diff --git a/mlir/lib/Target/LLVMIR/ModuleTranslation.cpp b/mlir/lib/Target/LLVMIR/ModuleTranslation.cpp
--- a/mlir/lib/Target/LLVMIR/ModuleTranslation.cpp
+++ b/mlir/lib/Target/LLVMIR/ModuleTranslation.cpp
@@ -94,6 +94,8 @@
   }
   if (auto intAttr = attr.dyn_cast<IntegerAttr>())
     return llvm::ConstantInt::get(llvmType, intAttr.getValue());
+  if (auto boolAttr = attr.dyn_cast<BoolAttr>())
+    return llvm::ConstantInt::get(llvmType, boolAttr.getValue());
   if (auto floatAttr = attr.dyn_cast<FloatAttr>())
     return llvm::ConstantFP::get(llvmType, floatAttr.getValue());
   if (auto funcAttr = attr.dyn_cast<FlatSymbolRefAttr>())
diff --git a/mlir/test/Target/llvmir.mlir b/mlir/test/Target/llvmir.mlir
--- a/mlir/test/Target/llvmir.mlir
+++ b/mlir/test/Target/llvmir.mlir
@@ -1177,7 +1177,16 @@
   // CHECK: freeze i32 %{{[0-9]+}}
   %0 = llvm.freeze %x : !llvm.i32
   %1 = llvm.mlir.undef : !llvm.i32
-  // CHECK: freeze i32 undef 
+  // CHECK: freeze i32 undef
   %2 = llvm.freeze %1 : !llvm.i32
   llvm.return
-}
\ No newline at end of file
+}
+
+// CHECK-LABEL: @boolConstArg
+llvm.func @boolConstArg() -> !llvm.i1 {
+  // CHECK: ret i1 false
+  %0 = llvm.mlir.constant(true) : !llvm.i1
+  %1 = llvm.mlir.constant(false) : !llvm.i1
+  %2 = llvm.and %0, %1 : !llvm.i1
+  llvm.return %2 : !llvm.i1
+}