target-xtensa: specialize softfloat NaN rules

NaN propagation rule: leftmost NaN in the expression gets propagated to
the result.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>

diff --git a/fpu/softfloat-specialize.h b/fpu/softfloat-specialize.h
index 50b54b879183f25724d8d5bbca343c8e696d1b70..a1d489e42562bce253eed3d9b833d2add25c7bbb 100644 (file)
--- a/fpu/softfloat-specialize.h
+++ b/fpu/softfloat-specialize.h
@@ -64,7 +64,8 @@ const float16 float16_default_nan = const_float16(0xFE00);
 *----------------------------------------------------------------------------*/
 #if defined(TARGET_SPARC)
 const float32 float32_default_nan = const_float32(0x7FFFFFFF);
-#elif defined(TARGET_PPC) || defined(TARGET_ARM) || defined(TARGET_ALPHA)
+#elif defined(TARGET_PPC) || defined(TARGET_ARM) || defined(TARGET_ALPHA) || \
+      defined(TARGET_XTENSA)
 const float32 float32_default_nan = const_float32(0x7FC00000);
 #elif SNAN_BIT_IS_ONE
 const float32 float32_default_nan = const_float32(0x7FBFFFFF);
@@ -403,7 +404,7 @@ static int pickNaN(flag aIsQNaN, flag aIsSNaN, flag bIsQNaN, flag bIsSNaN,
         return 1;
     }
 }
-#elif defined(TARGET_PPC)
+#elif defined(TARGET_PPC) || defined(TARGET_XTENSA)
 static int pickNaN(flag aIsQNaN, flag aIsSNaN, flag bIsQNaN, flag bIsSNaN,
                    flag aIsLargerSignificand)
 {