[flang][cuda] Add verifier for cuda_alloc/cuda_free (#90983)

Adding a verifier to check the associated cuda attribute.

Author: clementval

flang/include/flang/Optimizer/Dialect/FIROps.td

@@ -3364,6 +3364,8 @@ def fir_CUDAAllocOp : fir_Op<"cuda_alloc", [AttrSizedOperandSegments,
       CArg<"mlir::ValueRange", "{}">:$typeparams,
       CArg<"mlir::ValueRange", "{}">:$shape,
       CArg<"llvm::ArrayRef<mlir::NamedAttribute>", "{}">:$attributes)>];
+
+  let hasVerifier = 1;
 }
 
 def fir_CUDAFreeOp : fir_Op<"cuda_free", [MemoryEffects<[MemFree]>]> {
@@ -3381,6 +3383,8 @@ def fir_CUDAFreeOp : fir_Op<"cuda_free", [MemoryEffects<[MemFree]>]> {
   );
 
   let assemblyFormat = "$devptr `:` qualified(type($devptr)) attr-dict";
+
+  let hasVerifier = 1;
 }
 
 #endif

flang/lib/Optimizer/Dialect/FIROps.cpp

@@ -4048,6 +4048,19 @@ void fir::CUDAAllocOp::build(
   result.addAttributes(attributes);
 }
 
+template <typename Op>
+static mlir::LogicalResult checkCudaAttr(Op op) {
+  if (op.getCudaAttr() == fir::CUDADataAttribute::Device ||
+      op.getCudaAttr() == fir::CUDADataAttribute::Managed ||
+      op.getCudaAttr() == fir::CUDADataAttribute::Unified)
+    return mlir::success();
+  return op.emitOpError("expect device, managed or unified cuda attribute");
+}
+
+mlir::LogicalResult fir::CUDAAllocOp::verify() { return checkCudaAttr(*this); }
+
+mlir::LogicalResult fir::CUDAFreeOp::verify() { return checkCudaAttr(*this); }
+
 //===----------------------------------------------------------------------===//
 // FIROpsDialect
 //===----------------------------------------------------------------------===//

flang/test/Fir/cuf-invalid.fir

@@ -85,3 +85,21 @@ func.func @_QPsub1() {
   %13 = fir.cuda_deallocate %11 : !fir.ref<!fir.box<none>> errmsg(%16 : !fir.box<none>) {cuda_attr = #fir.cuda<device>} -> i32
   return
 }
+
+// -----
+
+func.func @_QPsub1() {
+  // expected-error@+1{{'fir.cuda_alloc' op expect device, managed or unified cuda attribute}}
+  %0 = fir.cuda_alloc f32 {bindc_name = "r", cuda_attr = #fir.cuda<pinned>, uniq_name = "_QFsub1Er"} -> !fir.ref<f32>
+  fir.cuda_free %0 : !fir.ref<f32> {cuda_attr = #fir.cuda<constant>}
+  return
+}
+
+// -----
+
+func.func @_QPsub1() {
+  %0 = fir.cuda_alloc f32 {bindc_name = "r", cuda_attr = #fir.cuda<device>, uniq_name = "_QFsub1Er"} -> !fir.ref<f32>
+  // expected-error@+1{{'fir.cuda_free' op expect device, managed or unified cuda attribute}}
+  fir.cuda_free %0 : !fir.ref<f32> {cuda_attr = #fir.cuda<constant>}
+  return
+}