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[MLIR][NVVM] Fix undef in cp.async.bulk.tensor.reduce Op #157423

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Merged
Wolfram70 merged 7 commits into from
Sep 23, 2025
Merged

[MLIR][NVVM] Fix undef in cp.async.bulk.tensor.reduce Op #157423

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0593fd9
[MLIR][NVVM] Fix undef in cp.async.bulk.tensor.reduce Op
Wolfram70 Sep 8, 2025
6ad4d3c
address comments
Wolfram70 Sep 9, 2025
b715372
fix format
Wolfram70 Sep 9, 2025
02ee37d
remove macro
Wolfram70 Sep 9, 2025
6a1daf0
address comments
Wolfram70 Sep 15, 2025
fb1be2f
add asserts
Wolfram70 Sep 15, 2025
5098808
rename noIntrinsic to notIntrinsic
Wolfram70 Sep 19, 2025
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30 changes: 6 additions & 24 deletions mlir/include/mlir/Dialect/LLVMIR/NVVMOps.td
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Original file line number Diff line number Diff line change
Expand Up @@ -2795,35 +2795,17 @@ def NVVM_CpAsyncBulkTensorReduceOp :
}];

let extraClassDeclaration = [{
static llvm::Intrinsic::ID getIntrinsicID(int tensorDims,
NVVM::TMAReduxKind kind,
bool isIm2Col);
static mlir::NVVM::IDArgPair
getIntrinsicIDAndArgs(Operation &op,
LLVM::ModuleTranslation &mt, llvm::IRBuilderBase& builder);
}];

let hasVerifier = 1;

string llvmBuilder = [{
// Arguments to the intrinsic:
// shared_mem_ptr, tmaDesc, tensorDims
// cache_hint(if applicable) and flag(boolean)
llvm::SmallVector<llvm::Value *> translatedOperands;
translatedOperands.push_back($srcMem);
translatedOperands.push_back($tmaDescriptor);

for (auto v : op.getCoordinates())
translatedOperands.push_back(moduleTranslation.lookupValue(v));

llvm::LLVMContext &ctx = moduleTranslation.getLLVMContext();
auto *i64Undef = llvm::UndefValue::get(llvm::IntegerType::get(ctx, 64));

bool isCacheHint = op.getL2CacheHint() ? true : false;
translatedOperands.push_back(isCacheHint ? $l2CacheHint : i64Undef);
translatedOperands.push_back(builder.getInt1(isCacheHint));

auto intId = NVVM::CpAsyncBulkTensorReduceOp::getIntrinsicID(
op.getCoordinates().size(), $redKind,
(op.getMode() == NVVM::TMAStoreMode::IM2COL));
createIntrinsicCall(builder, intId, translatedOperands);
auto [id, args] = NVVM::CpAsyncBulkTensorReduceOp::getIntrinsicIDAndArgs(
*op, moduleTranslation, builder);
createIntrinsicCall(builder, id, args);
}];
}

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89 changes: 60 additions & 29 deletions mlir/lib/Dialect/LLVMIR/IR/NVVMDialect.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -1641,46 +1641,77 @@ CpAsyncBulkTensorSharedCTAToGlobalOp::getIntrinsicIDAndArgs(
is_im2col ? CP_ASYNC_BULK_TENSOR_REDUCE_MODE(op, dim, im2col) \
: CP_ASYNC_BULK_TENSOR_REDUCE_MODE(op, dim, tile)

#define GET_CP_ASYNC_BULK_TENSOR_ID(op, dims, is_im2col) \
[&]() -> auto { \
switch (dims) { \
case 1: \
return CP_ASYNC_BULK_TENSOR_REDUCE_MODE(op, 1, tile); \
case 2: \
return CP_ASYNC_BULK_TENSOR_REDUCE_MODE(op, 2, tile); \
case 3: \
return CP_ASYNC_BULK_TENSOR_REDUCE(op, 3, is_im2col); \
case 4: \
return CP_ASYNC_BULK_TENSOR_REDUCE(op, 4, is_im2col); \
case 5: \
return CP_ASYNC_BULK_TENSOR_REDUCE(op, 5, is_im2col); \
default: \
llvm_unreachable("Invalid TensorDim in CpAsyncBulkTensorReduceOp."); \
} \
}()
#define GET_CP_ASYNC_BULK_TENSOR_ID(iid, op, dims, is_im2col) \
switch (dims) { \
case 1: \
iid = CP_ASYNC_BULK_TENSOR_REDUCE_MODE(op, 1, tile); \
break; \
case 2: \
iid = CP_ASYNC_BULK_TENSOR_REDUCE_MODE(op, 2, tile); \
break; \
case 3: \
iid = CP_ASYNC_BULK_TENSOR_REDUCE(op, 3, is_im2col); \
break; \
case 4: \
iid = CP_ASYNC_BULK_TENSOR_REDUCE(op, 4, is_im2col); \
break; \
case 5: \
iid = CP_ASYNC_BULK_TENSOR_REDUCE(op, 5, is_im2col); \
break; \
default: \
llvm_unreachable("Invalid TensorDim in CpAsyncBulkTensorReduceOp."); \
break; \
} \
break;

