PPC/S390: Disable failing wasm-spec-tests

test/wasm-spec-tests/wasm-spec-tests.status

Index: test/wasm-spec-tests/wasm-spec-tests.status
diff --git a/test/wasm-spec-tests/wasm-spec-tests.status b/test/wasm-spec-tests/wasm-spec-tests.status
index 94df9c76c40ddd6f663608b9b75106b32bd2d058..481a54179100bffb5694e56fcb5785f0bf3c3099 100644
--- a/test/wasm-spec-tests/wasm-spec-tests.status
+++ b/test/wasm-spec-tests/wasm-spec-tests.status
@@ -30,4 +30,18 @@
   'tests/br_table': [SKIP],
 }],  # 'arch == arm and not simulator_run'
 
+['arch == ppc or arch == ppc64', {
+  # These tests fail because ppc float min and max doesn't convert sNaN to qNaN.
+  'tests/f32': [SKIP],
+  'tests/f64': [SKIP],
+  # This test fails because ppc float to double doesn't convert sNaN to qNaN.
+  'tests/conversions': [SKIP],
+}],  # 'arch == ppc or arch == ppc64'
+
+['arch == s390 or arch == s390x', {
+  # These tests fail because s390 float min and max doesn't convert sNaN to qNaN.
+  'tests/f32': [SKIP],
+  'tests/f64': [SKIP],
+}],  # 'arch == s390 or arch == s390x'
+
 ]