[wasm] Fixed FxxMin and FxxMax for cases where one operand is NaN.

test/cctest/wasm/test-run-wasm.cc

Index: test/cctest/wasm/test-run-wasm.cc
diff --git a/test/cctest/wasm/test-run-wasm.cc b/test/cctest/wasm/test-run-wasm.cc
index 7db7cb740e6483f4a446fb81c23331df7c24886b..90897fe60e4e90cd9b79a24f9f7f3bf0b0c7d9af 100644
--- a/test/cctest/wasm/test-run-wasm.cc
+++ b/test/cctest/wasm/test-run-wasm.cc
@@ -3168,7 +3168,18 @@ TEST(Run_Wasm_F32Min) {
 
   FOR_FLOAT32_INPUTS(i) {
     FOR_FLOAT32_INPUTS(j) {
-      float expected = *i < *j ? *i : *j;
+      float expected;
+      if (*i < *j) {
+        expected = *i;
+      } else if (*j < *i) {
+        expected = *j;
+      } else if (*i != *i) {
+        // If *i or *j is NaN, then the result is NaN.
+        expected = *i;
+      } else {
+        expected = *j;
+      }
+
       CheckFloatEq(expected, r.Call(*i, *j));
     }
   }
@@ -3181,7 +3192,18 @@ TEST(Run_Wasm_F64Min) {
 
   FOR_FLOAT64_INPUTS(i) {
     FOR_FLOAT64_INPUTS(j) {
-      double expected = *i < *j ? *i : *j;
+      double expected;
+      if (*i < *j) {
+        expected = *i;
+      } else if (*j < *i) {
+        expected = *j;
+      } else if (*i != *i) {
+        // If *i or *j is NaN, then the result is NaN.
+        expected = *i;
+      } else {
+        expected = *j;
+      }
+
       CheckDoubleEq(expected, r.Call(*i, *j));
     }
   }
@@ -3194,7 +3216,18 @@ TEST(Run_Wasm_F32Max) {
 
   FOR_FLOAT32_INPUTS(i) {
     FOR_FLOAT32_INPUTS(j) {
-      float expected = *i > *j ? *i : *j;
+      float expected;
+      if (*i > *j) {
+        expected = *i;
+      } else if (*j > *i) {
+        expected = *j;
+      } else if (*i != *i) {
+        // If *i or *j is NaN, then the result is NaN.
+        expected = *i;
+      } else {
+        expected = *j;
+      }
+
       CheckFloatEq(expected, r.Call(*i, *j));
     }
   }
@@ -3207,7 +3240,18 @@ TEST(Run_Wasm_F64Max) {
 
   FOR_FLOAT64_INPUTS(i) {
     FOR_FLOAT64_INPUTS(j) {
-      double expected = *i > *j ? *i : *j;
+      double expected;
+      if (*i > *j) {
+        expected = *i;
+      } else if (*j > *i) {
+        expected = *j;
+      } else if (*i != *i) {
+        // If *i or *j is NaN, then the result is NaN.
+        expected = *i;
+      } else {
+        expected = *j;
+      }
+
       CheckDoubleEq(expected, r.Call(*i, *j));
     }
   }