[Mlir-commits] [mlir] [mlir][vector] Add a pattern to fuse extract(constant_mask) (PR #81057)

[Diego Caballero]

================
@@ -2567,3 +2567,50 @@ func.func @load_store_forwarding_rank_mismatch(%v0: vector<4x1x1xf32>, %arg0: te
       tensor<4x4x4xf32>, vector<1x100x4x5xf32>
   return %r : vector<1x100x4x5xf32>
 }
+
+// -----
+
+// CHECK-LABEL: func.func @extract_true_from_constant_mask() -> i1 {
+func.func @extract_true_from_constant_mask() -> i1 {
+// CHECK:      %[[TRUE:.*]] = arith.constant true
+// CHECK-NEXT: return %[[TRUE]] : i1
+  %mask = vector.constant_mask [2, 2, 3] : vector<4x4x4xi1>
+  %extract = vector.extract %mask[1, 1, 2] : i1 from vector<4x4x4xi1>
+  return %extract : i1
+}
+
+// -----
+
+// CHECK-LABEL: func.func @extract_false_from_constant_mask() -> i1 {
+func.func @extract_false_from_constant_mask() -> i1 {
+// CHECK:      %[[FALSE:.*]] = arith.constant false
+// CHECK-NEXT: return %[[FALSE]] : i1
+  %mask = vector.constant_mask [2, 2, 3] : vector<4x4x4xi1>
+  %extract = vector.extract %mask[1, 2, 2] : i1 from vector<4x4x4xi1>
+  return %extract : i1
+}
+
+// -----
+
+// CHECK-LABEL: func.func @extract_from_create_mask() -> i1 {
+func.func @extract_from_create_mask() -> i1 {
+// CHECK:      %[[TRUE:.*]] = arith.constant true
+// CHECK-NEXT: return %[[TRUE]] : i1
+  %c2 = arith.constant 2 : index
+  %c3 = arith.constant 3 : index
+  %mask = vector.create_mask %c2, %c2, %c3 : vector<4x4x4xi1>
+  %extract = vector.extract %mask[1, 1, 2] : i1 from vector<4x4x4xi1>
+  return %extract : i1
+}
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dcaballe wrote:

Could you add a few tests where the indices are not static?

https://github.com/llvm/llvm-project/pull/81057