[flang-commits] [flang] [mlir] [MLIR][NVVM] Split nvvm.barrier into nvvm.barrier and nvvm.barrier.reduction (PR #199404)

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Sun May 24 01:27:57 PDT 2026


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``````````bash
git-clang-format --diff origin/main HEAD --extensions cpp -- flang/lib/Optimizer/Builder/CUDAIntrinsicCall.cpp mlir/lib/Conversion/GPUToNVVM/LowerGpuOpsToNVVMOps.cpp mlir/lib/Dialect/LLVMIR/IR/NVVMDialect.cpp --diff_from_common_commit
``````````

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View the diff from clang-format here.
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``````````diff
diff --git a/mlir/lib/Conversion/GPUToNVVM/LowerGpuOpsToNVVMOps.cpp b/mlir/lib/Conversion/GPUToNVVM/LowerGpuOpsToNVVMOps.cpp
index e03b37a1c..ef4207a50 100644
--- a/mlir/lib/Conversion/GPUToNVVM/LowerGpuOpsToNVVMOps.cpp
+++ b/mlir/lib/Conversion/GPUToNVVM/LowerGpuOpsToNVVMOps.cpp
@@ -415,8 +415,8 @@ struct AssertOpToAssertfailLowering
 /// Follows the SSA chain `insertvalue[0] -> load -> addressof -> global`
 /// to recover the integer initializer behind field [0] of `namedBarrier`,
 /// since `nvvm.barrier` carries `barrierId` as an `IntegerAttr`.
-static FailureOr<uint32_t>
-extractStaticNamedBarrierId(Operation *contextOp, Value namedBarrier) {
+static FailureOr<uint32_t> extractStaticNamedBarrierId(Operation *contextOp,
+                                                       Value namedBarrier) {
   auto insertOp = namedBarrier.getDefiningOp<LLVM::InsertValueOp>();
   while (insertOp && insertOp.getPosition() != ArrayRef<int64_t>{0})
     insertOp = insertOp.getContainer().getDefiningOp<LLVM::InsertValueOp>();
diff --git a/mlir/lib/Dialect/LLVMIR/IR/NVVMDialect.cpp b/mlir/lib/Dialect/LLVMIR/IR/NVVMDialect.cpp
index 29f969874..2cd1c0ea9 100644
--- a/mlir/lib/Dialect/LLVMIR/IR/NVVMDialect.cpp
+++ b/mlir/lib/Dialect/LLVMIR/IR/NVVMDialect.cpp
@@ -2936,9 +2936,7 @@ static LogicalResult verifyBarrierIdRange(BarrierLikeOp op) {
   return success();
 }
 
-LogicalResult NVVM::BarrierOp::verify() {
-  return verifyBarrierIdRange(*this);
-}
+LogicalResult NVVM::BarrierOp::verify() { return verifyBarrierIdRange(*this); }
 
 LogicalResult NVVM::BarrierReductionOp::verify() {
   return verifyBarrierIdRange(*this);

``````````

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https://github.com/llvm/llvm-project/pull/199404


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