*(UINT32*)(VM+4) = VDATA[1]
*(UINT32*)(VM+8) = VDATA[2]
*(UINT32*)(VM+12) = VDATA[3]
GLOBAL_STORE_SHORT
Opcode: 26 (0x1a) for GCN 1.4
Syntax: GLOBAL_STORE_SHORT VADDR(1:2), VDATA, SADDR(2)|OFF
Description: Store 16-bit word from VDATA to global address.
Operation:
*(UINT16*)(VADDR + SADDR + INST_OFFSET) = VDATA&0xffff
GLOBAL_STORE_SHORT_D16_HI
Opcode: 27 (0x1b) for GCN 1.4
Syntax: GLOBAL_STORE_SHORT_D16_HI VADDR(1:2), VDATA, SADDR(2)|OFF
Description: Store 16-bit word from higher 16-bit part of VDATA to global address.
Operation:
*(UINT16*)(VADDR + SADDR + INST_OFFSET) = VDATA>>16
SCRATCH_LOAD_DWORD
Opcode: 20 (0x14) for GCN 1.4
Syntax: SCRATCH_LOAD_DWORD VDST, VADDR|OFF, SADDR|OFF
Description Load dword to VDST from scratch memory address.
Operation:
VDST = *(UINT32*)SWIZZLE(ADDR, INST_OFFSET, LANEID)
SCRATCH_LOAD_DWORDX2
Opcode: 21 (0x15) for GCN 1.4
Syntax: SCRATCH_LOAD_DWORDX2 VDST(, VADDR|OFF, SADDR|OFF
Description Load two dwords to VDST from scratch memory address.
Operation:
VDST = *(UINT64*)SWIZZLE(ADDR, INST_OFFSET, LANEID)
SCRATCH_LOAD_DWORDX3
Opcode: 22 (0x16) for GCN 1.4
Syntax: SCRATCH_LOAD_DWORDX3 VDST(3), VADDR|OFF, SADDR|OFF
Description Load three dwords to VDST from scratch memory address.
Operation:
BYTE* VM = SWIZZLE(ADDR, INST_OFFSET, LANEID)
VDST[0] = *(UINT32*)VM
VDST[1] = *(UINT32*)(VM+4)
VDST[2] = *(UINT32*)(VM+8)
SCRATCH_LOAD_DWORDX4
Opcode: 23 (0x17) for GCN 1.4
Syntax: SCRATCH_LOAD_DWORDX4 VDST(4), VADDR|OFF, SADDR|OFF
Description Load four dwords to VDST from scratch memory address.
Operation:
BYTE* VM = SWIZZLE(ADDR, INST_OFFSET, LANEID)
VDST[0] = *(UINT32*)VM
VDST[1] = *(UINT32*)(VM+4)
VDST[2] = *(UINT32*)(VM+8)
VDST[3] = *(UINT32*)(VM+12)
SCRATCH_LOAD_SBYTE
Opcode: 17 (0x11) for GCN 1.4
Syntax: SCRATCH_LOAD_SBYTE VDST, VADDR|OFF, SADDR|OFF
Description: Load byte to VDST from scratch memory address with sign extending.
Operation:
VDST = *(INT8*)SWIZZLE(ADDR, INST_OFFSET, LANEID)
SCRATCH_LOAD_SBYTE_D16
Opcode: 34 (0x22) for GCN 1.4
Syntax: SCRATCH_LOAD_SBYTE_D16 VDST, VADDR|OFF, SADDR|OFF
Description: Load byte to lower 16-bit part of VDST from
scratch memory address with sign extending.
Operation:
BYTE* VM = SWIZZLE(ADDR, INST_OFFSET, LANEID)
VDST = ((UINT16)*(INT8*)VM) | (VDST&0xffff0000)
SCRATCH_LOAD_SBYTE_D16_HI
Opcode: 35 (0x23) for GCN 1.4
Syntax: SCRATCH_LOAD_SBYTE_D16_HI VDST, VADDR|OFF, SADDR|OFF
Description: Load byte to higher 16-bit part of VDST from
scratch memory address with sign extending.
Operation:
BYTE* VM = SWIZZLE(ADDR, INST_OFFSET, LANEID)
VDST = (((UINT32)*(INT8*)VM)<<16) | (VDST&0xffff)
SCRATCH_LOAD_SHORT_D16
Opcode: 36 (0x24) for GCN 1.4
Syntax: SCRATCH_LOAD_SHORT_D16 VDST, VADDR|OFF, SADDR|OFF
Description: Load 16-bit word to lower 16-bit part of VDST from scratch memory address.
Operation:
BYTE* VM = SWIZZLE(ADDR, INST_OFFSET, LANEID)
VDST = *(UINT16*)VM | (VDST & 0xffff0000)
SCRATCH_LOAD_SHORT_D16_HI
Opcode: 36 (0x24) for GCN 1.4
Syntax: SCRATCH_LOAD_SHORT_D16_HI VDST, VADDR|OFF, SADDR|OFF
Description: Load 16-bit word to lower 16-bit part of VDST from scratch memory address.
Operation:
BYTE* VM = SWIZZLE(ADDR, INST_OFFSET, LANEID)
VDST = (((UINT32)*(UINT16*)VM)<<16) | (VDST & 0xffff)
SCRATCH_LOAD_SSHORT
Opcode: 19 (0x13) for GCN 1.4
Syntax: SCRATCH_LOAD_SSHORT VDST, VADDR|OFF, SADDR|OFF
Description: Load 16-bit word to VDST from scratch memory address with sign extending.
