Relax MODES_TIEABLE_P constraint

It only needs to return false when both modes are floating-point. It's OK if only one is floating-point.
riscvarchive · Jan 5, 2017 · cd5c51b · cd5c51b
1 parent 287c5cb
commit cd5c51b
Showing 1 changed file with 4 additions and 3 deletions.
diff --git a/gcc/config/riscv/riscv.h b/gcc/config/riscv/riscv.h
@@ -383,9 +383,10 @@ along with GCC; see the file COPYING3.  If not see
 
 /* Don't allow floating-point modes to be tied, since type punning of
    single-precision and double-precision is implementation defined.  */
-#define MODES_TIEABLE_P(MODE1, MODE2)					\
-  ((MODE1) == (MODE2) || (GET_MODE_CLASS (MODE1) == MODE_INT		\
-			  && GET_MODE_CLASS (MODE2) == MODE_INT))
+#define MODES_TIEABLE_P(MODE1, MODE2)			\
+  ((MODE1) == (MODE2)					\
+   || !(GET_MODE_CLASS (MODE1) == MODE_FLOAT		\
+	&& GET_MODE_CLASS (MODE2) == MODE_FLOAT))
 
 /* Use s0 as the frame pointer if it is so requested.  */
 #define HARD_FRAME_POINTER_REGNUM 8