s_wait_xcnt GPU Native ISA AMD Scalar

Branch & Control

s_wait_xcnt

Wait until XCNT is less than or equal to SIMM16[5:0].

Encoding

Binary Layout (AMD CDNA 5)
101111111
31:23
1000101
22:16
SIMM16
15:0
 

The ENC_SOPP layout from AMD's machine-readable ISA specification (AMD CDNA 5). Opcode 69 in OP rebuilds 0xBFC50000, an identifier AMD lists for this encoding. No other generation in the specification defines this instruction.

Format SOPP
Width 32 bits
Opcode 69
Identifier 0xBFC50000

Operands

  • SIMM16
    Read. 16-bit integer constant. Data format: 16 bits of arbitrary data. (OPR_SIMM16, FMT_NUM_B16)

In AMD's order, as its machine-readable ISA specification lists them for the ENC_SOPP encoding (AMD CDNA 5).

GFX Target Compatibility

Per-target GFX compatibility has not yet been verified for this instruction.

Related

More in Branch & Control

Reference

AMDGPU / GFX ISA

Sources