rewrite comments to conform with sister PR

Author: ianayl

mlir/lib/Conversion/ArithToSPIRV/ArithToSPIRV.cpp

@@ -611,8 +611,7 @@ struct UIToFPI1Pattern final : public OpConversionPattern<arith::UIToFPOp> {
 // IndexCastOp
 //===----------------------------------------------------------------------===//
 
-/// Converts arith.index_cast to spirv.Select if the type of source is i1 or
-/// vector of i1.
+/// Converts arith.index_cast to spirv.Select if the source type is i1
 struct IndexCastI1IndexPattern final
     : public OpConversionPattern<arith::IndexCastOp> {
   using OpConversionPattern::OpConversionPattern;

mlir/test/Conversion/ArithToSPIRV/arith-to-spirv.mlir

@@ -734,8 +734,8 @@ func.func @index_castui4(%arg0: index) {
   return
 }
 
-// CHECK-LABEL: index_casti1index_1
-func.func @index_casti1index_1(%arg0 : i1) {
+// CHECK-LABEL: index_casti1index
+func.func @index_casti1index(%arg0 : i1) {
   // CHECK: %[[ZERO:.+]] = spirv.Constant 0 : i32
   // CHECK: %[[ONE:.+]] = spirv.Constant 1 : i32
   // CHECK: spirv.Select %{{.+}}, %[[ONE]], %[[ZERO]] : i1, i32