low.func.decl
← low dialect
Target-bound low function declaration with register-typed signature values. Allocation and scheduling exactness independently describe the imported implementation contract.
Operation contract
| Property |
Value |
| Semantic phase |
executable |
| Traits |
SymbolDefine |
| Interfaces |
FuncLike |
Symbol contract
| Property |
Value |
| Kind |
function |
| Defining field |
callee |
| Interfaces |
func_like, callable |
| Flags |
declaration |
Signature
| Kind |
Name |
Type |
Cardinality |
Description |
| Operand |
args |
register |
variadic |
— |
| Result |
results |
register |
variadic |
— |
| Attribute |
callee |
symbol |
required |
— |
| Attribute |
target |
symbol (target) |
optional |
— |
| Attribute |
descriptor_set |
string |
required |
Canonical descriptor-set key governing the low representation. |
| Attribute |
abi |
enum ExportAbiKind |
optional |
— |
| Attribute |
abi_attrs |
dict |
optional |
— |
| Attribute |
abi_layout |
dict |
optional |
— |
| Attribute |
export_symbol |
string |
optional |
— |
| Attribute |
export_attrs |
dict |
optional |
— |
| Attribute |
visibility |
enum Visibility |
optional |
— |
| Attribute |
cc |
enum CallingConv |
optional |
— |
| Attribute |
purity |
enum Purity |
optional |
— |
| Attribute |
inline_policy |
enum InlinePolicy |
optional |
— |
| Attribute |
allocation |
enum LowAllocationMode |
optional |
— |
| Attribute |
schedule |
enum LowScheduleMode |
optional |
— |
| Attribute |
predicates |
predicate_list |
optional |
— |
| Attribute |
retain |
enum Retain |
optional |
— |
| Attribute |
import_kind |
enum LowCodeImportKind |
optional |
— |
| Attribute |
code_symbol |
string |
optional |
— |
| Attribute |
import_module |
string |
optional |
Runtime module namespace owning the imported code symbol. |
Examples
low.func.decl target<amdgpu.gfx11.generic.core>(@gfx11_generic) @extern_add(%lhs: reg<amdgpu.vgpr x1>, %rhs: reg<amdgpu.vgpr x1>) -> (reg<amdgpu.vgpr x1>)
low.func.decl allocation(fixed) import(rocasm, "fixed_register_fragment") target<amdgpu.gfx11.generic.core>(@gfx11_generic) @fixed_register_fragment(%acc: reg<amdgpu.vgpr x4>) -> (reg<amdgpu.vgpr x4>)
low.func.decl schedule(locked) import(rocasm, "exact_order_fragment") target<amdgpu.gfx11.generic.core>(@gfx11_generic) @exact_order_fragment(%acc: reg<amdgpu.vgpr x4>) -> (reg<amdgpu.vgpr x4>)