diff --git a/mlir/test/IR/dense-elements-hex.mlir b/mlir/test/IR/BE/dense-elements-hex-be.mlir
rename from mlir/test/IR/dense-elements-hex.mlir
rename to mlir/test/IR/BE/dense-elements-hex-be.mlir
--- a/mlir/test/IR/dense-elements-hex.mlir
+++ b/mlir/test/IR/BE/dense-elements-hex-be.mlir
@@ -1,29 +1,29 @@
 // RUN: mlir-opt -allow-unregistered-dialect %s -verify-diagnostics -split-input-file -mlir-print-elementsattrs-with-hex-if-larger=1 | FileCheck %s --check-prefix=HEX
 // RUN: mlir-opt -allow-unregistered-dialect %s -verify-diagnostics -split-input-file | FileCheck %s
 
-// HEX: dense<"0x00000000000024400000000000001440"> : tensor<2xf64>
+// HEX: dense<"0x40240000000000004014000000000000"> : tensor<2xf64>
 "foo.op"() {dense.attr = dense<[10.0, 5.0]> : tensor<2xf64>} : () -> ()
 
 // CHECK: dense<[1.000000e+01, 5.000000e+00]> : tensor<2xf64>
-"foo.op"() {dense.attr = dense<"0x00000000000024400000000000001440"> : tensor<2xf64>} : () -> ()
+"foo.op"() {dense.attr = dense<"0x40240000000000004014000000000000"> : tensor<2xf64>} : () -> ()
 
 // CHECK: dense<(1.000000e+01,5.000000e+00)> : tensor<2xcomplex<f64>>
-"foo.op"() {dense.attr = dense<"0x0000000000002440000000000000144000000000000024400000000000001440"> : tensor<2xcomplex<f64>>} : () -> ()
+"foo.op"() {dense.attr = dense<"0x4024000000000000401400000000000040240000000000004014000000000000"> : tensor<2xcomplex<f64>>} : () -> ()
 
 // CHECK: dense<[1.000000e+01, 5.000000e+00]> : tensor<2xbf16>
-"foo.op"() {dense.attr = dense<"0x00000000000024400000000000001440"> : tensor<2xbf16>} : () -> ()
+"foo.op"() {dense.attr = dense<"0x40240000000000004014000000000000"> : tensor<2xbf16>} : () -> ()
 
 // -----
 
 // expected-error@+1 {{elements hex string should start with '0x'}}
-"foo.op"() {dense.attr = dense<"00000000000024400000000000001440"> : tensor<2xf64>} : () -> ()
+"foo.op"() {dense.attr = dense<"40240000000000004014000000000000"> : tensor<2xf64>} : () -> ()
 
 // -----
 
 // expected-error@+1 {{elements hex string only contains hex digits}}
-"foo.op"() {dense.attr = dense<"0x0000000000002440000000000000144X"> : tensor<2xf64>} : () -> ()
+"foo.op"() {dense.attr = dense<"0x40240000000000004X14000000000000"> : tensor<2xf64>} : () -> ()
 
 // -----
 
 // expected-error@+1 {{elements hex data size is invalid for provided type}}
-"foo.op"() {dense.attr = dense<"0x00000000000024400000000000001440"> : tensor<4xf64>} : () -> ()
+"foo.op"() {dense.attr = dense<"0x40240000000000004014000000000000"> : tensor<4xf64>} : () -> ()
diff --git a/mlir/test/IR/BE/lit.local.cfg b/mlir/test/IR/BE/lit.local.cfg
new file mode 100644
--- /dev/null
+++ b/mlir/test/IR/BE/lit.local.cfg
@@ -0,0 +1,2 @@
+if not 's390x' in config.host_arch:
+  config.unsupported = True
diff --git a/mlir/test/IR/dense-elements-hex.mlir b/mlir/test/IR/LE/dense-elements-hex-le.mlir
rename from mlir/test/IR/dense-elements-hex.mlir
rename to mlir/test/IR/LE/dense-elements-hex-le.mlir
diff --git a/mlir/test/IR/LE/lit.local.cfg b/mlir/test/IR/LE/lit.local.cfg
new file mode 100644
--- /dev/null
+++ b/mlir/test/IR/LE/lit.local.cfg
@@ -0,0 +1,2 @@
+if 's390x' in config.host_arch:
+  config.unsupported = True