message: Explicitly construct ArrayRef in AttributeTest.cpp
  Some compilers find initializer list constructors from boolean literals
  ambiguous between ArrayRef<bool> and ArrayRef<Attribute>.  Call the
  ArrayRef<bool> constructor explicitly to disambiguate.
diff: @@ -43,19 +43,23 @@ TEST(DenseSplatTest, BoolSplat) {
  // Check that splat is automatically detected for boolean values.
  /// True.
  - DenseElementsAttr trueSplat = DenseElementsAttr::get(shape, true);
  + DenseElementsAttr trueSplat =
  + DenseElementsAttr::get(shape, llvm::ArrayRef<bool>(true));
  EXPECT_TRUE(trueSplat.isSplat());
  /// False.
  - DenseElementsAttr falseSplat = DenseElementsAttr::get(shape, false);
  + DenseElementsAttr falseSplat =
  + DenseElementsAttr::get(shape, llvm::ArrayRef<bool>(false));
  EXPECT_TRUE(falseSplat.isSplat());
  EXPECT_NE(falseSplat, trueSplat);
  /// Detect and handle splat within 8 elements (bool values are bit-packed).
  /// True.
  - auto detectedSplat = DenseElementsAttr::get(shape, {true, true, true, true});
  + auto detectedSplat = DenseElementsAttr::get(
  + shape, llvm::ArrayRef<bool>({true, true, true, true}));
  EXPECT_EQ(detectedSplat, trueSplat);
  /// False.
  - detectedSplat = DenseElementsAttr::get(shape, {false, false, false, false});
  + detectedSplat = DenseElementsAttr::get(
  + shape, llvm::ArrayRef<bool>({false, false, false, false}));
  EXPECT_EQ(detectedSplat, falseSplat);
  }
  