diff --git a/mlir/lib/Dialect/SPIRV/IR/SPIRVEnums.cpp b/mlir/lib/Dialect/SPIRV/IR/SPIRVEnums.cpp
--- a/mlir/lib/Dialect/SPIRV/IR/SPIRVEnums.cpp
+++ b/mlir/lib/Dialect/SPIRV/IR/SPIRVEnums.cpp
@@ -12,11 +12,8 @@
 
 #include "mlir/Dialect/SPIRV/IR/SPIRVEnums.h"
 
-#include "mlir/IR/BuiltinTypes.h"
-
 #include "llvm/ADT/SetVector.h"
 #include "llvm/ADT/StringExtras.h"
-#include "llvm/ADT/StringRef.h"
 
 #include <iterator>
 
@@ -54,25 +51,38 @@
       Extension::SPV_KHR_physical_storage_buffer,                              \
       Extension::SPV_KHR_vulkan_memory_model
 
+// TODO(https://github.com/llvm/llvm-project/issues/59348): Implement
+// missing 1.6 extensions (SPV_KHR_non_semantic_info,
+// SPV_KHR_terminate_invocation).
+#define V_1_6_IMPLIED_EXTS                                                     \
+  Extension::SPV_EXT_demote_to_helper_invocation,                              \
+      Extension::SPV_KHR_integer_dot_product
+
   switch (version) {
   default:
     return {};
   case Version::V_1_3: {
     // The following manual ArrayRef constructor call is to satisfy GCC 5.
     static const Extension exts[] = {V_1_3_IMPLIED_EXTS};
-    return ArrayRef<spirv::Extension>(exts, std::size(exts));
+    return exts;
   }
   case Version::V_1_4: {
     static const Extension exts[] = {V_1_3_IMPLIED_EXTS, V_1_4_IMPLIED_EXTS};
-    return ArrayRef<spirv::Extension>(exts, std::size(exts));
+    return exts;
   }
   case Version::V_1_5: {
     static const Extension exts[] = {V_1_3_IMPLIED_EXTS, V_1_4_IMPLIED_EXTS,
                                      V_1_5_IMPLIED_EXTS};
-    return ArrayRef<spirv::Extension>(exts, std::size(exts));
+    return exts;
+  }
+  case Version::V_1_6: {
+    static const Extension exts[] = {V_1_3_IMPLIED_EXTS, V_1_4_IMPLIED_EXTS,
+                                     V_1_5_IMPLIED_EXTS, V_1_6_IMPLIED_EXTS};
+    return exts;
   }
   }
 
+#undef V_1_6_IMPLIED_EXTS
 #undef V_1_5_IMPLIED_EXTS
 #undef V_1_4_IMPLIED_EXTS
 #undef V_1_3_IMPLIED_EXTS