combine.c (force_to_mode): Only convert the expression (AND (NE FOO 0) CONST)…

combine.c (force_to_mode): Only convert the expression (AND (NE FOO 0) CONST) into (AND FOO CONST) if...


	* combine.c (force_to_mode) <NE_EXPR>: Only convert the expression
	(AND (NE FOO 0) CONST) into (AND FOO CONST) if FOO has the same
	machine mode as the result.

From-SVN: r88369

gcc/ChangeLog

+2004-09-30  Roger Sayle  <roger@eyesopen.com>
+
+	* combine.c (force_to_mode) <NE_EXPR>: Only convert the expression
+	(AND (NE FOO 0) CONST) into (AND FOO CONST) if FOO has the same
+	machine mode as the result.
+
 2004-09-30  Ben Elliston  <bje@au.ibm.com>
 
 	PR bootstrap/17761

gcc/combine.c

@@ -7338,6 +7338,7 @@ force_to_mode (rtx x, enum machine_mode mode, unsigned HOST_WIDE_INT mask,
 	 in STORE_FLAG_VALUE and FOO has a single bit that might be nonzero,
 	 which is equal to STORE_FLAG_VALUE.  */
       if ((mask & ~STORE_FLAG_VALUE) == 0 && XEXP (x, 1) == const0_rtx
+	  && GET_MODE (XEXP (x, 0)) == mode
 	  && exact_log2 (nonzero_bits (XEXP (x, 0), mode)) >= 0
 	  && (nonzero_bits (XEXP (x, 0), mode)
 	      == (unsigned HOST_WIDE_INT) STORE_FLAG_VALUE))