Operation:
VDST = *(INT16*)SWIZZLE(ADDR, INST_OFFSET, LANEID)
SCRATCH_LOAD_UBYTE
Opcode: 16 (0x10) for GCN 1.4
Syntax: SCRATCH_LOAD_UBYTE VDST, VADDR|OFF, SADDR|OFF
Description: Load byte to VDST from scratch memory address with zero extending.
Operation:
VDST = *(UINT8*)SWIZZLE(ADDR, INST_OFFSET, LANEID)
SCRATCH_LOAD_UBYTE_D16
Opcode: 32 (0x20) for GCN 1.4
Syntax: SCRATCH_LOAD_UBYTE_D16 VDST, VADDR|OFF, SADDR|OFF
Description: Load byte to lower 16-bit part of VDST from
scratch memory address with zero extending.
Operation:
BYTE* VM = SWIZZLE(ADDR, INST_OFFSET, LANEID)
VDST = ((UINT16)*(UINT8*)VM) | (VDST&0xffff0000)
SCRATCH_LOAD_UBYTE_D16_HI
Opcode: 33 (0x21) for GCN 1.4
Syntax: SCRATCH_LOAD_UBYTE_D16_HI VDST, VADDR|OFF, SADDR|OFF
Description: Load byte to higher 16-bit part of VDST from
scratch memory address with zero extending.
Operation:
BYTE* VM = SWIZZLE(ADDR, INST_OFFSET, LANEID)
VDST = (((UINT32)*(UINT8*)VM)<<16) | (VDST&0xffff)
SCRATCH_LOAD_USHORT
Opcode: 18 (0x12) for GCN 1.4
Syntax: SCRATCH_LOAD_USHORT VDST, VADDR|OFF, SADDR|OFF
Description: Load 16-bit word to VDST from scratch memory address with zero extending.
Operation:
VDST = *(UINT16*)SWIZZLE(ADDR, INST_OFFSET, LANEID)
SCRATCH_STORE_BYTE
Opcode: 24 (0x18) for GCN 1.4
Syntax: SCRATCH_STORE_BYTE VADDR|OFF, VDATA, SADDR|OFF
Description: Store byte from VDATA to scratch memory address.
Operation:
*(UINT8*)SWIZZLE(ADDR, INST_OFFSET, LANEID) = VDATA&0xff
SCRATCH_STORE_BYTE_D16_HI
Opcode: 25 (0x19) for GCN 1.4
Syntax: SCRATCH_STORE_BYTE_D16_HI VADDR|OFF, VDATA, SADDR|OFF
Description: Store byte from 16-23 bits of VDATA to scratch memory address.
Operation:
*(UINT8*)SWIZZLE(ADDR, INST_OFFSET, LANEID) = (VDATA>>16)&0xff
SCRATCH_STORE_DWORD
Opcode: 28 (0x1c) for GCN 1.4
Syntax: SCRATCH_STORE_DWORD VADDR|OFF, VDATA, SADDR|OFF
Description: Store dword from VDATA to scratch memory address.
Operation:
*(UINT32*)SWIZZLE(ADDR, INST_OFFSET, LANEID) = VDATA
SCRATCH_STORE_DWORDX2
Opcode: 29 (0x1d) for GCN 1.4
Syntax: SCRATCH_STORE_DWORDX2 VADDR|OFF, VDATA(2), SADDR|OFF
Description: Store two dwords from VDATA to scratch memory address.
Operation:
*(UINT64*)SWIZZLE(ADDR, INST_OFFSET, LANEID) = VDATA
SCRATCH_STORE_DWORDX3
Opcode: 30 (0x1e) for GCN 1.4
Syntax: SCRATCH_STORE_DWORDX3 VADDR|OFF, VDATA(3), SADDR|OFF
Description: Store three dwords from VDATA to scratch memory address.
Operation:
BYTE* VM = SWIZZLE(ADDR, INST_OFFSET, LANEID)
*(UINT32*)(VM) = VDATA[0]
*(UINT32*)(VM+4) = VDATA[1]
*(UINT32*)(VM+8) = VDATA[2]
SCRATCH_STORE_DWORDX4
Opcode: 31 (0x1d) for GCN 1.4
Syntax: SCRATCH_STORE_DWORDX4 VADDR|OFF, VDATA(4), SADDR|OFF
Description: Store four dwords from VDATA to scratch memory address.
Operation:
BYTE* VM = SWIZZLE(ADDR, INST_OFFSET, LANEID)
*(UINT32*)(VM) = VDATA[0]
*(UINT32*)(VM+4) = VDATA[1]
*(UINT32*)(VM+8) = VDATA[2]
*(UINT32*)(VM+12) = VDATA[3]
SCRATCH_STORE_SHORT
Opcode: 26 (0x1a) for GCN 1.4
Syntax: SCRATCH_STORE_SHORT VADDR|OFF, VDATA, SADDR|OFF
Description: Store 16-bit word from VDATA to scratch memory address.
Operation:
*(UINT16*)SWIZZLE(ADDR, INST_OFFSET, LANEID) = VDATA&0xffff
SCRATCH_STORE_SHORT_D16_HI
Opcode: 27 (0x1b) for GCN 1.4
Syntax: SCRATCH_STORE_SHORT_D16_HI VADDR|OFF, VDATA, SADDR|OFF
Description: Store 16-bit word from higher 16-bit part of VDATA to scratch memory address.
Operation:
*(UINT16*)SWIZZLE(ADDR, INST_OFFSET, LANEID) = VDATA>>16