flat_atomic_fcmpswap GPU Native ISA AMD Vector
FLAT ATOMIC FCMPSWAP Flat Memory
flat_atomic_fcmpswap
Compare two single-precision float values stored in the data comparison register and a location in the flat aperture.
Encoding
Verified bit-level encoding data is not yet available for this instruction.
The instruction-format classification below (FLAT)
is well-documented and stable; exact per-target opcode/field bit positions have not
yet been imported from a verified source.
Operands
Operand details have not yet been curated for this instruction.
GFX Target Compatibility
| Target | Support |
|---|---|
| gfx1100 | ✅ Supported |
Related
More in Flat Memory
Reference
AMDGPU / GFX ISA
Description
Compare two single-precision float values stored in the data comparison register and a location in the flat aperture. Modify the memory location with a value in the data source register iff the comparison is equal. Store the original value from flat aperture into a vector register iff the GLC bit is set.
Sources
- User Guide for AMDGPU Backend ↗ - LLVM Project
- AMD Machine-Readable GPU ISA Specification ↗ - Advanced Micro Devices, Inc.