Index: mlir/lib/IR/AsmPrinter.cpp
===================================================================
--- mlir/lib/IR/AsmPrinter.cpp
+++ mlir/lib/IR/AsmPrinter.cpp
@@ -2685,8 +2685,9 @@
                    uint32_t dataAlignment) final {
       printFn(key, [&](raw_ostream &os) {
         // Store the blob in a hex string containing the alignment and the data.
+        llvm::support::ulittle32_t dataAlignmentLE(dataAlignment);
         os << "\"0x"
-           << llvm::toHex(StringRef(reinterpret_cast<char *>(&dataAlignment),
+           << llvm::toHex(StringRef(reinterpret_cast<char *>(&dataAlignmentLE),
                                     sizeof(dataAlignment)))
            << llvm::toHex(StringRef(data.data(), data.size())) << "\"";
       });
Index: mlir/lib/Parser/Parser.cpp
===================================================================
--- mlir/lib/Parser/Parser.cpp
+++ mlir/lib/Parser/Parser.cpp
@@ -24,6 +24,7 @@
 #include "llvm/ADT/ScopeExit.h"
 #include "llvm/ADT/StringSet.h"
 #include "llvm/ADT/bit.h"
+#include "llvm/Support/Endian.h"
 #include "llvm/Support/PrettyStackTrace.h"
 #include "llvm/Support/SourceMgr.h"
 #include <algorithm>
@@ -2320,7 +2321,7 @@
                          "expected hex string blob for key '" + key +
                              "' to encode alignment in first 4 bytes");
     }
-    uint32_t align = 0;
+    llvm::support::ulittle32_t align;
     memcpy(&align, blobData->data(), sizeof(uint32_t));
 
     // Get the data portion of the blob.
Index: mlir/test/IR/elements-attr-interface.mlir
===================================================================
--- mlir/test/IR/elements-attr-interface.mlir
+++ mlir/test/IR/elements-attr-interface.mlir
@@ -1,5 +1,8 @@
 // RUN: mlir-opt %s -test-elements-attr-interface -verify-diagnostics
 
+// Parsing external resources does not work on big-endian platforms currently
+// XFAIL: s390x-
+
 // This test contains various `ElementsAttr` attributes, and tests the support
 // for iterating the values of these attributes using various native C++ types.
 // This tests that the abstract iteration of ElementsAttr works properly, and