[MLIR][SPIR-V] Add LIT test for vector.interleave to spirv.VectorShuffle

Author: angelz913

mlir/lib/Conversion/VectorToSPIRV/VectorToSPIRV.cpp

@@ -832,6 +832,7 @@ void mlir::populateVectorToSPIRVPatterns(SPIRVTypeConverter &typeConverter,
 
   // Need this until vector.interleave is handled.
   vector::populateVectorInterleaveToShufflePatterns(patterns);
+
 }
 
 void mlir::populateVectorReductionToSPIRVDotProductPatterns(

mlir/test/Conversion/VectorToSPIRV/vector-to-spirv.mlir

@@ -483,6 +483,18 @@ func.func @shuffle(%v0 : vector<1xi32>, %v1: vector<1xi32>) -> vector<2xi32> {
 
 // -----
 
+// CHECK-LABEL: func @interleave
+//  CHECK-SAME: (%[[ARG0:.+]]: vector<2xf32>, %[[ARG1:.+]]: vector<2xf32>)
+//       CHECK: %[[SHUFFLE:.*]] = spirv.VectorShuffle [0 : i32, 2 : i32, 1 : i32, 3 : i32] %[[ARG0]], %[[ARG1]] : vector<2xf32>, vector<2xf32> -> vector<4xf32>
+//       CHECK: return %[[SHUFFLE]]
+func.func @interleave(%a: vector<2xf32>, %b: vector<2xf32>) -> vector<4xf32>
+{
+  %0 = vector.interleave %a, %b : vector<2xf32>
+  return %0 : vector<4xf32>
+}
+
+// -----
+
 // CHECK-LABEL: func @reduction_add
 //  CHECK-SAME: (%[[V:.+]]: vector<4xi32>)
 //       CHECK:   %[[S0:.+]] = spirv.CompositeExtract %[[V]][0 : i32] : vector<4xi32>