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[MLIR][XeGPU] Adding XeGPU 2d block operators (llvm#84692)
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Hi @joker-eph, This PR adds XeGPU 2D block operators. It contains:
1. `TensorDescType` and `TensorDescAttr` definitions
2. `MemoryScopeAttr` and `CacheHintAttr` definitions which are used by
`TensorDescAttr`.
3. `CreateNdDescOp`, `PrefetchNdOp`, `LoadNdOp`, and `StoreNdOp`
definitions, and their corresponding testcases for illustration.

---------

Co-authored-by: Mehdi Amini <joker.eph@gmail.com>
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chencha3 and joker-eph authored Mar 18, 2024
1 parent a9f78a3 commit daebe5c
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7 changes: 6 additions & 1 deletion mlir/include/mlir/Dialect/XeGPU/IR/XeGPU.h
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#ifndef MLIR_DIALECT_XEGPU_IR_XEGPU_H
#define MLIR_DIALECT_XEGPU_IR_XEGPU_H

#include <mlir/IR/Dialect.h>
#include "mlir/Bytecode/BytecodeOpInterface.h"
#include "mlir/IR/BuiltinTypes.h"
#include "mlir/IR/Dialect.h"
#include "mlir/Interfaces/ShapedOpInterfaces.h"
#include "mlir/Interfaces/SideEffectInterfaces.h"
#include "mlir/Interfaces/ViewLikeInterface.h"

namespace mlir {
namespace xegpu {
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61 changes: 61 additions & 0 deletions mlir/include/mlir/Dialect/XeGPU/IR/XeGPUAttrs.td
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#define MLIR_DIALECT_XEGPU_IR_XEGPUATTRS_TD

include "mlir/Dialect/XeGPU/IR/XeGPUDialect.td"
include "mlir/IR/EnumAttr.td"

class XeGPUAttr<string name, string attrMnemonic, list<Trait> traits = [],
string baseCppClass = "::mlir::Attribute">
: AttrDef<XeGPU_Dialect, name, traits, baseCppClass> {
let mnemonic = attrMnemonic;
}

def XeGPU_TensorDescAttr: XeGPUAttr<"TensorDesc", "tdesc_attr"> {
let parameters = (ins
OptionalParameter<"MemoryScopeAttr">: $memory_scope,
OptionalParameter<"IntegerAttr", "1">: $array_length,
OptionalParameter<"BoolAttr", "true">: $boundary_check
);

let builders = [
AttrBuilder<(ins
CArg<"xegpu::MemoryScope", "xegpu::MemoryScope::Global">:$memory_scope,
CArg<"int", "1">:$array_length,
CArg<"bool", "true">: $boundary_check
)>
];

let assemblyFormat = "`<` struct(params) `>`";
}

//===----------------------------------------------------------------------===//
// XeGPU Memory Scope Enums.
//===----------------------------------------------------------------------===//
def XeGPU_MemoryScopeGlobal: I32EnumAttrCase<"Global", 0, "global">;
def XeGPU_MemoryScopeShared: I32EnumAttrCase<"SLM", 1, "slm">;
def XeGPU_MemoryScope: I32EnumAttr<"MemoryScope",
"The address space of the memory the tensor descritor is created for",
[XeGPU_MemoryScopeGlobal, XeGPU_MemoryScopeShared]> {
let genSpecializedAttr = 0;
let cppNamespace = "::mlir::xegpu";
}

def XeGPU_MemoryScopeAttr:
EnumAttr<XeGPU_Dialect, XeGPU_MemoryScope, "memory_scope"> {
let assemblyFormat = "$value";
}

//===----------------------------------------------------------------------===//
// XeGPU Cache Enums.
//===----------------------------------------------------------------------===//
def XeGPU_CachePolicyCached: I32EnumAttrCase<"CACHED", 0, "cached">; // valid for read and write
def XeGPU_CachePolicyUncached: I32EnumAttrCase<"UNCACHED", 1, "uncached">; // valid for read and write
def XeGPU_CachePolicyStreaming: I32EnumAttrCase<"STREAMING", 2, "streaming">; // valid for read only
def XeGPU_CachePolicyInvalid: I32EnumAttrCase<"READ_INVALIDATE", 3, "read_invalidate">; // valid for read only
def XeGPU_CachePolicyWriteBack: I32EnumAttrCase<"WRITE_BACK", 4, "write_back">; // valid for write only
def XeGPU_CachePolicyWriteThrough: I32EnumAttrCase<"WRITE_THROUGH", 5, "write_through">; // valid for write only

def XeGPU_CachePolicyEnums : I32EnumAttr<"CachePolicy", "Cache policy",
[XeGPU_CachePolicyCached, XeGPU_CachePolicyUncached,
XeGPU_CachePolicyStreaming, XeGPU_CachePolicyInvalid,
XeGPU_CachePolicyWriteBack, XeGPU_CachePolicyWriteThrough]> {
let genSpecializedAttr = 0;
let cppNamespace = "::mlir::xegpu";
}

def XeGPU_CacheHintAttr
: EnumAttr<XeGPU_Dialect, XeGPU_CachePolicyEnums, "cache_hint"> {
let assemblyFormat = "`<` $value `>`";
}



#endif // MLIR_DIALECT_XEGPU_IR_XEGPUATTRS_TD
4 changes: 2 additions & 2 deletions mlir/include/mlir/Dialect/XeGPU/IR/XeGPUDialect.td
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Expand Up @@ -23,8 +23,8 @@ def XeGPU_Dialect : Dialect {
the lower-level GPU compiler.
}];

// let useDefaultTypePrinterParser = true;
// let useDefaultAttributePrinterParser = true;
let useDefaultTypePrinterParser = true;
let useDefaultAttributePrinterParser = true;
}

#endif // MLIR_DIALECT_XEGPU_IR_XEGPUDIALECT_TD
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