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MLIR Translation: Implement Barrier0Op #39

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MLIR Translation: Implement Barrier0Op #39

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1 change: 1 addition & 0 deletions cext/mlir-llvm70/include/llvm70/LLVM70Target.h
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Original file line number Diff line number Diff line change
Expand Up @@ -153,6 +153,7 @@ class MLIRToLLVM70 {
llvm::Error translateClusterArriveOp(mlir::Operation *op, bool isRelaxed);
llvm::Error translateClusterWaitOp(mlir::Operation *op);
llvm::Error translateBarrierOp(mlir::Operation *op);
llvm::Error translateBarrier0Op(mlir::Operation *op);
llvm::Error translateCttzCtlzOp(mlir::Operation *op, llvm::StringRef intrBase,
mlir::Value in, mlir::Value res,
bool isZeroPoison);
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14 changes: 14 additions & 0 deletions cext/mlir-llvm70/lib/LLVM70Target.cpp
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Expand Up @@ -1756,6 +1756,18 @@ llvm::Error MLIRToLLVM70::translateBarrierOp(Operation *op) {
return llvm::Error::success();
}

llvm::Error MLIRToLLVM70::translateBarrier0Op(Operation *op) {
// NVVM::Barrier0Op takes no operands and is equivalent to bar.sync 0.
// Lower it to the LLVM 7 intrinsic llvm.nvvm.barrier0() : void.
const char *intrName = "llvm.nvvm.barrier0";
LLVMTypeRef fnTy = b.funcTy(b.voidTy(), nullptr, 0, false);
LLVMValueRef fn = b.getNamedFunction(intrName);
if (!fn)
fn = b.addFunction(intrName, fnTy);
b.buildCall(fn, nullptr, 0, "");
return llvm::Error::success();
}

llvm::Error MLIRToLLVM70::translateCttzCtlzOp(Operation *op,
llvm::StringRef intrBase,
Value in, Value res,
Expand Down Expand Up @@ -2412,6 +2424,8 @@ llvm::Error MLIRToLLVM70::translateNVVMOp(Operation *op) {
[&](auto) { return this->translateClusterWaitOp(op); })
.Case<NVVM::BarrierOp>(
[&](auto) { return this->translateBarrierOp(op); })
.Case<NVVM::Barrier0Op>(
[&](auto) { return this->translateBarrier0Op(op); })
.Case<NVVM::Breakpoint>([&](auto) {
LLVMTypeRef fnTy = b.funcTy(b.voidTy(), nullptr, 0, false);
LLVMValueRef asmVal =
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