diff --git a/mlir/lib/IR/BuiltinAttributes.cpp b/mlir/lib/IR/BuiltinAttributes.cpp
--- a/mlir/lib/IR/BuiltinAttributes.cpp
+++ b/mlir/lib/IR/BuiltinAttributes.cpp
@@ -1526,7 +1526,12 @@
 
   // Check for the splat case.
   if (attr.isSplat()) {
-    processElt(*attr.begin(), /*index=*/0);
+    if (bitWidth == 1) {
+      // Handle the special encoding of splat of bool.
+      data[0] = mapping(*attr.begin()).isZero() ? 0 : -1;
+    } else {
+      processElt(*attr.begin(), /*index=*/0);
+    }
     return newArrayType;
   }
 
diff --git a/mlir/unittests/IR/AttributeTest.cpp b/mlir/unittests/IR/AttributeTest.cpp
--- a/mlir/unittests/IR/AttributeTest.cpp
+++ b/mlir/unittests/IR/AttributeTest.cpp
@@ -209,6 +209,40 @@
   auto attr = DenseElementsAttr::get(shape, llvm::makeArrayRef({elementValue}));
   EXPECT_TRUE(attr.getValues<Attribute>()[0] == value);
 }
+
+TEST(DenseSplatMapValuesTest, I32ToTrue) {
+  MLIRContext context;
+  const int elementValue = 12;
+  IntegerType boolTy = IntegerType::get(&context, 1);
+  IntegerType intTy = IntegerType::get(&context, 32);
+  RankedTensorType shape = RankedTensorType::get({4}, intTy);
+
+  auto attr =
+      DenseElementsAttr::get(shape, llvm::makeArrayRef({elementValue}))
+          .mapValues(boolTy, [](const APInt &x) {
+            return x.isZero() ? APInt::getZero(1) : APInt::getAllOnes(1);
+          });
+  EXPECT_EQ(attr.getNumElements(), 4);
+  EXPECT_TRUE(attr.isSplat());
+  EXPECT_TRUE(attr.getSplatValue<BoolAttr>().getValue());
+}
+
+TEST(DenseSplatMapValuesTest, I32ToFalse) {
+  MLIRContext context;
+  const int elementValue = 0;
+  IntegerType boolTy = IntegerType::get(&context, 1);
+  IntegerType intTy = IntegerType::get(&context, 32);
+  RankedTensorType shape = RankedTensorType::get({4}, intTy);
+
+  auto attr =
+      DenseElementsAttr::get(shape, llvm::makeArrayRef({elementValue}))
+          .mapValues(boolTy, [](const APInt &x) {
+            return x.isZero() ? APInt::getZero(1) : APInt::getAllOnes(1);
+          });
+  EXPECT_EQ(attr.getNumElements(), 4);
+  EXPECT_TRUE(attr.isSplat());
+  EXPECT_FALSE(attr.getSplatValue<BoolAttr>().getValue());
+}
 } // namespace
 
 //===----------------------------------------------------------------------===//