[mlir][complex] Make CPU runner test platform agnostic (llvm#85607)

Author: Lewuathe

mlir/test/Integration/Dialect/Complex/CPU/correctness.mlir

@@ -9,9 +9,6 @@
 // RUN:  -shared-libs=%mlir_c_runner_utils |\
 // RUN: FileCheck %s
 
-// XFAIL: target=aarch64{{.*}}
-// See: https://github.com/llvm/llvm-project/issues/58531
-
 func.func @test_unary(%input: tensor<?xcomplex<f32>>,
                       %func: (complex<f32>) -> complex<f32>) {
   %c0 = arith.constant 0 : index
@@ -189,8 +186,9 @@ func.func @entry() {
     // CHECK-NEXT:  0
     // CHECK-NEXT:  0
     (0.0, 0.0), (-1.0, 0.0),
-    // CHECK-NEXT:  -nan
-    // CHECK-NEXT:  -nan
+    // Ignoring the sign of nan as that can't be tested in platform agnostic manner. See: #58531
+    // CHECK-NEXT:  nan
+    // CHECK-NEXT:  nan
     (1.0, 1.0), (1.0, 1.0)
     // CHECK-NEXT:  0.273
     // CHECK-NEXT:  0.583