NVVM::IDArgPair CpAsyncBulkTensorReduceOp::getIntrinsicIDAndArgs(
Operation &op, LLVM::ModuleTranslation &mt, llvm::IRBuilderBase &builder) {
auto thisOp = cast<NVVM::CpAsyncBulkTensorReduceOp>(op);
llvm::LLVMContext &ctx = mt.getLLVMContext();

llvm::SmallVector<llvm::Value *> args;

// Arguments to the intrinsic:
// shared_mem_ptr, tmaDesc, tensorDims
// cache_hint(if applicable) and flag(boolean)
args.push_back(mt.lookupValue(thisOp.getSrcMem()));
args.push_back(mt.lookupValue(thisOp.getTmaDescriptor()));

for (auto v : thisOp.getCoordinates())
args.push_back(mt.lookupValue(v));

mlir::Value cacheHint = thisOp.getL2CacheHint();
const bool hasCacheHint = static_cast<bool>(cacheHint);
llvm::Value *i64Unused =
llvm::ConstantInt::get(llvm::Type::getInt64Ty(ctx), 0);
args.push_back(hasCacheHint ? mt.lookupValue(cacheHint) : i64Unused);
args.push_back(builder.getInt1(hasCacheHint));

llvm::Intrinsic::ID iid;
int tensorDims = thisOp.getCoordinates().size();
bool isIm2Col = thisOp.getMode() == NVVM::TMAStoreMode::IM2COL;

llvm::Intrinsic::ID CpAsyncBulkTensorReduceOp::getIntrinsicID(
int tensorDims, NVVM::TMAReduxKind kind, bool isIm2Col) {
using RedTy = NVVM::TMAReduxKind;
switch (kind) {
switch (thisOp.getRedKind()) {
case RedTy::ADD:
return GET_CP_ASYNC_BULK_TENSOR_ID(reduce_add, tensorDims, isIm2Col);
GET_CP_ASYNC_BULK_TENSOR_ID(iid, reduce_add, tensorDims, isIm2Col);
case RedTy::MIN:
return GET_CP_ASYNC_BULK_TENSOR_ID(reduce_min, tensorDims, isIm2Col);
GET_CP_ASYNC_BULK_TENSOR_ID(iid, reduce_min, tensorDims, isIm2Col);
case RedTy::MAX:
return GET_CP_ASYNC_BULK_TENSOR_ID(reduce_max, tensorDims, isIm2Col);
GET_CP_ASYNC_BULK_TENSOR_ID(iid, reduce_max, tensorDims, isIm2Col);
case RedTy::INC:
return GET_CP_ASYNC_BULK_TENSOR_ID(reduce_inc, tensorDims, isIm2Col);
GET_CP_ASYNC_BULK_TENSOR_ID(iid, reduce_inc, tensorDims, isIm2Col);
case RedTy::DEC:
return GET_CP_ASYNC_BULK_TENSOR_ID(reduce_dec, tensorDims, isIm2Col);
GET_CP_ASYNC_BULK_TENSOR_ID(iid, reduce_dec, tensorDims, isIm2Col);
case RedTy::AND:
return GET_CP_ASYNC_BULK_TENSOR_ID(reduce_and, tensorDims, isIm2Col);
GET_CP_ASYNC_BULK_TENSOR_ID(iid, reduce_and, tensorDims, isIm2Col);
case RedTy::OR:
return GET_CP_ASYNC_BULK_TENSOR_ID(reduce_or, tensorDims, isIm2Col);
GET_CP_ASYNC_BULK_TENSOR_ID(iid, reduce_or, tensorDims, isIm2Col);
case RedTy::XOR:
return GET_CP_ASYNC_BULK_TENSOR_ID(reduce_xor, tensorDims, isIm2Col);
GET_CP_ASYNC_BULK_TENSOR_ID(iid, reduce_xor, tensorDims, isIm2Col);
}
llvm_unreachable("Invalid Reduction Op for CpAsyncBulkTensorReduceOp");

return {iid, std::move(args)};
}

#define _none
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